hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[ARM] pxa: mmc: add 1st host controller support for pxa3xx 

This patchis to add the first mmc controller support for pxa3xx.
It's valid for pxa3[0|1|2]0.

On zylonite, the first controller supports two slots, this patch
only support the first one right now.

Signed-off-by: Bridge Wu <bridge.wu@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Bridge Wu 2007-12-21 19:00:13 +08:00 committed by Russell King
parent 8f58de7c39
commit fafc9d3fa3
7 changed files with 125 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-pxa/devices.c
View File

@ -51,7 +51,7 @@ static u64 pxamci_dmamask = 0xffffffffUL;
struct platform_device pxa_device_mci = {
.name = "pxa2xx-mci",
.id = -1,
.id = 0,
.dev = {
.dma_mask = &pxamci_dmamask,
.coherent_dma_mask = 0xffffffff,

2
arch/arm/mach-pxa/pxa3xx.c
View File

@ -194,6 +194,8 @@ static struct clk pxa3xx_clks[] = {
PXA3xx_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
PXA3xx_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
PXA3xx_CKEN("SSPCLK", SSP4, 13000000, 0, &pxa3xx_device_ssp4.dev),
PXA3xx_CKEN("MMCCLK", MMC1, 19500000, 0, &pxa_device_mci.dev),
};
void __init pxa3xx_init_irq(void)

86
arch/arm/mach-pxa/zylonite.c
View File

@ -25,9 +25,13 @@
#include <asm/arch/gpio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/zylonite.h>
#include <asm/arch/mmc.h>
#include "generic.h"
#define MAX_SLOTS 2
struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS];
int gpio_backlight;
int gpio_eth_irq;
@ -156,6 +160,87 @@ static void __init zylonite_init_lcd(void)
static inline void zylonite_init_lcd(void) {}
#endif
#if defined(CONFIG_MMC)
static int zylonite_mci_ro(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
return gpio_get_value(zylonite_mmc_slot[pdev->id].gpio_wp);
}
static int zylonite_mci_init(struct device *dev,
irq_handler_t zylonite_detect_int,
void *data)
{
struct platform_device *pdev = to_platform_device(dev);
int err, cd_irq, gpio_cd, gpio_wp;
cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
/*
* setup GPIO for Zylonite MMC controller
*/
err = gpio_request(gpio_cd, "mmc card detect");
if (err)
goto err_request_cd;
gpio_direction_input(gpio_cd);
err = gpio_request(gpio_wp, "mmc write protect");
if (err)
goto err_request_wp;
gpio_direction_input(gpio_wp);
err = request_irq(cd_irq, zylonite_detect_int,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "%s: MMC/SD/SDIO: "
"can't request card detect IRQ\n", __func__);
goto err_request_irq;
}
return 0;
err_request_irq:
gpio_free(gpio_wp);
err_request_wp:
gpio_free(gpio_cd);
err_request_cd:
return err;
}
static void zylonite_mci_exit(struct device *dev, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
int cd_irq, gpio_cd, gpio_wp;
cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
free_irq(cd_irq, data);
gpio_free(gpio_cd);
gpio_free(gpio_wp);
}
static struct pxamci_platform_data zylonite_mci_platform_data = {
.detect_delay = 20,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = zylonite_mci_init,
.exit = zylonite_mci_exit,
.get_ro = zylonite_mci_ro,
};
static void __init zylonite_init_mmc(void)
{
pxa_set_mci_info(&zylonite_mci_platform_data);
}
#else
static inline void zylonite_init_mmc(void) {}
#endif
static void __init zylonite_init(void)
{
/* board-processor specific initialization */
@ -171,6 +256,7 @@ static void __init zylonite_init(void)
platform_device_register(&smc91x_device);
zylonite_init_lcd();
zylonite_init_mmc();
}
MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)")

13
arch/arm/mach-pxa/zylonite_pxa300.c
View File

@ -88,6 +88,15 @@ static mfp_cfg_t common_mfp_cfg[] __initdata = {
GPIO4_2_KP_MKOUT_5,
GPIO5_2_KP_MKOUT_6,
GPIO6_2_KP_MKOUT_7,
/* MMC1 */
GPIO3_MMC1_DAT0,
GPIO4_MMC1_DAT1,
GPIO5_MMC1_DAT2,
GPIO6_MMC1_DAT3,
GPIO7_MMC1_CLK,
GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
GPIO15_GPIO, /* CMD1 default as GPIO for slot 0 */
};
static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
@ -174,6 +183,10 @@ void __init zylonite_pxa300_init(void)
/* GPIO pin assignment */
gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
/* MMC card detect & write protect for controller 0 */
zylonite_mmc_slot[0].gpio_cd = EXT_GPIO(0);
zylonite_mmc_slot[0].gpio_wp = EXT_GPIO(2);
}
if (cpu_is_pxa300()) {

13
arch/arm/mach-pxa/zylonite_pxa320.c
View File

@ -95,6 +95,15 @@ static mfp_cfg_t mfp_cfg[] __initdata = {
/* Ethernet */
GPIO4_nCS3,
GPIO90_GPIO,
/* MMC1 */
GPIO18_MMC1_DAT0,
GPIO19_MMC1_DAT1,
GPIO20_MMC1_DAT2,
GPIO21_MMC1_DAT3,
GPIO22_MMC1_CLK,
GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
GPIO31_GPIO, /* CMD1 default as GPIO for slot 0 */
};
#define NUM_LCD_DETECT_PINS 7
@ -169,5 +178,9 @@ void __init zylonite_pxa320_init(void)
/* GPIO pin assignment */
gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO14);
gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO9);
/* MMC card detect & write protect for controller 0 */
zylonite_mmc_slot[0].gpio_cd = mfp_to_gpio(MFP_PIN_GPIO1);
zylonite_mmc_slot[0].gpio_wp = mfp_to_gpio(MFP_PIN_GPIO5);
}
}

2
drivers/mmc/host/pxamci.h
View File

@ -68,7 +68,7 @@
#define PRG_DONE (1 << 1)
#define DATA_TRAN_DONE (1 << 0)
#ifdef CONFIG_PXA27x
#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
#define MMC_I_MASK_ALL 0x00001fff
#else
#define MMC_I_MASK_ALL 0x0000007f

9
include/asm-arm/arch-pxa/zylonite.h
View File

@ -3,9 +3,18 @@
#define ZYLONITE_ETH_PHYS 0x14000000
#define EXT_GPIO(x) (128 + (x))
/* the following variables are processor specific and initialized
* by the corresponding zylonite_pxa3xx_init()
*/
struct platform_mmc_slot {
int gpio_cd;
int gpio_wp;
};
extern struct platform_mmc_slot zylonite_mmc_slot[];
extern int gpio_backlight;
extern int gpio_eth_irq;