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Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci

This commit is contained in:
Russell King 2009-04-27 18:06:24 +01:00 committed by Russell King
parent 5876ee950f 3e9c18e1dc
commit a133e775d5
34 changed files with 5319 additions and 506 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/Kconfig
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@ -585,6 +585,8 @@ config ARCH_DAVINCI
select ARCH_REQUIRE_GPIOLIB
select HAVE_CLK
select ZONE_DMA
select HAVE_IDE
select COMMON_CLKDEV
help
Support for TI's DaVinci platform.

1784
arch/arm/configs/davinci_all_defconfig Normal file
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File diff suppressed because it is too large Load Diff

47
arch/arm/mach-davinci/Kconfig
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@ -4,19 +4,56 @@ menu "TI DaVinci Implementations"
comment "DaVinci Core Type"
config ARCH_DAVINCI644x
default y
config ARCH_DAVINCI_DM644x
bool "DaVinci 644x based system"
comment "DaVinci Board Type"
config MACH_DAVINCI_EVM
bool "TI DaVinci EVM"
bool "TI DM644x EVM"
default y
depends on ARCH_DAVINCI644x
depends on ARCH_DAVINCI_DM644x
help
Configure this option to specify the whether the board used
for development is a DaVinci EVM
for development is a DM644x EVM
config DAVINCI_MUX
bool "DAVINCI multiplexing support"
depends on ARCH_DAVINCI
default y
help
Pin multiplexing support for DAVINCI boards. If your bootloader
sets the multiplexing correctly, say N. Otherwise, or if unsure,
say Y.
config DAVINCI_MUX_DEBUG
bool "Multiplexing debug output"
depends on DAVINCI_MUX
help
Makes the multiplexing functions print out a lot of debug info.
This is useful if you want to find out the correct values of the
multiplexing registers.
config DAVINCI_MUX_WARNINGS
bool "Warn about pins the bootloader didn't set up"
depends on DAVINCI_MUX
help
Choose Y here to warn whenever driver initialization logic needs
to change the pin multiplexing setup. When there are no warnings
printed, it's safe to deselect DAVINCI_MUX for your product.
config DAVINCI_RESET_CLOCKS
bool "Reset unused clocks during boot"
depends on ARCH_DAVINCI
help
Say Y if you want to reset unused clocks during boot.
This option saves power, but assumes all drivers are
using the clock framework. Broken drivers that do not
yet use clock framework may not work with this option.
If you are booting from another operating system, you
probably do not want this option enabled until your
device drivers work properly.
endmenu

9
arch/arm/mach-davinci/Makefile
View File

@ -5,7 +5,12 @@
# Common objects
obj-y := time.o irq.o clock.o serial.o io.o id.o psc.o \
gpio.o mux.o devices.o usb.o
gpio.o devices.o dma.o usb.o
obj-$(CONFIG_DAVINCI_MUX) += mux.o
# Chip specific
obj-$(CONFIG_ARCH_DAVINCI_DM644x) += dm644x.o
# Board specific
obj-$(CONFIG_MACH_DAVINCI_EVM) += board-evm.o
obj-$(CONFIG_MACH_DAVINCI_EVM) += board-dm644x-evm.o

322
arch/arm/mach-davinci/board-evm.c → arch/arm/mach-davinci/board-dm644x-evm.c
View File

@ -15,15 +15,20 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/memory.h>
#include <linux/etherdevice.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
#include <linux/i2c/at24.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>
#include <linux/phy.h>
#include <linux/clk.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
@ -32,25 +37,34 @@
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
#include <mach/hardware.h>
#include <mach/dm644x.h>
#include <mach/common.h>
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/mux.h>
#include <mach/psc.h>
#include <mach/nand.h>
/* other misc. init functions */
void __init davinci_psc_init(void);
void __init davinci_irq_init(void);
void __init davinci_map_common_io(void);
void __init davinci_init_common_hw(void);
#define DM644X_EVM_PHY_MASK (0x2)
#define DM644X_EVM_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
#if defined(CONFIG_MTD_PHYSMAP) || \
defined(CONFIG_MTD_PHYSMAP_MODULE)
#define DAVINCI_CFC_ATA_BASE 0x01C66000
#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e00000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE 0x04000000
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE 0x06000000
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE 0x08000000
#define LXT971_PHY_ID (0x001378e2)
#define LXT971_PHY_MASK (0xfffffff0)
static struct mtd_partition davinci_evm_norflash_partitions[] = {
/* bootloader (U-Boot, etc) in first 4 sectors */
/* bootloader (UBL, U-Boot, etc) in first 5 sectors */
{
.name = "bootloader",
.offset = 0,
.size = 4 * SZ_64K,
.size = 5 * SZ_64K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next 1 sectors */
@ -100,10 +114,89 @@ static struct platform_device davinci_evm_norflash_device = {
.resource = &davinci_evm_norflash_resource,
};
#endif
/* DM644x EVM includes a 64 MByte small-page NAND flash (16K blocks).
* It may used instead of the (default) NOR chip to boot, using TI's
* tools to install the secondary boot loader (UBL) and U-Boot.
*/
struct mtd_partition davinci_evm_nandflash_partition[] = {
/* Bootloader layout depends on whose u-boot is installed, but we
* can hide all the details.
* - block 0 for u-boot environment ... in mainline u-boot
* - block 1 for UBL (plus up to four backup copies in blocks 2..5)
* - blocks 6...? for u-boot
* - blocks 16..23 for u-boot environment ... in TI's u-boot
*/
{
.name = "bootloader",
.offset = 0,
.size = SZ_256K + SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* Kernel */
{
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_4M,
.mask_flags = 0,
},
/* File system (older GIT kernels started this on the 5MB mark) */
{
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0,
}
/* A few blocks at end hold a flash BBT ... created by TI's CCS
* using flashwriter_nand.out, but ignored by TI's versions of
* Linux and u-boot. We boot faster by using them.
*/
};
#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
static struct davinci_nand_pdata davinci_evm_nandflash_data = {
.parts = davinci_evm_nandflash_partition,
.nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition),
.ecc_mode = NAND_ECC_HW,
.options = NAND_USE_FLASH_BBT,
};
static struct resource davinci_evm_nandflash_resource[] = {
{
.start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
.end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_16M - 1,
.flags = IORESOURCE_MEM,
}, {
.start = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
.end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device davinci_evm_nandflash_device = {
.name = "davinci_nand",
.id = 0,
.dev = {
.platform_data = &davinci_evm_nandflash_data,
},
.num_resources = ARRAY_SIZE(davinci_evm_nandflash_resource),
.resource = davinci_evm_nandflash_resource,
};
static u64 davinci_fb_dma_mask = DMA_BIT_MASK(32);
static struct platform_device davinci_fb_device = {
.name = "davincifb",
.id = -1,
.dev = {
.dma_mask = &davinci_fb_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = 0,
};
static struct platform_device rtc_dev = {
.name = "rtc_davinci_evm",
.id = -1,
};
static struct resource ide_resources[] = {
{
@ -118,7 +211,7 @@ static struct resource ide_resources[] = {
},
};
static u64 ide_dma_mask = DMA_BIT_MASK(32);
static u64 ide_dma_mask = DMA_32BIT_MASK;
static struct platform_device ide_dev = {
.name = "palm_bk3710",
@ -127,12 +220,10 @@ static struct platform_device ide_dev = {
.num_resources = ARRAY_SIZE(ide_resources),
.dev = {
.dma_mask = &ide_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.coherent_dma_mask = DMA_32BIT_MASK,
},
};
#endif
/*----------------------------------------------------------------------*/
/*
@ -311,7 +402,9 @@ evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
gpio_request(gpio + 7, "nCF_SEL");
gpio_direction_output(gpio + 7, 1);
/* irlml6401 sustains over 3A, switches 5V in under 8 msec */
/* irlml6401 switches over 1A, in under 8 msec;
* now it can be managed by nDRV_VBUS ...
*/
setup_usb(500, 8);
return 0;
@ -343,13 +436,119 @@ static struct pcf857x_platform_data pcf_data_u35 = {
* - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
* - ... newer boards may have more
*/
static struct memory_accessor *at24_mem_acc;
static void at24_setup(struct memory_accessor *mem_acc, void *context)
{
DECLARE_MAC_BUF(mac_str);
char mac_addr[6];
at24_mem_acc = mem_acc;
/* Read MAC addr from EEPROM */
if (at24_mem_acc->read(at24_mem_acc, mac_addr, 0x7f00, 6) == 6) {
printk(KERN_INFO "Read MAC addr from EEPROM: %s\n",
print_mac(mac_str, mac_addr));
}
}
static struct at24_platform_data eeprom_info = {
.byte_len = (256*1024) / 8,
.page_size = 64,
.flags = AT24_FLAG_ADDR16,
.setup = at24_setup,
};
int dm6446evm_eeprom_read(void *buf, off_t off, size_t count)
{
if (at24_mem_acc)
return at24_mem_acc->read(at24_mem_acc, buf, off, count);
return -ENODEV;
}
EXPORT_SYMBOL(dm6446evm_eeprom_read);
int dm6446evm_eeprom_write(void *buf, off_t off, size_t count)
{
if (at24_mem_acc)
return at24_mem_acc->write(at24_mem_acc, buf, off, count);
return -ENODEV;
}
EXPORT_SYMBOL(dm6446evm_eeprom_write);
/*
* MSP430 supports RTC, card detection, input from IR remote, and
* a bit more. It triggers interrupts on GPIO(7) from pressing
* buttons on the IR remote, and for card detect switches.
*/
static struct i2c_client *dm6446evm_msp;
static int dm6446evm_msp_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
dm6446evm_msp = client;
return 0;
}
static int dm6446evm_msp_remove(struct i2c_client *client)
{
dm6446evm_msp = NULL;
return 0;
}
static const struct i2c_device_id dm6446evm_msp_ids[] = {
{ "dm6446evm_msp", 0, },
{ /* end of list */ },
};
static struct i2c_driver dm6446evm_msp_driver = {
.driver.name = "dm6446evm_msp",
.id_table = dm6446evm_msp_ids,
.probe = dm6446evm_msp_probe,
.remove = dm6446evm_msp_remove,
};
static int dm6444evm_msp430_get_pins(void)
{
static const char txbuf[2] = { 2, 4, };
char buf[4];
struct i2c_msg msg[2] = {
{
.addr = dm6446evm_msp->addr,
.flags = 0,
.len = 2,
.buf = (void __force *)txbuf,
},
{
.addr = dm6446evm_msp->addr,
.flags = I2C_M_RD,
.len = 4,
.buf = buf,
},
};
int status;
if (!dm6446evm_msp)
return -ENXIO;
/* Command 4 == get input state, returns port 2 and port3 data
* S Addr W [A] len=2 [A] cmd=4 [A]
* RS Addr R [A] [len=4] A [cmd=4] A [port2] A [port3] N P
*/
status = i2c_transfer(dm6446evm_msp->adapter, msg, 2);
if (status < 0)
return status;
dev_dbg(&dm6446evm_msp->dev,
"PINS: %02x %02x %02x %02x\n",
buf[0], buf[1], buf[2], buf[3]);
return (buf[3] << 8) | buf[2];
}
static struct i2c_board_info __initdata i2c_info[] = {
{
I2C_BOARD_INFO("dm6446evm_msp", 0x23),
},
{
I2C_BOARD_INFO("pcf8574", 0x38),
.platform_data = &pcf_data_u2,
@ -368,7 +567,6 @@ static struct i2c_board_info __initdata i2c_info[] = {
},
/* ALSO:
* - tvl320aic33 audio codec (0x1b)
* - msp430 microcontroller (0x23)
* - tvp5146 video decoder (0x5d)
*/
};
@ -384,51 +582,109 @@ static struct davinci_i2c_platform_data i2c_pdata = {
static void __init evm_init_i2c(void)
{
davinci_init_i2c(&i2c_pdata);
i2c_add_driver(&dm6446evm_msp_driver);
i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
}
static struct platform_device *davinci_evm_devices[] __initdata = {
#if defined(CONFIG_MTD_PHYSMAP) || \
defined(CONFIG_MTD_PHYSMAP_MODULE)
&davinci_evm_norflash_device,
#endif
#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
&ide_dev,
#endif
&davinci_fb_device,
&rtc_dev,
};
static struct davinci_uart_config uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
static void __init
davinci_evm_map_io(void)
{
davinci_map_common_io();
dm644x_init();
}
static __init void davinci_evm_init(void)
static int davinci_phy_fixup(struct phy_device *phydev)
{
davinci_psc_init();
unsigned int control;
/* CRITICAL: Fix for increasing PHY signal drive strength for
* TX lockup issue. On DaVinci EVM, the Intel LXT971 PHY
* signal strength was low causing TX to fail randomly. The
* fix is to Set bit 11 (Increased MII drive strength) of PHY
* register 26 (Digital Config register) on this phy. */
control = phy_read(phydev, 26);
phy_write(phydev, 26, (control | 0x800));
return 0;
}
#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
#define HAS_ATA 1
#else
#define HAS_ATA 0
#endif
#if defined(CONFIG_MTD_PHYSMAP) || \
defined(CONFIG_MTD_PHYSMAP_MODULE)
printk(KERN_WARNING "WARNING: both IDE and NOR flash are enabled, "
"but share pins.\n\t Disable IDE for NOR support.\n");
#define HAS_NOR 1
#else
#define HAS_NOR 0
#endif
#if defined(CONFIG_MTD_NAND_DAVINCI) || \
defined(CONFIG_MTD_NAND_DAVINCI_MODULE)
#define HAS_NAND 1
#else
#define HAS_NAND 0
#endif
static __init void davinci_evm_init(void)
{
struct clk *aemif_clk;
aemif_clk = clk_get(NULL, "aemif");
clk_enable(aemif_clk);
if (HAS_ATA) {
if (HAS_NAND || HAS_NOR)
pr_warning("WARNING: both IDE and Flash are "
"enabled, but they share AEMIF pins.\n"
"\tDisable IDE for NAND/NOR support.\n");
davinci_cfg_reg(DM644X_HPIEN_DISABLE);
davinci_cfg_reg(DM644X_ATAEN);
davinci_cfg_reg(DM644X_HDIREN);
platform_device_register(&ide_dev);
} else if (HAS_NAND || HAS_NOR) {
davinci_cfg_reg(DM644X_HPIEN_DISABLE);
davinci_cfg_reg(DM644X_ATAEN_DISABLE);
/* only one device will be jumpered and detected */
if (HAS_NAND) {
platform_device_register(&davinci_evm_nandflash_device);
evm_leds[7].default_trigger = "nand-disk";
if (HAS_NOR)
pr_warning("WARNING: both NAND and NOR flash "
"are enabled; disable one of them.\n");
} else if (HAS_NOR)
platform_device_register(&davinci_evm_norflash_device);
}
platform_add_devices(davinci_evm_devices,
ARRAY_SIZE(davinci_evm_devices));
evm_init_i2c();
davinci_serial_init(&uart_config);
/* Register the fixup for PHY on DaVinci */
phy_register_fixup_for_uid(LXT971_PHY_ID, LXT971_PHY_MASK,
davinci_phy_fixup);
}
static __init void davinci_evm_irq_init(void)
{
davinci_init_common_hw();
davinci_irq_init();
}
MACHINE_START(DAVINCI_EVM, "DaVinci EVM")
MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
/* Maintainer: MontaVista Software <source@mvista.com> */
.phys_io = IO_PHYS,
.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,

383
arch/arm/mach-davinci/clock.c
View File

@ -1,7 +1,8 @@
/*
* TI DaVinci clock config file
* Clock and PLL control for DaVinci devices
*
* Copyright (C) 2006 Texas Instruments.
* Copyright (C) 2006-2007 Texas Instruments.
* Copyright (C) 2008-2009 Deep Root Systems, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -13,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
@ -21,98 +23,50 @@
#include <mach/hardware.h>
#include <mach/psc.h>
#include <mach/cputype.h>
#include "clock.h"
/* PLL/Reset register offsets */
#define PLLM 0x110
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
static DEFINE_SPINLOCK(clockfw_lock);
static unsigned int commonrate;
static unsigned int armrate;
static unsigned int fixedrate = 27000000; /* 27 MHZ */
extern void davinci_psc_config(unsigned int domain, unsigned int id, char enable);
/*
* Returns a clock. Note that we first try to use device id on the bus
* and clock name. If this fails, we try to use clock name only.
*/
struct clk *clk_get(struct device *dev, const char *id)
static unsigned psc_domain(struct clk *clk)
{
struct clk *p, *clk = ERR_PTR(-ENOENT);
int idno;
if (dev == NULL || dev->bus != &platform_bus_type)
idno = -1;
else
idno = to_platform_device(dev)->id;
mutex_lock(&clocks_mutex);
list_for_each_entry(p, &clocks, node) {
if (p->id == idno &&
strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
clk = p;
goto found;
}
}
list_for_each_entry(p, &clocks, node) {
if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
clk = p;
break;
}
}
found:
mutex_unlock(&clocks_mutex);
return clk;
return (clk->flags & PSC_DSP)
? DAVINCI_GPSC_DSPDOMAIN
: DAVINCI_GPSC_ARMDOMAIN;
}
EXPORT_SYMBOL(clk_get);
void clk_put(struct clk *clk)
static void __clk_enable(struct clk *clk)
{
if (clk && !IS_ERR(clk))
module_put(clk->owner);
}
EXPORT_SYMBOL(clk_put);
static int __clk_enable(struct clk *clk)
{
if (clk->flags & ALWAYS_ENABLED)
return 0;
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, clk->lpsc, 1);
return 0;
if (clk->parent)
__clk_enable(clk->parent);
if (clk->usecount++ == 0 && (clk->flags & CLK_PSC))
davinci_psc_config(psc_domain(clk), clk->lpsc, 1);
}
static void __clk_disable(struct clk *clk)
{
if (clk->usecount)
if (WARN_ON(clk->usecount == 0))
return;
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, clk->lpsc, 0);
if (--clk->usecount == 0 && !(clk->flags & CLK_PLL))
davinci_psc_config(psc_domain(clk), clk->lpsc, 0);
if (clk->parent)
__clk_disable(clk->parent);
}
int clk_enable(struct clk *clk)
{
unsigned long flags;
int ret = 0;
if (clk == NULL || IS_ERR(clk))
return -EINVAL;
if (clk->usecount++ == 0) {
spin_lock_irqsave(&clockfw_lock, flags);
ret = __clk_enable(clk);
spin_unlock_irqrestore(&clockfw_lock, flags);
}
spin_lock_irqsave(&clockfw_lock, flags);
__clk_enable(clk);
spin_unlock_irqrestore(&clockfw_lock, flags);
return ret;
return 0;
}
EXPORT_SYMBOL(clk_enable);
@ -123,11 +77,9 @@ void clk_disable(struct clk *clk)
if (clk == NULL || IS_ERR(clk))
return;
if (clk->usecount > 0 && !(--clk->usecount)) {
spin_lock_irqsave(&clockfw_lock, flags);
__clk_disable(clk);
spin_unlock_irqrestore(&clockfw_lock, flags);
}
spin_lock_irqsave(&clockfw_lock, flags);
__clk_disable(clk);
spin_unlock_irqrestore(&clockfw_lock, flags);
}
EXPORT_SYMBOL(clk_disable);
@ -136,7 +88,7 @@ unsigned long clk_get_rate(struct clk *clk)
if (clk == NULL || IS_ERR(clk))
return -EINVAL;
return *(clk->rate);
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);
@ -145,7 +97,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
if (clk == NULL || IS_ERR(clk))
return -EINVAL;
return *(clk->rate);
return clk->rate;
}
EXPORT_SYMBOL(clk_round_rate);
@ -164,10 +116,23 @@ int clk_register(struct clk *clk)
if (clk == NULL || IS_ERR(clk))
return -EINVAL;
if (WARN(clk->parent && !clk->parent->rate,
"CLK: %s parent %s has no rate!\n",
clk->name, clk->parent->name))
return -EINVAL;
mutex_lock(&clocks_mutex);
list_add(&clk->node, &clocks);
list_add_tail(&clk->node, &clocks);
mutex_unlock(&clocks_mutex);
/* If rate is already set, use it */
if (clk->rate)
return 0;
/* Otherwise, default to parent rate */
if (clk->parent)
clk->rate = clk->parent->rate;
return 0;
}
EXPORT_SYMBOL(clk_register);
@ -183,84 +148,150 @@ void clk_unregister(struct clk *clk)
}
EXPORT_SYMBOL(clk_unregister);
static struct clk davinci_clks[] = {
{
.name = "ARMCLK",
.rate = &armrate,
.lpsc = -1,
.flags = ALWAYS_ENABLED,
},
{
.name = "UART",
.rate = &fixedrate,
.lpsc = DAVINCI_LPSC_UART0,
},
{
.name = "EMACCLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_EMAC_WRAPPER,
},
{
.name = "I2CCLK",
.rate = &fixedrate,
.lpsc = DAVINCI_LPSC_I2C,
},
{
.name = "IDECLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_ATA,
},
{
.name = "McBSPCLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_McBSP,
},
{
.name = "MMCSDCLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_MMC_SD,
},
{
.name = "SPICLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_SPI,
},
{
.name = "gpio",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_GPIO,
},
{
.name = "usb",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_USB,
},
{
.name = "AEMIFCLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_AEMIF,
.usecount = 1,
}
};
int __init davinci_clk_init(void)
#ifdef CONFIG_DAVINCI_RESET_CLOCKS
/*
* Disable any unused clocks left on by the bootloader
*/
static int __init clk_disable_unused(void)
{
struct clk *clkp;
int count = 0;
u32 pll_mult;
struct clk *ck;
pll_mult = davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLM);
commonrate = ((pll_mult + 1) * 27000000) / 6;
armrate = ((pll_mult + 1) * 27000000) / 2;
spin_lock_irq(&clockfw_lock);
list_for_each_entry(ck, &clocks, node) {
if (ck->usecount > 0)
continue;
if (!(ck->flags & CLK_PSC))
continue;
for (clkp = davinci_clks; count < ARRAY_SIZE(davinci_clks);
count++, clkp++) {
clk_register(clkp);
/* ignore if in Disabled or SwRstDisable states */
if (!davinci_psc_is_clk_active(ck->lpsc))
continue;
/* Turn on clocks that have been enabled in the
* table above */
if (clkp->usecount)
clk_enable(clkp);
pr_info("Clocks: disable unused %s\n", ck->name);
davinci_psc_config(psc_domain(ck), ck->lpsc, 0);
}
spin_unlock_irq(&clockfw_lock);
return 0;
}
late_initcall(clk_disable_unused);
#endif
static void clk_sysclk_recalc(struct clk *clk)
{
u32 v, plldiv;
struct pll_data *pll;
/* If this is the PLL base clock, no more calculations needed */
if (clk->pll_data)
return;
if (WARN_ON(!clk->parent))
return;
clk->rate = clk->parent->rate;
/* Otherwise, the parent must be a PLL */
if (WARN_ON(!clk->parent->pll_data))
return;
pll = clk->parent->pll_data;
/* If pre-PLL, source clock is before the multiplier and divider(s) */
if (clk->flags & PRE_PLL)
clk->rate = pll->input_rate;
if (!clk->div_reg)
return;
v = __raw_readl(pll->base + clk->div_reg);
if (v & PLLDIV_EN) {
plldiv = (v & PLLDIV_RATIO_MASK) + 1;
if (plldiv)
clk->rate /= plldiv;
}
}
static void __init clk_pll_init(struct clk *clk)
{
u32 ctrl, mult = 1, prediv = 1, postdiv = 1;
u8 bypass;
struct pll_data *pll = clk->pll_data;
pll->base = IO_ADDRESS(pll->phys_base);
ctrl = __raw_readl(pll->base + PLLCTL);
clk->rate = pll->input_rate = clk->parent->rate;
if (ctrl & PLLCTL_PLLEN) {
bypass = 0;
mult = __raw_readl(pll->base + PLLM);
mult = (mult & PLLM_PLLM_MASK) + 1;
} else
bypass = 1;
if (pll->flags & PLL_HAS_PREDIV) {
prediv = __raw_readl(pll->base + PREDIV);
if (prediv & PLLDIV_EN)
prediv = (prediv & PLLDIV_RATIO_MASK) + 1;
else
prediv = 1;
}
/* pre-divider is fixed, but (some?) chips won't report that */
if (cpu_is_davinci_dm355() && pll->num == 1)
prediv = 8;
if (pll->flags & PLL_HAS_POSTDIV) {
postdiv = __raw_readl(pll->base + POSTDIV);
if (postdiv & PLLDIV_EN)
postdiv = (postdiv & PLLDIV_RATIO_MASK) + 1;
else
postdiv = 1;
}
if (!bypass) {
clk->rate /= prediv;
clk->rate *= mult;
clk->rate /= postdiv;
}
pr_debug("PLL%d: input = %lu MHz [ ",
pll->num, clk->parent->rate / 1000000);
if (bypass)
pr_debug("bypass ");
if (prediv > 1)
pr_debug("/ %d ", prediv);
if (mult > 1)
pr_debug("* %d ", mult);
if (postdiv > 1)
pr_debug("/ %d ", postdiv);
pr_debug("] --> %lu MHz output.\n", clk->rate / 1000000);
}
int __init davinci_clk_init(struct davinci_clk *clocks)
{
struct davinci_clk *c;
struct clk *clk;
for (c = clocks; c->lk.clk; c++) {
clk = c->lk.clk;
if (clk->pll_data)
clk_pll_init(clk);
/* Calculate rates for PLL-derived clocks */
else if (clk->flags & CLK_PLL)
clk_sysclk_recalc(clk);
if (clk->lpsc)
clk->flags |= CLK_PSC;
clkdev_add(&c->lk);
clk_register(clk);
/* Turn on clocks that Linux doesn't otherwise manage */
if (clk->flags & ALWAYS_ENABLED)
clk_enable(clk);
}
return 0;
@ -285,12 +316,52 @@ static void davinci_ck_stop(struct seq_file *m, void *v)
{
}
#define CLKNAME_MAX 10 /* longest clock name */
#define NEST_DELTA 2
#define NEST_MAX 4
static void
dump_clock(struct seq_file *s, unsigned nest, struct clk *parent)
{
char *state;
char buf[CLKNAME_MAX + NEST_DELTA * NEST_MAX];
struct clk *clk;
unsigned i;
if (parent->flags & CLK_PLL)
state = "pll";
else if (parent->flags & CLK_PSC)
state = "psc";
else
state = "";
/* <nest spaces> name <pad to end> */
memset(buf, ' ', sizeof(buf) - 1);
buf[sizeof(buf) - 1] = 0;
i = strlen(parent->name);
memcpy(buf + nest, parent->name,
min(i, (unsigned)(sizeof(buf) - 1 - nest)));
seq_printf(s, "%s users=%2d %-3s %9ld Hz\n",
buf, parent->usecount, state, clk_get_rate(parent));
/* REVISIT show device associations too */
/* cost is now small, but not linear... */
list_for_each_entry(clk, &clocks, node) {
if (clk->parent == parent)
dump_clock(s, nest + NEST_DELTA, clk);
}
}
static int davinci_ck_show(struct seq_file *m, void *v)
{
struct clk *cp;
list_for_each_entry(cp, &clocks, node)
seq_printf(m,"%s %d %d\n", cp->name, *(cp->rate), cp->usecount);
/* Show clock tree; we know the main oscillator is first.
* We trust nonzero usecounts equate to PSC enables...
*/
mutex_lock(&clocks_mutex);
if (!list_empty(&clocks))
dump_clock(m, 0, list_first_entry(&clocks, struct clk, node));
mutex_unlock(&clocks_mutex);
return 0;
}
@ -321,4 +392,4 @@ static int __init davinci_ck_proc_init(void)
}
__initcall(davinci_ck_proc_init);
#endif /* CONFIG_DEBUG_PROC_FS */
#endif /* CONFIG_DEBUG_PROC_FS */

87
arch/arm/mach-davinci/clock.h
View File

@ -1,7 +1,8 @@
/*
* TI DaVinci clock definitions
*
* Copyright (C) 2006 Texas Instruments.
* Copyright (C) 2006-2007 Texas Instruments.
* Copyright (C) 2008-2009 Deep Root Systems, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -11,23 +12,85 @@
#ifndef __ARCH_ARM_DAVINCI_CLOCK_H
#define __ARCH_ARM_DAVINCI_CLOCK_H
#include <linux/list.h>
#include <asm/clkdev.h>
#define DAVINCI_PLL1_BASE 0x01c40800
#define DAVINCI_PLL2_BASE 0x01c40c00
#define MAX_PLL 2
/* PLL/Reset register offsets */
#define PLLCTL 0x100
#define PLLCTL_PLLEN BIT(0)
#define PLLCTL_CLKMODE BIT(8)
#define PLLM 0x110
#define PLLM_PLLM_MASK 0xff
#define PREDIV 0x114
#define PLLDIV1 0x118
#define PLLDIV2 0x11c
#define PLLDIV3 0x120
#define POSTDIV 0x128
#define BPDIV 0x12c
#define PLLCMD 0x138
#define PLLSTAT 0x13c
#define PLLALNCTL 0x140
#define PLLDCHANGE 0x144
#define PLLCKEN 0x148
#define PLLCKSTAT 0x14c
#define PLLSYSTAT 0x150
#define PLLDIV4 0x160
#define PLLDIV5 0x164
#define PLLDIV6 0x168
#define PLLDIV7 0x16c
#define PLLDIV8 0x170
#define PLLDIV9 0x174
#define PLLDIV_EN BIT(15)
#define PLLDIV_RATIO_MASK 0x1f
struct pll_data {
u32 phys_base;
void __iomem *base;
u32 num;
u32 flags;
u32 input_rate;
};
#define PLL_HAS_PREDIV 0x01
#define PLL_HAS_POSTDIV 0x02
struct clk {
struct list_head node;
struct module *owner;
const char *name;
unsigned int *rate;
int id;
__s8 usecount;
__u8 flags;
__u8 lpsc;
unsigned long rate;
u8 usecount;
u8 flags;
u8 lpsc;
struct clk *parent;
struct pll_data *pll_data;
u32 div_reg;
};
/* Clock flags */
#define RATE_CKCTL 1
#define RATE_FIXED 2
#define RATE_PROPAGATES 4
#define VIRTUAL_CLOCK 8
#define ALWAYS_ENABLED 16
#define ENABLE_REG_32BIT 32
#define ALWAYS_ENABLED BIT(1)
#define CLK_PSC BIT(2)
#define PSC_DSP BIT(3) /* PSC uses DSP domain, not ARM */
#define CLK_PLL BIT(4) /* PLL-derived clock */
#define PRE_PLL BIT(5) /* source is before PLL mult/div */
struct davinci_clk {
struct clk_lookup lk;
};
#define CLK(dev, con, ck) \
{ \
.lk = { \
.dev_id = dev, \
.con_id = con, \
.clk = ck, \
}, \
}
int davinci_clk_init(struct davinci_clk *clocks);
#endif

7
arch/arm/mach-davinci/devices.c
View File

@ -21,6 +21,10 @@
#include <mach/hardware.h>
#include <mach/i2c.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <mach/mux.h>
#define DAVINCI_I2C_BASE 0x01C21000
static struct resource i2c_resources[] = {
{
@ -43,6 +47,9 @@ static struct platform_device davinci_i2c_device = {
void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
{
if (cpu_is_davinci_dm644x())
davinci_cfg_reg(DM644X_I2C);
davinci_i2c_device.dev.platform_data = pdata;
(void) platform_device_register(&davinci_i2c_device);
}

461
arch/arm/mach-davinci/dm644x.c Normal file
View File

@ -0,0 +1,461 @@
/*
* TI DaVinci DM644x chip specific setup
*
* Author: Kevin Hilman, Deep Root Systems, LLC
*
* 2007 (c) Deep Root Systems, LLC. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <mach/dm644x.h>
#include <mach/clock.h>
#include <mach/cputype.h>
#include <mach/edma.h>
#include <mach/irqs.h>
#include <mach/psc.h>
#include <mach/mux.h>
#include "clock.h"
#include "mux.h"
/*
* Device specific clocks
*/
#define DM644X_REF_FREQ 27000000
static struct pll_data pll1_data = {
.num = 1,
.phys_base = DAVINCI_PLL1_BASE,
};
static struct pll_data pll2_data = {
.num = 2,
.phys_base = DAVINCI_PLL2_BASE,
};
static struct clk ref_clk = {
.name = "ref_clk",
.rate = DM644X_REF_FREQ,
};
static struct clk pll1_clk = {
.name = "pll1",
.parent = &ref_clk,
.pll_data = &pll1_data,
.flags = CLK_PLL,
};
static struct clk pll1_sysclk1 = {
.name = "pll1_sysclk1",
.parent = &pll1_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV1,
};
static struct clk pll1_sysclk2 = {
.name = "pll1_sysclk2",
.parent = &pll1_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV2,
};
static struct clk pll1_sysclk3 = {
.name = "pll1_sysclk3",
.parent = &pll1_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV3,
};
static struct clk pll1_sysclk5 = {
.name = "pll1_sysclk5",
.parent = &pll1_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV5,
};
static struct clk pll1_aux_clk = {
.name = "pll1_aux_clk",
.parent = &pll1_clk,
.flags = CLK_PLL | PRE_PLL,
};
static struct clk pll1_sysclkbp = {
.name = "pll1_sysclkbp",
.parent = &pll1_clk,
.flags = CLK_PLL | PRE_PLL,
.div_reg = BPDIV
};
static struct clk pll2_clk = {
.name = "pll2",
.parent = &ref_clk,
.pll_data = &pll2_data,
.flags = CLK_PLL,
};
static struct clk pll2_sysclk1 = {
.name = "pll2_sysclk1",
.parent = &pll2_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV1,
};
static struct clk pll2_sysclk2 = {
.name = "pll2_sysclk2",
.parent = &pll2_clk,
.flags = CLK_PLL,
.div_reg = PLLDIV2,
};
static struct clk pll2_sysclkbp = {
.name = "pll2_sysclkbp",
.parent = &pll2_clk,
.flags = CLK_PLL | PRE_PLL,
.div_reg = BPDIV
};
static struct clk dsp_clk = {
.name = "dsp",
.parent = &pll1_sysclk1,
.lpsc = DAVINCI_LPSC_GEM,
.flags = PSC_DSP,
.usecount = 1, /* REVISIT how to disable? */
};
static struct clk arm_clk = {
.name = "arm",
.parent = &pll1_sysclk2,
.lpsc = DAVINCI_LPSC_ARM,
.flags = ALWAYS_ENABLED,
};
static struct clk vicp_clk = {
.name = "vicp",
.parent = &pll1_sysclk2,
.lpsc = DAVINCI_LPSC_IMCOP,
.flags = PSC_DSP,
.usecount = 1, /* REVISIT how to disable? */
};
static struct clk vpss_master_clk = {
.name = "vpss_master",
.parent = &pll1_sysclk3,
.lpsc = DAVINCI_LPSC_VPSSMSTR,
.flags = CLK_PSC,
};
static struct clk vpss_slave_clk = {
.name = "vpss_slave",
.parent = &pll1_sysclk3,
.lpsc = DAVINCI_LPSC_VPSSSLV,
};
static struct clk uart0_clk = {
.name = "uart0",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_UART0,
};
static struct clk uart1_clk = {
.name = "uart1",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_UART1,
};
static struct clk uart2_clk = {
.name = "uart2",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_UART2,
};
static struct clk emac_clk = {
.name = "emac",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_EMAC_WRAPPER,
};
static struct clk i2c_clk = {
.name = "i2c",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_I2C,
};
static struct clk ide_clk = {
.name = "ide",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_ATA,
};
static struct clk asp_clk = {
.name = "asp0",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_McBSP,
};
static struct clk mmcsd_clk = {
.name = "mmcsd",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_MMC_SD,
};
static struct clk spi_clk = {
.name = "spi",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_SPI,
};
static struct clk gpio_clk = {
.name = "gpio",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_GPIO,
};
static struct clk usb_clk = {
.name = "usb",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_USB,
};
static struct clk vlynq_clk = {
.name = "vlynq",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_VLYNQ,
};
static struct clk aemif_clk = {
.name = "aemif",
.parent = &pll1_sysclk5,
.lpsc = DAVINCI_LPSC_AEMIF,
};
static struct clk pwm0_clk = {
.name = "pwm0",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_PWM0,
};
static struct clk pwm1_clk = {
.name = "pwm1",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_PWM1,
};
static struct clk pwm2_clk = {
.name = "pwm2",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_PWM2,
};
static struct clk timer0_clk = {
.name = "timer0",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_TIMER0,
};
static struct clk timer1_clk = {
.name = "timer1",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_TIMER1,
};
static struct clk timer2_clk = {
.name = "timer2",
.parent = &pll1_aux_clk,
.lpsc = DAVINCI_LPSC_TIMER2,
.usecount = 1, /* REVISIT: why cant' this be disabled? */
};
struct davinci_clk dm644x_clks[] = {
CLK(NULL, "ref", &ref_clk),
CLK(NULL, "pll1", &pll1_clk),
CLK(NULL, "pll1_sysclk1", &pll1_sysclk1),
CLK(NULL, "pll1_sysclk2", &pll1_sysclk2),
CLK(NULL, "pll1_sysclk3", &pll1_sysclk3),
CLK(NULL, "pll1_sysclk5", &pll1_sysclk5),
CLK(NULL, "pll1_aux", &pll1_aux_clk),
CLK(NULL, "pll1_sysclkbp", &pll1_sysclkbp),
CLK(NULL, "pll2", &pll2_clk),
CLK(NULL, "pll2_sysclk1", &pll2_sysclk1),
CLK(NULL, "pll2_sysclk2", &pll2_sysclk2),
CLK(NULL, "pll2_sysclkbp", &pll2_sysclkbp),
CLK(NULL, "dsp", &dsp_clk),
CLK(NULL, "arm", &arm_clk),
CLK(NULL, "vicp", &vicp_clk),
CLK(NULL, "vpss_master", &vpss_master_clk),
CLK(NULL, "vpss_slave", &vpss_slave_clk),
CLK(NULL, "arm", &arm_clk),
CLK(NULL, "uart0", &uart0_clk),
CLK(NULL, "uart1", &uart1_clk),
CLK(NULL, "uart2", &uart2_clk),
CLK("davinci_emac.1", NULL, &emac_clk),
CLK("i2c_davinci.1", NULL, &i2c_clk),
CLK("palm_bk3710", NULL, &ide_clk),
CLK("soc-audio.0", NULL, &asp_clk),
CLK("davinci_mmc.0", NULL, &mmcsd_clk),
CLK(NULL, "spi", &spi_clk),
CLK(NULL, "gpio", &gpio_clk),
CLK(NULL, "usb", &usb_clk),
CLK(NULL, "vlynq", &vlynq_clk),
CLK(NULL, "aemif", &aemif_clk),
CLK(NULL, "pwm0", &pwm0_clk),
CLK(NULL, "pwm1", &pwm1_clk),
CLK(NULL, "pwm2", &pwm2_clk),
CLK(NULL, "timer0", &timer0_clk),
CLK(NULL, "timer1", &timer1_clk),
CLK("watchdog", NULL, &timer2_clk),
CLK(NULL, NULL, NULL),
};
#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
static struct resource dm644x_emac_resources[] = {
{
.start = DM644X_EMAC_BASE,
.end = DM644X_EMAC_BASE + 0x47ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_EMACINT,
.end = IRQ_EMACINT,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device dm644x_emac_device = {
.name = "davinci_emac",
.id = 1,
.num_resources = ARRAY_SIZE(dm644x_emac_resources),
.resource = dm644x_emac_resources,
};
#endif
/*
* Device specific mux setup
*
* soc description mux mode mode mux dbg
* reg offset mask mode
*/
static const struct mux_config dm644x_pins[] = {
MUX_CFG(DM644X, HDIREN, 0, 16, 1, 1, true)
MUX_CFG(DM644X, ATAEN, 0, 17, 1, 1, true)
MUX_CFG(DM644X, ATAEN_DISABLE, 0, 17, 1, 0, true)
MUX_CFG(DM644X, HPIEN_DISABLE, 0, 29, 1, 0, true)
MUX_CFG(DM644X, AEAW, 0, 0, 31, 31, true)
MUX_CFG(DM644X, MSTK, 1, 9, 1, 0, false)
MUX_CFG(DM644X, I2C, 1, 7, 1, 1, false)
MUX_CFG(DM644X, MCBSP, 1, 10, 1, 1, false)
MUX_CFG(DM644X, UART1, 1, 1, 1, 1, true)
MUX_CFG(DM644X, UART2, 1, 2, 1, 1, true)
MUX_CFG(DM644X, PWM0, 1, 4, 1, 1, false)
MUX_CFG(DM644X, PWM1, 1, 5, 1, 1, false)
MUX_CFG(DM644X, PWM2, 1, 6, 1, 1, false)
MUX_CFG(DM644X, VLYNQEN, 0, 15, 1, 1, false)
MUX_CFG(DM644X, VLSCREN, 0, 14, 1, 1, false)
MUX_CFG(DM644X, VLYNQWD, 0, 12, 3, 3, false)
MUX_CFG(DM644X, EMACEN, 0, 31, 1, 1, true)
MUX_CFG(DM644X, GPIO3V, 0, 31, 1, 0, true)
MUX_CFG(DM644X, GPIO0, 0, 24, 1, 0, true)
MUX_CFG(DM644X, GPIO3, 0, 25, 1, 0, false)
MUX_CFG(DM644X, GPIO43_44, 1, 7, 1, 0, false)
MUX_CFG(DM644X, GPIO46_47, 0, 22, 1, 0, true)
MUX_CFG(DM644X, RGB666, 0, 22, 1, 1, true)
MUX_CFG(DM644X, LOEEN, 0, 24, 1, 1, true)
MUX_CFG(DM644X, LFLDEN, 0, 25, 1, 1, false)
};
/*----------------------------------------------------------------------*/
static const s8 dma_chan_dm644x_no_event[] = {
0, 1, 12, 13, 14,
15, 25, 30, 31, 45,
46, 47, 55, 56, 57,
58, 59, 60, 61, 62,
63,
-1
};
static struct edma_soc_info dm644x_edma_info = {
.n_channel = 64,
.n_region = 4,
.n_slot = 128,
.n_tc = 2,
.noevent = dma_chan_dm644x_no_event,
};
static struct resource edma_resources[] = {
{
.name = "edma_cc",
.start = 0x01c00000,
.end = 0x01c00000 + SZ_64K - 1,
.flags = IORESOURCE_MEM,
},
{
.name = "edma_tc0",
.start = 0x01c10000,
.end = 0x01c10000 + SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
{
.name = "edma_tc1",
.start = 0x01c10400,
.end = 0x01c10400 + SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_CCINT0,
.flags = IORESOURCE_IRQ,
},
{
.start = IRQ_CCERRINT,
.flags = IORESOURCE_IRQ,
},
/* not using TC*_ERR */
};
static struct platform_device dm644x_edma_device = {
.name = "edma",
.id = -1,
.dev.platform_data = &dm644x_edma_info,
.num_resources = ARRAY_SIZE(edma_resources),
.resource = edma_resources,
};
/*----------------------------------------------------------------------*/
void __init dm644x_init(void)
{
davinci_clk_init(dm644x_clks);
davinci_mux_register(dm644x_pins, ARRAY_SIZE(dm644x_pins));
}
static int __init dm644x_init_devices(void)
{
if (!cpu_is_davinci_dm644x())
return 0;
platform_device_register(&dm644x_edma_device);
return 0;
}
postcore_initcall(dm644x_init_devices);

1135
arch/arm/mach-davinci/dma.c Normal file
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File diff suppressed because it is too large Load Diff

82
arch/arm/mach-davinci/gpio.c
View File

@ -20,6 +20,7 @@
#include <linux/irq.h>
#include <linux/bitops.h>
#include <mach/cputype.h>
#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
@ -36,9 +37,10 @@ struct davinci_gpio {
static struct davinci_gpio chips[DIV_ROUND_UP(DAVINCI_N_GPIO, 32)];
static unsigned __initdata ngpio;
/* create a non-inlined version */
static struct gpio_controller *__iomem __init gpio2controller(unsigned gpio)
static struct gpio_controller __iomem * __init gpio2controller(unsigned gpio)
{
return __gpio_to_controller(gpio);
}
@ -114,9 +116,30 @@ static int __init davinci_gpio_setup(void)
{
int i, base;
for (i = 0, base = 0;
i < ARRAY_SIZE(chips);
i++, base += 32) {
/* The gpio banks conceptually expose a segmented bitmap,
* and "ngpio" is one more than the largest zero-based
* bit index that's valid.
*/
if (cpu_is_davinci_dm355()) { /* or dm335() */
ngpio = 104;
} else if (cpu_is_davinci_dm644x()) { /* or dm337() */
ngpio = 71;
} else if (cpu_is_davinci_dm646x()) {
/* NOTE: each bank has several "reserved" bits,
* unusable as GPIOs. Only 33 of the GPIO numbers
* are usable, and we're not rejecting the others.
*/
ngpio = 43;
} else {
/* if cpu_is_davinci_dm643x() ngpio = 111 */
pr_err("GPIO setup: how many GPIOs?\n");
return -EINVAL;
}
if (WARN_ON(DAVINCI_N_GPIO < ngpio))
ngpio = DAVINCI_N_GPIO;
for (i = 0, base = 0; base < ngpio; i++, base += 32) {
chips[i].chip.label = "DaVinci";
chips[i].chip.direction_input = davinci_direction_in;
@ -125,7 +148,7 @@ static int __init davinci_gpio_setup(void)
chips[i].chip.set = davinci_gpio_set;
chips[i].chip.base = base;
chips[i].chip.ngpio = DAVINCI_N_GPIO - base;
chips[i].chip.ngpio = ngpio - base;
if (chips[i].chip.ngpio > 32)
chips[i].chip.ngpio = 32;
@ -143,11 +166,11 @@ pure_initcall(davinci_gpio_setup);
* We expect irqs will normally be set up as input pins, but they can also be
* used as output pins ... which is convenient for testing.
*
* NOTE: GPIO0..GPIO7 also have direct INTC hookups, which work in addition
* to their GPIOBNK0 irq (but with a bit less overhead). But we don't have
* a good way to hook those up ...
* NOTE: The first few GPIOs also have direct INTC hookups in addition
* to their GPIOBNK0 irq, with a bit less overhead but less flexibility
* on triggering (e.g. no edge options). We don't try to use those.
*
* All those INTC hookups (GPIO0..GPIO7 plus five IRQ banks) can also
* All those INTC hookups (direct, plus several IRQ banks) can also
* serve as EDMA event triggers.
*/
@ -235,29 +258,42 @@ gpio_irq_handler(unsigned irq, struct irq_desc *desc)
}
/*
* NOTE: for suspend/resume, probably best to make a sysdev (and class)
* with its suspend/resume calls hooking into the results of the set_wake()
* NOTE: for suspend/resume, probably best to make a platform_device with
* suspend_late/resume_resume calls hooking into results of the set_wake()
* calls ... so if no gpios are wakeup events the clock can be disabled,
* with outputs left at previously set levels, and so that VDD3P3V.IOPWDN0
* can be set appropriately for GPIOV33 pins.
* (dm6446) can be set appropriately for GPIOV33 pins.
*/
static int __init davinci_gpio_irq_setup(void)
{
unsigned gpio, irq, bank;
unsigned bank_irq;
struct clk *clk;
u32 binten = 0;
if (cpu_is_davinci_dm355()) { /* or dm335() */
bank_irq = IRQ_DM355_GPIOBNK0;
} else if (cpu_is_davinci_dm644x()) {
bank_irq = IRQ_GPIOBNK0;
} else if (cpu_is_davinci_dm646x()) {
bank_irq = IRQ_DM646X_GPIOBNK0;
} else {
printk(KERN_ERR "Don't know first GPIO bank IRQ.\n");
return -EINVAL;
}
clk = clk_get(NULL, "gpio");
if (IS_ERR(clk)) {
printk(KERN_ERR "Error %ld getting gpio clock?\n",
PTR_ERR(clk));
return 0;
return PTR_ERR(clk);
}
clk_enable(clk);
for (gpio = 0, irq = gpio_to_irq(0), bank = IRQ_GPIOBNK0;
gpio < DAVINCI_N_GPIO; bank++) {
for (gpio = 0, irq = gpio_to_irq(0), bank = 0;
gpio < ngpio;
bank++, bank_irq++) {
struct gpio_controller *__iomem g = gpio2controller(gpio);
unsigned i;
@ -265,28 +301,28 @@ static int __init davinci_gpio_irq_setup(void)
__raw_writel(~0, &g->clr_rising);
/* set up all irqs in this bank */
set_irq_chained_handler(bank, gpio_irq_handler);
set_irq_chip_data(bank, g);
set_irq_data(bank, (void *)irq);
set_irq_chained_handler(bank_irq, gpio_irq_handler);
set_irq_chip_data(bank_irq, g);
set_irq_data(bank_irq, (void *)irq);
for (i = 0; i < 16 && gpio < DAVINCI_N_GPIO;
i++, irq++, gpio++) {
for (i = 0; i < 16 && gpio < ngpio; i++, irq++, gpio++) {
set_irq_chip(irq, &gpio_irqchip);
set_irq_chip_data(irq, g);
set_irq_handler(irq, handle_simple_irq);
set_irq_flags(irq, IRQF_VALID);
}
binten |= BIT(bank);
}
/* BINTEN -- per-bank interrupt enable. genirq would also let these
* bits be set/cleared dynamically.
*/
__raw_writel(0x1f, (void *__iomem)
__raw_writel(binten, (void *__iomem)
IO_ADDRESS(DAVINCI_GPIO_BASE + 0x08));
printk(KERN_INFO "DaVinci: %d gpio irqs\n", irq - gpio_to_irq(0));
return 0;
}
arch_initcall(davinci_gpio_irq_setup);

35
arch/arm/mach-davinci/id.c
View File

@ -15,7 +15,9 @@
#include <linux/init.h>
#include <linux/io.h>
#define JTAG_ID_BASE 0x01c40028
#define JTAG_ID_BASE IO_ADDRESS(0x01c40028)
static unsigned int davinci_revision;
struct davinci_id {
u8 variant; /* JTAG ID bits 31:28 */
@ -33,6 +35,20 @@ static struct davinci_id davinci_ids[] __initdata = {
.manufacturer = 0x017,
.type = 0x64460000,
},
{
/* DM646X */
.part_no = 0xb770,
.variant = 0x0,
.manufacturer = 0x017,
.type = 0x64670000,
},
{
/* DM355 */
.part_no = 0xb73b,
.variant = 0x0,
.manufacturer = 0x00f,
.type = 0x03550000,
},
};
/*
@ -42,7 +58,7 @@ static u16 __init davinci_get_part_no(void)
{
u32 dev_id, part_no;
dev_id = davinci_readl(JTAG_ID_BASE);
dev_id = __raw_readl(JTAG_ID_BASE);
part_no = ((dev_id >> 12) & 0xffff);
@ -56,13 +72,19 @@ static u8 __init davinci_get_variant(void)
{
u32 variant;
variant = davinci_readl(JTAG_ID_BASE);
variant = __raw_readl(JTAG_ID_BASE);
variant = (variant >> 28) & 0xf;
return variant;
}
unsigned int davinci_rev(void)
{
return davinci_revision >> 16;
}
EXPORT_SYMBOL(davinci_rev);
void __init davinci_check_revision(void)
{
int i;
@ -75,7 +97,7 @@ void __init davinci_check_revision(void)
/* First check only the major version in a safe way */
for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) {
if (part_no == (davinci_ids[i].part_no)) {
system_rev = davinci_ids[i].type;
davinci_revision = davinci_ids[i].type;
break;
}
}
@ -84,10 +106,11 @@ void __init davinci_check_revision(void)
for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) {
if (part_no == davinci_ids[i].part_no &&
variant == davinci_ids[i].variant) {
system_rev = davinci_ids[i].type;
davinci_revision = davinci_ids[i].type;
break;
}
}
printk("DaVinci DM%04x variant 0x%x\n", system_rev >> 16, variant);
printk(KERN_INFO "DaVinci DM%04x variant 0x%x\n",
davinci_rev(), variant);
}

20
arch/arm/mach-davinci/include/mach/board-dm6446evm.h Normal file
View File

@ -0,0 +1,20 @@
/*
* DaVinci DM6446 EVM board specific headers
*
* Author: Kevin Hilman, Deep Root Systems, LLC
*
* 2007 (c) Deep Root Systems, LLC. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or ifndef.
*/
#ifndef _MACH_DAVINCI_DM6446EVM_H
#define _MACH_DAVINCI_DM6446EVM_H
#include <linux/types.h>
int dm6446evm_eeprom_read(char *buf, off_t off, size_t count);
int dm6446evm_eeprom_write(char *buf, off_t off, size_t count);
#endif

13
arch/arm/mach-davinci/include/mach/clkdev.h Normal file
View File

@ -0,0 +1,13 @@
#ifndef __MACH_CLKDEV_H
#define __MACH_CLKDEV_H
static inline int __clk_get(struct clk *clk)
{
return 1;
}
static inline void __clk_put(struct clk *clk)
{
}
#endif

1
arch/arm/mach-davinci/include/mach/clock.h
View File

@ -17,6 +17,5 @@ struct clk;
extern int clk_register(struct clk *clk);
extern void clk_unregister(struct clk *clk);
extern int davinci_clk_init(void);
#endif

6
arch/arm/mach-davinci/include/mach/common.h
View File

@ -16,6 +16,12 @@ struct sys_timer;
extern struct sys_timer davinci_timer;
extern void davinci_irq_init(void);
extern void davinci_map_common_io(void);
/* parameters describe VBUS sourcing for host mode */
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
/* parameters describe VBUS sourcing for host mode */
extern void setup_usb(unsigned mA, unsigned potpgt_msec);

49
arch/arm/mach-davinci/include/mach/cputype.h Normal file
View File

@ -0,0 +1,49 @@
/*
* DaVinci CPU type detection
*
* Author: Kevin Hilman, Deep Root Systems, LLC
*
* Defines the cpu_is_*() macros for runtime detection of DaVinci
* device type. In addtion, if support for a given device is not
* compiled in to the kernel, the macros return 0 so that
* resulting code can be optimized out.
*
* 2009 (c) Deep Root Systems, LLC. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#ifndef _ASM_ARCH_CPU_H
#define _ASM_ARCH_CPU_H
extern unsigned int davinci_rev(void);
#define IS_DAVINCI_CPU(type, id) \
static inline int is_davinci_dm ##type(void) \
{ \
return (davinci_rev() == (id)) ? 1 : 0; \
}
IS_DAVINCI_CPU(644x, 0x6446)
IS_DAVINCI_CPU(646x, 0x6467)
IS_DAVINCI_CPU(355, 0x355)
#ifdef CONFIG_ARCH_DAVINCI_DM644x
#define cpu_is_davinci_dm644x() is_davinci_dm644x()
#else
#define cpu_is_davinci_dm644x() 0
#endif
#ifdef CONFIG_ARCH_DAVINCI_DM646x
#define cpu_is_davinci_dm646x() is_davinci_dm646x()
#else
#define cpu_is_davinci_dm646x() 0
#endif
#ifdef CONFIG_ARCH_DAVINCI_DM355
#define cpu_is_davinci_dm355() is_davinci_dm355()
#else
#define cpu_is_davinci_dm355() 0
#endif
#endif

37
arch/arm/mach-davinci/include/mach/dm644x.h Normal file
View File

@ -0,0 +1,37 @@
/*
* This file contains the processor specific definitions
* of the TI DM644x.
*
* Copyright (C) 2008 Texas Instruments.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_ARCH_DM644X_H
#define __ASM_ARCH_DM644X_H
#include <linux/platform_device.h>
#include <mach/hardware.h>
#define DM644X_EMAC_BASE (0x01C80000)
#define DM644X_EMAC_CNTRL_OFFSET (0x0000)
#define DM644X_EMAC_CNTRL_MOD_OFFSET (0x1000)
#define DM644X_EMAC_CNTRL_RAM_OFFSET (0x2000)
#define DM644X_EMAC_MDIO_OFFSET (0x4000)
#define DM644X_EMAC_CNTRL_RAM_SIZE (0x2000)
void __init dm644x_init(void);
#endif /* __ASM_ARCH_DM644X_H */

228
arch/arm/mach-davinci/include/mach/edma.h Normal file
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@ -0,0 +1,228 @@
/*
* TI DAVINCI dma definitions
*
* Copyright (C) 2006-2009 Texas Instruments.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* This EDMA3 programming framework exposes two basic kinds of resource:
*
* Channel Triggers transfers, usually from a hardware event but
* also manually or by "chaining" from DMA completions.
* Each channel is coupled to a Parameter RAM (PaRAM) slot.
*
* Slot Each PaRAM slot holds a DMA transfer descriptor (PaRAM
* "set"), source and destination addresses, a link to a
* next PaRAM slot (if any), options for the transfer, and
* instructions for updating those addresses. There are
* more than twice as many slots as event channels.
*
* Each PaRAM set describes a sequence of transfers, either for one large
* buffer or for several discontiguous smaller buffers. An EDMA transfer
* is driven only from a channel, which performs the transfers specified
* in its PaRAM slot until there are no more transfers. When that last
* transfer completes, the "link" field may be used to reload the channel's
* PaRAM slot with a new transfer descriptor.
*
* The EDMA Channel Controller (CC) maps requests from channels into physical
* Transfer Controller (TC) requests when the channel triggers (by hardware
* or software events, or by chaining). The two physical DMA channels provided
* by the TCs are thus shared by many logical channels.
*
* DaVinci hardware also has a "QDMA" mechanism which is not currently
* supported through this interface. (DSP firmware uses it though.)
*/
#ifndef EDMA_H_
#define EDMA_H_
/* PaRAM slots are laid out like this */
struct edmacc_param {
unsigned int opt;
unsigned int src;
unsigned int a_b_cnt;
unsigned int dst;
unsigned int src_dst_bidx;
unsigned int link_bcntrld;
unsigned int src_dst_cidx;
unsigned int ccnt;
};
#define CCINT0_INTERRUPT 16
#define CCERRINT_INTERRUPT 17
#define TCERRINT0_INTERRUPT 18
#define TCERRINT1_INTERRUPT 19
/* fields in edmacc_param.opt */
#define SAM BIT(0)
#define DAM BIT(1)
#define SYNCDIM BIT(2)
#define STATIC BIT(3)
#define EDMA_FWID (0x07 << 8)
#define TCCMODE BIT(11)
#define EDMA_TCC(t) ((t) << 12)
#define TCINTEN BIT(20)
#define ITCINTEN BIT(21)
#define TCCHEN BIT(22)
#define ITCCHEN BIT(23)
#define TRWORD (0x7<<2)
#define PAENTRY (0x1ff<<5)
/* Drivers should avoid using these symbolic names for dm644x
* channels, and use platform_device IORESOURCE_DMA resources
* instead. (Other DaVinci chips have different peripherals
* and thus have different DMA channel mappings.)
*/
#define DAVINCI_DMA_MCBSP_TX 2
#define DAVINCI_DMA_MCBSP_RX 3
#define DAVINCI_DMA_VPSS_HIST 4
#define DAVINCI_DMA_VPSS_H3A 5
#define DAVINCI_DMA_VPSS_PRVU 6
#define DAVINCI_DMA_VPSS_RSZ 7
#define DAVINCI_DMA_IMCOP_IMXINT 8
#define DAVINCI_DMA_IMCOP_VLCDINT 9
#define DAVINCI_DMA_IMCO_PASQINT 10
#define DAVINCI_DMA_IMCOP_DSQINT 11
#define DAVINCI_DMA_SPI_SPIX 16
#define DAVINCI_DMA_SPI_SPIR 17
#define DAVINCI_DMA_UART0_URXEVT0 18
#define DAVINCI_DMA_UART0_UTXEVT0 19
#define DAVINCI_DMA_UART1_URXEVT1 20
#define DAVINCI_DMA_UART1_UTXEVT1 21
#define DAVINCI_DMA_UART2_URXEVT2 22
#define DAVINCI_DMA_UART2_UTXEVT2 23
#define DAVINCI_DMA_MEMSTK_MSEVT 24
#define DAVINCI_DMA_MMCRXEVT 26
#define DAVINCI_DMA_MMCTXEVT 27
#define DAVINCI_DMA_I2C_ICREVT 28
#define DAVINCI_DMA_I2C_ICXEVT 29
#define DAVINCI_DMA_GPIO_GPINT0 32
#define DAVINCI_DMA_GPIO_GPINT1 33
#define DAVINCI_DMA_GPIO_GPINT2 34
#define DAVINCI_DMA_GPIO_GPINT3 35
#define DAVINCI_DMA_GPIO_GPINT4 36
#define DAVINCI_DMA_GPIO_GPINT5 37
#define DAVINCI_DMA_GPIO_GPINT6 38
#define DAVINCI_DMA_GPIO_GPINT7 39
#define DAVINCI_DMA_GPIO_GPBNKINT0 40
#define DAVINCI_DMA_GPIO_GPBNKINT1 41
#define DAVINCI_DMA_GPIO_GPBNKINT2 42
#define DAVINCI_DMA_GPIO_GPBNKINT3 43
#define DAVINCI_DMA_GPIO_GPBNKINT4 44
#define DAVINCI_DMA_TIMER0_TINT0 48
#define DAVINCI_DMA_TIMER1_TINT1 49
#define DAVINCI_DMA_TIMER2_TINT2 50
#define DAVINCI_DMA_TIMER3_TINT3 51
#define DAVINCI_DMA_PWM0 52
#define DAVINCI_DMA_PWM1 53
#define DAVINCI_DMA_PWM2 54
/*ch_status paramater of callback function possible values*/
#define DMA_COMPLETE 1
#define DMA_CC_ERROR 2
#define DMA_TC1_ERROR 3
#define DMA_TC2_ERROR 4
enum address_mode {
INCR = 0,
FIFO = 1
};
enum fifo_width {
W8BIT = 0,
W16BIT = 1,
W32BIT = 2,
W64BIT = 3,
W128BIT = 4,
W256BIT = 5
};
enum dma_event_q {
EVENTQ_0 = 0,
EVENTQ_1 = 1,
EVENTQ_DEFAULT = -1
};
enum sync_dimension {
ASYNC = 0,
ABSYNC = 1
};
#define EDMA_CHANNEL_ANY -1 /* for edma_alloc_channel() */
#define EDMA_SLOT_ANY -1 /* for edma_alloc_slot() */
/* alloc/free DMA channels and their dedicated parameter RAM slots */
int edma_alloc_channel(int channel,
void (*callback)(unsigned channel, u16 ch_status, void *data),
void *data, enum dma_event_q);
void edma_free_channel(unsigned channel);
/* alloc/free parameter RAM slots */
int edma_alloc_slot(int slot);
void edma_free_slot(unsigned slot);
/* calls that operate on part of a parameter RAM slot */
void edma_set_src(unsigned slot, dma_addr_t src_port,
enum address_mode mode, enum fifo_width);
void edma_set_dest(unsigned slot, dma_addr_t dest_port,
enum address_mode mode, enum fifo_width);
void edma_get_position(unsigned slot, dma_addr_t *src, dma_addr_t *dst);
void edma_set_src_index(unsigned slot, s16 src_bidx, s16 src_cidx);
void edma_set_dest_index(unsigned slot, s16 dest_bidx, s16 dest_cidx);
void edma_set_transfer_params(unsigned slot, u16 acnt, u16 bcnt, u16 ccnt,
u16 bcnt_rld, enum sync_dimension sync_mode);
void edma_link(unsigned from, unsigned to);
void edma_unlink(unsigned from);
/* calls that operate on an entire parameter RAM slot */
void edma_write_slot(unsigned slot, const struct edmacc_param *params);
void edma_read_slot(unsigned slot, struct edmacc_param *params);
/* channel control operations */
int edma_start(unsigned channel);
void edma_stop(unsigned channel);
void edma_clean_channel(unsigned channel);
void edma_clear_event(unsigned channel);
void edma_pause(unsigned channel);
void edma_resume(unsigned channel);
/* UNRELATED TO DMA */
int davinci_alloc_iram(unsigned size);
void davinci_free_iram(unsigned addr, unsigned size);
/* platform_data for EDMA driver */
struct edma_soc_info {
/* how many dma resources of each type */
unsigned n_channel;
unsigned n_region;
unsigned n_slot;
unsigned n_tc;
/* list of channels with no even trigger; terminated by "-1" */
const s8 *noevent;
};
#endif

27
arch/arm/mach-davinci/include/mach/gpio.h
View File

@ -15,9 +15,11 @@
#include <linux/io.h>
#include <asm-generic/gpio.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#define DAVINCI_GPIO_BASE 0x01C67000
/*
* basic gpio routines
*
@ -26,23 +28,18 @@
* go through boot loaders.
*
* the gpio clock will be turned on when gpios are used, and you may also
* need to pay attention to PINMUX0 and PINMUX1 to be sure those pins are
* need to pay attention to PINMUX registers to be sure those pins are
* used as gpios, not with other peripherals.
*
* On-chip GPIOs are numbered 0..(DAVINCI_N_GPIO-1). For documentation,
* and maybe for later updates, code should write GPIO(N) or:
* - GPIOV18(N) for 1.8V pins, N in 0..53; same as GPIO(0)..GPIO(53)
* - GPIOV33(N) for 3.3V pins, N in 0..17; same as GPIO(54)..GPIO(70)
*
* For GPIO IRQs use gpio_to_irq(GPIO(N)) or gpio_to_irq(GPIOV33(N)) etc
* for now, that's != GPIO(N)
* and maybe for later updates, code may write GPIO(N). These may be
* all 1.8V signals, all 3.3V ones, or a mix of the two. A given chip
* may not support all the GPIOs in that range.
*
* GPIOs can also be on external chips, numbered after the ones built-in
* to the DaVinci chip. For now, they won't be usable as IRQ sources.
*/
#define GPIO(X) (X) /* 0 <= X <= 70 */
#define GPIOV18(X) (X) /* 1.8V i/o; 0 <= X <= 53 */
#define GPIOV33(X) ((X)+54) /* 3.3V i/o; 0 <= X <= 17 */
#define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
struct gpio_controller {
u32 dir;
@ -71,12 +68,14 @@ __gpio_to_controller(unsigned gpio)
{
void *__iomem ptr;
if (gpio < 32)
if (gpio < 32 * 1)
ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x10);
else if (gpio < 64)
else if (gpio < 32 * 2)
ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x38);
else if (gpio < DAVINCI_N_GPIO)
else if (gpio < 32 * 3)
ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x60);
else if (gpio < 32 * 4)
ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x88);
else
ptr = NULL;
return ptr;

51
arch/arm/mach-davinci/include/mach/hardware.h
View File

@ -1,9 +1,9 @@
/*
* Common hardware definitions
* Hardware definitions common to all DaVinci family processors
*
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
* Author: Kevin Hilman, Deep Root Systems, LLC
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* 2007 (c) Deep Root Systems, LLC. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
@ -12,41 +12,16 @@
#define __ASM_ARCH_HARDWARE_H
/*
* Base register addresses
* Before you add anything to ths file:
*
* This header is for defines common to ALL DaVinci family chips.
* Anything that is chip specific should go in <chipname>.h,
* and the chip/board init code should then explicitly include
* <chipname>.h
*/
#define DAVINCI_DMA_3PCC_BASE (0x01C00000)
#define DAVINCI_DMA_3PTC0_BASE (0x01C10000)
#define DAVINCI_DMA_3PTC1_BASE (0x01C10400)
#define DAVINCI_I2C_BASE (0x01C21000)
#define DAVINCI_PWM0_BASE (0x01C22000)
#define DAVINCI_PWM1_BASE (0x01C22400)
#define DAVINCI_PWM2_BASE (0x01C22800)
#define DAVINCI_SYSTEM_MODULE_BASE (0x01C40000)
#define DAVINCI_PLL_CNTRL0_BASE (0x01C40800)
#define DAVINCI_PLL_CNTRL1_BASE (0x01C40C00)
#define DAVINCI_PWR_SLEEP_CNTRL_BASE (0x01C41000)
#define DAVINCI_SYSTEM_DFT_BASE (0x01C42000)
#define DAVINCI_IEEE1394_BASE (0x01C60000)
#define DAVINCI_USB_OTG_BASE (0x01C64000)
#define DAVINCI_CFC_ATA_BASE (0x01C66000)
#define DAVINCI_SPI_BASE (0x01C66800)
#define DAVINCI_GPIO_BASE (0x01C67000)
#define DAVINCI_UHPI_BASE (0x01C67800)
#define DAVINCI_VPSS_REGS_BASE (0x01C70000)
#define DAVINCI_EMAC_CNTRL_REGS_BASE (0x01C80000)
#define DAVINCI_EMAC_WRAPPER_CNTRL_REGS_BASE (0x01C81000)
#define DAVINCI_EMAC_WRAPPER_RAM_BASE (0x01C82000)
#define DAVINCI_MDIO_CNTRL_REGS_BASE (0x01C84000)
#define DAVINCI_IMCOP_BASE (0x01CC0000)
#define DAVINCI_ASYNC_EMIF_CNTRL_BASE (0x01E00000)
#define DAVINCI_VLYNQ_BASE (0x01E01000)
#define DAVINCI_MCBSP_BASE (0x01E02000)
#define DAVINCI_MMC_SD_BASE (0x01E10000)
#define DAVINCI_MS_BASE (0x01E20000)
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE (0x02000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE (0x04000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE (0x06000000)
#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE (0x08000000)
#define DAVINCI_VLYNQ_REMOTE_BASE (0x0C000000)
#define DAVINCI_SYSTEM_MODULE_BASE 0x01C40000
/* System control register offsets */
#define DM64XX_VDD3P3V_PWDN 0x48
#endif /* __ASM_ARCH_HARDWARE_H */

20
arch/arm/mach-davinci/include/mach/io.h
View File

@ -40,22 +40,12 @@
#else
#define IOMEM(x) ((void __force __iomem *)(x))
/*
* Functions to access the DaVinci IO region
*
* NOTE: - Use davinci_read/write[bwl] for physical register addresses
* - Use __raw_read/write[bwl]() for virtual register addresses
* - Use IO_ADDRESS(phys_addr) to convert registers to virtual addresses
* - DO NOT use hardcoded virtual addresses to allow changing the
* IO address space again if needed
*/
#define davinci_readb(a) __raw_readb(IO_ADDRESS(a))
#define davinci_readw(a) __raw_readw(IO_ADDRESS(a))
#define davinci_readl(a) __raw_readl(IO_ADDRESS(a))
#define __arch_ioremap(p, s, t) davinci_ioremap(p, s, t)
#define __arch_iounmap(v) davinci_iounmap(v)
#define davinci_writeb(v, a) __raw_writeb(v, IO_ADDRESS(a))
#define davinci_writew(v, a) __raw_writew(v, IO_ADDRESS(a))
#define davinci_writel(v, a) __raw_writel(v, IO_ADDRESS(a))
void __iomem *davinci_ioremap(unsigned long phys, size_t size,
unsigned int type);
void davinci_iounmap(volatile void __iomem *addr);
#endif /* __ASSEMBLER__ */
#endif /* __ASM_ARCH_IO_H */

103
arch/arm/mach-davinci/include/mach/irqs.h
View File

@ -96,10 +96,111 @@
#define IRQ_EMUINT 63
#define DAVINCI_N_AINTC_IRQ 64
#define DAVINCI_N_GPIO 71
#define DAVINCI_N_GPIO 104
#define NR_IRQS (DAVINCI_N_AINTC_IRQ + DAVINCI_N_GPIO)
#define ARCH_TIMER_IRQ IRQ_TINT1_TINT34
/* DaVinci DM6467-specific Interrupts */
#define IRQ_DM646X_VP_VERTINT0 0
#define IRQ_DM646X_VP_VERTINT1 1
#define IRQ_DM646X_VP_VERTINT2 2
#define IRQ_DM646X_VP_VERTINT3 3
#define IRQ_DM646X_VP_ERRINT 4
#define IRQ_DM646X_RESERVED_1 5
#define IRQ_DM646X_RESERVED_2 6
#define IRQ_DM646X_WDINT 7
#define IRQ_DM646X_CRGENINT0 8
#define IRQ_DM646X_CRGENINT1 9
#define IRQ_DM646X_TSIFINT0 10
#define IRQ_DM646X_TSIFINT1 11
#define IRQ_DM646X_VDCEINT 12
#define IRQ_DM646X_USBINT 13
#define IRQ_DM646X_USBDMAINT 14
#define IRQ_DM646X_PCIINT 15
#define IRQ_DM646X_TCERRINT2 20
#define IRQ_DM646X_TCERRINT3 21
#define IRQ_DM646X_IDE 22
#define IRQ_DM646X_HPIINT 23
#define IRQ_DM646X_EMACRXTHINT 24
#define IRQ_DM646X_EMACRXINT 25
#define IRQ_DM646X_EMACTXINT 26
#define IRQ_DM646X_EMACMISCINT 27
#define IRQ_DM646X_MCASP0TXINT 28
#define IRQ_DM646X_MCASP0RXINT 29
#define IRQ_DM646X_RESERVED_3 31
#define IRQ_DM646X_MCASP1TXINT 32
#define IRQ_DM646X_VLQINT 38
#define IRQ_DM646X_UARTINT2 42
#define IRQ_DM646X_SPINT0 43
#define IRQ_DM646X_SPINT1 44
#define IRQ_DM646X_DSP2ARMINT 45
#define IRQ_DM646X_RESERVED_4 46
#define IRQ_DM646X_PSCINT 47
#define IRQ_DM646X_GPIO0 48
#define IRQ_DM646X_GPIO1 49
#define IRQ_DM646X_GPIO2 50
#define IRQ_DM646X_GPIO3 51
#define IRQ_DM646X_GPIO4 52
#define IRQ_DM646X_GPIO5 53
#define IRQ_DM646X_GPIO6 54
#define IRQ_DM646X_GPIO7 55
#define IRQ_DM646X_GPIOBNK0 56
#define IRQ_DM646X_GPIOBNK1 57
#define IRQ_DM646X_GPIOBNK2 58
#define IRQ_DM646X_DDRINT 59
#define IRQ_DM646X_AEMIFINT 60
/* DaVinci DM355-specific Interrupts */
#define IRQ_DM355_CCDC_VDINT0 0
#define IRQ_DM355_CCDC_VDINT1 1
#define IRQ_DM355_CCDC_VDINT2 2
#define IRQ_DM355_IPIPE_HST 3
#define IRQ_DM355_H3AINT 4
#define IRQ_DM355_IPIPE_SDR 5
#define IRQ_DM355_IPIPEIFINT 6
#define IRQ_DM355_OSDINT 7
#define IRQ_DM355_VENCINT 8
#define IRQ_DM355_IMCOPINT 11
#define IRQ_DM355_RTOINT 13
#define IRQ_DM355_TINT4 13
#define IRQ_DM355_TINT2_TINT12 13
#define IRQ_DM355_UARTINT2 14
#define IRQ_DM355_TINT5 14
#define IRQ_DM355_TINT2_TINT34 14
#define IRQ_DM355_TINT6 15
#define IRQ_DM355_TINT3_TINT12 15
#define IRQ_DM355_SPINT1_0 17
#define IRQ_DM355_SPINT1_1 18
#define IRQ_DM355_SPINT2_0 19
#define IRQ_DM355_SPINT2_1 21
#define IRQ_DM355_TINT7 22
#define IRQ_DM355_TINT3_TINT34 22
#define IRQ_DM355_SDIOINT0 23
#define IRQ_DM355_MMCINT0 26
#define IRQ_DM355_MSINT 26
#define IRQ_DM355_MMCINT1 27
#define IRQ_DM355_PWMINT3 28
#define IRQ_DM355_SDIOINT1 31
#define IRQ_DM355_SPINT0_0 42
#define IRQ_DM355_SPINT0_1 43
#define IRQ_DM355_GPIO0 44
#define IRQ_DM355_GPIO1 45
#define IRQ_DM355_GPIO2 46
#define IRQ_DM355_GPIO3 47
#define IRQ_DM355_GPIO4 48
#define IRQ_DM355_GPIO5 49
#define IRQ_DM355_GPIO6 50
#define IRQ_DM355_GPIO7 51
#define IRQ_DM355_GPIO8 52
#define IRQ_DM355_GPIO9 53
#define IRQ_DM355_GPIOBNK0 54
#define IRQ_DM355_GPIOBNK1 55
#define IRQ_DM355_GPIOBNK2 56
#define IRQ_DM355_GPIOBNK3 57
#define IRQ_DM355_GPIOBNK4 58
#define IRQ_DM355_GPIOBNK5 59
#define IRQ_DM355_GPIOBNK6 60
#endif /* __ASM_ARCH_IRQS_H */

212
arch/arm/mach-davinci/include/mach/mux.h
View File

@ -1,55 +1,183 @@
/*
* DaVinci pin multiplexing defines
* Table of the DAVINCI register configurations for the PINMUX combinations
*
* Author: Vladimir Barinov, MontaVista Software, Inc. <source@mvista.com>
*
* Based on linux/include/asm-arm/arch-omap/mux.h:
* Copyright (C) 2003 - 2005 Nokia Corporation
*
* Written by Tony Lindgren
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*
* Copyright (C) 2008 Texas Instruments.
*/
#ifndef __ASM_ARCH_MUX_H
#define __ASM_ARCH_MUX_H
#define DAVINCI_MUX_AEAW0 0
#define DAVINCI_MUX_AEAW1 1
#define DAVINCI_MUX_AEAW2 2
#define DAVINCI_MUX_AEAW3 3
#define DAVINCI_MUX_AEAW4 4
#define DAVINCI_MUX_AECS4 10
#define DAVINCI_MUX_AECS5 11
#define DAVINCI_MUX_VLYNQWD0 12
#define DAVINCI_MUX_VLYNQWD1 13
#define DAVINCI_MUX_VLSCREN 14
#define DAVINCI_MUX_VLYNQEN 15
#define DAVINCI_MUX_HDIREN 16
#define DAVINCI_MUX_ATAEN 17
#define DAVINCI_MUX_RGB666 22
#define DAVINCI_MUX_RGB888 23
#define DAVINCI_MUX_LOEEN 24
#define DAVINCI_MUX_LFLDEN 25
#define DAVINCI_MUX_CWEN 26
#define DAVINCI_MUX_CFLDEN 27
#define DAVINCI_MUX_HPIEN 29
#define DAVINCI_MUX_1394EN 30
#define DAVINCI_MUX_EMACEN 31
#ifndef __INC_MACH_MUX_H
#define __INC_MACH_MUX_H
#define DAVINCI_MUX_LEVEL2 32
#define DAVINCI_MUX_UART0 (DAVINCI_MUX_LEVEL2 + 0)
#define DAVINCI_MUX_UART1 (DAVINCI_MUX_LEVEL2 + 1)
#define DAVINCI_MUX_UART2 (DAVINCI_MUX_LEVEL2 + 2)
#define DAVINCI_MUX_U2FLO (DAVINCI_MUX_LEVEL2 + 3)
#define DAVINCI_MUX_PWM0 (DAVINCI_MUX_LEVEL2 + 4)
#define DAVINCI_MUX_PWM1 (DAVINCI_MUX_LEVEL2 + 5)
#define DAVINCI_MUX_PWM2 (DAVINCI_MUX_LEVEL2 + 6)
#define DAVINCI_MUX_I2C (DAVINCI_MUX_LEVEL2 + 7)
#define DAVINCI_MUX_SPI (DAVINCI_MUX_LEVEL2 + 8)
#define DAVINCI_MUX_MSTK (DAVINCI_MUX_LEVEL2 + 9)
#define DAVINCI_MUX_ASP (DAVINCI_MUX_LEVEL2 + 10)
#define DAVINCI_MUX_CLK0 (DAVINCI_MUX_LEVEL2 + 16)
#define DAVINCI_MUX_CLK1 (DAVINCI_MUX_LEVEL2 + 17)
#define DAVINCI_MUX_TIMIN (DAVINCI_MUX_LEVEL2 + 18)
/* System module registers */
#define PINMUX0 0x00
#define PINMUX1 0x04
/* dm355 only */
#define PINMUX2 0x08
#define PINMUX3 0x0c
#define PINMUX4 0x10
#define INTMUX 0x18
#define EVTMUX 0x1c
extern void davinci_mux_peripheral(unsigned int mux, unsigned int enable);
struct mux_config {
const char *name;
const char *mux_reg_name;
const unsigned char mux_reg;
const unsigned char mask_offset;
const unsigned char mask;
const unsigned char mode;
bool debug;
};
#endif /* __ASM_ARCH_MUX_H */
enum davinci_dm644x_index {
/* ATA and HDDIR functions */
DM644X_HDIREN,
DM644X_ATAEN,
DM644X_ATAEN_DISABLE,
/* HPI functions */
DM644X_HPIEN_DISABLE,
/* AEAW functions */
DM644X_AEAW,
/* Memory Stick */
DM644X_MSTK,
/* I2C */
DM644X_I2C,
/* ASP function */
DM644X_MCBSP,
/* UART1 */
DM644X_UART1,
/* UART2 */
DM644X_UART2,
/* PWM0 */
DM644X_PWM0,
/* PWM1 */
DM644X_PWM1,
/* PWM2 */
DM644X_PWM2,
/* VLYNQ function */
DM644X_VLYNQEN,
DM644X_VLSCREN,
DM644X_VLYNQWD,
/* EMAC and MDIO function */
DM644X_EMACEN,
/* GPIO3V[0:16] pins */
DM644X_GPIO3V,
/* GPIO pins */
DM644X_GPIO0,
DM644X_GPIO3,
DM644X_GPIO43_44,
DM644X_GPIO46_47,
/* VPBE */
DM644X_RGB666,
/* LCD */
DM644X_LOEEN,
DM644X_LFLDEN,
};
enum davinci_dm646x_index {
/* ATA function */
DM646X_ATAEN,
/* AUDIO Clock */
DM646X_AUDCK1,
DM646X_AUDCK0,
/* CRGEN Control */
DM646X_CRGMUX,
/* VPIF Control */
DM646X_STSOMUX_DISABLE,
DM646X_STSIMUX_DISABLE,
DM646X_PTSOMUX_DISABLE,
DM646X_PTSIMUX_DISABLE,
/* TSIF Control */
DM646X_STSOMUX,
DM646X_STSIMUX,
DM646X_PTSOMUX_PARALLEL,
DM646X_PTSIMUX_PARALLEL,
DM646X_PTSOMUX_SERIAL,
DM646X_PTSIMUX_SERIAL,
};
enum davinci_dm355_index {
/* MMC/SD 0 */
DM355_MMCSD0,
/* MMC/SD 1 */
DM355_SD1_CLK,
DM355_SD1_CMD,
DM355_SD1_DATA3,
DM355_SD1_DATA2,
DM355_SD1_DATA1,
DM355_SD1_DATA0,
/* I2C */
DM355_I2C_SDA,
DM355_I2C_SCL,
/* ASP0 function */
DM355_MCBSP0_BDX,
DM355_MCBSP0_X,
DM355_MCBSP0_BFSX,
DM355_MCBSP0_BDR,
DM355_MCBSP0_R,
DM355_MCBSP0_BFSR,
/* SPI0 */
DM355_SPI0_SDI,
DM355_SPI0_SDENA0,
DM355_SPI0_SDENA1,
/* IRQ muxing */
DM355_INT_EDMA_CC,
DM355_INT_EDMA_TC0_ERR,
DM355_INT_EDMA_TC1_ERR,
/* EDMA event muxing */
DM355_EVT8_ASP1_TX,
DM355_EVT9_ASP1_RX,
DM355_EVT26_MMC0_RX,
};
#ifdef CONFIG_DAVINCI_MUX
/* setup pin muxing */
extern void davinci_mux_init(void);
extern int davinci_mux_register(const struct mux_config *pins,
unsigned long size);
extern int davinci_cfg_reg(unsigned long reg_cfg);
#else
/* boot loader does it all (no warnings from CONFIG_DAVINCI_MUX_WARNINGS) */
static inline void davinci_mux_init(void) {}
static inline int davinci_mux_register(const struct mux_config *pins,
unsigned long size) { return 0; }
static inline int davinci_cfg_reg(unsigned long reg_cfg) { return 0; }
#endif
#endif /* __INC_MACH_MUX_H */

53
arch/arm/mach-davinci/include/mach/psc.h
View File

@ -38,8 +38,6 @@
#define DAVINCI_LPSC_TPTC1 4
#define DAVINCI_LPSC_EMAC 5
#define DAVINCI_LPSC_EMAC_WRAPPER 6
#define DAVINCI_LPSC_MDIO 7
#define DAVINCI_LPSC_IEEE1394 8
#define DAVINCI_LPSC_USB 9
#define DAVINCI_LPSC_ATA 10
#define DAVINCI_LPSC_VLYNQ 11
@ -47,7 +45,6 @@
#define DAVINCI_LPSC_DDR_EMIF 13
#define DAVINCI_LPSC_AEMIF 14
#define DAVINCI_LPSC_MMC_SD 15
#define DAVINCI_LPSC_MEMSTICK 16
#define DAVINCI_LPSC_McBSP 17
#define DAVINCI_LPSC_I2C 18
#define DAVINCI_LPSC_UART0 19
@ -73,4 +70,54 @@
#define DAVINCI_LPSC_GEM 39
#define DAVINCI_LPSC_IMCOP 40
#define DM355_LPSC_TIMER3 5
#define DM355_LPSC_SPI1 6
#define DM355_LPSC_MMC_SD1 7
#define DM355_LPSC_McBSP1 8
#define DM355_LPSC_PWM3 10
#define DM355_LPSC_SPI2 11
#define DM355_LPSC_RTO 12
#define DM355_LPSC_VPSS_DAC 41
/*
* LPSC Assignments
*/
#define DM646X_LPSC_ARM 0
#define DM646X_LPSC_C64X_CPU 1
#define DM646X_LPSC_HDVICP0 2
#define DM646X_LPSC_HDVICP1 3
#define DM646X_LPSC_TPCC 4
#define DM646X_LPSC_TPTC0 5
#define DM646X_LPSC_TPTC1 6
#define DM646X_LPSC_TPTC2 7
#define DM646X_LPSC_TPTC3 8
#define DM646X_LPSC_PCI 13
#define DM646X_LPSC_EMAC 14
#define DM646X_LPSC_VDCE 15
#define DM646X_LPSC_VPSSMSTR 16
#define DM646X_LPSC_VPSSSLV 17
#define DM646X_LPSC_TSIF0 18
#define DM646X_LPSC_TSIF1 19
#define DM646X_LPSC_DDR_EMIF 20
#define DM646X_LPSC_AEMIF 21
#define DM646X_LPSC_McASP0 22
#define DM646X_LPSC_McASP1 23
#define DM646X_LPSC_CRGEN0 24
#define DM646X_LPSC_CRGEN1 25
#define DM646X_LPSC_UART0 26
#define DM646X_LPSC_UART1 27
#define DM646X_LPSC_UART2 28
#define DM646X_LPSC_PWM0 29
#define DM646X_LPSC_PWM1 30
#define DM646X_LPSC_I2C 31
#define DM646X_LPSC_SPI 32
#define DM646X_LPSC_GPIO 33
#define DM646X_LPSC_TIMER0 34
#define DM646X_LPSC_TIMER1 35
#define DM646X_LPSC_ARM_INTC 45
extern int davinci_psc_is_clk_active(unsigned int id);
extern void davinci_psc_config(unsigned int domain, unsigned int id,
char enable);
#endif /* __ASM_ARCH_PSC_H */

21
arch/arm/mach-davinci/include/mach/serial.h
View File

@ -13,8 +13,23 @@
#include <mach/io.h>
#define DAVINCI_UART0_BASE (IO_PHYS + 0x20000)
#define DAVINCI_UART1_BASE (IO_PHYS + 0x20400)
#define DAVINCI_UART2_BASE (IO_PHYS + 0x20800)
#define DAVINCI_MAX_NR_UARTS 3
#define DAVINCI_UART0_BASE (IO_PHYS + 0x20000)
#define DAVINCI_UART1_BASE (IO_PHYS + 0x20400)
#define DAVINCI_UART2_BASE (IO_PHYS + 0x20800)
#define DM355_UART2_BASE (IO_PHYS + 0x206000)
/* DaVinci UART register offsets */
#define UART_DAVINCI_PWREMU 0x0c
#define UART_DM646X_SCR 0x10
#define UART_DM646X_SCR_TX_WATERMARK 0x08
struct davinci_uart_config {
/* Bit field of UARTs present; bit 0 --> UART1 */
unsigned int enabled_uarts;
};
extern void davinci_serial_init(struct davinci_uart_config *);
#endif /* __ASM_ARCH_SERIAL_H */

23
arch/arm/mach-davinci/io.c
View File

@ -51,7 +51,26 @@ void __init davinci_map_common_io(void)
davinci_check_revision();
}
void __init davinci_init_common_hw(void)
#define BETWEEN(p, st, sz) ((p) >= (st) && (p) < ((st) + (sz)))
#define XLATE(p, pst, vst) ((void __iomem *)((p) - (pst) + (vst)))
/*
* Intercept ioremap() requests for addresses in our fixed mapping regions.
*/
void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type)
{
davinci_clk_init();
if (BETWEEN(p, IO_PHYS, IO_SIZE))
return XLATE(p, IO_PHYS, IO_VIRT);
return __arm_ioremap(p, size, type);
}
EXPORT_SYMBOL(davinci_ioremap);
void davinci_iounmap(volatile void __iomem *addr)
{
unsigned long virt = (unsigned long)addr;
if (virt >= VMALLOC_START && virt < VMALLOC_END)
__iounmap(addr);
}
EXPORT_SYMBOL(davinci_iounmap);

156
arch/arm/mach-davinci/irq.c
View File

@ -25,6 +25,7 @@
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/cputype.h>
#include <asm/mach/irq.h>
#define IRQ_BIT(irq) ((irq) & 0x1f)
@ -40,14 +41,18 @@
#define IRQ_INTPRI0_REG_OFFSET 0x0030
#define IRQ_INTPRI7_REG_OFFSET 0x004C
const u8 *davinci_def_priorities;
#define INTC_BASE IO_ADDRESS(DAVINCI_ARM_INTC_BASE)
static inline unsigned int davinci_irq_readl(int offset)
{
return davinci_readl(DAVINCI_ARM_INTC_BASE + offset);
return __raw_readl(INTC_BASE + offset);
}
static inline void davinci_irq_writel(unsigned long value, int offset)
{
davinci_writel(value, DAVINCI_ARM_INTC_BASE + offset);
__raw_writel(value, INTC_BASE + offset);
}
/* Disable interrupt */
@ -108,9 +113,8 @@ static struct irq_chip davinci_irq_chip_0 = {
.unmask = davinci_unmask_irq,
};
/* FIQ are pri 0-1; otherwise 2-7, with 7 lowest priority */
static const u8 default_priorities[DAVINCI_N_AINTC_IRQ] __initdata = {
static const u8 dm644x_default_priorities[DAVINCI_N_AINTC_IRQ] __initdata = {
[IRQ_VDINT0] = 2,
[IRQ_VDINT1] = 6,
[IRQ_VDINT2] = 6,
@ -177,11 +181,149 @@ static const u8 default_priorities[DAVINCI_N_AINTC_IRQ] __initdata = {
[IRQ_EMUINT] = 7,
};
static const u8 dm646x_default_priorities[DAVINCI_N_AINTC_IRQ] = {
[IRQ_DM646X_VP_VERTINT0] = 7,
[IRQ_DM646X_VP_VERTINT1] = 7,
[IRQ_DM646X_VP_VERTINT2] = 7,
[IRQ_DM646X_VP_VERTINT3] = 7,
[IRQ_DM646X_VP_ERRINT] = 7,
[IRQ_DM646X_RESERVED_1] = 7,
[IRQ_DM646X_RESERVED_2] = 7,
[IRQ_DM646X_WDINT] = 7,
[IRQ_DM646X_CRGENINT0] = 7,
[IRQ_DM646X_CRGENINT1] = 7,
[IRQ_DM646X_TSIFINT0] = 7,
[IRQ_DM646X_TSIFINT1] = 7,
[IRQ_DM646X_VDCEINT] = 7,
[IRQ_DM646X_USBINT] = 7,
[IRQ_DM646X_USBDMAINT] = 7,
[IRQ_DM646X_PCIINT] = 7,
[IRQ_CCINT0] = 7, /* dma */
[IRQ_CCERRINT] = 7, /* dma */
[IRQ_TCERRINT0] = 7, /* dma */
[IRQ_TCERRINT] = 7, /* dma */
[IRQ_DM646X_TCERRINT2] = 7,
[IRQ_DM646X_TCERRINT3] = 7,
[IRQ_DM646X_IDE] = 7,
[IRQ_DM646X_HPIINT] = 7,
[IRQ_DM646X_EMACRXTHINT] = 7,
[IRQ_DM646X_EMACRXINT] = 7,
[IRQ_DM646X_EMACTXINT] = 7,
[IRQ_DM646X_EMACMISCINT] = 7,
[IRQ_DM646X_MCASP0TXINT] = 7,
[IRQ_DM646X_MCASP0RXINT] = 7,
[IRQ_AEMIFINT] = 7,
[IRQ_DM646X_RESERVED_3] = 7,
[IRQ_DM646X_MCASP1TXINT] = 7, /* clockevent */
[IRQ_TINT0_TINT34] = 7, /* clocksource */
[IRQ_TINT1_TINT12] = 7, /* DSP timer */
[IRQ_TINT1_TINT34] = 7, /* system tick */
[IRQ_PWMINT0] = 7,
[IRQ_PWMINT1] = 7,
[IRQ_DM646X_VLQINT] = 7,
[IRQ_I2C] = 7,
[IRQ_UARTINT0] = 7,
[IRQ_UARTINT1] = 7,
[IRQ_DM646X_UARTINT2] = 7,
[IRQ_DM646X_SPINT0] = 7,
[IRQ_DM646X_SPINT1] = 7,
[IRQ_DM646X_DSP2ARMINT] = 7,
[IRQ_DM646X_RESERVED_4] = 7,
[IRQ_DM646X_PSCINT] = 7,
[IRQ_DM646X_GPIO0] = 7,
[IRQ_DM646X_GPIO1] = 7,
[IRQ_DM646X_GPIO2] = 7,
[IRQ_DM646X_GPIO3] = 7,
[IRQ_DM646X_GPIO4] = 7,
[IRQ_DM646X_GPIO5] = 7,
[IRQ_DM646X_GPIO6] = 7,
[IRQ_DM646X_GPIO7] = 7,
[IRQ_DM646X_GPIOBNK0] = 7,
[IRQ_DM646X_GPIOBNK1] = 7,
[IRQ_DM646X_GPIOBNK2] = 7,
[IRQ_DM646X_DDRINT] = 7,
[IRQ_DM646X_AEMIFINT] = 7,
[IRQ_COMMTX] = 7,
[IRQ_COMMRX] = 7,
[IRQ_EMUINT] = 7,
};
static const u8 dm355_default_priorities[DAVINCI_N_AINTC_IRQ] = {
[IRQ_DM355_CCDC_VDINT0] = 2,
[IRQ_DM355_CCDC_VDINT1] = 6,
[IRQ_DM355_CCDC_VDINT2] = 6,
[IRQ_DM355_IPIPE_HST] = 6,
[IRQ_DM355_H3AINT] = 6,
[IRQ_DM355_IPIPE_SDR] = 6,
[IRQ_DM355_IPIPEIFINT] = 6,
[IRQ_DM355_OSDINT] = 7,
[IRQ_DM355_VENCINT] = 6,
[IRQ_ASQINT] = 6,
[IRQ_IMXINT] = 6,
[IRQ_USBINT] = 4,
[IRQ_DM355_RTOINT] = 4,
[IRQ_DM355_UARTINT2] = 7,
[IRQ_DM355_TINT6] = 7,
[IRQ_CCINT0] = 5, /* dma */
[IRQ_CCERRINT] = 5, /* dma */
[IRQ_TCERRINT0] = 5, /* dma */
[IRQ_TCERRINT] = 5, /* dma */
[IRQ_DM355_SPINT2_1] = 7,
[IRQ_DM355_TINT7] = 4,
[IRQ_DM355_SDIOINT0] = 7,
[IRQ_MBXINT] = 7,
[IRQ_MBRINT] = 7,
[IRQ_MMCINT] = 7,
[IRQ_DM355_MMCINT1] = 7,
[IRQ_DM355_PWMINT3] = 7,
[IRQ_DDRINT] = 7,
[IRQ_AEMIFINT] = 7,
[IRQ_DM355_SDIOINT1] = 4,
[IRQ_TINT0_TINT12] = 2, /* clockevent */
[IRQ_TINT0_TINT34] = 2, /* clocksource */
[IRQ_TINT1_TINT12] = 7, /* DSP timer */
[IRQ_TINT1_TINT34] = 7, /* system tick */
[IRQ_PWMINT0] = 7,
[IRQ_PWMINT1] = 7,
[IRQ_PWMINT2] = 7,
[IRQ_I2C] = 3,
[IRQ_UARTINT0] = 3,
[IRQ_UARTINT1] = 3,
[IRQ_DM355_SPINT0_0] = 3,
[IRQ_DM355_SPINT0_1] = 3,
[IRQ_DM355_GPIO0] = 3,
[IRQ_DM355_GPIO1] = 7,
[IRQ_DM355_GPIO2] = 4,
[IRQ_DM355_GPIO3] = 4,
[IRQ_DM355_GPIO4] = 7,
[IRQ_DM355_GPIO5] = 7,
[IRQ_DM355_GPIO6] = 7,
[IRQ_DM355_GPIO7] = 7,
[IRQ_DM355_GPIO8] = 7,
[IRQ_DM355_GPIO9] = 7,
[IRQ_DM355_GPIOBNK0] = 7,
[IRQ_DM355_GPIOBNK1] = 7,
[IRQ_DM355_GPIOBNK2] = 7,
[IRQ_DM355_GPIOBNK3] = 7,
[IRQ_DM355_GPIOBNK4] = 7,
[IRQ_DM355_GPIOBNK5] = 7,
[IRQ_DM355_GPIOBNK6] = 7,
[IRQ_COMMTX] = 7,
[IRQ_COMMRX] = 7,
[IRQ_EMUINT] = 7,
};
/* ARM Interrupt Controller Initialization */
void __init davinci_irq_init(void)
{
unsigned i;
const u8 *priority = default_priorities;
if (cpu_is_davinci_dm644x())
davinci_def_priorities = dm644x_default_priorities;
else if (cpu_is_davinci_dm646x())
davinci_def_priorities = dm646x_default_priorities;
else if (cpu_is_davinci_dm355())
davinci_def_priorities = dm355_default_priorities;
/* Clear all interrupt requests */
davinci_irq_writel(~0x0, FIQ_REG0_OFFSET);
@ -209,8 +351,8 @@ void __init davinci_irq_init(void)
unsigned j;
u32 pri;
for (j = 0, pri = 0; j < 32; j += 4, priority++)
pri |= (*priority & 0x07) << j;
for (j = 0, pri = 0; j < 32; j += 4, davinci_def_priorities++)
pri |= (*davinci_def_priorities & 0x07) << j;
davinci_irq_writel(pri, i);
}

102
arch/arm/mach-davinci/mux.c
View File

@ -1,41 +1,103 @@
/*
* DaVinci pin multiplexing configurations
* Utility to set the DAVINCI MUX register from a table in mux.h
*
* Author: Vladimir Barinov, MontaVista Software, Inc. <source@mvista.com>
*
* Based on linux/arch/arm/plat-omap/mux.c:
* Copyright (C) 2003 - 2005 Nokia Corporation
*
* Written by Tony Lindgren
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*
* Copyright (C) 2008 Texas Instruments.
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <mach/hardware.h>
#include <mach/mux.h>
/* System control register offsets */
#define PINMUX0 0x00
#define PINMUX1 0x04
static const struct mux_config *mux_table;
static unsigned long pin_table_sz;
static DEFINE_SPINLOCK(mux_lock);
void davinci_mux_peripheral(unsigned int mux, unsigned int enable)
int __init davinci_mux_register(const struct mux_config *pins,
unsigned long size)
{
u32 pinmux, muxreg = PINMUX0;
mux_table = pins;
pin_table_sz = size;
if (mux >= DAVINCI_MUX_LEVEL2) {
muxreg = PINMUX1;
mux -= DAVINCI_MUX_LEVEL2;
return 0;
}
/*
* Sets the DAVINCI MUX register based on the table
*/
int __init_or_module davinci_cfg_reg(const unsigned long index)
{
static DEFINE_SPINLOCK(mux_spin_lock);
void __iomem *base = IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
unsigned long flags;
const struct mux_config *cfg;
unsigned int reg_orig = 0, reg = 0;
unsigned int mask, warn = 0;
if (!mux_table)
BUG();
if (index >= pin_table_sz) {
printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n",
index, pin_table_sz);
dump_stack();
return -ENODEV;
}
spin_lock(&mux_lock);
pinmux = davinci_readl(DAVINCI_SYSTEM_MODULE_BASE + muxreg);
if (enable)
pinmux |= (1 << mux);
else
pinmux &= ~(1 << mux);
davinci_writel(pinmux, DAVINCI_SYSTEM_MODULE_BASE + muxreg);
spin_unlock(&mux_lock);
cfg = &mux_table[index];
if (cfg->name == NULL) {
printk(KERN_ERR "No entry for the specified index\n");
return -ENODEV;
}
/* Update the mux register in question */
if (cfg->mask) {
unsigned tmp1, tmp2;
spin_lock_irqsave(&mux_spin_lock, flags);
reg_orig = __raw_readl(base + cfg->mux_reg);
mask = (cfg->mask << cfg->mask_offset);
tmp1 = reg_orig & mask;
reg = reg_orig & ~mask;
tmp2 = (cfg->mode << cfg->mask_offset);
reg |= tmp2;
if (tmp1 != tmp2)
warn = 1;
__raw_writel(reg, base + cfg->mux_reg);
spin_unlock_irqrestore(&mux_spin_lock, flags);
}
if (warn) {
#ifdef CONFIG_DAVINCI_MUX_WARNINGS
printk(KERN_WARNING "MUX: initialized %s\n", cfg->name);
#endif
}
#ifdef CONFIG_DAVINCI_MUX_DEBUG
if (cfg->debug || warn) {
printk(KERN_WARNING "MUX: Setting register %s\n", cfg->name);
printk(KERN_WARNING " %s (0x%08x) = 0x%08x -> 0x%08x\n",
cfg->mux_reg_name, cfg->mux_reg, reg_orig, reg);
}
#endif
return 0;
}
EXPORT_SYMBOL(davinci_cfg_reg);

51
arch/arm/mach-davinci/mux.h Normal file
View File

@ -0,0 +1,51 @@
/*
* Pin-multiplex helper macros for TI DaVinci family devices
*
* Author: Vladimir Barinov, MontaVista Software, Inc. <source@mvista.com>
*
* 2007 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*
* Copyright (C) 2008 Texas Instruments.
*/
#ifndef _MACH_DAVINCI_MUX_H_
#define _MACH_DAVINCI_MUX_H_
#include <mach/mux.h>
#define MUX_CFG(soc, desc, muxreg, mode_offset, mode_mask, mux_mode, dbg)\
[soc##_##desc] = { \
.name = #desc, \
.debug = dbg, \
.mux_reg_name = "PINMUX"#muxreg, \
.mux_reg = PINMUX##muxreg, \
.mask_offset = mode_offset, \
.mask = mode_mask, \
.mode = mux_mode, \
},
#define INT_CFG(soc, desc, mode_offset, mode_mask, mux_mode, dbg) \
[soc##_##desc] = { \
.name = #desc, \
.debug = dbg, \
.mux_reg_name = "INTMUX", \
.mux_reg = INTMUX, \
.mask_offset = mode_offset, \
.mask = mode_mask, \
.mode = mux_mode, \
},
#define EVT_CFG(soc, desc, mode_offset, mode_mask, mux_mode, dbg) \
[soc##_##desc] = { \
.name = #desc, \
.debug = dbg, \
.mux_reg_name = "EVTMUX", \
.mux_reg = EVTMUX, \
.mask_offset = mode_offset, \
.mask = mode_mask, \
.mode = mux_mode, \
},
#endif /* _MACH_DAVINCI_MUX_H */

98
arch/arm/mach-davinci/psc.c
View File

@ -23,10 +23,13 @@
#include <linux/init.h>
#include <linux/io.h>
#include <mach/cputype.h>
#include <mach/hardware.h>
#include <mach/psc.h>
#include <mach/mux.h>
#define DAVINCI_PWR_SLEEP_CNTRL_BASE 0x01C41000
/* PSC register offsets */
#define EPCPR 0x070
#define PTCMD 0x120
@ -36,102 +39,61 @@
#define MDSTAT 0x800
#define MDCTL 0xA00
/* System control register offsets */
#define VDD3P3V_PWDN 0x48
#define MDSTAT_STATE_MASK 0x1f
static void davinci_psc_mux(unsigned int id)
/* Return nonzero iff the domain's clock is active */
int __init davinci_psc_is_clk_active(unsigned int id)
{
switch (id) {
case DAVINCI_LPSC_ATA:
davinci_mux_peripheral(DAVINCI_MUX_HDIREN, 1);
davinci_mux_peripheral(DAVINCI_MUX_ATAEN, 1);
break;
case DAVINCI_LPSC_MMC_SD:
/* VDD power manupulations are done in U-Boot for CPMAC
* so applies to MMC as well
*/
/*Set up the pull regiter for MMC */
davinci_writel(0, DAVINCI_SYSTEM_MODULE_BASE + VDD3P3V_PWDN);
davinci_mux_peripheral(DAVINCI_MUX_MSTK, 0);
break;
case DAVINCI_LPSC_I2C:
davinci_mux_peripheral(DAVINCI_MUX_I2C, 1);
break;
case DAVINCI_LPSC_McBSP:
davinci_mux_peripheral(DAVINCI_MUX_ASP, 1);
break;
default:
break;
}
void __iomem *psc_base = IO_ADDRESS(DAVINCI_PWR_SLEEP_CNTRL_BASE);
u32 mdstat = __raw_readl(psc_base + MDSTAT + 4 * id);
/* if clocked, state can be "Enable" or "SyncReset" */
return mdstat & BIT(12);
}
/* Enable or disable a PSC domain */
void davinci_psc_config(unsigned int domain, unsigned int id, char enable)
{
u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl, mdstat_mask;
u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl;
void __iomem *psc_base = IO_ADDRESS(DAVINCI_PWR_SLEEP_CNTRL_BASE);
u32 next_state = enable ? 0x3 : 0x2; /* 0x3 enables, 0x2 disables */
mdctl = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE + MDCTL + 4 * id);
if (enable)
mdctl |= 0x00000003; /* Enable Module */
else
mdctl &= 0xFFFFFFF2; /* Disable Module */
davinci_writel(mdctl, DAVINCI_PWR_SLEEP_CNTRL_BASE + MDCTL + 4 * id);
mdctl = __raw_readl(psc_base + MDCTL + 4 * id);
mdctl &= ~MDSTAT_STATE_MASK;
mdctl |= next_state;
__raw_writel(mdctl, psc_base + MDCTL + 4 * id);
pdstat = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE + PDSTAT);
pdstat = __raw_readl(psc_base + PDSTAT);
if ((pdstat & 0x00000001) == 0) {
pdctl1 = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE + PDCTL1);
pdctl1 = __raw_readl(psc_base + PDCTL1);
pdctl1 |= 0x1;
davinci_writel(pdctl1, DAVINCI_PWR_SLEEP_CNTRL_BASE + PDCTL1);
__raw_writel(pdctl1, psc_base + PDCTL1);
ptcmd = 1 << domain;
davinci_writel(ptcmd, DAVINCI_PWR_SLEEP_CNTRL_BASE + PTCMD);
__raw_writel(ptcmd, psc_base + PTCMD);
do {
epcpr = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE +
EPCPR);
epcpr = __raw_readl(psc_base + EPCPR);
} while ((((epcpr >> domain) & 1) == 0));
pdctl1 = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE + PDCTL1);
pdctl1 = __raw_readl(psc_base + PDCTL1);
pdctl1 |= 0x100;
davinci_writel(pdctl1, DAVINCI_PWR_SLEEP_CNTRL_BASE + PDCTL1);
__raw_writel(pdctl1, psc_base + PDCTL1);
do {
ptstat = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE +
ptstat = __raw_readl(psc_base +
PTSTAT);
} while (!(((ptstat >> domain) & 1) == 0));
} else {
ptcmd = 1 << domain;
davinci_writel(ptcmd, DAVINCI_PWR_SLEEP_CNTRL_BASE + PTCMD);
__raw_writel(ptcmd, psc_base + PTCMD);
do {
ptstat = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE +
PTSTAT);
ptstat = __raw_readl(psc_base + PTSTAT);
} while (!(((ptstat >> domain) & 1) == 0));
}
if (enable)
mdstat_mask = 0x3;
else
mdstat_mask = 0x2;
do {
mdstat = davinci_readl(DAVINCI_PWR_SLEEP_CNTRL_BASE +
MDSTAT + 4 * id);
} while (!((mdstat & 0x0000001F) == mdstat_mask));
if (enable)
davinci_psc_mux(id);
}
void __init davinci_psc_init(void)
{
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_VPSSMSTR, 1);
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_VPSSSLV, 1);
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_TPCC, 1);
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_TPTC0, 1);
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_TPTC1, 1);
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_GPIO, 1);
/* Turn on WatchDog timer LPSC. Needed for RESET to work */
davinci_psc_config(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_TIMER2, 1);
mdstat = __raw_readl(psc_base + MDSTAT + 4 * id);
} while (!((mdstat & MDSTAT_STATE_MASK) == next_state));
}

95
arch/arm/mach-davinci/serial.c
View File

@ -32,32 +32,47 @@
#include <mach/hardware.h>
#include <mach/serial.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include "clock.h"
#define UART_DAVINCI_PWREMU 0x0c
static inline unsigned int davinci_serial_in(struct plat_serial8250_port *up,
int offset)
static inline unsigned int serial_read_reg(struct plat_serial8250_port *up,
int offset)
{
offset <<= up->regshift;
return (unsigned int)__raw_readb(up->membase + offset);
return (unsigned int)__raw_readl(IO_ADDRESS(up->mapbase) + offset);
}
static inline void davinci_serial_outp(struct plat_serial8250_port *p,
int offset, int value)
static inline void serial_write_reg(struct plat_serial8250_port *p, int offset,
int value)
{
offset <<= p->regshift;
__raw_writeb(value, p->membase + offset);
__raw_writel(value, IO_ADDRESS(p->mapbase) + offset);
}
static struct plat_serial8250_port serial_platform_data[] = {
{
.membase = (char *)IO_ADDRESS(DAVINCI_UART0_BASE),
.mapbase = (unsigned long)DAVINCI_UART0_BASE,
.mapbase = DAVINCI_UART0_BASE,
.irq = IRQ_UARTINT0,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
UPF_IOREMAP,
.iotype = UPIO_MEM,
.regshift = 2,
},
{
.mapbase = DAVINCI_UART1_BASE,
.irq = IRQ_UARTINT1,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
UPF_IOREMAP,
.iotype = UPIO_MEM,
.regshift = 2,
},
{
.mapbase = DAVINCI_UART2_BASE,
.irq = IRQ_UARTINT2,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
UPF_IOREMAP,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 27000000,
},
{
.flags = 0
@ -74,22 +89,68 @@ static struct platform_device serial_device = {
static void __init davinci_serial_reset(struct plat_serial8250_port *p)
{
/* reset both transmitter and receiver: bits 14,13 = UTRST, URRST */
unsigned int pwremu = 0;
davinci_serial_outp(p, UART_IER, 0); /* disable all interrupts */
serial_write_reg(p, UART_IER, 0); /* disable all interrupts */
davinci_serial_outp(p, UART_DAVINCI_PWREMU, pwremu);
/* reset both transmitter and receiver: bits 14,13 = UTRST, URRST */
serial_write_reg(p, UART_DAVINCI_PWREMU, pwremu);
mdelay(10);
pwremu |= (0x3 << 13);
pwremu |= 0x1;
davinci_serial_outp(p, UART_DAVINCI_PWREMU, pwremu);
serial_write_reg(p, UART_DAVINCI_PWREMU, pwremu);
if (cpu_is_davinci_dm646x())
serial_write_reg(p, UART_DM646X_SCR,
UART_DM646X_SCR_TX_WATERMARK);
}
void __init davinci_serial_init(struct davinci_uart_config *info)
{
int i;
char name[16];
struct clk *uart_clk;
struct device *dev = &serial_device.dev;
/*
* Make sure the serial ports are muxed on at this point.
* You have to mux them off in device drivers later on
* if not needed.
*/
for (i = 0; i < DAVINCI_MAX_NR_UARTS; i++) {
struct plat_serial8250_port *p = serial_platform_data + i;
if (!(info->enabled_uarts & (1 << i))) {
p->flags = 0;
continue;
}
if (cpu_is_davinci_dm646x())
p->iotype = UPIO_MEM32;
if (cpu_is_davinci_dm355()) {
if (i == 2) {
p->mapbase = (unsigned long)DM355_UART2_BASE;
p->irq = IRQ_DM355_UARTINT2;
}
}
sprintf(name, "uart%d", i);
uart_clk = clk_get(dev, name);
if (IS_ERR(uart_clk))
printk(KERN_ERR "%s:%d: failed to get UART%d clock\n",
__func__, __LINE__, i);
else {
clk_enable(uart_clk);
p->uartclk = clk_get_rate(uart_clk);
davinci_serial_reset(p);
}
}
}
static int __init davinci_init(void)
{
davinci_serial_reset(&serial_platform_data[0]);
return platform_device_register(&serial_device);
}

103
arch/arm/mach-davinci/time.c
View File

@ -16,6 +16,9 @@
#include <linux/clockchips.h>
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/device.h>
#include <mach/hardware.h>
#include <asm/system.h>
@ -24,8 +27,11 @@
#include <asm/mach/time.h>
#include <asm/errno.h>
#include <mach/io.h>
#include <mach/cputype.h>
#include "clock.h"
static struct clock_event_device clockevent_davinci;
static unsigned int davinci_clock_tick_rate;
#define DAVINCI_TIMER0_BASE (IO_PHYS + 0x21400)
#define DAVINCI_TIMER1_BASE (IO_PHYS + 0x21800)
@ -99,9 +105,9 @@ struct timer_s {
unsigned int id;
unsigned long period;
unsigned long opts;
unsigned long reg_base;
unsigned long tim_reg;
unsigned long prd_reg;
void __iomem *base;
unsigned long tim_off;
unsigned long prd_off;
unsigned long enamode_shift;
struct irqaction irqaction;
};
@ -114,15 +120,15 @@ static struct timer_s timers[];
static int timer32_config(struct timer_s *t)
{
u32 tcr = davinci_readl(t->reg_base + TCR);
u32 tcr = __raw_readl(t->base + TCR);
/* disable timer */
tcr &= ~(TCR_ENAMODE_MASK << t->enamode_shift);
davinci_writel(tcr, t->reg_base + TCR);
__raw_writel(tcr, t->base + TCR);
/* reset counter to zero, set new period */
davinci_writel(0, t->tim_reg);
davinci_writel(t->period, t->prd_reg);
__raw_writel(0, t->base + t->tim_off);
__raw_writel(t->period, t->base + t->prd_off);
/* Set enable mode */
if (t->opts & TIMER_OPTS_ONESHOT) {
@ -131,13 +137,13 @@ static int timer32_config(struct timer_s *t)
tcr |= TCR_ENAMODE_PERIODIC << t->enamode_shift;
}
davinci_writel(tcr, t->reg_base + TCR);
__raw_writel(tcr, t->base + TCR);
return 0;
}
static inline u32 timer32_read(struct timer_s *t)
{
return davinci_readl(t->tim_reg);
return __raw_readl(t->base + t->tim_off);
}
static irqreturn_t timer_interrupt(int irq, void *dev_id)
@ -176,51 +182,54 @@ static struct timer_s timers[] = {
static void __init timer_init(void)
{
u32 bases[] = {DAVINCI_TIMER0_BASE, DAVINCI_TIMER1_BASE};
u32 phys_bases[] = {DAVINCI_TIMER0_BASE, DAVINCI_TIMER1_BASE};
int i;
/* Global init of each 64-bit timer as a whole */
for(i=0; i<2; i++) {
u32 tgcr, base = bases[i];
u32 tgcr;
void __iomem *base = IO_ADDRESS(phys_bases[i]);
/* Disabled, Internal clock source */
davinci_writel(0, base + TCR);
__raw_writel(0, base + TCR);
/* reset both timers, no pre-scaler for timer34 */
tgcr = 0;
davinci_writel(tgcr, base + TGCR);
__raw_writel(tgcr, base + TGCR);
/* Set both timers to unchained 32-bit */
tgcr = TGCR_TIMMODE_32BIT_UNCHAINED << TGCR_TIMMODE_SHIFT;
davinci_writel(tgcr, base + TGCR);
__raw_writel(tgcr, base + TGCR);
/* Unreset timers */
tgcr |= (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) |
(TGCR_UNRESET << TGCR_TIM34RS_SHIFT);
davinci_writel(tgcr, base + TGCR);
__raw_writel(tgcr, base + TGCR);
/* Init both counters to zero */
davinci_writel(0, base + TIM12);
davinci_writel(0, base + TIM34);
__raw_writel(0, base + TIM12);
__raw_writel(0, base + TIM34);
}
/* Init of each timer as a 32-bit timer */
for (i=0; i< ARRAY_SIZE(timers); i++) {
struct timer_s *t = &timers[i];
u32 phys_base;
if (t->name) {
t->id = i;
t->reg_base = (IS_TIMER1(t->id) ?
phys_base = (IS_TIMER1(t->id) ?
DAVINCI_TIMER1_BASE : DAVINCI_TIMER0_BASE);
t->base = IO_ADDRESS(phys_base);
if (IS_TIMER_BOT(t->id)) {
t->enamode_shift = 6;
t->tim_reg = t->reg_base + TIM12;
t->prd_reg = t->reg_base + PRD12;
t->tim_off = TIM12;
t->prd_off = PRD12;
} else {
t->enamode_shift = 22;
t->tim_reg = t->reg_base + TIM34;
t->prd_reg = t->reg_base + PRD34;
t->tim_off = TIM34;
t->prd_off = PRD34;
}
/* Register interrupt */
@ -274,7 +283,7 @@ static void davinci_set_mode(enum clock_event_mode mode,
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
t->period = CLOCK_TICK_RATE / (HZ);
t->period = davinci_clock_tick_rate / (HZ);
t->opts = TIMER_OPTS_PERIODIC;
timer32_config(t);
break;
@ -301,21 +310,29 @@ static struct clock_event_device clockevent_davinci = {
static void __init davinci_timer_init(void)
{
struct clk *timer_clk;
static char err[] __initdata = KERN_ERR
"%s: can't register clocksource!\n";
/* init timer hw */
timer_init();
timer_clk = clk_get(NULL, "timer0");
BUG_ON(IS_ERR(timer_clk));
clk_enable(timer_clk);
davinci_clock_tick_rate = clk_get_rate(timer_clk);
/* setup clocksource */
clocksource_davinci.mult =
clocksource_khz2mult(CLOCK_TICK_RATE/1000,
clocksource_khz2mult(davinci_clock_tick_rate/1000,
clocksource_davinci.shift);
if (clocksource_register(&clocksource_davinci))
printk(err, clocksource_davinci.name);
/* setup clockevent */
clockevent_davinci.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
clockevent_davinci.mult = div_sc(davinci_clock_tick_rate, NSEC_PER_SEC,
clockevent_davinci.shift);
clockevent_davinci.max_delta_ns =
clockevent_delta2ns(0xfffffffe, &clockevent_davinci);
@ -333,42 +350,52 @@ struct sys_timer davinci_timer = {
/* reset board using watchdog timer */
void davinci_watchdog_reset(void) {
u32 tgcr, wdtcr, base = DAVINCI_WDOG_BASE;
u32 tgcr, wdtcr;
void __iomem *base = IO_ADDRESS(DAVINCI_WDOG_BASE);
struct device dev;
struct clk *wd_clk;
char *name = "watchdog";
dev_set_name(&dev, name);
wd_clk = clk_get(&dev, NULL);
if (WARN_ON(IS_ERR(wd_clk)))
return;
clk_enable(wd_clk);
/* disable, internal clock source */
davinci_writel(0, base + TCR);
__raw_writel(0, base + TCR);
/* reset timer, set mode to 64-bit watchdog, and unreset */
tgcr = 0;
davinci_writel(tgcr, base + TCR);
__raw_writel(tgcr, base + TCR);
tgcr = TGCR_TIMMODE_64BIT_WDOG << TGCR_TIMMODE_SHIFT;
tgcr |= (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) |
(TGCR_UNRESET << TGCR_TIM34RS_SHIFT);
davinci_writel(tgcr, base + TCR);
__raw_writel(tgcr, base + TCR);
/* clear counter and period regs */
davinci_writel(0, base + TIM12);
davinci_writel(0, base + TIM34);
davinci_writel(0, base + PRD12);
davinci_writel(0, base + PRD34);
__raw_writel(0, base + TIM12);
__raw_writel(0, base + TIM34);
__raw_writel(0, base + PRD12);
__raw_writel(0, base + PRD34);
/* enable */
wdtcr = davinci_readl(base + WDTCR);
wdtcr = __raw_readl(base + WDTCR);
wdtcr |= WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT;
davinci_writel(wdtcr, base + WDTCR);
__raw_writel(wdtcr, base + WDTCR);
/* put watchdog in pre-active state */
wdtcr = (WDTCR_WDKEY_SEQ0 << WDTCR_WDKEY_SHIFT) |
(WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT);
davinci_writel(wdtcr, base + WDTCR);
__raw_writel(wdtcr, base + WDTCR);
/* put watchdog in active state */
wdtcr = (WDTCR_WDKEY_SEQ1 << WDTCR_WDKEY_SHIFT) |
(WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT);
davinci_writel(wdtcr, base + WDTCR);
__raw_writel(wdtcr, base + WDTCR);
/* write an invalid value to the WDKEY field to trigger
* a watchdog reset */
wdtcr = 0x00004000;
davinci_writel(wdtcr, base + WDTCR);
__raw_writel(wdtcr, base + WDTCR);
}

2
arch/arm/mach-davinci/usb.c
View File

@ -14,6 +14,8 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
#define DAVINCI_USB_OTG_BASE 0x01C64000
#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
static struct musb_hdrc_eps_bits musb_eps[] = {
{ "ep1_tx", 8, },