[PATCH 09/18] MMC: OMAP: Power functions modified to MMC multislot support

Carlos Aguiar
2008-03-26T20:16:32Z

From: Juha Yrjola <juha.yrjola@solidboot.com>

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 <juha.yrjola@solidboot.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/mmc/host/omap.c | 88 ++++++++++++++++++++---------------------------
1 files changed, 37 insertions(+), 51 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index e4e7537..dbf831f 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 = {
-- 1.5.3.GIT