[PATCH 4/8 v2] S3C64xx: add HSMMC2 support
Maurus Cuelenaere
mcuelenaere at gmail.com
Mon Nov 23 07:34:46 EST 2009
This adds support for the third SDHCI controller.
Signed-off-by: Maurus Cuelenaere <mcuelenaere at gmail.com>
---
arch/arm/mach-s3c6400/s3c6400.c | 1 +
arch/arm/mach-s3c6410/cpu.c | 1 +
arch/arm/plat-s3c/Kconfig | 5 ++
arch/arm/plat-s3c/Makefile | 1 +
arch/arm/plat-s3c/dev-hsmmc2.c | 69 ++++++++++++++++++++++++++++++
arch/arm/plat-s3c/include/plat/sdhci.h | 25 +++++++++++
arch/arm/plat-s3c64xx/setup-sdhci-gpio.c | 20 +++++++++
7 files changed, 122 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-s3c/dev-hsmmc2.c
diff --git a/arch/arm/mach-s3c6400/s3c6400.c b/arch/arm/mach-s3c6400/s3c6400.c
index b42bdd0..d876ee5 100644
--- a/arch/arm/mach-s3c6400/s3c6400.c
+++ b/arch/arm/mach-s3c6400/s3c6400.c
@@ -45,6 +45,7 @@ void __init s3c6400_map_io(void)
s3c6400_default_sdhci0();
s3c6400_default_sdhci1();
+ s3c6400_default_sdhci2();
/* the i2c devices are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
diff --git a/arch/arm/mach-s3c6410/cpu.c b/arch/arm/mach-s3c6410/cpu.c
index 9b67c66..522c086 100644
--- a/arch/arm/mach-s3c6410/cpu.c
+++ b/arch/arm/mach-s3c6410/cpu.c
@@ -58,6 +58,7 @@ void __init s3c6410_map_io(void)
/* initialise device information early */
s3c6410_default_sdhci0();
s3c6410_default_sdhci1();
+ s3c6410_default_sdhci2();
/* the i2c devices are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index 8931c5f..57e685b 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -178,6 +178,11 @@ config S3C_DEV_HSMMC1
help
Compile in platform device definitions for HSMMC channel 1
+config S3C_DEV_HSMMC2
+ bool
+ help
+ Compile in platform device definitions for HSMMC channel 2
+
config S3C_DEV_I2C1
bool
help
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 3c09109..50444da 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_HAVE_PWM) += pwm.o
obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
+obj-$(CONFIG_S3C_DEV_HSMMC2) += dev-hsmmc2.o
obj-y += dev-i2c0.o
obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
diff --git a/arch/arm/plat-s3c/dev-hsmmc2.c b/arch/arm/plat-s3c/dev-hsmmc2.c
new file mode 100644
index 0000000..33506c1
--- /dev/null
+++ b/arch/arm/plat-s3c/dev-hsmmc2.c
@@ -0,0 +1,69 @@
+/* linux/arch/arm/plat-s3c/dev-hsmmc2.c
+ *
+ * Copyright (c) 2009 Maurus Cuelenaere
+ *
+ * Based on arch/arm/plat-s3c/dev-hsmmc1.c
+ * original file Copyright (c) 2008 Simtec Electronics
+ *
+ * S3C series device definition for hsmmc device 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/mmc/host.h>
+
+#include <mach/map.h>
+#include <plat/sdhci.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+
+#define S3C_SZ_HSMMC (0x1000)
+
+static struct resource s3c_hsmmc2_resource[] = {
+ [0] = {
+ .start = S3C_PA_HSMMC2,
+ .end = S3C_PA_HSMMC2 + S3C_SZ_HSMMC - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_HSMMC2,
+ .end = IRQ_HSMMC2,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static u64 s3c_device_hsmmc2_dmamask = 0xffffffffUL;
+
+struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata = {
+ .max_width = 4,
+ .host_caps = (MMC_CAP_4_BIT_DATA |
+ MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED),
+};
+
+struct platform_device s3c_device_hsmmc2 = {
+ .name = "s3c-sdhci",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(s3c_hsmmc2_resource),
+ .resource = s3c_hsmmc2_resource,
+ .dev = {
+ .dma_mask = &s3c_device_hsmmc2_dmamask,
+ .coherent_dma_mask = 0xffffffffUL,
+ .platform_data = &s3c_hsmmc2_def_platdata,
+ },
+};
+
+void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd)
+{
+ struct s3c_sdhci_platdata *set = &s3c_hsmmc2_def_platdata;
+
+ set->max_width = pd->max_width;
+
+ if (pd->cfg_gpio)
+ set->cfg_gpio = pd->cfg_gpio;
+ if (pd->cfg_card)
+ set->cfg_card = pd->cfg_card;
+}
diff --git a/arch/arm/plat-s3c/include/plat/sdhci.h
b/arch/arm/plat-s3c/include/plat/sdhci.h
index f615308..d5a3b41 100644
--- a/arch/arm/plat-s3c/include/plat/sdhci.h
+++ b/arch/arm/plat-s3c/include/plat/sdhci.h
@@ -57,6 +57,7 @@ struct s3c_sdhci_platdata {
*/
extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd);
+extern void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd);
/* Default platform data, exported so that per-cpu initialisation can
* set the correct one when there are more than one cpu type selected.
@@ -64,11 +65,13 @@ extern void s3c_sdhci1_set_platdata(struct
s3c_sdhci_platdata *pd);
extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata;
extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;
+extern struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata;
/* Helper function availablity */
extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
+extern void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
/* S3C6400 SDHCI setup */
@@ -103,6 +106,17 @@ static inline void s3c6400_default_sdhci1(void)
static inline void s3c6400_default_sdhci1(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC1 */
+#ifdef CONFIG_S3C_DEV_HSMMC2
+static inline void s3c6400_default_sdhci2(void)
+{
+ s3c_hsmmc2_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
+ s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio;
+ s3c_hsmmc2_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
+}
+#else
+static inline void s3c6400_default_sdhci2(void) { }
+#endif /* CONFIG_S3C_DEV_HSMMC2 */
+
#else
static inline void s3c6400_default_sdhci0(void) { }
static inline void s3c6400_default_sdhci1(void) { }
@@ -140,6 +154,17 @@ static inline void s3c6410_default_sdhci1(void)
static inline void s3c6410_default_sdhci1(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC1 */
+#ifdef CONFIG_S3C_DEV_HSMMC2
+static inline void s3c6410_default_sdhci2(void)
+{
+ s3c_hsmmc2_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
+ s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio;
+ s3c_hsmmc2_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
+}
+#else
+static inline void s3c6410_default_sdhci2(void) { }
+#endif /* CONFIG_S3C_DEV_HSMMC2 */
+
#else
static inline void s3c6410_default_sdhci0(void) { }
static inline void s3c6410_default_sdhci1(void) { }
diff --git a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
index 5417123..a58c0cc 100644
--- a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
+++ b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
@@ -53,3 +53,23 @@ void s3c64xx_setup_sdhci1_cfg_gpio(struct
platform_device *dev, int width)
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
}
+
+void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
+{
+ unsigned int gpio;
+ unsigned int end;
+
+ end = S3C64XX_GPH(6 + width);
+
+ /* Set all the necessary GPH pins to special-function 1 */
+ for (gpio = S3C64XX_GPH(6); gpio < end; gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+
+ /* Set all the necessary GPC pins to special-function 1 */
+ for (gpio = S3C64XX_GPC(4); gpio < S3C64XX_GPC(6); gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+}
--
1.6.5.3
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