On Thu, Nov 12, 2009 at 09:22:00AM +0100, Marek Szyprowski wrote:
> From: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
>
> From: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
>
> Samsung S5PC100 has 3 SDHCI controllers compatible with the one known from
> previous SoCs series. Add required platform setup and support code that
> the devices can be used with sdhci-s3c driver.
>
> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> arch/arm/mach-s5pc100/Kconfig | 6 ++
> arch/arm/mach-s5pc100/Makefile | 4 ++
> arch/arm/mach-s5pc100/cpu.c | 3 +
> arch/arm/mach-s5pc100/setup-sdhci.c | 63 ++++++++++++++++++++++
> arch/arm/plat-s3c/Kconfig | 5 ++
> arch/arm/plat-s3c/Makefile | 1 +
> arch/arm/plat-s3c/dev-hsmmc2.c | 65 ++++++++++++++++++++++
> arch/arm/plat-s3c/include/plat/sdhci.h | 55 +++++++++++++++++++
> arch/arm/plat-s5pc1xx/Kconfig | 6 ++
> arch/arm/plat-s5pc1xx/Makefile | 1 +
> arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c | 86 ++++++++++++++++++++++++++++++
> 11 files changed, 295 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/mach-s5pc100/setup-sdhci.c
> create mode 100644 arch/arm/plat-s3c/dev-hsmmc2.c
> create mode 100644 arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
>
> diff --git a/arch/arm/mach-s5pc100/Kconfig b/arch/arm/mach-s5pc100/Kconfig
> index 36e7e00..21b1821 100644
> --- a/arch/arm/mach-s5pc100/Kconfig
> +++ b/arch/arm/mach-s5pc100/Kconfig
> @@ -14,6 +14,12 @@ config CPU_S5PC100
> help
> Enable S5PC100 CPU support
>
> +config S5PC100_SETUP_SDHCI
> + bool
> + select S5PC1XX_SETUP_SDHCI_GPIO
> + help
> + Internal helper functions for S5PC100 based SDHCI systems
> +
> config MACH_SMDKC100
> bool "SMDKC100"
> select CPU_S5PC100
> diff --git a/arch/arm/mach-s5pc100/Makefile b/arch/arm/mach-s5pc100/Makefile
> index afc89b3..809ff10 100644
> --- a/arch/arm/mach-s5pc100/Makefile
> +++ b/arch/arm/mach-s5pc100/Makefile
> @@ -13,5 +13,9 @@ obj- :=
>
> obj-$(CONFIG_CPU_S5PC100) += cpu.o
>
> +# Helper and device support
> +
> +obj-$(CONFIG_S5PC100_SETUP_SDHCI) += setup-sdhci.o
> +
> # machine support
> obj-$(CONFIG_MACH_SMDKC100) += mach-smdkc100.o
> diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c
> index 1319e3d..d79e757 100644
> --- a/arch/arm/mach-s5pc100/cpu.c
> +++ b/arch/arm/mach-s5pc100/cpu.c
> @@ -75,6 +75,9 @@ void __init s5pc100_map_io(void)
> iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
>
> /* initialise device information early */
> + s5pc100_default_sdhci0();
> + s5pc100_default_sdhci1();
> + s5pc100_default_sdhci2();
>
> /* the i2c devices are directly compatible with s3c2440 */
> s3c_i2c0_setname("s3c2440-i2c");
> diff --git a/arch/arm/mach-s5pc100/setup-sdhci.c b/arch/arm/mach-s5pc100/setup-sdhci.c
> new file mode 100644
> index 0000000..634bac3
> --- /dev/null
> +++ b/arch/arm/mach-s5pc100/setup-sdhci.c
> @@ -0,0 +1,63 @@
> +/* linux/arch/arm/mach-s5pc100/setup-sdhci.c
> + *
> + * Copyright 2008 Samsung Electronics
> + *
> + * S5PC100 - Helper functions for settign up SDHCI device(s) (HSMMC)
> + *
> + * 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.
> +*/
Again an attribution to where the original for this came from would have
been nice, however it isn't really a barrier to applying this. It can
always be fixed later.
> +#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 *s5pc100_hsmmc_clksrcs[4] = {
> + [0] = "hsmmc",
> + [1] = "hsmmc",
> + /* [2] = "mmc_bus", not yet succesfuuly used yet */
> + /* [3] = "48m", - note not succesfully used yet */
> +};
> +
> +
> +void s5pc100_setup_sdhci0_cfg_card(struct platform_device *dev,
> + void __iomem *r,
> + struct mmc_ios *ios,
> + struct mmc_card *card)
> +{
> + u32 ctrl2, ctrl3;
> +
> + /* don't need to alter anything acording to card-type */
> +
> + writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4);
> +
> + ctrl2 = 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);
> +
> + writel(ctrl2, r + S3C_SDHCI_CONTROL2);
> + writel(ctrl3, r + S3C_SDHCI_CONTROL3);
> +}
> diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
> index f155a84..e139a72 100644
> --- a/arch/arm/plat-s3c/Kconfig
> +++ b/arch/arm/plat-s3c/Kconfig
> @@ -184,6 +184,11 @@ 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..082e55a
> --- /dev/null
> +++ b/arch/arm/plat-s3c/dev-hsmmc2.c
> @@ -0,0 +1,65 @@
> +/* linux/arch/arm/plat-s3c/dev-hsmmc2.c
> + *
> + * Copyright (c) 2009 Samsung 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>
> +
> +#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..c71d078 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 +65,15 @@ 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 s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
> +extern void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
> +extern void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
>
> /* S3C6400 SDHCI setup */
>
> @@ -145,4 +150,54 @@ static inline void s3c6410_default_sdhci0(void) { }
> static inline void s3c6410_default_sdhci1(void) { }
> #endif /* CONFIG_S3C6410_SETUP_SDHCI */
>
> +/* S5PC100 SDHCI setup */
> +
> +#ifdef CONFIG_S5PC100_SETUP_SDHCI
> +extern char *s5pc100_hsmmc_clksrcs[4];
> +
> +extern void s5pc100_setup_sdhci0_cfg_card(struct platform_device *dev,
> + void __iomem *r,
> + struct mmc_ios *ios,
> + struct mmc_card *card);
> +
> +#ifdef CONFIG_S3C_DEV_HSMMC
> +static inline void s5pc100_default_sdhci0(void)
> +{
> + s3c_hsmmc0_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
> + s3c_hsmmc0_def_platdata.cfg_gpio = s5pc100_setup_sdhci0_cfg_gpio;
> + s3c_hsmmc0_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
> +}
> +#else
> +static inline void s5pc100_default_sdhci0(void) { }
> +#endif /* CONFIG_S3C_DEV_HSMMC */
> +
> +#ifdef CONFIG_S3C_DEV_HSMMC1
> +static inline void s5pc100_default_sdhci1(void)
> +{
> + s3c_hsmmc1_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
> + s3c_hsmmc1_def_platdata.cfg_gpio = s5pc100_setup_sdhci1_cfg_gpio;
> + s3c_hsmmc1_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
> +}
> +#else
> +static inline void s5pc100_default_sdhci1(void) { }
> +#endif /* CONFIG_S3C_DEV_HSMMC1 */
> +
> +#ifdef CONFIG_S3C_DEV_HSMMC2
> +static inline void s5pc100_default_sdhci2(void)
> +{
> + s3c_hsmmc2_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
> + s3c_hsmmc2_def_platdata.cfg_gpio = s5pc100_setup_sdhci2_cfg_gpio;
> + s3c_hsmmc2_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
> +}
> +#else
> +static inline void s5pc100_default_sdhci2(void) { }
> +#endif /* CONFIG_S3C_DEV_HSMMC1 */
> +
> +
> +#else
> +static inline void s5pc100_default_sdhci0(void) { }
> +static inline void s5pc100_default_sdhci1(void) { }
> +static inline void s5pc100_default_sdhci2(void) { }
> +#endif /* CONFIG_S5PC100_SETUP_SDHCI */
> +
> #endif /* __PLAT_S3C_SDHCI_H */
> diff --git a/arch/arm/plat-s5pc1xx/Kconfig b/arch/arm/plat-s5pc1xx/Kconfig
> index 1fc25b9..1608e62 100644
> --- a/arch/arm/plat-s5pc1xx/Kconfig
> +++ b/arch/arm/plat-s5pc1xx/Kconfig
> @@ -55,4 +55,10 @@ config S5PC1XX_SETUP_I2C1
> bool
> help
> Common setup code for i2c bus 1.
> +
> +config S5PC1XX_SETUP_SDHCI_GPIO
> + bool
> + help
> + Common setup code for SDHCI gpio.
> +
> endif
> diff --git a/arch/arm/plat-s5pc1xx/Makefile b/arch/arm/plat-s5pc1xx/Makefile
> index 40ee957..278f268 100644
> --- a/arch/arm/plat-s5pc1xx/Makefile
> +++ b/arch/arm/plat-s5pc1xx/Makefile
> @@ -28,3 +28,4 @@ obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o
> obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
> obj-$(CONFIG_S5PC1XX_SETUP_I2C0) += setup-i2c0.o
> obj-$(CONFIG_S5PC1XX_SETUP_I2C1) += setup-i2c1.o
> +obj-$(CONFIG_S5PC1XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
> diff --git a/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c b/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
> new file mode 100644
> index 0000000..3577619
> --- /dev/null
> +++ b/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
> @@ -0,0 +1,86 @@
> +/* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
> + *
> + * Copyright 2009 Samsung Eletronics
> + *
> + * S5PC1XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
> + *
> + * 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/host.h>
> +#include <linux/mmc/card.h>
> +
> +#include <mach/gpio.h>
> +#include <plat/gpio-cfg.h>
> +#include <plat/regs-sdhci.h>
> +
> +void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
> +{
> + unsigned int gpio;
> + unsigned int end;
> + unsigned int num;
> +
> + num = width;
> + /* In case of 8 width, we should decrease the 2 */
> + if (width == 8)
> + num = width - 2;
> +
> + end = S5PC100_GPG0(2 + num);
> +
> + /* Set all the necessary GPG0/GPG1 pins to special-function 0 */
> + for (gpio = S5PC100_GPG0(0); gpio < end; gpio++) {
> + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
> + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> + }
> +
> + if (width == 8) {
> + for (gpio = S5PC100_GPG1(0); gpio <= S5PC100_GPG1(1); gpio++) {
> + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
> + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> + }
> + }
> +
> + s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
> + s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
> +}
> +
> +void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
> +{
> + unsigned int gpio;
> + unsigned int end;
> +
> + end = S5PC100_GPG2(2 + width);
> +
> + /* Set all the necessary GPG2 pins to special-function 2 */
> + for (gpio = S5PC100_GPG2(0); gpio < end; gpio++) {
> + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
> + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> + }
> +
> + s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
> + s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
> +}
> +
> +void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
> +{
> + unsigned int gpio;
> + unsigned int end;
> +
> + end = S5PC100_GPG3(2 + width);
> +
> + /* Set all the necessary GPG3 pins to special-function 2 */
> + for (gpio = S5PC100_GPG3(0); gpio < end; gpio++) {
> + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
> + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> + }
> +
> + s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
> + s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
> +}
> --
> 1.6.5
>
>
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