#include <common.h>
#include <mmc.h>
+#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clk_rst.h>
#include <asm/arch/clock.h>
return 0;
}
-static int tegra2_mmc_initialize(int dev_index, int bus_width)
+int tegra2_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
{
struct mmc_host *host;
+ char gpusage[12]; /* "SD/MMCn PWR" or "SD/MMCn CD" */
struct mmc *mmc;
- debug(" mmc_initialize called\n");
+ debug(" tegra2_mmc_init: index %d, bus width %d "
+ "pwr_gpio %d cd_gpio %d\n",
+ dev_index, bus_width, pwr_gpio, cd_gpio);
host = &mmc_host[dev_index];
host->clock = 0;
+ host->pwr_gpio = pwr_gpio;
+ host->cd_gpio = cd_gpio;
tegra2_get_setup(host, dev_index);
clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000);
+ if (host->pwr_gpio >= 0) {
+ sprintf(gpusage, "SD/MMC%d PWR", dev_index);
+ gpio_request(host->pwr_gpio, gpusage);
+ gpio_direction_output(host->pwr_gpio, 1);
+ }
+
+ if (host->cd_gpio >= 0) {
+ sprintf(gpusage, "SD/MMC%d CD", dev_index);
+ gpio_request(host->cd_gpio, gpusage);
+ gpio_direction_input(host->cd_gpio);
+ }
+
mmc = &mmc_dev[dev_index];
sprintf(mmc->name, "Tegra2 SD/MMC");
return 0;
}
-int tegra2_mmc_init(int dev_index, int bus_width)
+/* this is a weak define that we are overriding */
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
{
- debug(" tegra2_mmc_init: index %d, bus width %d\n",
- dev_index, bus_width);
- return tegra2_mmc_initialize(dev_index, bus_width);
+ struct mmc_host *host = (struct mmc_host *)mmc->priv;
+
+ debug("board_mmc_getcd called\n");
+
+ *cd = 1; /* Assume card is inserted, or eMMC */
+
+ if (IS_SD(mmc)) {
+ if (host->cd_gpio >= 0) {
+ if (gpio_get_value(host->cd_gpio))
+ *cd = 0;
+ }
+ }
+
+ return 0;
}