* (C) Copyright 2009 SAMSUNG Electronics
- * Portions Copyright 2011-2013 NVIDIA Corporation
+ * Portions Copyright 2011-2015 NVIDIA Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <bouncebuf.h>
#include <common.h>
+#include <dm/device.h>
+#include <errno.h>
#include <asm/gpio.h>
#include <asm/io.h>
+#ifndef CONFIG_TEGRA186
#include <asm/arch/clock.h>
#include <asm/arch-tegra/clk_rst.h>
+#endif
+#include <asm/arch-tegra/mmc.h>
#include <asm/arch-tegra/tegra_mmc.h>
#include <mmc.h>
+/*
+ * FIXME: TODO: This driver contains a number of ifdef CONFIG_TEGRA186 that
+ * should not be present. These are needed because newer Tegra SoCs support
+ * only the standard clock/reset APIs, whereas older Tegra SoCs support only
+ * a custom Tegra-specific API. ASAP the older Tegra SoCs' code should be
+ * fixed to implement the standard APIs, and all drivers converted to solely
+ * use the new standard APIs, with no ifdefs.
+ */
+
DECLARE_GLOBAL_DATA_PTR;
struct mmc_host mmc_host[CONFIG_SYS_MMC_MAX_DEVICE];
-#ifndef CONFIG_OF_CONTROL
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
#error "Please enable device tree support to use this driver"
#endif
bbstate->bounce_buffer, bbstate->user_buffer, data->blocks,
data->blocksize);
- writel((u32)bbstate->bounce_buffer, &host->reg->sysad);
+ writel((u32)(unsigned long)bbstate->bounce_buffer, &host->reg->sysad);
/*
* DMASEL[4:3]
* 00 = Selects SDMA
if (i == retry) {
printf("%s: waiting for status update\n", __func__);
writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ return -ETIMEDOUT;
}
if (mask & TEGRA_MMC_NORINTSTS_CMD_TIMEOUT) {
/* Timeout Error */
debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ return -ETIMEDOUT;
} else if (mask & TEGRA_MMC_NORINTSTS_ERR_INTERRUPT) {
/* Error Interrupt */
debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
if (cmd->resp_type & MMC_RSP_136) {
/* CRC is stripped so we need to do some shifting. */
for (i = 0; i < 4; i++) {
- unsigned int offset =
- (unsigned int)(&host->reg->rspreg3 - i);
+ unsigned long offset =
+ (unsigned long)(&host->reg->rspreg3 - i);
cmd->response[i] = readl(offset) << 8;
if (i != 3) {
if (i == retry) {
printf("%s: card is still busy\n", __func__);
writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ return -ETIMEDOUT;
}
cmd->response[0] = readl(&host->reg->rspreg0);
/* Transfer Complete */
debug("r/w is done\n");
break;
- } else if (get_timer(start) > 2000UL) {
+ } else if (get_timer(start) > 8000UL) {
writel(mask, &host->reg->norintsts);
printf("%s: MMC Timeout\n"
" Interrupt status 0x%08x\n"
*/
if (clock == 0)
goto out;
+#ifdef CONFIG_TEGRA186
+ {
+ ulong rate = clk_set_rate(&host->clk, clock);
+ div = (rate + clock - 1) / clock;
+ }
+#else
clock_adjust_periph_pll_div(host->mmc_id, CLOCK_ID_PERIPH, clock,
&div);
+#endif
debug("div = %d\n", div);
writew(0, &host->reg->clkcon);
return 0;
}
-int tegra_mmc_getcd(struct mmc *mmc)
+static int tegra_mmc_getcd(struct mmc *mmc)
{
struct mmc_host *host = mmc->priv;
debug("tegra_mmc_getcd called\n");
- if (fdt_gpio_isvalid(&host->cd_gpio))
- return fdtdec_get_gpio(&host->cd_gpio);
+ if (dm_gpio_is_valid(&host->cd_gpio))
+ return dm_gpio_get_value(&host->cd_gpio);
return 1;
}
.getcd = tegra_mmc_getcd,
};
-static int do_mmc_init(int dev_index)
+static int do_mmc_init(int dev_index, bool removable)
{
struct mmc_host *host;
- char gpusage[12]; /* "SD/MMCn PWR" or "SD/MMCn CD" */
struct mmc *mmc;
+#ifdef CONFIG_TEGRA186
+ int ret;
+#endif
/* DT should have been read & host config filled in */
host = &mmc_host[dev_index];
if (!host->enabled)
return -1;
- debug(" do_mmc_init: index %d, bus width %d "
- "pwr_gpio %d cd_gpio %d\n",
- dev_index, host->width,
- host->pwr_gpio.gpio, host->cd_gpio.gpio);
+ debug(" do_mmc_init: index %d, bus width %d pwr_gpio %d cd_gpio %d\n",
+ dev_index, host->width, gpio_get_number(&host->pwr_gpio),
+ gpio_get_number(&host->cd_gpio));
host->clock = 0;
- clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000);
- if (fdt_gpio_isvalid(&host->pwr_gpio)) {
- sprintf(gpusage, "SD/MMC%d PWR", dev_index);
- gpio_request(host->pwr_gpio.gpio, gpusage);
- gpio_direction_output(host->pwr_gpio.gpio, 1);
- debug(" Power GPIO name = %s\n", host->pwr_gpio.name);
- }
+#ifdef CONFIG_TEGRA186
+ ret = reset_assert(&host->reset_ctl);
+ if (ret)
+ return ret;
+ ret = clk_enable(&host->clk);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(&host->clk, 20000000);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+ ret = reset_deassert(&host->reset_ctl);
+ if (ret)
+ return ret;
+#else
+ clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000);
+#endif
- if (fdt_gpio_isvalid(&host->cd_gpio)) {
- sprintf(gpusage, "SD/MMC%d CD", dev_index);
- gpio_request(host->cd_gpio.gpio, gpusage);
- gpio_direction_input(host->cd_gpio.gpio);
- debug(" CD GPIO name = %s\n", host->cd_gpio.name);
- }
+ if (dm_gpio_is_valid(&host->pwr_gpio))
+ dm_gpio_set_value(&host->pwr_gpio, 1);
memset(&host->cfg, 0, sizeof(host->cfg));
host->cfg.host_caps |= MMC_MODE_8BIT;
if (host->width >= 4)
host->cfg.host_caps |= MMC_MODE_4BIT;
- host->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
+ host->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
/*
* min freq is for card identification, and is the highest
host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
mmc = mmc_create(&host->cfg, host);
+ mmc->block_dev.removable = removable;
if (mmc == NULL)
return -1;
* @param node Device index (0-3)
* @param host Structure to fill in (reg, width, mmc_id)
*/
-static int mmc_get_config(const void *blob, int node, struct mmc_host *host)
+static int mmc_get_config(const void *blob, int node, struct mmc_host *host,
+ bool *removablep)
{
debug("%s: node = %d\n", __func__, node);
return -FDT_ERR_NOTFOUND;
}
+#ifdef CONFIG_TEGRA186
+ {
+ /*
+ * FIXME: This variable should go away when the MMC device
+ * actually is a udevice.
+ */
+ struct udevice dev;
+ int ret;
+ dev.of_offset = node;
+ ret = reset_get_by_name(&dev, "sdhci", &host->reset_ctl);
+ if (ret) {
+ debug("reset_get_by_name() failed: %d\n", ret);
+ return ret;
+ }
+ ret = clk_get_by_index(&dev, 0, &host->clk);
+ if (ret) {
+ debug("clk_get_by_index() failed: %d\n", ret);
+ return ret;
+ }
+ }
+#else
host->mmc_id = clock_decode_periph_id(blob, node);
if (host->mmc_id == PERIPH_ID_NONE) {
debug("%s: could not decode periph id\n", __func__);
return -FDT_ERR_NOTFOUND;
}
+#endif
/*
* NOTE: mmc->bus_width is determined by mmc.c dynamically.
debug("%s: no sdmmc width found\n", __func__);
/* These GPIOs are optional */
- fdtdec_decode_gpio(blob, node, "cd-gpios", &host->cd_gpio);
- fdtdec_decode_gpio(blob, node, "wp-gpios", &host->wp_gpio);
- fdtdec_decode_gpio(blob, node, "power-gpios", &host->pwr_gpio);
+ gpio_request_by_name_nodev(blob, node, "cd-gpios", 0, &host->cd_gpio,
+ GPIOD_IS_IN);
+ gpio_request_by_name_nodev(blob, node, "wp-gpios", 0, &host->wp_gpio,
+ GPIOD_IS_IN);
+ gpio_request_by_name_nodev(blob, node, "power-gpios", 0,
+ &host->pwr_gpio, GPIOD_IS_OUT);
+ *removablep = !fdtdec_get_bool(blob, node, "non-removable");
debug("%s: found controller at %p, width = %d, periph_id = %d\n",
- __func__, host->reg, host->width, host->mmc_id);
+ __func__, host->reg, host->width,
+#ifndef CONFIG_TEGRA186
+ host->mmc_id
+#else
+ -1
+#endif
+ );
return 0;
}
static int process_nodes(const void *blob, int node_list[], int count)
{
struct mmc_host *host;
+ bool removable;
int i, node;
debug("%s: count = %d\n", __func__, count);
host = &mmc_host[i];
host->id = i;
- if (mmc_get_config(blob, node, host)) {
+ if (mmc_get_config(blob, node, host, &removable)) {
printf("%s: failed to decode dev %d\n", __func__, i);
return -1;
}
- do_mmc_init(i);
+ do_mmc_init(i, removable);
}
return 0;
}
const void *blob = gd->fdt_blob;
debug("%s entry\n", __func__);
+ /* See if any Tegra186 MMC controllers are present */
+ count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ COMPAT_NVIDIA_TEGRA186_SDMMC, node_list,
+ CONFIG_SYS_MMC_MAX_DEVICE);
+ debug("%s: count of Tegra186 sdhci nodes is %d\n", __func__, count);
+ if (process_nodes(blob, node_list, count)) {
+ printf("%s: Error processing T186 mmc node(s)!\n", __func__);
+ return;
+ }
+
+ /* See if any Tegra210 MMC controllers are present */
+ count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ COMPAT_NVIDIA_TEGRA210_SDMMC, node_list,
+ CONFIG_SYS_MMC_MAX_DEVICE);
+ debug("%s: count of Tegra210 sdhci nodes is %d\n", __func__, count);
+ if (process_nodes(blob, node_list, count)) {
+ printf("%s: Error processing T210 mmc node(s)!\n", __func__);
+ return;
+ }
+
/* See if any Tegra124 MMC controllers are present */
count = fdtdec_find_aliases_for_id(blob, "sdhci",
COMPAT_NVIDIA_TEGRA124_SDMMC, node_list,
CONFIG_SYS_MMC_MAX_DEVICE);
debug("%s: count of Tegra124 sdhci nodes is %d\n", __func__, count);
if (process_nodes(blob, node_list, count)) {
- printf("%s: Error processing T30 mmc node(s)!\n", __func__);
+ printf("%s: Error processing T124 mmc node(s)!\n", __func__);
return;
}
projects / J-u-boot.git / blobdiff