From: rajeshwari.s <rajeshwari.s@xxxxxxxxxxx> 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 + default n + 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> + + +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)); + } +} + +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 */ +} + + +/* 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 -- 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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