Rajeshwari Shinde wrote: > > From: rajeshwari.s <rajeshwari.s@xxxxxxxxxxx> > Maybe ' Rajeshwari Shinde' instead of rajeshwari.s? > Adds support for HSMMC for S5P64X0 platform, performs > setup for host controller and related GPIO. > > Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx> > Signed-off-by: Rajeshwari.S <rajeshwari.s@xxxxxxxxxxx> > --- > arch/arm/mach-s5p64x0/Kconfig | 31 ++++++++ > arch/arm/mach-s5p64x0/Makefile | 2 + > arch/arm/mach-s5p64x0/setup-sdhci-gpio.c | 121 > ++++++++++++++++++++++++++++++ > arch/arm/mach-s5p64x0/setup-sdhci.c | 54 +++++++++++++ > 4 files changed, 208 insertions(+), 0 deletions(-) > create mode 100644 arch/arm/mach-s5p64x0/setup-sdhci-gpio.c > create mode 100644 arch/arm/mach-s5p64x0/setup-sdhci.c > > diff --git a/arch/arm/mach-s5p64x0/Kconfig b/arch/arm/mach-s5p64x0/Kconfig > index 017af4c..ed823b0 100644 > --- a/arch/arm/mach-s5p64x0/Kconfig > +++ b/arch/arm/mach-s5p64x0/Kconfig > @@ -26,6 +26,17 @@ config S5P64X0_SETUP_I2C1 > help > Common setup code for i2c bus 1. > > +config S5P64X0_SETUP_SDHCI > + bool > + select S5P64X0_SETUP_SDHCI_GPIO > + help > + Internal helper functions for S5P64X0 based SDHCI systems > + > +config S5P64X0_SETUP_SDHCI_GPIO > + bool > + help > + Common setup code for SDHCI gpio. > + > # machine support > > config MACH_SMDK6440 > @@ -34,11 +45,15 @@ config MACH_SMDK6440 > select S3C_DEV_I2C1 > select S3C_DEV_RTC > select S3C_DEV_WDT > + select S3C_DEV_HSMMC > + select S3C_DEV_HSMMC1 > + select S3C_DEV_HSMMC2 > select S3C64XX_DEV_SPI > select SAMSUNG_DEV_ADC > select SAMSUNG_DEV_PWM > select SAMSUNG_DEV_TS > select S5P64X0_SETUP_I2C1 > + select S5P64X0_SETUP_SDHCI > help > Machine support for the Samsung SMDK6440 > > @@ -48,12 +63,28 @@ config MACH_SMDK6450 > select S3C_DEV_I2C1 > select S3C_DEV_RTC > select S3C_DEV_WDT > + select S3C_DEV_HSMMC > + select S3C_DEV_HSMMC1 > + select S3C_DEV_HSMMC2 > select S3C64XX_DEV_SPI > select SAMSUNG_DEV_ADC > select SAMSUNG_DEV_PWM > select SAMSUNG_DEV_TS > select S5P64X0_SETUP_I2C1 > + select S5P64X0_SETUP_SDHCI > help > Machine support for the Samsung SMDK6450 > > +menu "Use 8-bit SDHCI bus width" > + > +config S5P64X0_SD_CH1_8BIT > + bool "SDHCI Channel 1 (Slot 1)" > + depends on MACH_SMDK6450 || MACH_SMDK6440 Is this available on only SMDK6440 and SMDK6450? > + default n no need. > + help > + Support SDHCI Channel 1 8-bit bus. > + If selected, Channel 2 is disabled. > + > +endmenu > + > endif > diff --git a/arch/arm/mach-s5p64x0/Makefile b/arch/arm/mach-s5p64x0/Makefile > index ae6bf6f..60ff9b4 100644 > --- a/arch/arm/mach-s5p64x0/Makefile > +++ b/arch/arm/mach-s5p64x0/Makefile > @@ -28,3 +28,5 @@ obj-y += dev-audio.o > obj-$(CONFIG_S3C64XX_DEV_SPI) += dev-spi.o > > obj-$(CONFIG_S5P64X0_SETUP_I2C1) += setup-i2c1.o > +obj-$(CONFIG_S5P64X0_SETUP_SDHCI) += setup-sdhci.o > +obj-$(CONFIG_S5P64X0_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o > diff --git a/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c b/arch/arm/mach- > s5p64x0/setup-sdhci-gpio.c > new file mode 100644 > index 0000000..31541b3 > --- /dev/null > +++ b/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c > @@ -0,0 +1,121 @@ > +/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c > + * > + * Copyright (c) 2011 Samsung Electronics Co., Ltd. > + * http://www.samsung.com/ > + * > + * S5P64X0 - 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/platform_device.h> > +#include <linux/io.h> > + > +#include <mach/gpio.h> > +#include <mach/regs-gpio.h> > + > +#include <plat/gpio-cfg.h> > +#include <plat/sdhci.h> > + > + one empty line is enough. > +void s5p6440_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) > +{ > + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; > + > + /* Set all the necessary GPG pins to special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width, > S3C_GPIO_SFN(2)); > + > + /* Set GPG[6] pin to special-function 2 - MMC0 CDn */ > + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { > + s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP); > + s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2)); > + } > +} > + > +void s5p6440_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) > +{ > + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; > + > + /* Set GPH[0:1] pins to special-function 2 - CLK and CMD */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2)); > + > + switch (width) { > + case 8: > + /* Set data pins GPH[6:9] special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, > S3C_GPIO_SFN(2)); > + case 4: > + /* set data pins GPH[2:5] special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4, > S3C_GPIO_SFN(2)); > + default: > + break; > + } > + > + /* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */ > + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { > + s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP); > + s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3)); > + } > +} The setup of sdhci0 and sdhci1 are similar/same on s5p64440 and s5p6450 except gpio pin. Isn't there any way to handle it in each same function? > + > +void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) > +{ > + /* Set GPC[4:5] pins to special-function 3 - CLK and CMD */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3)); > + > + /* Set data pins GPH[6:9] pins to special-function 3 */ > + s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3)); > + > + /* No MMC2 CDn available */ > +} > + > + Same, one empty line is enough. > +/* S5P6450 SDHCI GPIO Settings */ > +void s5p6450_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) > +{ > + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; > + > + /* Set all the necessary GPG pins to special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width, > S3C_GPIO_SFN(2)); > + > + /* Set GPG[6] to special-function 2 : MMC0 CDn */ > + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { > + s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP); > + s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2)); > + } > +} > + > +void s5p6450_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) > +{ > + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; > + > + /* Set GPH[0:1] pins to special-function 2 - CLK and CMD */ > + s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2)); > + > + switch (width) { > + case 8: > + /* Set data pins GPH[6:9] to special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4, > S3C_GPIO_SFN(2)); > + case 4: > + /* Set data pins GPH[2:5] to special-function 2 */ > + s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4, > S3C_GPIO_SFN(2)); > + default: > + break; > + } > + > + /* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */ > + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { > + s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP); > + s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3)); > + } > +} > + > +void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) > +{ > + > + /* Set all the necessary GPG pins to special-function 3 */ > + s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, > S3C_GPIO_SFN(3)); > + > + /* No MMC2 CDn available */ > +} > diff --git a/arch/arm/mach-s5p64x0/setup-sdhci.c b/arch/arm/mach-s5p64x0/setup- > sdhci.c > new file mode 100644 > index 0000000..729b824 > --- /dev/null > +++ b/arch/arm/mach-s5p64x0/setup-sdhci.c > @@ -0,0 +1,54 @@ > +/* linux/arch/arm/mach-s5p64x0/setup-sdhci.c > + * > + * Copyright (c) 2011 Samsung Electronics Co., Ltd. > + * http://www.samsung.com/ > + * > + * S5P64X0 - 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. > +*/ > + > +#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 *s5p64x0_hsmmc_clksrcs[4] = { > + [0] = NULL, > + [1] = NULL, > + [2] = "sclk_mmc", /* mmc_bus */ > + [3] = NULL, > +}; > + > +void s5p64x0_setup_sdhci_cfg_card(struct platform_device *dev, > + void __iomem *r, > + struct mmc_ios *ios, > + struct mmc_card *card) > +{ > + u32 ctrl2 = 0, ctrl3 = 0; > + > + /* don't need to alter anything acording to card-type */ > + __raw_writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, > + r + S3C64XX_SDHCI_CONTROL4); > + > + 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_DFCNT_NONE | > + S3C_SDHCI_CTRL2_ENCLKOUTHOLD); > + > + __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2); > + __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3); > +} > -- > 1.7.0.4 Thanks. Best regards, Kgene. -- Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer, SW Solution Development Team, Samsung Electronics Co., Ltd. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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