diff options
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/board-rx51-peripherals.c | 43 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.h | 2 |
3 files changed, 52 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c index ab07ca2d408..4377a4cf36e 100644 --- a/arch/arm/mach-omap2/board-rx51-peripherals.c +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c @@ -209,6 +209,46 @@ static struct twl4030_madc_platform_data rx51_madc_data = { .irq_line = 1, }; +/* Enable input logic and pull all lines up when eMMC is on. */ +static struct omap_board_mux rx51_mmc2_on_mux[] = { + OMAP3_MUX(SDMMC2_CMD, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT0, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT1, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT2, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT3, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT4, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT5, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT6, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT7, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0), + { .reg_offset = OMAP_MUX_TERMINATOR }, +}; + +/* Disable input logic and pull all lines down when eMMC is off. */ +static struct omap_board_mux rx51_mmc2_off_mux[] = { + OMAP3_MUX(SDMMC2_CMD, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT0, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT1, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT2, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT3, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT4, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT5, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT6, OMAP_PULL_ENA | OMAP_MUX_MODE0), + OMAP3_MUX(SDMMC2_DAT7, OMAP_PULL_ENA | OMAP_MUX_MODE0), + { .reg_offset = OMAP_MUX_TERMINATOR }, +}; + +/* + * Current flows to eMMC when eMMC is off and the data lines are pulled up, + * so pull them down. N.B. we pull 8 lines because we are using 8 lines. + */ +static void rx51_mmc2_remux(struct device *dev, int slot, int power_on) +{ + if (power_on) + omap_mux_write_array(rx51_mmc2_on_mux); + else + omap_mux_write_array(rx51_mmc2_off_mux); +} + static struct omap2_hsmmc_info mmc[] __initdata = { { .name = "external", @@ -222,11 +262,12 @@ static struct omap2_hsmmc_info mmc[] __initdata = { { .name = "internal", .mmc = 2, - .wires = 8, + .wires = 8, /* See also rx51_mmc2_remux */ .gpio_cd = -EINVAL, .gpio_wp = -EINVAL, .nonremovable = true, .power_saving = true, + .remux = rx51_mmc2_remux, }, {} /* Terminator */ }; diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c index cc7e77f0926..4a05c3722d5 100644 --- a/arch/arm/mach-omap2/hsmmc.c +++ b/arch/arm/mach-omap2/hsmmc.c @@ -48,6 +48,9 @@ static void hsmmc1_before_set_reg(struct device *dev, int slot, u32 reg, prog_io; struct omap_mmc_platform_data *mmc = dev->platform_data; + if (mmc->slots[0].remux) + mmc->slots[0].remux(dev, slot, power_on); + /* * Assume we power both OMAP VMMC1 (for CMD, CLK, DAT0..3) and the * card with Vcc regulator (from twl4030 or whatever). OMAP has both @@ -121,6 +124,9 @@ static void hsmmc23_before_set_reg(struct device *dev, int slot, { struct omap_mmc_platform_data *mmc = dev->platform_data; + if (mmc->slots[0].remux) + mmc->slots[0].remux(dev, slot, power_on); + if (power_on) { /* Only MMC2 supports a CLKIN */ if (mmc->slots[0].internal_clock) { @@ -185,6 +191,8 @@ void __init omap2_hsmmc_init(struct omap2_hsmmc_info *controllers) mmc->slots[0].switch_pin = c->gpio_cd; mmc->slots[0].gpio_wp = c->gpio_wp; + mmc->slots[0].remux = c->remux; + if (c->cover_only) mmc->slots[0].cover = 1; diff --git a/arch/arm/mach-omap2/hsmmc.h b/arch/arm/mach-omap2/hsmmc.h index e946b5f79be..f641f592ffa 100644 --- a/arch/arm/mach-omap2/hsmmc.h +++ b/arch/arm/mach-omap2/hsmmc.h @@ -19,6 +19,8 @@ struct omap2_hsmmc_info { char *name; /* or NULL for default */ struct device *dev; /* returned: pointer to mmc adapter */ int ocr_mask; /* temporary HACK */ + /* Remux (pad configuation) when powering on/off */ + void (*remux)(struct device *dev, int slot, int power_on); }; #if defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) |