[1/5] ARM: S5PV310: Add HSMMC support and SDHCI configuration

Message ID	1284626223-18944-2-git-send-email-jeongbae.seo@samsung.com (mailing list archive)
State	Awaiting Upstream, archived
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o8G8rlUu001892 for <patchwork-linux-mmc@patchwork.kernel.org>; Thu, 16 Sep 2010 08:53:50 GMT From: Jeongbae Seo <jeongbae.seo@samsung.com> To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mmc@vger.kernel.org Cc: ben-linux@fluff.org, kgene.kim@samsung.com, akpm@linux-foundation.org, Hyuk Lee <hyuk1.lee@samsung.com>, Jeongbae Seo <jeongbae.seo@samsung.com> Subject: [PATCH 1/5] ARM: S5PV310: Add HSMMC support and SDHCI configuration Date: Thu, 16 Sep 2010 17:36:59 +0900 Message-Id: <1284626223-18944-2-git-send-email-jeongbae.seo@samsung.com> In-Reply-To: <1284626223-18944-1-git-send-email-jeongbae.seo@samsung.com> References: <1284626223-18944-1-git-send-email-jeongbae.seo@samsung.com> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/arm/mach-s5pv310/Kconfig b/arch/arm/mach-s5pv310/Kconfig index 9ac29fe..6a07968 100644 --- a/arch/arm/mach-s5pv310/Kconfig +++ b/arch/arm/mach-s5pv310/Kconfig @@ -25,6 +25,17 @@ config S5PV310_SETUP_I2C2 help Common setup code for i2c bus 2. +config S5PV310_SETUP_SDHCI + bool + select S5PV310_SETUP_SDHCI_GPIO + help + Internal helper functions for S5PV310 based SDHCI systems. + +config S5PV310_SETUP_SDHCI_GPIO + bool + help + Common setup code for SDHCI gpio. + # machine support menu "S5PC210 Machines" @@ -33,6 +44,11 @@ config MACH_SMDKC210 bool "SMDKC210" select CPU_S5PV310 select ARCH_SPARSEMEM_ENABLE + select S3C_DEV_HSMMC + select S3C_DEV_HSMMC1 + select S3C_DEV_HSMMC2 + select S3C_DEV_HSMMC3 + select S5PV310_SETUP_SDHCI help Machine support for Samsung SMDKC210 S5PC210(MCP) is one of package option of S5PV310 @@ -53,9 +69,32 @@ config MACH_SMDKV310 bool "SMDKV310" select CPU_S5PV310 select ARCH_SPARSEMEM_ENABLE + select S3C_DEV_HSMMC + select S3C_DEV_HSMMC1 + select S3C_DEV_HSMMC2 + select S3C_DEV_HSMMC3 + select S5PV310_SETUP_SDHCI help Machine support for Samsung SMDKV310 endmenu +comment "Configuration for HSMMC bus width" + +menu "Use 8-bit bus width" + +config S5PV310_SDHCI_CH0_8BIT + bool "Channel 0 with 8-bit bus" + help + Support HSMMC Channel 0 8-bit bus. + If selected, Channel 1 is disabled. + +config S5PV310_SDHCI_CH2_8BIT + bool "Channel 2 with 8-bit bus" + help + Support HSMMC Channel 2 8-bit bus. + If selected, Channel 3 is disabled. + +endmenu + endif diff --git a/arch/arm/mach-s5pv310/Makefile b/arch/arm/mach-s5pv310/Makefile index aefb14f..c89b6b0 100644 --- a/arch/arm/mach-s5pv310/Makefile +++ b/arch/arm/mach-s5pv310/Makefile @@ -29,3 +29,5 @@ obj-$(CONFIG_MACH_UNIVERSAL_C210) += mach-universal_c210.o obj-$(CONFIG_S5PV310_SETUP_I2C1) += setup-i2c1.o obj-$(CONFIG_S5PV310_SETUP_I2C2) += setup-i2c2.o +obj-$(CONFIG_S5PV310_SETUP_SDHCI) += setup-sdhci.o +obj-$(CONFIG_S5PV310_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o diff --git a/arch/arm/mach-s5pv310/setup-sdhci-gpio.c b/arch/arm/mach-s5pv310/setup-sdhci-gpio.c new file mode 100644 index 0000000..8db8c81 --- /dev/null +++ b/arch/arm/mach-s5pv310/setup-sdhci-gpio.c @@ -0,0 +1,156 @@ +/* linux/arch/arm/mach-s5pv310/setup-sdhci-gpio.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - 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/gpio.h> +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> + +#include <plat/gpio-cfg.h> +#include <plat/regs-sdhci.h> +#include <plat/sdhci.h> + +void s5pv310_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK0[0:1] pins to special-function 2 */ + for (gpio = S5PV310_GPK0(0); gpio < S5PV310_GPK0(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + switch (width) { + case 8: + for (gpio = S5PV310_GPK1(3); gpio <= S5PV310_GPK1(6); gpio++) { + /* Data pin GPK1[3:6] to special-funtion 3 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + case 4: + for (gpio = S5PV310_GPK0(3); gpio <= S5PV310_GPK0(6); gpio++) { + /* Data pin GPK0[3:6] to special-funtion 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + default: + break; + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(S5PV310_GPK0(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(S5PV310_GPK0(2), S3C_GPIO_PULL_UP); + } +} + +void s5pv310_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK1[0:1] pins to special-function 2 */ + for (gpio = S5PV310_GPK1(0); gpio < S5PV310_GPK1(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + for (gpio = S5PV310_GPK1(3); gpio <= S5PV310_GPK1(6); gpio++) { + /* Data pin GPK1[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(S5PV310_GPK1(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(S5PV310_GPK1(2), S3C_GPIO_PULL_UP); + } +} + +void s5pv310_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK2[0:1] pins to special-function 2 */ + for (gpio = S5PV310_GPK2(0); gpio < S5PV310_GPK2(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + switch (width) { + case 8: + for (gpio = S5PV310_GPK3(3); gpio <= S5PV310_GPK3(6); gpio++) { + /* Data pin GPK3[3:6] to special-function 3 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + case 4: + for (gpio = S5PV310_GPK2(3); gpio <= S5PV310_GPK2(6); gpio++) { + /* Data pin GPK2[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + default: + break; + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(S5PV310_GPK2(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(S5PV310_GPK2(2), S3C_GPIO_PULL_UP); + } +} + +void s5pv310_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK3[0:1] pins to special-function 2 */ + for (gpio = S5PV310_GPK3(0); gpio < S5PV310_GPK3(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + for (gpio = S5PV310_GPK3(3); gpio <= S5PV310_GPK3(6); gpio++) { + /* Data pin GPK3[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + + /* Setup Drive Strength */ + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(S5PV310_GPK3(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(S5PV310_GPK3(2), S3C_GPIO_PULL_UP); + } +} diff --git a/arch/arm/mach-s5pv310/setup-sdhci.c b/arch/arm/mach-s5pv310/setup-sdhci.c new file mode 100644 index 0000000..db8358f --- /dev/null +++ b/arch/arm/mach-s5pv310/setup-sdhci.c @@ -0,0 +1,69 @@ +/* linux/arch/arm/mach-s5pv310/setup-sdhci.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV310 - 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> + +/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ + +char *s5pv310_hsmmc_clksrcs[4] = { + [0] = NULL, + [1] = NULL, + [2] = "sclk_mmc", /* mmc_bus */ + [3] = NULL, +}; + +void s5pv310_setup_sdhci_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 */ + + ctrl2 = readl(r + S3C_SDHCI_CONTROL2); + + /* select base clock source to HCLK */ + + ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; + + /* + * clear async mode, enable conflict mask, rx feedback ctrl, SD + * clk hold and no use debounce count + */ + + ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR | + S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK | + S3C_SDHCI_CTRL2_ENFBCLKRX | + S3C_SDHCI_CTRL2_DFCNT_NONE | + S3C_SDHCI_CTRL2_ENCLKOUTHOLD); + + /* Tx and Rx feedback clock delay control */ + + 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); +}

[1/5] ARM: S5PV310: Add HSMMC support and SDHCI configuration

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