From 65b5b6e51bdeab1934a147aec41ecea82d3cc31d Mon Sep 17 00:00:00 2001 From: Juha Yrjola Date: Wed, 26 Mar 2008 16:09:22 -0400 Subject: [PATCH] MMC: OMAP: Power functions modified to MMC multislot support Modifications at power functions to MMC multislot support. This patch also move board-specific code out of MMC OMAP driver. Signed-off-by: Juha Yrjola Signed-off-by: Carlos Eduardo Aguiar Signed-off-by: Tony Lindgren Signed-off-by: Pierre Ossman --- drivers/mmc/host/omap.c | 88 +++++++++++++++++------------------------ 1 file changed, 37 insertions(+), 51 deletions(-) diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 0d3cd3c23f..c80cd58cfa 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -983,52 +983,27 @@ static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) mmc_omap_start_request(host, req); } -static void innovator_fpga_socket_power(int on) +static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on, + int vdd) { -#if defined(CONFIG_MACH_OMAP_INNOVATOR) && defined(CONFIG_ARCH_OMAP15XX) - if (on) { - fpga_write(fpga_read(OMAP1510_FPGA_POWER) | (1 << 3), - OMAP1510_FPGA_POWER); - } else { - fpga_write(fpga_read(OMAP1510_FPGA_POWER) & ~(1 << 3), - OMAP1510_FPGA_POWER); - } -#endif -} + struct mmc_omap_host *host; -/* - * Turn the socket power on/off. Innovator uses FPGA, most boards - * probably use GPIO. - */ -static void mmc_omap_power(struct mmc_omap_host *host, int on) -{ - if (on) { - if (machine_is_omap_innovator()) - innovator_fpga_socket_power(1); - else if (machine_is_omap_h2()) - tps65010_set_gpio_out_value(GPIO3, HIGH); - else if (machine_is_omap_h3()) - /* GPIO 4 of TPS65010 sends SD_EN signal */ - tps65010_set_gpio_out_value(GPIO4, HIGH); - else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host, CON); - OMAP_MMC_WRITE(host, CON, reg | (1 << 11)); - } else - if (host->power_pin >= 0) - omap_set_gpio_dataout(host->power_pin, 1); - } else { - if (machine_is_omap_innovator()) - innovator_fpga_socket_power(0); - else if (machine_is_omap_h2()) - tps65010_set_gpio_out_value(GPIO3, LOW); - else if (machine_is_omap_h3()) - tps65010_set_gpio_out_value(GPIO4, LOW); - else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host, CON); - OMAP_MMC_WRITE(host, CON, reg & ~(1 << 11)); - } else - if (host->power_pin >= 0) - omap_set_gpio_dataout(host->power_pin, 0); + host = slot->host; + + if (slot->pdata->set_power != NULL) + slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on, + vdd); + + if (cpu_is_omap24xx()) { + u16 w; + + if (power_on) { + w = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, w | (1 << 11)); + } else { + w = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, w & ~(1 << 11)); + } } } @@ -1067,23 +1042,31 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) int i, dsor; dsor = mmc_omap_calc_divisor(mmc, ios); - host->bus_mode = ios->bus_mode; - host->hw_bus_mode = host->bus_mode; + + mmc_omap_select_slot(slot, 0); + + if (ios->vdd != slot->vdd) + slot->vdd = ios->vdd; switch (ios->power_mode) { case MMC_POWER_OFF: - mmc_omap_power(host, 0); + mmc_omap_set_power(slot, 0, ios->vdd); break; case MMC_POWER_UP: /* Cannot touch dsor yet, just power up MMC */ - mmc_omap_power(host, 1); - return; + mmc_omap_set_power(slot, 1, ios->vdd); + goto exit; case MMC_POWER_ON: dsor |= 1 << 11; break; } - clk_enable(host->fclk); + if (slot->bus_mode != ios->bus_mode) { + if (slot->pdata->set_bus_mode != NULL) + slot->pdata->set_bus_mode(mmc_dev(mmc), slot->id, + ios->bus_mode); + slot->bus_mode = ios->bus_mode; + } /* On insanely high arm_per frequencies something sometimes * goes somehow out of sync, and the POW bit is not being set, @@ -1091,6 +1074,7 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * Writing to the CON register twice seems to do the trick. */ for (i = 0; i < 2; i++) OMAP_MMC_WRITE(host, CON, dsor); + slot->saved_con = dsor; if (ios->power_mode == MMC_POWER_ON) { /* Send clock cycles, poll completion */ OMAP_MMC_WRITE(host, IE, 0); @@ -1099,7 +1083,9 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) while ((OMAP_MMC_READ(host, STAT) & 1) == 0); OMAP_MMC_WRITE(host, STAT, 1); } - clk_disable(host->fclk); + +exit: + mmc_omap_release_slot(slot); } static const struct mmc_host_ops mmc_omap_ops = { -- 2.39.5