mirror of https://gitee.com/openkylin/linux.git
Memory controller drivers for v5.14 - PL353
Bigger work around ARM Primecell PL35x SMC memory controller driver by Miquel Raynal built on previous series from Naga Sureshkumar Relli. This includes bindings cleanup and correction, converting these to dtschema and several cleanyps in pl353-smc driver. -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEE3dJiKD0RGyM7briowTdm5oaLg9cFAmDDbN8QHGtyemtAa2Vy bmVsLm9yZwAKCRDBN2bmhouD1y6sD/0asCOer/fNfM4qDyr4TtDsBFO8ckKoH7h+ /VEDZGyIw5pc3RYyxp62i4qGzjAh2Q65SaGZ+AwCt1Hhcb3e5PutmYgqvNd6hnJR eWtUi8/kyzmvQhH+QG1umiOFAngv8hs1dmEfNHb51IYJMXp2f7l4byoCmZilqMaj em94DsLAE+AZaz00zucJpX8HG4UsqOvL+eZWn81AQKlMLM0OyiALCZwxNoXgYaaJ 6UZh7t3YMkQeK7V3Z+B98QP4hfAfCDhaO1K8femu1zfVq517ceab9oICXcKQ/TvO ntrKSBLXywWVwlBZIXqLM4k5XhZyVBUXEEUl+F8FQkEkxiewYA2WRFN7oOyvE3uZ l7NejRPGxUaQZ46Irtl6yhpqhgZAQ/dA+gk5RdaT6LdT8MF1GDkwS6Rh7rDOx6jg GBZ1l1A3b4/BX90LVTRIUnOnUkHLNRS4Fz4GQfpl0sBdSO+9ELyruJezhcZCza9M sIlyqNoKFDTvhby5xwDLJf78Dn6Ocft58BKMPl2IAaBvGem6pRdWmc8P6qSE7edv CixfGmSloPhZtFtN9gI6ME1SxKPCu/z8Yji5nRtNFbbXkVId8PDawO9mawf/GYeU KehtekzlDsr21by4bgXSqq6TLiXVgEzHy4aQp2t8fWJct/K9seFLLiPE8Ajrl6ce h9Zj3T3Frw== =iNR6 -----END PGP SIGNATURE----- Merge tag 'memory-controller-drv-pl353-5.14' into nand/next Memory controller drivers for v5.14 - PL353 Bigger work around ARM Primecell PL35x SMC memory controller driver by Miquel Raynal built on previous series from Naga Sureshkumar Relli. This includes bindings cleanup and correction, converting these to dtschema and several cleanyps in pl353-smc driver.
This commit is contained in:
Miquel Raynal
commit
0b34e320a4
|
|
@ -0,0 +1,131 @@
|
|||
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/memory-controllers/arm,pl353-smc.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: ARM PL353 Static Memory Controller (SMC) device-tree bindings
|
||||
|
||||
maintainers:
|
||||
- Miquel Raynal <miquel.raynal@bootlin.com>
|
||||
- Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
|
||||
|
||||
description:
|
||||
The PL353 Static Memory Controller is a bus where you can connect two kinds
|
||||
of memory interfaces, which are NAND and memory mapped interfaces (such as
|
||||
SRAM or NOR).
|
||||
|
||||
# We need a select here so we don't match all nodes with 'arm,primecell'
|
||||
select:
|
||||
properties:
|
||||
compatible:
|
||||
contains:
|
||||
const: arm,pl353-smc-r2p1
|
||||
required:
|
||||
- compatible
|
||||
|
||||
properties:
|
||||
$nodename:
|
||||
pattern: "^memory-controller@[0-9a-f]+$"
|
||||
|
||||
compatible:
|
||||
items:
|
||||
- const: arm,pl353-smc-r2p1
|
||||
- const: arm,primecell
|
||||
|
||||
"#address-cells":
|
||||
const: 2
|
||||
|
||||
"#size-cells":
|
||||
const: 1
|
||||
|
||||
reg:
|
||||
items:
|
||||
- description:
|
||||
Configuration registers for the host and sub-controllers.
|
||||
The three chip select regions are defined in 'ranges'.
|
||||
|
||||
clocks:
|
||||
items:
|
||||
- description: clock for the memory device bus
|
||||
- description: main clock of the SMC
|
||||
|
||||
clock-names:
|
||||
items:
|
||||
- const: memclk
|
||||
- const: apb_pclk
|
||||
|
||||
ranges:
|
||||
minItems: 1
|
||||
maxItems: 3
|
||||
description: |
|
||||
Memory bus areas for interacting with the devices. Reflects
|
||||
the memory layout with four integer values following:
|
||||
<cs-number> 0 <offset> <size>
|
||||
items:
|
||||
- description: NAND bank 0
|
||||
- description: NOR/SRAM bank 0
|
||||
- description: NOR/SRAM bank 1
|
||||
|
||||
interrupts: true
|
||||
|
||||
patternProperties:
|
||||
"@[0-3],[a-f0-9]+$":
|
||||
type: object
|
||||
description: |
|
||||
The child device node represents the controller connected to the SMC
|
||||
bus. The controller can be a NAND controller or a pair of any memory
|
||||
mapped controllers such as NOR and SRAM controllers.
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
description:
|
||||
Compatible of memory controller.
|
||||
|
||||
reg:
|
||||
items:
|
||||
- items:
|
||||
- description: |
|
||||
Chip-select ID, as in the parent range property.
|
||||
minimum: 0
|
||||
maximum: 2
|
||||
- description: |
|
||||
Offset of the memory region requested by the device.
|
||||
- description: |
|
||||
Length of the memory region requested by the device.
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
- clock-names
|
||||
- clocks
|
||||
- "#address-cells"
|
||||
- "#size-cells"
|
||||
- ranges
|
||||
|
||||
additionalProperties: false
|
||||
|
||||
examples:
|
||||
- |
|
||||
smcc: memory-controller@e000e000 {
|
||||
compatible = "arm,pl353-smc-r2p1", "arm,primecell";
|
||||
reg = <0xe000e000 0x0001000>;
|
||||
clock-names = "memclk", "apb_pclk";
|
||||
clocks = <&clkc 11>, <&clkc 44>;
|
||||
ranges = <0x0 0x0 0xe1000000 0x1000000 /* Nand CS region */
|
||||
0x1 0x0 0xe2000000 0x2000000 /* SRAM/NOR CS0 region */
|
||||
0x2 0x0 0xe4000000 0x2000000>; /* SRAM/NOR CS1 region */
|
||||
#address-cells = <2>;
|
||||
#size-cells = <1>;
|
||||
|
||||
nfc0: nand-controller@0,0 {
|
||||
compatible = "arm,pl353-nand-r2p1";
|
||||
reg = <0 0 0x1000000>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
};
|
||||
};
|
||||
|
|
@ -1,47 +0,0 @@
|
|||
Device tree bindings for ARM PL353 static memory controller
|
||||
|
||||
PL353 static memory controller supports two kinds of memory
|
||||
interfaces.i.e NAND and SRAM/NOR interfaces.
|
||||
The actual devices are instantiated from the child nodes of pl353 smc node.
|
||||
|
||||
Required properties:
|
||||
- compatible : Should be "arm,pl353-smc-r2p1", "arm,primecell".
|
||||
- reg : Controller registers map and length.
|
||||
- clock-names : List of input clock names - "memclk", "apb_pclk"
|
||||
(See clock bindings for details).
|
||||
- clocks : Clock phandles (see clock bindings for details).
|
||||
- address-cells : Must be 2.
|
||||
- size-cells : Must be 1.
|
||||
|
||||
Child nodes:
|
||||
For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are
|
||||
supported as child nodes.
|
||||
|
||||
for NAND partition information please refer the below file
|
||||
Documentation/devicetree/bindings/mtd/partition.txt
|
||||
|
||||
Example:
|
||||
smcc: memory-controller@e000e000
|
||||
compatible = "arm,pl353-smc-r2p1", "arm,primecell";
|
||||
clock-names = "memclk", "apb_pclk";
|
||||
clocks = <&clkc 11>, <&clkc 44>;
|
||||
reg = <0xe000e000 0x1000>;
|
||||
#address-cells = <2>;
|
||||
#size-cells = <1>;
|
||||
ranges = <0x0 0x0 0xe1000000 0x1000000 //Nand CS Region
|
||||
0x1 0x0 0xe2000000 0x2000000 //SRAM/NOR CS Region
|
||||
0x2 0x0 0xe4000000 0x2000000>; //SRAM/NOR CS Region
|
||||
nand_0: flash@e1000000 {
|
||||
compatible = "arm,pl353-nand-r2p1"
|
||||
reg = <0 0 0x1000000>;
|
||||
(...)
|
||||
};
|
||||
nor0: flash@e2000000 {
|
||||
compatible = "cfi-flash";
|
||||
reg = <1 0 0x2000000>;
|
||||
};
|
||||
nor1: flash@e4000000 {
|
||||
compatible = "cfi-flash";
|
||||
reg = <2 0 0x2000000>;
|
||||
};
|
||||
};
|
||||
|
|
@ -1453,6 +1453,14 @@ S: Odd Fixes
|
|||
F: drivers/amba/
|
||||
F: include/linux/amba/bus.h
|
||||
|
||||
ARM PRIMECELL PL35X SMC DRIVER
|
||||
M: Miquel Raynal <miquel.raynal@bootlin.com@bootlin.com>
|
||||
M: Naga Sureshkumar Relli <nagasure@xilinx.com>
|
||||
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
|
||||
S: Maintained
|
||||
F: Documentation/devicetree/bindings/mtd/arm,pl353-smc.yaml
|
||||
F: drivers/memory/pl353-smc.c
|
||||
|
||||
ARM PRIMECELL CLCD PL110 DRIVER
|
||||
M: Russell King <linux@armlinux.org.uk>
|
||||
S: Odd Fixes
|
||||
|
|
|
|||
|
|
@ -8,263 +8,22 @@
|
|||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/pl353-smc.h>
|
||||
#include <linux/amba/bus.h>
|
||||
|
||||
/* Register definitions */
|
||||
#define PL353_SMC_MEMC_STATUS_OFFS 0 /* Controller status reg, RO */
|
||||
#define PL353_SMC_CFG_CLR_OFFS 0xC /* Clear config reg, WO */
|
||||
#define PL353_SMC_DIRECT_CMD_OFFS 0x10 /* Direct command reg, WO */
|
||||
#define PL353_SMC_SET_CYCLES_OFFS 0x14 /* Set cycles register, WO */
|
||||
#define PL353_SMC_SET_OPMODE_OFFS 0x18 /* Set opmode register, WO */
|
||||
#define PL353_SMC_ECC_STATUS_OFFS 0x400 /* ECC status register */
|
||||
#define PL353_SMC_ECC_MEMCFG_OFFS 0x404 /* ECC mem config reg */
|
||||
#define PL353_SMC_ECC_MEMCMD1_OFFS 0x408 /* ECC mem cmd1 reg */
|
||||
#define PL353_SMC_ECC_MEMCMD2_OFFS 0x40C /* ECC mem cmd2 reg */
|
||||
#define PL353_SMC_ECC_VALUE0_OFFS 0x418 /* ECC value 0 reg */
|
||||
|
||||
/* Controller status register specific constants */
|
||||
#define PL353_SMC_MEMC_STATUS_RAW_INT_1_SHIFT 6
|
||||
|
||||
/* Clear configuration register specific constants */
|
||||
#define PL353_SMC_CFG_CLR_INT_CLR_1 0x10
|
||||
#define PL353_SMC_CFG_CLR_ECC_INT_DIS_1 0x40
|
||||
#define PL353_SMC_CFG_CLR_INT_DIS_1 0x2
|
||||
#define PL353_SMC_CFG_CLR_DEFAULT_MASK (PL353_SMC_CFG_CLR_INT_CLR_1 | \
|
||||
PL353_SMC_CFG_CLR_ECC_INT_DIS_1 | \
|
||||
PL353_SMC_CFG_CLR_INT_DIS_1)
|
||||
|
||||
/* Set cycles register specific constants */
|
||||
#define PL353_SMC_SET_CYCLES_T0_MASK 0xF
|
||||
#define PL353_SMC_SET_CYCLES_T0_SHIFT 0
|
||||
#define PL353_SMC_SET_CYCLES_T1_MASK 0xF
|
||||
#define PL353_SMC_SET_CYCLES_T1_SHIFT 4
|
||||
#define PL353_SMC_SET_CYCLES_T2_MASK 0x7
|
||||
#define PL353_SMC_SET_CYCLES_T2_SHIFT 8
|
||||
#define PL353_SMC_SET_CYCLES_T3_MASK 0x7
|
||||
#define PL353_SMC_SET_CYCLES_T3_SHIFT 11
|
||||
#define PL353_SMC_SET_CYCLES_T4_MASK 0x7
|
||||
#define PL353_SMC_SET_CYCLES_T4_SHIFT 14
|
||||
#define PL353_SMC_SET_CYCLES_T5_MASK 0x7
|
||||
#define PL353_SMC_SET_CYCLES_T5_SHIFT 17
|
||||
#define PL353_SMC_SET_CYCLES_T6_MASK 0xF
|
||||
#define PL353_SMC_SET_CYCLES_T6_SHIFT 20
|
||||
|
||||
/* ECC status register specific constants */
|
||||
#define PL353_SMC_ECC_STATUS_BUSY BIT(6)
|
||||
#define PL353_SMC_ECC_REG_SIZE_OFFS 4
|
||||
|
||||
/* ECC memory config register specific constants */
|
||||
#define PL353_SMC_ECC_MEMCFG_MODE_MASK 0xC
|
||||
#define PL353_SMC_ECC_MEMCFG_MODE_SHIFT 2
|
||||
#define PL353_SMC_ECC_MEMCFG_PGSIZE_MASK 0x3
|
||||
|
||||
#define PL353_SMC_DC_UPT_NAND_REGS ((4 << 23) | /* CS: NAND chip */ \
|
||||
(2 << 21)) /* UpdateRegs operation */
|
||||
|
||||
#define PL353_NAND_ECC_CMD1 ((0x80) | /* Write command */ \
|
||||
(0 << 8) | /* Read command */ \
|
||||
(0x30 << 16) | /* Read End command */ \
|
||||
(1 << 24)) /* Read End command calid */
|
||||
|
||||
#define PL353_NAND_ECC_CMD2 ((0x85) | /* Write col change cmd */ \
|
||||
(5 << 8) | /* Read col change cmd */ \
|
||||
(0xE0 << 16) | /* Read col change end cmd */ \
|
||||
(1 << 24)) /* Read col change end cmd valid */
|
||||
#define PL353_NAND_ECC_BUSY_TIMEOUT (1 * HZ)
|
||||
/**
|
||||
* struct pl353_smc_data - Private smc driver structure
|
||||
* @memclk: Pointer to the peripheral clock
|
||||
* @aclk: Pointer to the APER clock
|
||||
* @aclk: Pointer to the AXI peripheral clock
|
||||
*/
|
||||
struct pl353_smc_data {
|
||||
struct clk *memclk;
|
||||
struct clk *aclk;
|
||||
};
|
||||
|
||||
/* SMC virtual register base */
|
||||
static void __iomem *pl353_smc_base;
|
||||
|
||||
/**
|
||||
* pl353_smc_set_buswidth - Set memory buswidth
|
||||
* @bw: Memory buswidth (8 | 16)
|
||||
* Return: 0 on success or negative errno.
|
||||
*/
|
||||
int pl353_smc_set_buswidth(unsigned int bw)
|
||||
{
|
||||
if (bw != PL353_SMC_MEM_WIDTH_8 && bw != PL353_SMC_MEM_WIDTH_16)
|
||||
return -EINVAL;
|
||||
|
||||
writel(bw, pl353_smc_base + PL353_SMC_SET_OPMODE_OFFS);
|
||||
writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
|
||||
PL353_SMC_DIRECT_CMD_OFFS);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_set_buswidth);
|
||||
|
||||
/**
|
||||
* pl353_smc_set_cycles - Set memory timing parameters
|
||||
* @timings: NAND controller timing parameters
|
||||
*
|
||||
* Sets NAND chip specific timing parameters.
|
||||
*/
|
||||
void pl353_smc_set_cycles(u32 timings[])
|
||||
{
|
||||
/*
|
||||
* Set write pulse timing. This one is easy to extract:
|
||||
*
|
||||
* NWE_PULSE = tWP
|
||||
*/
|
||||
timings[0] &= PL353_SMC_SET_CYCLES_T0_MASK;
|
||||
timings[1] = (timings[1] & PL353_SMC_SET_CYCLES_T1_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T1_SHIFT;
|
||||
timings[2] = (timings[2] & PL353_SMC_SET_CYCLES_T2_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T2_SHIFT;
|
||||
timings[3] = (timings[3] & PL353_SMC_SET_CYCLES_T3_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T3_SHIFT;
|
||||
timings[4] = (timings[4] & PL353_SMC_SET_CYCLES_T4_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T4_SHIFT;
|
||||
timings[5] = (timings[5] & PL353_SMC_SET_CYCLES_T5_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T5_SHIFT;
|
||||
timings[6] = (timings[6] & PL353_SMC_SET_CYCLES_T6_MASK) <<
|
||||
PL353_SMC_SET_CYCLES_T6_SHIFT;
|
||||
timings[0] |= timings[1] | timings[2] | timings[3] |
|
||||
timings[4] | timings[5] | timings[6];
|
||||
|
||||
writel(timings[0], pl353_smc_base + PL353_SMC_SET_CYCLES_OFFS);
|
||||
writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
|
||||
PL353_SMC_DIRECT_CMD_OFFS);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_set_cycles);
|
||||
|
||||
/**
|
||||
* pl353_smc_ecc_is_busy - Read ecc busy flag
|
||||
* Return: the ecc_status bit from the ecc_status register. 1 = busy, 0 = idle
|
||||
*/
|
||||
bool pl353_smc_ecc_is_busy(void)
|
||||
{
|
||||
return ((readl(pl353_smc_base + PL353_SMC_ECC_STATUS_OFFS) &
|
||||
PL353_SMC_ECC_STATUS_BUSY) == PL353_SMC_ECC_STATUS_BUSY);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_ecc_is_busy);
|
||||
|
||||
/**
|
||||
* pl353_smc_get_ecc_val - Read ecc_valueN registers
|
||||
* @ecc_reg: Index of the ecc_value reg (0..3)
|
||||
* Return: the content of the requested ecc_value register.
|
||||
*
|
||||
* There are four valid ecc_value registers. The argument is truncated to stay
|
||||
* within this valid boundary.
|
||||
*/
|
||||
u32 pl353_smc_get_ecc_val(int ecc_reg)
|
||||
{
|
||||
u32 addr, reg;
|
||||
|
||||
addr = PL353_SMC_ECC_VALUE0_OFFS +
|
||||
(ecc_reg * PL353_SMC_ECC_REG_SIZE_OFFS);
|
||||
reg = readl(pl353_smc_base + addr);
|
||||
|
||||
return reg;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_get_ecc_val);
|
||||
|
||||
/**
|
||||
* pl353_smc_get_nand_int_status_raw - Get NAND interrupt status bit
|
||||
* Return: the raw_int_status1 bit from the memc_status register
|
||||
*/
|
||||
int pl353_smc_get_nand_int_status_raw(void)
|
||||
{
|
||||
u32 reg;
|
||||
|
||||
reg = readl(pl353_smc_base + PL353_SMC_MEMC_STATUS_OFFS);
|
||||
reg >>= PL353_SMC_MEMC_STATUS_RAW_INT_1_SHIFT;
|
||||
reg &= 1;
|
||||
|
||||
return reg;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_get_nand_int_status_raw);
|
||||
|
||||
/**
|
||||
* pl353_smc_clr_nand_int - Clear NAND interrupt
|
||||
*/
|
||||
void pl353_smc_clr_nand_int(void)
|
||||
{
|
||||
writel(PL353_SMC_CFG_CLR_INT_CLR_1,
|
||||
pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_clr_nand_int);
|
||||
|
||||
/**
|
||||
* pl353_smc_set_ecc_mode - Set SMC ECC mode
|
||||
* @mode: ECC mode (BYPASS, APB, MEM)
|
||||
* Return: 0 on success or negative errno.
|
||||
*/
|
||||
int pl353_smc_set_ecc_mode(enum pl353_smc_ecc_mode mode)
|
||||
{
|
||||
u32 reg;
|
||||
int ret = 0;
|
||||
|
||||
switch (mode) {
|
||||
case PL353_SMC_ECCMODE_BYPASS:
|
||||
case PL353_SMC_ECCMODE_APB:
|
||||
case PL353_SMC_ECCMODE_MEM:
|
||||
|
||||
reg = readl(pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
|
||||
reg &= ~PL353_SMC_ECC_MEMCFG_MODE_MASK;
|
||||
reg |= mode << PL353_SMC_ECC_MEMCFG_MODE_SHIFT;
|
||||
writel(reg, pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
|
||||
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_set_ecc_mode);
|
||||
|
||||
/**
|
||||
* pl353_smc_set_ecc_pg_size - Set SMC ECC page size
|
||||
* @pg_sz: ECC page size
|
||||
* Return: 0 on success or negative errno.
|
||||
*/
|
||||
int pl353_smc_set_ecc_pg_size(unsigned int pg_sz)
|
||||
{
|
||||
u32 reg, sz;
|
||||
|
||||
switch (pg_sz) {
|
||||
case 0:
|
||||
sz = 0;
|
||||
break;
|
||||
case SZ_512:
|
||||
sz = 1;
|
||||
break;
|
||||
case SZ_1K:
|
||||
sz = 2;
|
||||
break;
|
||||
case SZ_2K:
|
||||
sz = 3;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
reg = readl(pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
|
||||
reg &= ~PL353_SMC_ECC_MEMCFG_PGSIZE_MASK;
|
||||
reg |= sz;
|
||||
writel(reg, pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pl353_smc_set_ecc_pg_size);
|
||||
|
||||
static int __maybe_unused pl353_smc_suspend(struct device *dev)
|
||||
{
|
||||
struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev);
|
||||
|
|
@ -277,8 +36,8 @@ static int __maybe_unused pl353_smc_suspend(struct device *dev)
|
|||
|
||||
static int __maybe_unused pl353_smc_resume(struct device *dev)
|
||||
{
|
||||
int ret;
|
||||
struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
ret = clk_enable(pl353_smc->aclk);
|
||||
if (ret) {
|
||||
|
|
@ -296,77 +55,31 @@ static int __maybe_unused pl353_smc_resume(struct device *dev)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static struct amba_driver pl353_smc_driver;
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(pl353_smc_dev_pm_ops, pl353_smc_suspend,
|
||||
pl353_smc_resume);
|
||||
|
||||
/**
|
||||
* pl353_smc_init_nand_interface - Initialize the NAND interface
|
||||
* @adev: Pointer to the amba_device struct
|
||||
* @nand_node: Pointer to the pl353_nand device_node struct
|
||||
*/
|
||||
static void pl353_smc_init_nand_interface(struct amba_device *adev,
|
||||
struct device_node *nand_node)
|
||||
{
|
||||
unsigned long timeout;
|
||||
|
||||
pl353_smc_set_buswidth(PL353_SMC_MEM_WIDTH_8);
|
||||
writel(PL353_SMC_CFG_CLR_INT_CLR_1,
|
||||
pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
|
||||
writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
|
||||
PL353_SMC_DIRECT_CMD_OFFS);
|
||||
|
||||
timeout = jiffies + PL353_NAND_ECC_BUSY_TIMEOUT;
|
||||
/* Wait till the ECC operation is complete */
|
||||
do {
|
||||
if (pl353_smc_ecc_is_busy())
|
||||
cpu_relax();
|
||||
else
|
||||
break;
|
||||
} while (!time_after_eq(jiffies, timeout));
|
||||
|
||||
if (time_after_eq(jiffies, timeout))
|
||||
return;
|
||||
|
||||
writel(PL353_NAND_ECC_CMD1,
|
||||
pl353_smc_base + PL353_SMC_ECC_MEMCMD1_OFFS);
|
||||
writel(PL353_NAND_ECC_CMD2,
|
||||
pl353_smc_base + PL353_SMC_ECC_MEMCMD2_OFFS);
|
||||
}
|
||||
|
||||
static const struct of_device_id pl353_smc_supported_children[] = {
|
||||
{
|
||||
.compatible = "cfi-flash"
|
||||
},
|
||||
{
|
||||
.compatible = "arm,pl353-nand-r2p1",
|
||||
.data = pl353_smc_init_nand_interface
|
||||
},
|
||||
{}
|
||||
};
|
||||
|
||||
static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
|
||||
{
|
||||
struct device_node *of_node = adev->dev.of_node;
|
||||
const struct of_device_id *match = NULL;
|
||||
struct pl353_smc_data *pl353_smc;
|
||||
struct device_node *child;
|
||||
struct resource *res;
|
||||
int err;
|
||||
struct device_node *of_node = adev->dev.of_node;
|
||||
static void (*init)(struct amba_device *adev,
|
||||
struct device_node *nand_node);
|
||||
const struct of_device_id *match = NULL;
|
||||
|
||||
pl353_smc = devm_kzalloc(&adev->dev, sizeof(*pl353_smc), GFP_KERNEL);
|
||||
if (!pl353_smc)
|
||||
return -ENOMEM;
|
||||
|
||||
/* Get the NAND controller virtual address */
|
||||
res = &adev->res;
|
||||
pl353_smc_base = devm_ioremap_resource(&adev->dev, res);
|
||||
if (IS_ERR(pl353_smc_base))
|
||||
return PTR_ERR(pl353_smc_base);
|
||||
|
||||
pl353_smc->aclk = devm_clk_get(&adev->dev, "apb_pclk");
|
||||
if (IS_ERR(pl353_smc->aclk)) {
|
||||
dev_err(&adev->dev, "aclk clock not found.\n");
|
||||
|
|
@ -388,15 +101,11 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
err = clk_prepare_enable(pl353_smc->memclk);
|
||||
if (err) {
|
||||
dev_err(&adev->dev, "Unable to enable memory clock.\n");
|
||||
goto out_clk_dis_aper;
|
||||
goto disable_axi_clk;
|
||||
}
|
||||
|
||||
amba_set_drvdata(adev, pl353_smc);
|
||||
|
||||
/* clear interrupts */
|
||||
writel(PL353_SMC_CFG_CLR_DEFAULT_MASK,
|
||||
pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
|
||||
|
||||
/* Find compatible children. Only a single child is supported */
|
||||
for_each_available_child_of_node(of_node, child) {
|
||||
match = of_match_node(pl353_smc_supported_children, child);
|
||||
|
|
@ -408,19 +117,16 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
}
|
||||
if (!match) {
|
||||
dev_err(&adev->dev, "no matching children\n");
|
||||
goto out_clk_disable;
|
||||
goto disable_mem_clk;
|
||||
}
|
||||
|
||||
init = match->data;
|
||||
if (init)
|
||||
init(adev, child);
|
||||
of_platform_device_create(child, NULL, &adev->dev);
|
||||
|
||||
return 0;
|
||||
|
||||
out_clk_disable:
|
||||
disable_mem_clk:
|
||||
clk_disable_unprepare(pl353_smc->memclk);
|
||||
out_clk_dis_aper:
|
||||
disable_axi_clk:
|
||||
clk_disable_unprepare(pl353_smc->aclk);
|
||||
|
||||
return err;
|
||||
|
|
@ -436,8 +142,8 @@ static void pl353_smc_remove(struct amba_device *adev)
|
|||
|
||||
static const struct amba_id pl353_ids[] = {
|
||||
{
|
||||
.id = 0x00041353,
|
||||
.mask = 0x000fffff,
|
||||
.id = 0x00041353,
|
||||
.mask = 0x000fffff,
|
||||
},
|
||||
{ 0, 0 },
|
||||
};
|
||||
|
|
|
|||
|
|
@ -1,30 +0,0 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* ARM PL353 SMC Driver Header
|
||||
*
|
||||
* Copyright (C) 2012 - 2018 Xilinx, Inc
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_PL353_SMC_H
|
||||
#define __LINUX_PL353_SMC_H
|
||||
|
||||
enum pl353_smc_ecc_mode {
|
||||
PL353_SMC_ECCMODE_BYPASS = 0,
|
||||
PL353_SMC_ECCMODE_APB = 1,
|
||||
PL353_SMC_ECCMODE_MEM = 2
|
||||
};
|
||||
|
||||
enum pl353_smc_mem_width {
|
||||
PL353_SMC_MEM_WIDTH_8 = 0,
|
||||
PL353_SMC_MEM_WIDTH_16 = 1
|
||||
};
|
||||
|
||||
u32 pl353_smc_get_ecc_val(int ecc_reg);
|
||||
bool pl353_smc_ecc_is_busy(void);
|
||||
int pl353_smc_get_nand_int_status_raw(void);
|
||||
void pl353_smc_clr_nand_int(void);
|
||||
int pl353_smc_set_ecc_mode(enum pl353_smc_ecc_mode mode);
|
||||
int pl353_smc_set_ecc_pg_size(unsigned int pg_sz);
|
||||
int pl353_smc_set_buswidth(unsigned int bw);
|
||||
void pl353_smc_set_cycles(u32 timings[]);
|
||||
#endif
|
||||
Loading…
Reference in New Issue