622 lines
15 KiB
C
622 lines
15 KiB
C
/*
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* TI DaVinci DM365 EVM board support
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*
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* Copyright (C) 2009 Texas Instruments Incorporated
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <linux/i2c/at24.h>
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#include <linux/leds.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/slab.h>
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#include <linux/mtd/nand.h>
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#include <linux/input.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/eeprom.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/mux.h>
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#include <mach/dm365.h>
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#include <mach/common.h>
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#include <mach/i2c.h>
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#include <mach/serial.h>
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#include <mach/mmc.h>
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#include <mach/nand.h>
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#include <mach/keyscan.h>
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#include <media/tvp514x.h>
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static inline int have_imager(void)
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{
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/* REVISIT when it's supported, trigger via Kconfig */
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return 0;
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}
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static inline int have_tvp7002(void)
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{
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/* REVISIT when it's supported, trigger via Kconfig */
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return 0;
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}
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#define DM365_EVM_PHY_ID "0:01"
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/*
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* A MAX-II CPLD is used for various board control functions.
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*/
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#define CPLD_OFFSET(a13a8,a2a1) (((a13a8) << 10) + ((a2a1) << 3))
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#define CPLD_VERSION CPLD_OFFSET(0,0) /* r/o */
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#define CPLD_TEST CPLD_OFFSET(0,1)
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#define CPLD_LEDS CPLD_OFFSET(0,2)
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#define CPLD_MUX CPLD_OFFSET(0,3)
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#define CPLD_SWITCH CPLD_OFFSET(1,0) /* r/o */
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#define CPLD_POWER CPLD_OFFSET(1,1)
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#define CPLD_VIDEO CPLD_OFFSET(1,2)
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#define CPLD_CARDSTAT CPLD_OFFSET(1,3) /* r/o */
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#define CPLD_DILC_OUT CPLD_OFFSET(2,0)
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#define CPLD_DILC_IN CPLD_OFFSET(2,1) /* r/o */
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#define CPLD_IMG_DIR0 CPLD_OFFSET(2,2)
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#define CPLD_IMG_MUX0 CPLD_OFFSET(2,3)
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#define CPLD_IMG_MUX1 CPLD_OFFSET(3,0)
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#define CPLD_IMG_DIR1 CPLD_OFFSET(3,1)
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#define CPLD_IMG_MUX2 CPLD_OFFSET(3,2)
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#define CPLD_IMG_MUX3 CPLD_OFFSET(3,3)
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#define CPLD_IMG_DIR2 CPLD_OFFSET(4,0)
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#define CPLD_IMG_MUX4 CPLD_OFFSET(4,1)
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#define CPLD_IMG_MUX5 CPLD_OFFSET(4,2)
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#define CPLD_RESETS CPLD_OFFSET(4,3)
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#define CPLD_CCD_DIR1 CPLD_OFFSET(0x3e,0)
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#define CPLD_CCD_IO1 CPLD_OFFSET(0x3e,1)
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#define CPLD_CCD_DIR2 CPLD_OFFSET(0x3e,2)
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#define CPLD_CCD_IO2 CPLD_OFFSET(0x3e,3)
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#define CPLD_CCD_DIR3 CPLD_OFFSET(0x3f,0)
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#define CPLD_CCD_IO3 CPLD_OFFSET(0x3f,1)
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static void __iomem *cpld;
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/* NOTE: this is geared for the standard config, with a socketed
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* 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors. If you
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* swap chips with a different block size, partitioning will
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* need to be changed. This NAND chip MT29F16G08FAA is the default
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* NAND shipped with the Spectrum Digital DM365 EVM
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*/
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#define NAND_BLOCK_SIZE SZ_128K
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static struct mtd_partition davinci_nand_partitions[] = {
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{
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/* UBL (a few copies) plus U-Boot */
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.name = "bootloader",
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.offset = 0,
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.size = 28 * NAND_BLOCK_SIZE,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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}, {
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/* U-Boot environment */
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = 2 * NAND_BLOCK_SIZE,
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.mask_flags = 0,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_4M,
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.mask_flags = 0,
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}, {
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.name = "filesystem1",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_512M,
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.mask_flags = 0,
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}, {
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.name = "filesystem2",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0,
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}
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/* two blocks with bad block table (and mirror) at the end */
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};
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static struct davinci_nand_pdata davinci_nand_data = {
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.mask_chipsel = BIT(14),
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.parts = davinci_nand_partitions,
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.nr_parts = ARRAY_SIZE(davinci_nand_partitions),
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.ecc_mode = NAND_ECC_HW,
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.options = NAND_USE_FLASH_BBT,
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.ecc_bits = 4,
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};
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static struct resource davinci_nand_resources[] = {
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{
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.start = DM365_ASYNC_EMIF_DATA_CE0_BASE,
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.end = DM365_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = DM365_ASYNC_EMIF_CONTROL_BASE,
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.end = DM365_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device davinci_nand_device = {
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.name = "davinci_nand",
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.id = 0,
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.num_resources = ARRAY_SIZE(davinci_nand_resources),
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.resource = davinci_nand_resources,
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.dev = {
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.platform_data = &davinci_nand_data,
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},
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};
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static struct at24_platform_data eeprom_info = {
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.byte_len = (256*1024) / 8,
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.page_size = 64,
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.flags = AT24_FLAG_ADDR16,
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.setup = davinci_get_mac_addr,
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.context = (void *)0x7f00,
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};
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static struct snd_platform_data dm365_evm_snd_data = {
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.asp_chan_q = EVENTQ_3,
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};
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static struct i2c_board_info i2c_info[] = {
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{
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I2C_BOARD_INFO("24c256", 0x50),
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.platform_data = &eeprom_info,
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},
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{
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I2C_BOARD_INFO("tlv320aic3x", 0x18),
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},
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};
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static struct davinci_i2c_platform_data i2c_pdata = {
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.bus_freq = 400 /* kHz */,
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.bus_delay = 0 /* usec */,
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};
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static int dm365evm_keyscan_enable(struct device *dev)
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{
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return davinci_cfg_reg(DM365_KEYSCAN);
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}
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static unsigned short dm365evm_keymap[] = {
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KEY_KP2,
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KEY_LEFT,
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KEY_EXIT,
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KEY_DOWN,
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KEY_ENTER,
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KEY_UP,
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KEY_KP1,
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KEY_RIGHT,
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KEY_MENU,
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KEY_RECORD,
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KEY_REWIND,
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KEY_KPMINUS,
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KEY_STOP,
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KEY_FASTFORWARD,
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KEY_KPPLUS,
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KEY_PLAYPAUSE,
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0
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};
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static struct davinci_ks_platform_data dm365evm_ks_data = {
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.device_enable = dm365evm_keyscan_enable,
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.keymap = dm365evm_keymap,
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.keymapsize = ARRAY_SIZE(dm365evm_keymap),
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.rep = 1,
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/* Scan period = strobe + interval */
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.strobe = 0x5,
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.interval = 0x2,
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.matrix_type = DAVINCI_KEYSCAN_MATRIX_4X4,
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};
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static int cpld_mmc_get_cd(int module)
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{
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if (!cpld)
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return -ENXIO;
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/* low == card present */
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return !(__raw_readb(cpld + CPLD_CARDSTAT) & BIT(module ? 4 : 0));
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}
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static int cpld_mmc_get_ro(int module)
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{
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if (!cpld)
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return -ENXIO;
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/* high == card's write protect switch active */
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return !!(__raw_readb(cpld + CPLD_CARDSTAT) & BIT(module ? 5 : 1));
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}
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static struct davinci_mmc_config dm365evm_mmc_config = {
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.get_cd = cpld_mmc_get_cd,
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.get_ro = cpld_mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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.version = MMC_CTLR_VERSION_2,
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};
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static void dm365evm_emac_configure(void)
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{
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/*
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* EMAC pins are multiplexed with GPIO and UART
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* Further details are available at the DM365 ARM
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* Subsystem Users Guide(sprufg5.pdf) pages 125 - 127
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*/
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davinci_cfg_reg(DM365_EMAC_TX_EN);
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davinci_cfg_reg(DM365_EMAC_TX_CLK);
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davinci_cfg_reg(DM365_EMAC_COL);
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davinci_cfg_reg(DM365_EMAC_TXD3);
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davinci_cfg_reg(DM365_EMAC_TXD2);
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davinci_cfg_reg(DM365_EMAC_TXD1);
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davinci_cfg_reg(DM365_EMAC_TXD0);
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davinci_cfg_reg(DM365_EMAC_RXD3);
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davinci_cfg_reg(DM365_EMAC_RXD2);
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davinci_cfg_reg(DM365_EMAC_RXD1);
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davinci_cfg_reg(DM365_EMAC_RXD0);
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davinci_cfg_reg(DM365_EMAC_RX_CLK);
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davinci_cfg_reg(DM365_EMAC_RX_DV);
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davinci_cfg_reg(DM365_EMAC_RX_ER);
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davinci_cfg_reg(DM365_EMAC_CRS);
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davinci_cfg_reg(DM365_EMAC_MDIO);
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davinci_cfg_reg(DM365_EMAC_MDCLK);
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/*
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* EMAC interrupts are multiplexed with GPIO interrupts
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* Details are available at the DM365 ARM
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* Subsystem Users Guide(sprufg5.pdf) pages 133 - 134
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*/
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davinci_cfg_reg(DM365_INT_EMAC_RXTHRESH);
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davinci_cfg_reg(DM365_INT_EMAC_RXPULSE);
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davinci_cfg_reg(DM365_INT_EMAC_TXPULSE);
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davinci_cfg_reg(DM365_INT_EMAC_MISCPULSE);
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}
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static void dm365evm_mmc_configure(void)
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{
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/*
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* MMC/SD pins are multiplexed with GPIO and EMIF
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* Further details are available at the DM365 ARM
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* Subsystem Users Guide(sprufg5.pdf) pages 118, 128 - 131
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*/
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davinci_cfg_reg(DM365_SD1_CLK);
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davinci_cfg_reg(DM365_SD1_CMD);
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davinci_cfg_reg(DM365_SD1_DATA3);
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davinci_cfg_reg(DM365_SD1_DATA2);
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davinci_cfg_reg(DM365_SD1_DATA1);
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davinci_cfg_reg(DM365_SD1_DATA0);
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}
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static struct tvp514x_platform_data tvp5146_pdata = {
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.clk_polarity = 0,
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.hs_polarity = 1,
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.vs_polarity = 1
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};
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#define TVP514X_STD_ALL (V4L2_STD_NTSC | V4L2_STD_PAL)
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/* Inputs available at the TVP5146 */
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static struct v4l2_input tvp5146_inputs[] = {
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{
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.index = 0,
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.name = "Composite",
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.type = V4L2_INPUT_TYPE_CAMERA,
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.std = TVP514X_STD_ALL,
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},
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{
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.index = 1,
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.name = "S-Video",
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.type = V4L2_INPUT_TYPE_CAMERA,
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.std = TVP514X_STD_ALL,
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},
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};
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/*
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* this is the route info for connecting each input to decoder
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* ouput that goes to vpfe. There is a one to one correspondence
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* with tvp5146_inputs
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*/
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static struct vpfe_route tvp5146_routes[] = {
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{
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.input = INPUT_CVBS_VI2B,
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.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
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},
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{
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.input = INPUT_SVIDEO_VI2C_VI1C,
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.output = OUTPUT_10BIT_422_EMBEDDED_SYNC,
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},
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};
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static struct vpfe_subdev_info vpfe_sub_devs[] = {
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{
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.name = "tvp5146",
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.grp_id = 0,
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.num_inputs = ARRAY_SIZE(tvp5146_inputs),
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.inputs = tvp5146_inputs,
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.routes = tvp5146_routes,
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.can_route = 1,
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.ccdc_if_params = {
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.if_type = VPFE_BT656,
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.hdpol = VPFE_PINPOL_POSITIVE,
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.vdpol = VPFE_PINPOL_POSITIVE,
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},
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.board_info = {
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I2C_BOARD_INFO("tvp5146", 0x5d),
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.platform_data = &tvp5146_pdata,
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},
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},
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};
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static struct vpfe_config vpfe_cfg = {
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.num_subdevs = ARRAY_SIZE(vpfe_sub_devs),
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.sub_devs = vpfe_sub_devs,
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.i2c_adapter_id = 1,
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.card_name = "DM365 EVM",
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.ccdc = "ISIF",
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};
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static void __init evm_init_i2c(void)
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{
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davinci_init_i2c(&i2c_pdata);
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i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
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}
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static struct platform_device *dm365_evm_nand_devices[] __initdata = {
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&davinci_nand_device,
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};
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static inline int have_leds(void)
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{
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#ifdef CONFIG_LEDS_CLASS
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return 1;
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#else
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return 0;
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#endif
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}
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struct cpld_led {
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struct led_classdev cdev;
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u8 mask;
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};
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static const struct {
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const char *name;
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const char *trigger;
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} cpld_leds[] = {
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{ "dm365evm::ds2", },
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{ "dm365evm::ds3", },
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{ "dm365evm::ds4", },
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{ "dm365evm::ds5", },
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{ "dm365evm::ds6", "nand-disk", },
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{ "dm365evm::ds7", "mmc1", },
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{ "dm365evm::ds8", "mmc0", },
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{ "dm365evm::ds9", "heartbeat", },
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};
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static void cpld_led_set(struct led_classdev *cdev, enum led_brightness b)
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{
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struct cpld_led *led = container_of(cdev, struct cpld_led, cdev);
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u8 reg = __raw_readb(cpld + CPLD_LEDS);
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if (b != LED_OFF)
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reg &= ~led->mask;
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else
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reg |= led->mask;
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__raw_writeb(reg, cpld + CPLD_LEDS);
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}
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static enum led_brightness cpld_led_get(struct led_classdev *cdev)
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{
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struct cpld_led *led = container_of(cdev, struct cpld_led, cdev);
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u8 reg = __raw_readb(cpld + CPLD_LEDS);
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return (reg & led->mask) ? LED_OFF : LED_FULL;
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}
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static int __init cpld_leds_init(void)
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{
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int i;
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if (!have_leds() || !cpld)
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return 0;
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/* setup LEDs */
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__raw_writeb(0xff, cpld + CPLD_LEDS);
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for (i = 0; i < ARRAY_SIZE(cpld_leds); i++) {
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struct cpld_led *led;
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led = kzalloc(sizeof(*led), GFP_KERNEL);
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if (!led)
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break;
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led->cdev.name = cpld_leds[i].name;
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led->cdev.brightness_set = cpld_led_set;
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led->cdev.brightness_get = cpld_led_get;
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led->cdev.default_trigger = cpld_leds[i].trigger;
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led->mask = BIT(i);
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if (led_classdev_register(NULL, &led->cdev) < 0) {
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kfree(led);
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break;
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}
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}
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return 0;
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}
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/* run after subsys_initcall() for LEDs */
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fs_initcall(cpld_leds_init);
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static void __init evm_init_cpld(void)
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{
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u8 mux, resets;
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const char *label;
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struct clk *aemif_clk;
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/* Make sure we can configure the CPLD through CS1. Then
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* leave it on for later access to MMC and LED registers.
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*/
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aemif_clk = clk_get(NULL, "aemif");
|
|
if (IS_ERR(aemif_clk))
|
|
return;
|
|
clk_enable(aemif_clk);
|
|
|
|
if (request_mem_region(DM365_ASYNC_EMIF_DATA_CE1_BASE, SECTION_SIZE,
|
|
"cpld") == NULL)
|
|
goto fail;
|
|
cpld = ioremap(DM365_ASYNC_EMIF_DATA_CE1_BASE, SECTION_SIZE);
|
|
if (!cpld) {
|
|
release_mem_region(DM365_ASYNC_EMIF_DATA_CE1_BASE,
|
|
SECTION_SIZE);
|
|
fail:
|
|
pr_err("ERROR: can't map CPLD\n");
|
|
clk_disable(aemif_clk);
|
|
return;
|
|
}
|
|
|
|
/* External muxing for some signals */
|
|
mux = 0;
|
|
|
|
/* Read SW5 to set up NAND + keypad _or_ OneNAND (sync read).
|
|
* NOTE: SW4 bus width setting must match!
|
|
*/
|
|
if ((__raw_readb(cpld + CPLD_SWITCH) & BIT(5)) == 0) {
|
|
/* external keypad mux */
|
|
mux |= BIT(7);
|
|
|
|
platform_add_devices(dm365_evm_nand_devices,
|
|
ARRAY_SIZE(dm365_evm_nand_devices));
|
|
} else {
|
|
/* no OneNAND support yet */
|
|
}
|
|
|
|
/* Leave external chips in reset when unused. */
|
|
resets = BIT(3) | BIT(2) | BIT(1) | BIT(0);
|
|
|
|
/* Static video input config with SN74CBT16214 1-of-3 mux:
|
|
* - port b1 == tvp7002 (mux lowbits == 1 or 6)
|
|
* - port b2 == imager (mux lowbits == 2 or 7)
|
|
* - port b3 == tvp5146 (mux lowbits == 5)
|
|
*
|
|
* Runtime switching could work too, with limitations.
|
|
*/
|
|
if (have_imager()) {
|
|
label = "HD imager";
|
|
mux |= 1;
|
|
|
|
/* externally mux MMC1/ENET/AIC33 to imager */
|
|
mux |= BIT(6) | BIT(5) | BIT(3);
|
|
} else {
|
|
struct davinci_soc_info *soc_info = &davinci_soc_info;
|
|
|
|
/* we can use MMC1 ... */
|
|
dm365evm_mmc_configure();
|
|
davinci_setup_mmc(1, &dm365evm_mmc_config);
|
|
|
|
/* ... and ENET ... */
|
|
dm365evm_emac_configure();
|
|
soc_info->emac_pdata->phy_id = DM365_EVM_PHY_ID;
|
|
resets &= ~BIT(3);
|
|
|
|
/* ... and AIC33 */
|
|
resets &= ~BIT(1);
|
|
|
|
if (have_tvp7002()) {
|
|
mux |= 2;
|
|
resets &= ~BIT(2);
|
|
label = "tvp7002 HD";
|
|
} else {
|
|
/* default to tvp5146 */
|
|
mux |= 5;
|
|
resets &= ~BIT(0);
|
|
label = "tvp5146 SD";
|
|
}
|
|
}
|
|
__raw_writeb(mux, cpld + CPLD_MUX);
|
|
__raw_writeb(resets, cpld + CPLD_RESETS);
|
|
pr_info("EVM: %s video input\n", label);
|
|
|
|
/* REVISIT export switches: NTSC/PAL (SW5.6), EXTRA1 (SW5.2), etc */
|
|
}
|
|
|
|
static struct davinci_uart_config uart_config __initdata = {
|
|
.enabled_uarts = (1 << 0),
|
|
};
|
|
|
|
static void __init dm365_evm_map_io(void)
|
|
{
|
|
/* setup input configuration for VPFE input devices */
|
|
dm365_set_vpfe_config(&vpfe_cfg);
|
|
dm365_init();
|
|
}
|
|
|
|
static struct spi_eeprom at25640 = {
|
|
.byte_len = SZ_64K / 8,
|
|
.name = "at25640",
|
|
.page_size = 32,
|
|
.flags = EE_ADDR2,
|
|
};
|
|
|
|
static struct spi_board_info dm365_evm_spi_info[] __initconst = {
|
|
{
|
|
.modalias = "at25",
|
|
.platform_data = &at25640,
|
|
.max_speed_hz = 10 * 1000 * 1000,
|
|
.bus_num = 0,
|
|
.chip_select = 0,
|
|
.mode = SPI_MODE_0,
|
|
},
|
|
};
|
|
|
|
static __init void dm365_evm_init(void)
|
|
{
|
|
evm_init_i2c();
|
|
davinci_serial_init(&uart_config);
|
|
|
|
dm365evm_emac_configure();
|
|
dm365evm_mmc_configure();
|
|
|
|
davinci_setup_mmc(0, &dm365evm_mmc_config);
|
|
|
|
/* maybe setup mmc1/etc ... _after_ mmc0 */
|
|
evm_init_cpld();
|
|
|
|
#ifdef CONFIG_SND_DM365_AIC3X_CODEC
|
|
dm365_init_asp(&dm365_evm_snd_data);
|
|
#elif defined(CONFIG_SND_DM365_VOICE_CODEC)
|
|
dm365_init_vc(&dm365_evm_snd_data);
|
|
#endif
|
|
dm365_init_rtc();
|
|
dm365_init_ks(&dm365evm_ks_data);
|
|
|
|
dm365_init_spi0(BIT(0), dm365_evm_spi_info,
|
|
ARRAY_SIZE(dm365_evm_spi_info));
|
|
}
|
|
|
|
MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
|
|
.boot_params = (0x80000100),
|
|
.map_io = dm365_evm_map_io,
|
|
.init_irq = davinci_irq_init,
|
|
.timer = &davinci_timer,
|
|
.init_machine = dm365_evm_init,
|
|
MACHINE_END
|
|
|