* (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
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <bouncebuf.h>
#include <common.h>
-#include <fdtdec.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/mmc.h>
#include <asm/arch-tegra/tegra_mmc.h>
#include <mmc.h>
DECLARE_GLOBAL_DATA_PTR;
-struct mmc mmc_dev[MAX_HOSTS];
-struct mmc_host mmc_host[MAX_HOSTS];
+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
+static void mmc_set_power(struct mmc_host *host, unsigned short power)
+{
+ u8 pwr = 0;
+ debug("%s: power = %x\n", __func__, power);
+
+ if (power != (unsigned short)-1) {
+ switch (1 << power) {
+ case MMC_VDD_165_195:
+ pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V1_8;
+ break;
+ case MMC_VDD_29_30:
+ case MMC_VDD_30_31:
+ pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_0;
+ break;
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
+ pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_3;
+ break;
+ }
+ }
+ debug("%s: pwr = %X\n", __func__, pwr);
+
+ /* Set the bus voltage first (if any) */
+ writeb(pwr, &host->reg->pwrcon);
+ if (pwr == 0)
+ return;
+
+ /* Now enable bus power */
+ pwr |= TEGRA_MMC_PWRCTL_SD_BUS_POWER;
+ writeb(pwr, &host->reg->pwrcon);
+}
+
static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data,
struct bounce_buffer *bbstate)
{
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
static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data, struct bounce_buffer *bbstate)
{
- struct mmc_host *host = (struct mmc_host *)mmc->priv;
+ struct mmc_host *host = mmc->priv;
int flags, i;
int result;
unsigned int mask = 0;
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) {
/* 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"
return 0;
}
-static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
+static int tegra_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
void *buf;
debug(" mmc_change_clock called\n");
/*
- * Change Tegra SDMMCx clock divisor here. Source is 216MHz,
- * PLLP_OUT0
+ * Change Tegra SDMMCx clock divisor here. Source is PLLP_OUT0
*/
if (clock == 0)
goto out;
host->clock = clock;
}
-static void mmc_set_ios(struct mmc *mmc)
+static void tegra_mmc_set_ios(struct mmc *mmc)
{
struct mmc_host *host = mmc->priv;
unsigned char ctrl;
debug("mmc_set_ios: hostctl = %08X\n", ctrl);
}
-static void mmc_reset(struct mmc_host *host)
+static void mmc_reset(struct mmc_host *host, struct mmc *mmc)
{
unsigned int timeout;
debug(" mmc_reset called\n");
timeout--;
udelay(1000);
}
+
+ /* Set SD bus voltage & enable bus power */
+ mmc_set_power(host, fls(mmc->cfg->voltages) - 1);
+ debug("%s: power control = %02X, host control = %02X\n", __func__,
+ readb(&host->reg->pwrcon), readb(&host->reg->hostctl));
+
+ /* Make sure SDIO pads are set up */
+ pad_init_mmc(host);
}
-static int mmc_core_init(struct mmc *mmc)
+static int tegra_mmc_core_init(struct mmc *mmc)
{
- struct mmc_host *host = (struct mmc_host *)mmc->priv;
+ struct mmc_host *host = mmc->priv;
unsigned int mask;
debug(" mmc_core_init called\n");
- mmc_reset(host);
+ mmc_reset(host, mmc);
host->version = readw(&host->reg->hcver);
debug("host version = %x\n", host->version);
return 0;
}
-int tegra_mmc_getcd(struct mmc *mmc)
+static int tegra_mmc_getcd(struct mmc *mmc)
{
- struct mmc_host *host = (struct mmc_host *)mmc->priv;
+ 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;
}
-static int do_mmc_init(int dev_index)
+static const struct mmc_ops tegra_mmc_ops = {
+ .send_cmd = tegra_mmc_send_cmd,
+ .set_ios = tegra_mmc_set_ios,
+ .init = tegra_mmc_core_init,
+ .getcd = tegra_mmc_getcd,
+};
+
+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;
/* DT should have been read & host config filled in */
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);
- }
-
- 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);
- mmc = &mmc_dev[dev_index];
+ memset(&host->cfg, 0, sizeof(host->cfg));
- sprintf(mmc->name, "Tegra SD/MMC");
- mmc->priv = host;
- mmc->send_cmd = mmc_send_cmd;
- mmc->set_ios = mmc_set_ios;
- mmc->init = mmc_core_init;
- mmc->getcd = tegra_mmc_getcd;
- mmc->getwp = NULL;
+ host->cfg.name = "Tegra SD/MMC";
+ host->cfg.ops = &tegra_mmc_ops;
- mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
- mmc->host_caps = 0;
+ host->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
+ host->cfg.host_caps = 0;
if (host->width == 8)
- mmc->host_caps |= MMC_MODE_8BIT;
+ host->cfg.host_caps |= MMC_MODE_8BIT;
if (host->width >= 4)
- mmc->host_caps |= MMC_MODE_4BIT;
- mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
+ host->cfg.host_caps |= MMC_MODE_4BIT;
+ host->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
/*
* min freq is for card identification, and is the highest
* max freq is highest HS eMMC clock as per the SD/MMC spec
* (actually 52MHz)
*/
- mmc->f_min = 375000;
- mmc->f_max = 48000000;
+ host->cfg.f_min = 375000;
+ host->cfg.f_max = 48000000;
- mmc_register(mmc);
+ 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;
return 0;
}
* @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);
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);
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;
}
void tegra_mmc_init(void)
{
- int node_list[MAX_HOSTS], count;
+ int node_list[CONFIG_SYS_MMC_MAX_DEVICE], count;
const void *blob = gd->fdt_blob;
debug("%s entry\n", __func__);
+ /* See if any Tegra210 MMC controllers are present */
count = fdtdec_find_aliases_for_id(blob, "sdhci",
- COMPAT_NVIDIA_TEGRA20_SDMMC, node_list, MAX_HOSTS);
- debug("%s: count of sdhci nodes is %d\n", __func__, count);
+ 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 T30 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__);
+ return;
+ }
+
+ /* See if any Tegra30 MMC controllers are present */
+ count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ COMPAT_NVIDIA_TEGRA30_SDMMC, node_list,
+ CONFIG_SYS_MMC_MAX_DEVICE);
+ debug("%s: count of T30 sdhci nodes is %d\n", __func__, count);
+ if (process_nodes(blob, node_list, count)) {
+ printf("%s: Error processing T30 mmc node(s)!\n", __func__);
+ return;
+ }
+
+ /* Now look for any Tegra20 MMC controllers */
+ count = fdtdec_find_aliases_for_id(blob, "sdhci",
+ COMPAT_NVIDIA_TEGRA20_SDMMC, node_list,
+ CONFIG_SYS_MMC_MAX_DEVICE);
+ debug("%s: count of T20 sdhci nodes is %d\n", __func__, count);
if (process_nodes(blob, node_list, count)) {
- printf("%s: Error processing mmc node(s)!\n", __func__);
+ printf("%s: Error processing T20 mmc node(s)!\n", __func__);
return;
}
}
projects / karo-tx-uboot.git / blobdiff