* (C) Copyright 2009 SAMSUNG Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Jaehoon Chung <jh80.chung@samsung.com>
- * 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);
*/
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);
.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;
struct mmc *mmc;
+#ifdef CONFIG_TEGRA186
+ int ret;
+#endif
/* DT should have been read & host config filled in */
host = &mmc_host[dev_index];
gpio_get_number(&host->cd_gpio));
host->clock = 0;
+
+#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 (dm_gpio_is_valid(&host->pwr_gpio))
dm_gpio_set_value(&host->pwr_gpio, 1);
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.
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, "mmc",
+ 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, "mmc",
+ 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",
+ count = fdtdec_find_aliases_for_id(blob, "mmc",
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;
}
/* See if any Tegra30 MMC controllers are present */
- count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ count = fdtdec_find_aliases_for_id(blob, "mmc",
COMPAT_NVIDIA_TEGRA30_SDMMC, node_list,
CONFIG_SYS_MMC_MAX_DEVICE);
debug("%s: count of T30 sdhci nodes is %d\n", __func__, count);
}
/* Now look for any Tegra20 MMC controllers */
- count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ count = fdtdec_find_aliases_for_id(blob, "mmc",
COMPAT_NVIDIA_TEGRA20_SDMMC, node_list,
CONFIG_SYS_MMC_MAX_DEVICE);
debug("%s: count of T20 sdhci nodes is %d\n", __func__, count);
projects / karo-tx-uboot.git / blobdiff