This patch add support for SDHCI blocks on Samsung Aquila board. The
following host controllers are defined:
1. Internal MoviNAND device (permanently wired to the controller)
2. Internal WiFI SDIO device (card is activated by power regualor)
3. External MMC/SD socket (card detection is provided by external
gpio interrupt)
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
arch/arm/mach-s5pv210/Kconfig | 4 ++
arch/arm/mach-s5pv210/mach-aquila.c | 66 +++++++++++++++++++++++++++++++++++
2 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index b7a2f38..dcc9d74 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -57,7 +57,11 @@ config MACH_AQUILA
select CPU_S5PV210
select ARCH_SPARSEMEM_ENABLE
select S5PV210_SETUP_FB_24BPP
+ select S5PV210_SETUP_SDHCI
select S3C_DEV_FB
+ select S3C_DEV_HSMMC
+ select S3C_DEV_HSMMC1
+ select S3C_DEV_HSMMC2
select S5PC110_DEV_ONENAND
help
Machine support for the Samsung Aquila target based on S5PC110 SoC
diff --git a/arch/arm/mach-s5pv210/mach-aquila.c b/arch/arm/mach-s5pv210/mach-aquila.c
index fb9dbb2..1b7fe79 100644
--- a/arch/arm/mach-s5pv210/mach-aquila.c
+++ b/arch/arm/mach-s5pv210/mach-aquila.c
@@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/serial_core.h>
#include <linux/fb.h>
+#include <linux/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -22,12 +23,15 @@
#include <mach/map.h>
#include <mach/regs-clock.h>
#include <mach/regs-fb.h>
+#include <mach/regs-gpio.h>
#include <plat/regs-serial.h>
#include <plat/s5pv210.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/fb.h>
+#include <plat/gpio-cfg.h>
+#include <plat/sdhci.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define S5PV210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -116,9 +120,66 @@ static struct s3c_fb_platdata aquila_lcd_pdata __initdata = {
.setup_gpio = s5pv210_fb_gpio_setup_24bpp,
};
+/* MoviNAND */
+static struct s3c_sdhci_platdata aquila_hsmmc0_data __initdata = {
+ .max_width = 4,
+ .cd_type = S3C_SDHCI_CD_PERMANENT,
+};
+
+/* Wireless LAN */
+static struct s3c_sdhci_platdata aquila_hsmmc1_data __initdata = {
+ .max_width = 4,
+ .cd_type = S3C_SDHCI_CD_EXTERNAL,
+ /* ext_cd_{init,cleanup} callbacks will be added later */
+};
+
+/* External Flash */
+#define AQUILA_EXT_FLASH_IRQ IRQ_EINT(28) /* S5PV210_GPH3(4) */
+#define AQUILA_EXT_FLASH_EN S5PV210_MP05(4)
+#define AQUILA_EXT_FLASH_CD S5PV210_GPH3(4)
+
+static irqreturn_t aquila_ext_flash_card_detect_isr(int irq, void *dev_id)
+{
+ void (*notify_func)(struct platform_device *, int state) = dev_id;
+ notify_func(&s3c_device_hsmmc2, !gpio_get_value(AQUILA_EXT_FLASH_CD));
+ return IRQ_HANDLED;
+}
+
+static int aquila_ext_flash_card_detect_init(
+ void (*notify_func)(struct platform_device *, int state))
+{
+ gpio_request(AQUILA_EXT_FLASH_EN, "FLASH_EN");
+ gpio_direction_output(AQUILA_EXT_FLASH_EN, 1);
+
+ if (request_irq(AQUILA_EXT_FLASH_IRQ, aquila_ext_flash_card_detect_isr,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "SDHCI card detect", notify_func))
+ printk(KERN_ERR "Error: cannot request irq for External Flash\n");
+ return 0;
+}
+
+static int aquila_ext_flash_card_detect_cleanup(
+ void (*notify_func)(struct platform_device *, int state))
+{
+ free_irq(AQUILA_EXT_FLASH_IRQ, notify_func);
+ gpio_direction_output(AQUILA_EXT_FLASH_EN, 0);
+ gpio_free(AQUILA_EXT_FLASH_EN);
+ return 0;
+}
+
+static struct s3c_sdhci_platdata aquila_hsmmc2_data __initdata = {
+ .max_width = 4,
+ .cd_type = S3C_SDHCI_CD_EXTERNAL,
+ .ext_cd_init = aquila_ext_flash_card_detect_init,
+ .ext_cd_cleanup = aquila_ext_flash_card_detect_cleanup,
+};
+
static struct platform_device *aquila_devices[] __initdata = {
&s3c_device_fb,
&s5pc110_device_onenand,
+ &s3c_device_hsmmc0,
+ &s3c_device_hsmmc1,
+ &s3c_device_hsmmc2,
};
static void __init aquila_map_io(void)
@@ -130,6 +191,11 @@ static void __init aquila_map_io(void)
static void __init aquila_machine_init(void)
{
+ /* SDHCI */
+ s3c_sdhci0_set_platdata(&aquila_hsmmc0_data);
+ s3c_sdhci1_set_platdata(&aquila_hsmmc1_data);
+ s3c_sdhci2_set_platdata(&aquila_hsmmc2_data);
+
/* FB */
s3c_fb_set_platdata(&aquila_lcd_pdata);
--
1.7.1.240.g225c
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