+// SPDX-License-Identifier: GPL-2.0+
/*
* ARM PrimeCell MultiMedia Card Interface - PL180
*
* Author: Ulf Hansson <ulf.hansson@stericsson.com>
* Author: Martin Lundholm <martin.xa.lundholm@stericsson.com>
* Ported to drivers/mmc/ by: Matt Waddel <matt.waddel@linaro.org>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/* #define DEBUG */
#include "common.h"
#include <clk.h>
#include <errno.h>
+#include <log.h>
#include <malloc.h>
#include <mmc.h>
+#include <dm/device_compat.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
#include "arm_pl180_mmci.h"
+#include <linux/delay.h>
#ifdef CONFIG_DM_MMC
#include <dm.h>
.set_ios = host_set_ios,
.init = mmc_host_reset,
};
-#endif
/*
* mmc_host_init - initialize the mmc controller.
* Set initial clock and power for mmc slot.
* Initialize mmc struct and register with mmc framework.
*/
+
int arm_pl180_mmci_init(struct pl180_mmc_host *host, struct mmc **mmc)
{
u32 sdi_u32;
writel(sdi_u32, &host->base->mask0);
host->cfg.name = host->name;
-#ifndef CONFIG_DM_MMC
host->cfg.ops = &arm_pl180_mmci_ops;
-#endif
+
/* TODO remove the duplicates */
host->cfg.host_caps = host->caps;
host->cfg.voltages = host->voltages;
*mmc = mmc_create(&host->cfg, host);
if (!*mmc)
return -1;
-
debug("registered mmc interface number is:%d\n",
(*mmc)->block_dev.devnum);
return 0;
}
+#endif
#ifdef CONFIG_DM_MMC
+static void arm_pl180_mmc_init(struct pl180_mmc_host *host)
+{
+ u32 sdi_u32;
+
+ writel(host->pwr_init, &host->base->power);
+ writel(host->clkdiv_init, &host->base->clock);
+ udelay(CLK_CHANGE_DELAY);
+
+ /* Disable mmc interrupts */
+ sdi_u32 = readl(&host->base->mask0) & ~SDI_MASK0_MASK;
+ writel(sdi_u32, &host->base->mask0);
+}
+
static int arm_pl180_mmc_probe(struct udevice *dev)
{
struct arm_pl180_mmc_plat *pdata = dev_get_platdata(dev);
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct mmc *mmc = &pdata->mmc;
- struct pl180_mmc_host *host = mmc->priv;
+ struct pl180_mmc_host *host = dev->priv;
+ struct mmc_config *cfg = &pdata->cfg;
struct clk clk;
u32 bus_width;
+ u32 periphid;
int ret;
ret = clk_get_by_index(dev, 0, &clk);
ret = clk_enable(&clk);
if (ret) {
+ clk_free(&clk);
dev_err(dev, "failed to enable clock\n");
return ret;
}
- strcpy(host->name, "MMC");
host->pwr_init = INIT_PWR;
host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN |
SDI_CLKCR_HWFC_EN;
- host->voltages = VOLTAGE_WINDOW_SD;
- host->caps = 0;
host->clock_in = clk_get_rate(&clk);
- host->clock_min = host->clock_in / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
- host->clock_max = dev_read_u32_default(dev, "max-frequency",
- MMC_CLOCK_MAX);
- host->version2 = dev_get_driver_data(dev);
+
+ periphid = dev_read_u32_default(dev, "arm,primecell-periphid", 0);
+ switch (periphid) {
+ case STM32_MMCI_ID: /* stm32 variant */
+ host->version2 = false;
+ break;
+ default:
+ host->version2 = true;
+ }
+
+ cfg->name = dev->name;
+ cfg->voltages = VOLTAGE_WINDOW_SD;
+ cfg->host_caps = 0;
+ cfg->f_min = host->clock_in / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
+ cfg->f_max = dev_read_u32_default(dev, "max-frequency", MMC_CLOCK_MAX);
+ cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN);
bus_width = dev_read_u32_default(dev, "bus-width", 1);
switch (bus_width) {
case 8:
- host->caps |= MMC_MODE_8BIT;
+ cfg->host_caps |= MMC_MODE_8BIT;
/* Hosts capable of 8-bit transfers can also do 4 bits */
case 4:
- host->caps |= MMC_MODE_4BIT;
+ cfg->host_caps |= MMC_MODE_4BIT;
break;
case 1:
break;
dev_err(dev, "Invalid bus-width value %u\n", bus_width);
}
- ret = arm_pl180_mmci_init(host, &mmc);
- if (ret) {
- dev_err(dev, "arm_pl180_mmci init failed\n");
- return ret;
- }
-
+ arm_pl180_mmc_init(host);
+ mmc->priv = host;
mmc->dev = dev;
- dev->priv = host;
upriv->mmc = mmc;
return 0;
}
+int arm_pl180_mmc_bind(struct udevice *dev)
+{
+ struct arm_pl180_mmc_plat *plat = dev_get_platdata(dev);
+
+ return mmc_bind(dev, &plat->mmc, &plat->cfg);
+}
+
static int dm_host_request(struct udevice *dev, struct mmc_cmd *cmd,
struct mmc_data *data)
{
static int dm_mmc_getcd(struct udevice *dev)
{
- struct arm_pl180_mmc_plat *pdata = dev_get_platdata(dev);
- struct mmc *mmc = &pdata->mmc;
- struct pl180_mmc_host *host = mmc->priv;
+ struct pl180_mmc_host *host = dev->priv;
int value = 1;
- if (dm_gpio_is_valid(&host->cd_gpio)) {
+ if (dm_gpio_is_valid(&host->cd_gpio))
value = dm_gpio_get_value(&host->cd_gpio);
- if (host->cd_inverted)
- return !value;
- }
return value;
}
static int arm_pl180_mmc_ofdata_to_platdata(struct udevice *dev)
{
- struct arm_pl180_mmc_plat *pdata = dev_get_platdata(dev);
- struct mmc *mmc = &pdata->mmc;
- struct pl180_mmc_host *host = mmc->priv;
+ struct pl180_mmc_host *host = dev->priv;
fdt_addr_t addr;
- addr = devfdt_get_addr(dev);
+ addr = dev_read_addr(dev);
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
}
static const struct udevice_id arm_pl180_mmc_match[] = {
- { .compatible = "st,stm32f4xx-sdio", .data = VERSION1 },
+ { .compatible = "arm,pl180" },
+ { .compatible = "arm,primecell" },
{ /* sentinel */ }
};
.ops = &arm_pl180_dm_mmc_ops,
.probe = arm_pl180_mmc_probe,
.ofdata_to_platdata = arm_pl180_mmc_ofdata_to_platdata,
+ .bind = arm_pl180_mmc_bind,
.priv_auto_alloc_size = sizeof(struct pl180_mmc_host),
.platdata_auto_alloc_size = sizeof(struct arm_pl180_mmc_plat),
};
projects / platform / kernel / u-boot.git / blobdiff