ARM: S3C2416: Add platform helpers for setup SDHCI
authorYauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
Fri, 17 Dec 2010 05:42:09 +0000 (14:42 +0900)
committerKukjin Kim <kgene.kim@samsung.com>
Thu, 6 Jan 2011 05:09:18 +0000 (14:09 +0900)
Samsung S3C2416 has two SDHCI controllers compatible with other
Samsung's SoCs (S3C64XX, S5PC100 etc...).

Add required platform setup code that the devices can be used with
sdhci-s3c driver.

Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
[kgene.kim@samsung.com: change to __raw_{readl,writel} from {readl,writel}]
[kgene.kim@samsung.com: build error fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
arch/arm/mach-s3c2416/Kconfig
arch/arm/mach-s3c2416/Makefile
arch/arm/mach-s3c2416/s3c2416.c
arch/arm/mach-s3c2416/setup-sdhci-gpio.c [new file with mode: 0644]
arch/arm/mach-s3c2416/setup-sdhci.c [new file with mode: 0644]
arch/arm/plat-samsung/include/plat/sdhci.h

index df8d14974c90876b31d16ab2a2d2367ef1f7af89..69b48a7d1dbdb4502d55d103bb1fa382def5538e 100644 (file)
@@ -31,6 +31,17 @@ config S3C2416_PM
        help
          Internal config node to apply S3C2416 power management
 
+config S3C2416_SETUP_SDHCI
+       bool
+       select S3C2416_SETUP_SDHCI_GPIO
+       help
+         Internal helper functions for S3C2416 based SDHCI systems
+
+config S3C2416_SETUP_SDHCI_GPIO
+       bool
+       help
+         Common setup code for SDHCI gpio.
+
 menu "S3C2416 Machines"
 
 config MACH_SMDK2416
@@ -42,6 +53,7 @@ config MACH_SMDK2416
        select S3C_DEV_HSMMC1
        select S3C_DEV_NAND
        select S3C_DEV_USB_HOST
+       select S3C2416_SETUP_SDHCI
        select S3C2416_PM if PM
        help
          Say Y here if you are using an SMDK2416
index ef038d62ffdb08e32b4e67e7fad74b76c0ea2d68..7b805b279caf9cc2ebc3d3f1d334a6911add1b22 100644 (file)
@@ -14,6 +14,10 @@ obj-$(CONFIG_CPU_S3C2416)    += irq.o
 obj-$(CONFIG_S3C2416_PM)       += pm.o
 #obj-$(CONFIG_S3C2416_DMA)     += dma.o
 
+# Device setup
+obj-$(CONFIG_S3C2416_SETUP_SDHCI) += setup-sdhci.o
+obj-$(CONFIG_S3C2416_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
+
 # Machine support
 
 obj-$(CONFIG_MACH_SMDK2416)    += mach-smdk2416.o
index 63f39cdc0972f18300b47e28867afcd514a18385..ba7fd87374348e0b61c9624cefa155dc8418eb43 100644 (file)
@@ -53,6 +53,7 @@
 #include <plat/s3c2416.h>
 #include <plat/devs.h>
 #include <plat/cpu.h>
+#include <plat/sdhci.h>
 
 #include <plat/iic-core.h>
 #include <plat/fb-core.h>
@@ -115,6 +116,10 @@ void __init s3c2416_map_io(void)
        s3c24xx_gpiocfg_default.set_pull = s3c_gpio_setpull_updown;
        s3c24xx_gpiocfg_default.get_pull = s3c_gpio_getpull_updown;
 
+       /* initialize device information early */
+       s3c2416_default_sdhci0();
+       s3c2416_default_sdhci1();
+
        iotable_init(s3c2416_iodesc, ARRAY_SIZE(s3c2416_iodesc));
 }
 
diff --git a/arch/arm/mach-s3c2416/setup-sdhci-gpio.c b/arch/arm/mach-s3c2416/setup-sdhci-gpio.c
new file mode 100644 (file)
index 0000000..f65cb3e
--- /dev/null
@@ -0,0 +1,34 @@
+/* linux/arch/arm/plat-s3c2416/setup-sdhci-gpio.c
+ *
+ * Copyright 2010 Promwad Innovation Company
+ *     Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
+ *
+ * S3C2416 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
+ *
+ * Based on mach-s3c64xx/setup-sdhci-gpio.c
+ *
+ * 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/types.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/regs-gpio.h>
+#include <plat/gpio-cfg.h>
+
+void s3c2416_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
+{
+       s3c_gpio_cfgrange_nopull(S3C2410_GPE(5), 2 + width, S3C_GPIO_SFN(2));
+}
+
+void s3c2416_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
+{
+       s3c_gpio_cfgrange_nopull(S3C2410_GPL(0), width, S3C_GPIO_SFN(2));
+       s3c_gpio_cfgrange_nopull(S3C2410_GPL(8), 2, S3C_GPIO_SFN(2));
+}
diff --git a/arch/arm/mach-s3c2416/setup-sdhci.c b/arch/arm/mach-s3c2416/setup-sdhci.c
new file mode 100644 (file)
index 0000000..ed34fad
--- /dev/null
@@ -0,0 +1,61 @@
+/* linux/arch/arm/mach-s3c2416/setup-sdhci.c
+ *
+ * Copyright 2010 Promwad Innovation Company
+ *     Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
+ *
+ * S3C2416 - Helper functions for settign up SDHCI device(s) (HSMMC)
+ *
+ * Based on mach-s3c64xx/setup-sdhci.c
+ *
+ * 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/types.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+
+#include <plat/regs-sdhci.h>
+#include <plat/sdhci.h>
+
+/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
+
+char *s3c2416_hsmmc_clksrcs[4] = {
+       [0] = "hsmmc",
+       [1] = "hsmmc",
+       [2] = "hsmmc-if",
+       /* [3] = "48m", - note not successfully used yet */
+};
+
+void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev,
+                                 void __iomem *r,
+                                 struct mmc_ios *ios,
+                                 struct mmc_card *card)
+{
+       u32 ctrl2, ctrl3;
+
+       ctrl2 = __raw_readl(r + S3C_SDHCI_CONTROL2);
+       ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+       ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
+                 S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
+                 S3C_SDHCI_CTRL2_ENFBCLKRX |
+                 S3C_SDHCI_CTRL2_DFCNT_NONE |
+                 S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
+
+       if (ios->clock < 25 * 1000000)
+               ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 |
+                        S3C_SDHCI_CTRL3_FCSEL2 |
+                        S3C_SDHCI_CTRL3_FCSEL1 |
+                        S3C_SDHCI_CTRL3_FCSEL0);
+       else
+               ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
+
+       __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2);
+       __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3);
+}
index 85853f8c4c5dc9f1546ccd5318edd1784a47cd81..5a41a0b69eec818ac8e855119efb21d3319b9e46 100644 (file)
@@ -107,6 +107,8 @@ extern struct s3c_sdhci_platdata s3c_hsmmc3_def_platdata;
 
 /* Helper function availablity */
 
+extern void s3c2416_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
+extern void s3c2416_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
 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 s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
@@ -122,6 +124,39 @@ extern void s5pv310_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
 extern void s5pv310_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
 extern void s5pv310_setup_sdhci3_cfg_gpio(struct platform_device *, int w);
 
+/* S3C2416 SDHCI setup */
+
+#ifdef CONFIG_S3C2416_SETUP_SDHCI
+extern char *s3c2416_hsmmc_clksrcs[4];
+
+extern void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev,
+                                          void __iomem *r,
+                                          struct mmc_ios *ios,
+                                          struct mmc_card *card);
+
+static inline void s3c2416_default_sdhci0(void)
+{
+#ifdef CONFIG_S3C_DEV_HSMMC
+       s3c_hsmmc0_def_platdata.clocks = s3c2416_hsmmc_clksrcs;
+       s3c_hsmmc0_def_platdata.cfg_gpio = s3c2416_setup_sdhci0_cfg_gpio;
+       s3c_hsmmc0_def_platdata.cfg_card = s3c2416_setup_sdhci_cfg_card;
+#endif /* CONFIG_S3C_DEV_HSMMC */
+}
+
+static inline void s3c2416_default_sdhci1(void)
+{
+#ifdef CONFIG_S3C_DEV_HSMMC1
+       s3c_hsmmc1_def_platdata.clocks = s3c2416_hsmmc_clksrcs;
+       s3c_hsmmc1_def_platdata.cfg_gpio = s3c2416_setup_sdhci1_cfg_gpio;
+       s3c_hsmmc1_def_platdata.cfg_card = s3c2416_setup_sdhci_cfg_card;
+#endif /* CONFIG_S3C_DEV_HSMMC1 */
+}
+
+#else
+static inline void s3c2416_default_sdhci0(void) { }
+static inline void s3c2416_default_sdhci1(void) { }
+
+#endif /* CONFIG_S3C2416_SETUP_SDHCI */
 /* S3C64XX SDHCI setup */
 
 #ifdef CONFIG_S3C64XX_SETUP_SDHCI