From e08016d0f4fcfe038a402071ada3073c6ca8d62d Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Tue, 1 Mar 2011 13:12:55 -0800 Subject: [PATCH] omap: mmc: split out init for 2420 The MMC controller on the OMAP2420 is different from those on the OMAP2430, OMAP3 and OMAP4 families - all of the latter are identical. The one on the OMAP2420 is closer to that on OMAP1 chips. Currently, the n8x0 is the only OMAP2420 platform supported in mainline which registers the MMC controller. Upcoming changes to register the controllers using hwmod data are potentially invasive. To reduce the risk, separate out the 2420 controller registration from the common init function and update its only user. Also seperating out mux settings for OMAP2420. Signed-off-by: Anand Gadiyar Signed-off-by: Kishore Kadiyala Cc: Tony Lindgren Cc: Madhusudhan Chikkature Cc: Chris Ball Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-n8x0.c | 2 +- arch/arm/mach-omap2/devices.c | 88 +++++++++++++++++---------- arch/arm/plat-omap/include/plat/mmc.h | 4 ++ 3 files changed, 61 insertions(+), 33 deletions(-) diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index b36cbd21e2d0..e710cd9e079b 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -536,7 +536,7 @@ static void __init n8x0_mmc_init(void) } mmc_data[0] = &mmc1_data; - omap2_init_mmc(mmc_data, OMAP24XX_NR_MMC); + omap242x_init_mmc(mmc_data); } #else diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index 9ee876fd367a..100bb425e9c3 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -650,11 +650,10 @@ err1: static inline void omap_hsmmc_reset(void) {} #endif -#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \ - defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) +#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) -static inline void omap2_mmc_mux(struct omap_mmc_platform_data *mmc_controller, - int controller_nr) +static inline void omap242x_mmc_mux(struct omap_mmc_platform_data + *mmc_controller) { if ((mmc_controller->slots[0].switch_pin > 0) && \ (mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES)) @@ -665,33 +664,61 @@ static inline void omap2_mmc_mux(struct omap_mmc_platform_data *mmc_controller, omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp, OMAP_PIN_INPUT_PULLUP); - if (cpu_is_omap2420() && controller_nr == 0) { - omap_mux_init_signal("sdmmc_cmd", 0); - omap_mux_init_signal("sdmmc_clki", 0); - omap_mux_init_signal("sdmmc_clko", 0); - omap_mux_init_signal("sdmmc_dat0", 0); - omap_mux_init_signal("sdmmc_dat_dir0", 0); - omap_mux_init_signal("sdmmc_cmd_dir", 0); - if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) { - omap_mux_init_signal("sdmmc_dat1", 0); - omap_mux_init_signal("sdmmc_dat2", 0); - omap_mux_init_signal("sdmmc_dat3", 0); - omap_mux_init_signal("sdmmc_dat_dir1", 0); - omap_mux_init_signal("sdmmc_dat_dir2", 0); - omap_mux_init_signal("sdmmc_dat_dir3", 0); - } + omap_mux_init_signal("sdmmc_cmd", 0); + omap_mux_init_signal("sdmmc_clki", 0); + omap_mux_init_signal("sdmmc_clko", 0); + omap_mux_init_signal("sdmmc_dat0", 0); + omap_mux_init_signal("sdmmc_dat_dir0", 0); + omap_mux_init_signal("sdmmc_cmd_dir", 0); + if (mmc_controller->slots[0].caps & MMC_CAP_4_BIT_DATA) { + omap_mux_init_signal("sdmmc_dat1", 0); + omap_mux_init_signal("sdmmc_dat2", 0); + omap_mux_init_signal("sdmmc_dat3", 0); + omap_mux_init_signal("sdmmc_dat_dir1", 0); + omap_mux_init_signal("sdmmc_dat_dir2", 0); + omap_mux_init_signal("sdmmc_dat_dir3", 0); + } - /* - * Use internal loop-back in MMC/SDIO Module Input Clock - * selection - */ - if (mmc_controller->slots[0].internal_clock) { - u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); - v |= (1 << 24); - omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); - } + /* + * Use internal loop-back in MMC/SDIO Module Input Clock + * selection + */ + if (mmc_controller->slots[0].internal_clock) { + u32 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); + v |= (1 << 24); + omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); + } +} + +void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data) +{ + char *name = "mmci-omap"; + + if (!mmc_data[0]) { + pr_err("%s fails: Incomplete platform data\n", __func__); + return; } + omap242x_mmc_mux(mmc_data[0]); + omap_mmc_add(name, 0, OMAP2_MMC1_BASE, OMAP2420_MMC_SIZE, + INT_24XX_MMC_IRQ, mmc_data[0]); +} + +#endif + +#if defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) + +static inline void omap2_mmc_mux(struct omap_mmc_platform_data *mmc_controller, + int controller_nr) +{ + if ((mmc_controller->slots[0].switch_pin > 0) && \ + (mmc_controller->slots[0].switch_pin < OMAP_MAX_GPIO_LINES)) + omap_mux_init_gpio(mmc_controller->slots[0].switch_pin, + OMAP_PIN_INPUT_PULLUP); + if ((mmc_controller->slots[0].gpio_wp > 0) && \ + (mmc_controller->slots[0].gpio_wp < OMAP_MAX_GPIO_LINES)) + omap_mux_init_gpio(mmc_controller->slots[0].gpio_wp, + OMAP_PIN_INPUT_PULLUP); if (cpu_is_omap34xx()) { if (controller_nr == 0) { omap_mux_init_signal("sdmmc1_clk", @@ -808,10 +835,7 @@ void __init omap2_init_mmc(struct omap_mmc_platform_data **mmc_data, continue; } - if (cpu_is_omap2420()) { - size = OMAP2420_MMC_SIZE; - name = "mmci-omap"; - } else if (cpu_is_omap44xx()) { + if (cpu_is_omap44xx()) { if (i < 3) irq += OMAP44XX_IRQ_GIC_START; size = OMAP4_HSMMC_SIZE; diff --git a/arch/arm/plat-omap/include/plat/mmc.h b/arch/arm/plat-omap/include/plat/mmc.h index f57f36abb07e..e5de5d452b3e 100644 --- a/arch/arm/plat-omap/include/plat/mmc.h +++ b/arch/arm/plat-omap/include/plat/mmc.h @@ -159,6 +159,7 @@ extern void omap_mmc_notify_cover_event(struct device *dev, int slot, defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, int nr_controllers); +void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data); void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data, int nr_controllers); int omap_mmc_add(const char *name, int id, unsigned long base, @@ -169,6 +170,9 @@ static inline void omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, int nr_controllers) { } +static inline void omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data) +{ +} static inline void omap2_init_mmc(struct omap_mmc_platform_data **mmc_data, int nr_controllers) { -- 2.20.1