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ar71xx: rb91x-nand: rewrite to use GPIO API

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Rewrite tha rb91x-nand driver to use GPIO API to
modify the NAND control lines.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39700
This commit is contained in:
Gabor Juhos
2014-02-23 07:19:32 +00:00
parent 8fea668cb7
commit 3d906ac6ac
3 changed files with 175 additions and 116 deletions
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23
target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
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@@ -23,6 +23,7 @@
#include <linux/routerboot.h>
#include <linux/gpio.h>
#include <linux/platform_data/gpio-latch.h>
#include <linux/platform_data/rb91x_nand.h>
#include <asm/prom.h>
#include <asm/mach-ath79/ath79.h>
@@ -54,6 +55,14 @@
#define RB91X_LATCH_GPIO_BASE AR934X_GPIO_COUNT
#define RB91X_LATCH_GPIO(_x) (RB91X_LATCH_GPIO_BASE + (_x))
#define RB91X_GPIO_NAND_READ RB91X_LATCH_GPIO(3)
#define RB91X_GPIO_NAND_RDY RB91X_LATCH_GPIO(4)
#define RB91X_GPIO_NLE RB91X_LATCH_GPIO(11)
#define RB91X_GPIO_NAND_NRW RB91X_LATCH_GPIO(12)
#define RB91X_GPIO_NAND_NCE RB91X_LATCH_GPIO(13)
#define RB91X_GPIO_NAND_CLE RB91X_LATCH_GPIO(14)
#define RB91X_GPIO_NAND_ALE RB91X_LATCH_GPIO(15)
struct rb_board_info {
const char *name;
u32 flags;
@@ -97,6 +106,16 @@ static struct gpio_latch_platform_data rb711gr100_gpio_latch_data __initdata = {
.le_active_low = true,
};
static struct rb91x_nand_platform_data rb711gr100_nand_data __initdata = {
.gpio_nce = RB91X_GPIO_NAND_NCE,
.gpio_ale = RB91X_GPIO_NAND_ALE,
.gpio_cle = RB91X_GPIO_NAND_CLE,
.gpio_rdy = RB91X_GPIO_NAND_RDY,
.gpio_read = RB91X_GPIO_NAND_READ,
.gpio_nrw = RB91X_GPIO_NAND_NRW,
.gpio_nle = RB91X_GPIO_NLE,
};
static void __init rb711gr100_init_partitions(const struct rb_info *info)
{
rb711gr100_spi_partitions[0].size = info->hard_cfg_offs;
@@ -179,7 +198,9 @@ static void __init rb711gr100_setup(void)
rb711gr100_wlan_init();
platform_device_register_simple("rb91x-nand", -1, NULL, 0);
platform_device_register_data(NULL, "rb91x-nand", -1,
&rb711gr100_nand_data,
sizeof(rb711gr100_nand_data));
platform_device_register_data(NULL, "gpio-latch", -1,
&rb711gr100_gpio_latch_data,