+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2007-2011
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* Aaron <leafy.myeh@allwinnertech.com>
*
* MMC driver for allwinner sunxi platform.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <dm.h>
#include <errno.h>
#include <malloc.h>
#include <mmc.h>
#include <asm/arch/mmc.h>
#include <asm-generic/gpio.h>
-struct sunxi_mmc_host {
+struct sunxi_mmc_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
+
+struct sunxi_mmc_priv {
unsigned mmc_no;
uint32_t *mclkreg;
unsigned fatal_err;
+ struct gpio_desc cd_gpio; /* Change Detect GPIO */
+ int cd_inverted; /* Inverted Card Detect */
struct sunxi_mmc *reg;
struct mmc_config cfg;
};
+#if !CONFIG_IS_ENABLED(DM_MMC)
/* support 4 mmc hosts */
-struct sunxi_mmc_host mmc_host[4];
+struct sunxi_mmc_priv mmc_host[4];
static int sunxi_mmc_getcd_gpio(int sdc_no)
{
static int mmc_resource_init(int sdc_no)
{
- struct sunxi_mmc_host *mmchost = &mmc_host[sdc_no];
+ struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
int cd_pin, ret = 0;
switch (sdc_no) {
case 0:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC0_BASE;
- mmchost->mclkreg = &ccm->sd0_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC0_BASE;
+ priv->mclkreg = &ccm->sd0_clk_cfg;
break;
case 1:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC1_BASE;
- mmchost->mclkreg = &ccm->sd1_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC1_BASE;
+ priv->mclkreg = &ccm->sd1_clk_cfg;
break;
case 2:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC2_BASE;
- mmchost->mclkreg = &ccm->sd2_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC2_BASE;
+ priv->mclkreg = &ccm->sd2_clk_cfg;
break;
case 3:
- mmchost->reg = (struct sunxi_mmc *)SUNXI_MMC3_BASE;
- mmchost->mclkreg = &ccm->sd3_clk_cfg;
+ priv->reg = (struct sunxi_mmc *)SUNXI_MMC3_BASE;
+ priv->mclkreg = &ccm->sd3_clk_cfg;
break;
default:
printf("Wrong mmc number %d\n", sdc_no);
return -1;
}
- mmchost->mmc_no = sdc_no;
+ priv->mmc_no = sdc_no;
cd_pin = sunxi_mmc_getcd_gpio(sdc_no);
if (cd_pin >= 0) {
return ret;
}
+#endif
-static int mmc_set_mod_clk(struct sunxi_mmc_host *mmchost, unsigned int hz)
+static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
{
unsigned int pll, pll_hz, div, n, oclk_dly, sclk_dly;
+ bool new_mode = false;
+ u32 val = 0;
+
+ if (IS_ENABLED(CONFIG_MMC_SUNXI_HAS_NEW_MODE) && (priv->mmc_no == 2))
+ new_mode = true;
+
+ /*
+ * The MMC clock has an extra /2 post-divider when operating in the new
+ * mode.
+ */
+ if (new_mode)
+ hz = hz * 2;
if (hz <= 24000000) {
pll = CCM_MMC_CTRL_OSCM24;
}
if (n > 3) {
- printf("mmc %u error cannot set clock to %u\n",
- mmchost->mmc_no, hz);
+ printf("mmc %u error cannot set clock to %u\n", priv->mmc_no,
+ hz);
return -1;
}
oclk_dly = 0;
sclk_dly = 5;
#ifdef CONFIG_MACH_SUN9I
- } else if (hz <= 50000000) {
+ } else if (hz <= 52000000) {
oclk_dly = 5;
sclk_dly = 4;
} else {
- /* hz > 50000000 */
+ /* hz > 52000000 */
oclk_dly = 2;
sclk_dly = 4;
#else
- } else if (hz <= 50000000) {
+ } else if (hz <= 52000000) {
oclk_dly = 3;
sclk_dly = 4;
} else {
- /* hz > 50000000 */
+ /* hz > 52000000 */
oclk_dly = 1;
sclk_dly = 4;
#endif
}
- writel(CCM_MMC_CTRL_ENABLE | pll | CCM_MMC_CTRL_SCLK_DLY(sclk_dly) |
- CCM_MMC_CTRL_N(n) | CCM_MMC_CTRL_OCLK_DLY(oclk_dly) |
- CCM_MMC_CTRL_M(div), mmchost->mclkreg);
+ if (new_mode) {
+#ifdef CONFIG_MMC_SUNXI_HAS_NEW_MODE
+ val = CCM_MMC_CTRL_MODE_SEL_NEW;
+ setbits_le32(&priv->reg->ntsr, SUNXI_MMC_NTSR_MODE_SEL_NEW);
+#endif
+ } else {
+ val = CCM_MMC_CTRL_OCLK_DLY(oclk_dly) |
+ CCM_MMC_CTRL_SCLK_DLY(sclk_dly);
+ }
+
+ writel(CCM_MMC_CTRL_ENABLE| pll | CCM_MMC_CTRL_N(n) |
+ CCM_MMC_CTRL_M(div) | val, priv->mclkreg);
debug("mmc %u set mod-clk req %u parent %u n %u m %u rate %u\n",
- mmchost->mmc_no, hz, pll_hz, 1u << n, div,
- pll_hz / (1u << n) / div);
+ priv->mmc_no, hz, pll_hz, 1u << n, div, pll_hz / (1u << n) / div);
return 0;
}
-static int mmc_clk_io_on(int sdc_no)
-{
- struct sunxi_mmc_host *mmchost = &mmc_host[sdc_no];
- struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-
- debug("init mmc %d clock and io\n", sdc_no);
-
- /* config ahb clock */
- setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
-
-#ifdef CONFIG_SUNXI_GEN_SUN6I
- /* unassert reset */
- setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
-#endif
-#if defined(CONFIG_MACH_SUN9I)
- /* sun9i has a mmc-common module, also set the gate and reset there */
- writel(SUNXI_MMC_COMMON_CLK_GATE | SUNXI_MMC_COMMON_RESET,
- SUNXI_MMC_COMMON_BASE + 4 * sdc_no);
-#endif
-
- return mmc_set_mod_clk(mmchost, 24000000);
-}
-
-static int mmc_update_clk(struct mmc *mmc)
+static int mmc_update_clk(struct sunxi_mmc_priv *priv)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
unsigned int cmd;
unsigned timeout_msecs = 2000;
+ unsigned long start = get_timer(0);
cmd = SUNXI_MMC_CMD_START |
SUNXI_MMC_CMD_UPCLK_ONLY |
SUNXI_MMC_CMD_WAIT_PRE_OVER;
- writel(cmd, &mmchost->reg->cmd);
- while (readl(&mmchost->reg->cmd) & SUNXI_MMC_CMD_START) {
- if (!timeout_msecs--)
+
+ writel(cmd, &priv->reg->cmd);
+ while (readl(&priv->reg->cmd) & SUNXI_MMC_CMD_START) {
+ if (get_timer(start) > timeout_msecs)
return -1;
- udelay(1000);
}
/* clock update sets various irq status bits, clear these */
- writel(readl(&mmchost->reg->rint), &mmchost->reg->rint);
+ writel(readl(&priv->reg->rint), &priv->reg->rint);
return 0;
}
-static int mmc_config_clock(struct mmc *mmc)
+static int mmc_config_clock(struct sunxi_mmc_priv *priv, struct mmc *mmc)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
- unsigned rval = readl(&mmchost->reg->clkcr);
+ unsigned rval = readl(&priv->reg->clkcr);
/* Disable Clock */
rval &= ~SUNXI_MMC_CLK_ENABLE;
- writel(rval, &mmchost->reg->clkcr);
- if (mmc_update_clk(mmc))
+ writel(rval, &priv->reg->clkcr);
+ if (mmc_update_clk(priv))
return -1;
/* Set mod_clk to new rate */
- if (mmc_set_mod_clk(mmchost, mmc->clock))
+ if (mmc_set_mod_clk(priv, mmc->clock))
return -1;
/* Clear internal divider */
rval &= ~SUNXI_MMC_CLK_DIVIDER_MASK;
- writel(rval, &mmchost->reg->clkcr);
+ writel(rval, &priv->reg->clkcr);
/* Re-enable Clock */
rval |= SUNXI_MMC_CLK_ENABLE;
- writel(rval, &mmchost->reg->clkcr);
- if (mmc_update_clk(mmc))
+ writel(rval, &priv->reg->clkcr);
+ if (mmc_update_clk(priv))
return -1;
return 0;
}
-static void sunxi_mmc_set_ios(struct mmc *mmc)
+static int sunxi_mmc_set_ios_common(struct sunxi_mmc_priv *priv,
+ struct mmc *mmc)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
-
debug("set ios: bus_width: %x, clock: %d\n",
mmc->bus_width, mmc->clock);
/* Change clock first */
- if (mmc->clock && mmc_config_clock(mmc) != 0) {
- mmchost->fatal_err = 1;
- return;
+ if (mmc->clock && mmc_config_clock(priv, mmc) != 0) {
+ priv->fatal_err = 1;
+ return -EINVAL;
}
/* Change bus width */
if (mmc->bus_width == 8)
- writel(0x2, &mmchost->reg->width);
+ writel(0x2, &priv->reg->width);
else if (mmc->bus_width == 4)
- writel(0x1, &mmchost->reg->width);
+ writel(0x1, &priv->reg->width);
else
- writel(0x0, &mmchost->reg->width);
+ writel(0x0, &priv->reg->width);
+
+ return 0;
}
+#if !CONFIG_IS_ENABLED(DM_MMC)
static int sunxi_mmc_core_init(struct mmc *mmc)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
+ struct sunxi_mmc_priv *priv = mmc->priv;
/* Reset controller */
- writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl);
+ writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
udelay(1000);
return 0;
}
+#endif
-static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
+static int mmc_trans_data_by_cpu(struct sunxi_mmc_priv *priv, struct mmc *mmc,
+ struct mmc_data *data)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
const int reading = !!(data->flags & MMC_DATA_READ);
const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
SUNXI_MMC_STATUS_FIFO_FULL;
unsigned *buff = (unsigned int *)(reading ? data->dest : data->src);
unsigned byte_cnt = data->blocksize * data->blocks;
unsigned timeout_msecs = byte_cnt >> 8;
+ unsigned long start;
+
if (timeout_msecs < 2000)
timeout_msecs = 2000;
/* Always read / write data through the CPU */
- setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
+ setbits_le32(&priv->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
+
+ start = get_timer(0);
for (i = 0; i < (byte_cnt >> 2); i++) {
- while (readl(&mmchost->reg->status) & status_bit) {
- if (!timeout_msecs--)
+ while (readl(&priv->reg->status) & status_bit) {
+ if (get_timer(start) > timeout_msecs)
return -1;
- udelay(1000);
}
if (reading)
- buff[i] = readl(&mmchost->reg->fifo);
+ buff[i] = readl(&priv->reg->fifo);
else
- writel(buff[i], &mmchost->reg->fifo);
+ writel(buff[i], &priv->reg->fifo);
}
return 0;
}
-static int mmc_rint_wait(struct mmc *mmc, unsigned int timeout_msecs,
- unsigned int done_bit, const char *what)
+static int mmc_rint_wait(struct sunxi_mmc_priv *priv, struct mmc *mmc,
+ uint timeout_msecs, uint done_bit, const char *what)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
unsigned int status;
+ unsigned long start = get_timer(0);
do {
- status = readl(&mmchost->reg->rint);
- if (!timeout_msecs-- ||
+ status = readl(&priv->reg->rint);
+ if ((get_timer(start) > timeout_msecs) ||
(status & SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT)) {
debug("%s timeout %x\n", what,
status & SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT);
- return TIMEOUT;
+ return -ETIMEDOUT;
}
- udelay(1000);
} while (!(status & done_bit));
return 0;
}
-static int sunxi_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data)
+static int sunxi_mmc_send_cmd_common(struct sunxi_mmc_priv *priv,
+ struct mmc *mmc, struct mmc_cmd *cmd,
+ struct mmc_data *data)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
unsigned int cmdval = SUNXI_MMC_CMD_START;
unsigned int timeout_msecs;
int error = 0;
unsigned int status = 0;
unsigned int bytecnt = 0;
- if (mmchost->fatal_err)
+ if (priv->fatal_err)
return -1;
if (cmd->resp_type & MMC_RSP_BUSY)
debug("mmc cmd %d check rsp busy\n", cmd->cmdidx);
cmdval |= SUNXI_MMC_CMD_WRITE;
if (data->blocks > 1)
cmdval |= SUNXI_MMC_CMD_AUTO_STOP;
- writel(data->blocksize, &mmchost->reg->blksz);
- writel(data->blocks * data->blocksize, &mmchost->reg->bytecnt);
+ writel(data->blocksize, &priv->reg->blksz);
+ writel(data->blocks * data->blocksize, &priv->reg->bytecnt);
}
- debug("mmc %d, cmd %d(0x%08x), arg 0x%08x\n", mmchost->mmc_no,
+ debug("mmc %d, cmd %d(0x%08x), arg 0x%08x\n", priv->mmc_no,
cmd->cmdidx, cmdval | cmd->cmdidx, cmd->cmdarg);
- writel(cmd->cmdarg, &mmchost->reg->arg);
+ writel(cmd->cmdarg, &priv->reg->arg);
if (!data)
- writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd);
+ writel(cmdval | cmd->cmdidx, &priv->reg->cmd);
/*
* transfer data and check status
bytecnt = data->blocksize * data->blocks;
debug("trans data %d bytes\n", bytecnt);
- writel(cmdval | cmd->cmdidx, &mmchost->reg->cmd);
- ret = mmc_trans_data_by_cpu(mmc, data);
+ writel(cmdval | cmd->cmdidx, &priv->reg->cmd);
+ ret = mmc_trans_data_by_cpu(priv, mmc, data);
if (ret) {
- error = readl(&mmchost->reg->rint) & \
+ error = readl(&priv->reg->rint) &
SUNXI_MMC_RINT_INTERRUPT_ERROR_BIT;
- error = TIMEOUT;
+ error = -ETIMEDOUT;
goto out;
}
}
- error = mmc_rint_wait(mmc, 1000, SUNXI_MMC_RINT_COMMAND_DONE, "cmd");
+ error = mmc_rint_wait(priv, mmc, 1000, SUNXI_MMC_RINT_COMMAND_DONE,
+ "cmd");
if (error)
goto out;
if (data) {
timeout_msecs = 120;
debug("cacl timeout %x msec\n", timeout_msecs);
- error = mmc_rint_wait(mmc, timeout_msecs,
+ error = mmc_rint_wait(priv, mmc, timeout_msecs,
data->blocks > 1 ?
SUNXI_MMC_RINT_AUTO_COMMAND_DONE :
SUNXI_MMC_RINT_DATA_OVER,
}
if (cmd->resp_type & MMC_RSP_BUSY) {
+ unsigned long start = get_timer(0);
timeout_msecs = 2000;
+
do {
- status = readl(&mmchost->reg->status);
- if (!timeout_msecs--) {
+ status = readl(&priv->reg->status);
+ if (get_timer(start) > timeout_msecs) {
debug("busy timeout\n");
- error = TIMEOUT;
+ error = -ETIMEDOUT;
goto out;
}
- udelay(1000);
} while (status & SUNXI_MMC_STATUS_CARD_DATA_BUSY);
}
if (cmd->resp_type & MMC_RSP_136) {
- cmd->response[0] = readl(&mmchost->reg->resp3);
- cmd->response[1] = readl(&mmchost->reg->resp2);
- cmd->response[2] = readl(&mmchost->reg->resp1);
- cmd->response[3] = readl(&mmchost->reg->resp0);
+ cmd->response[0] = readl(&priv->reg->resp3);
+ cmd->response[1] = readl(&priv->reg->resp2);
+ cmd->response[2] = readl(&priv->reg->resp1);
+ cmd->response[3] = readl(&priv->reg->resp0);
debug("mmc resp 0x%08x 0x%08x 0x%08x 0x%08x\n",
cmd->response[3], cmd->response[2],
cmd->response[1], cmd->response[0]);
} else {
- cmd->response[0] = readl(&mmchost->reg->resp0);
+ cmd->response[0] = readl(&priv->reg->resp0);
debug("mmc resp 0x%08x\n", cmd->response[0]);
}
out:
if (error < 0) {
- writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl);
- mmc_update_clk(mmc);
+ writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
+ mmc_update_clk(priv);
}
- writel(0xffffffff, &mmchost->reg->rint);
- writel(readl(&mmchost->reg->gctrl) | SUNXI_MMC_GCTRL_FIFO_RESET,
- &mmchost->reg->gctrl);
+ writel(0xffffffff, &priv->reg->rint);
+ writel(readl(&priv->reg->gctrl) | SUNXI_MMC_GCTRL_FIFO_RESET,
+ &priv->reg->gctrl);
return error;
}
-static int sunxi_mmc_getcd(struct mmc *mmc)
+#if !CONFIG_IS_ENABLED(DM_MMC)
+static int sunxi_mmc_set_ios_legacy(struct mmc *mmc)
{
- struct sunxi_mmc_host *mmchost = mmc->priv;
- int cd_pin;
-
- cd_pin = sunxi_mmc_getcd_gpio(mmchost->mmc_no);
- if (cd_pin < 0)
- return 1;
+ struct sunxi_mmc_priv *priv = mmc->priv;
- return !gpio_get_value(cd_pin);
+ return sunxi_mmc_set_ios_common(priv, mmc);
}
-int sunxi_mmc_has_egon_boot_signature(struct mmc *mmc)
+static int sunxi_mmc_send_cmd_legacy(struct mmc *mmc, struct mmc_cmd *cmd,
+ struct mmc_data *data)
{
- char *buf = malloc(512);
- int valid_signature = 0;
+ struct sunxi_mmc_priv *priv = mmc->priv;
+
+ return sunxi_mmc_send_cmd_common(priv, mmc, cmd, data);
+}
- if (buf == NULL)
- panic("Failed to allocate memory\n");
+static int sunxi_mmc_getcd_legacy(struct mmc *mmc)
+{
+ struct sunxi_mmc_priv *priv = mmc->priv;
+ int cd_pin;
- if (mmc_getcd(mmc) && mmc_init(mmc) == 0 &&
- mmc->block_dev.block_read(&mmc->block_dev, 16, 1, buf) == 1 &&
- strncmp(&buf[4], "eGON.BT0", 8) == 0)
- valid_signature = 1;
+ cd_pin = sunxi_mmc_getcd_gpio(priv->mmc_no);
+ if (cd_pin < 0)
+ return 1;
- free(buf);
- return valid_signature;
+ return !gpio_get_value(cd_pin);
}
static const struct mmc_ops sunxi_mmc_ops = {
- .send_cmd = sunxi_mmc_send_cmd,
- .set_ios = sunxi_mmc_set_ios,
+ .send_cmd = sunxi_mmc_send_cmd_legacy,
+ .set_ios = sunxi_mmc_set_ios_legacy,
.init = sunxi_mmc_core_init,
- .getcd = sunxi_mmc_getcd,
+ .getcd = sunxi_mmc_getcd_legacy,
};
struct mmc *sunxi_mmc_init(int sdc_no)
{
- struct mmc_config *cfg = &mmc_host[sdc_no].cfg;
+ struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ struct sunxi_mmc_priv *priv = &mmc_host[sdc_no];
+ struct mmc_config *cfg = &priv->cfg;
+ int ret;
- memset(&mmc_host[sdc_no], 0, sizeof(struct sunxi_mmc_host));
+ memset(priv, '\0', sizeof(struct sunxi_mmc_priv));
cfg->name = "SUNXI SD/MMC";
cfg->ops = &sunxi_mmc_ops;
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
cfg->host_caps = MMC_MODE_4BIT;
-#ifdef CONFIG_MACH_SUN50I
+#if defined(CONFIG_MACH_SUN50I) || defined(CONFIG_MACH_SUN8I)
if (sdc_no == 2)
cfg->host_caps = MMC_MODE_8BIT;
#endif
if (mmc_resource_init(sdc_no) != 0)
return NULL;
- mmc_clk_io_on(sdc_no);
+ /* config ahb clock */
+ debug("init mmc %d clock and io\n", sdc_no);
+ setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MMC(sdc_no));
+
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ /* unassert reset */
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MMC(sdc_no));
+#endif
+#if defined(CONFIG_MACH_SUN9I)
+ /* sun9i has a mmc-common module, also set the gate and reset there */
+ writel(SUNXI_MMC_COMMON_CLK_GATE | SUNXI_MMC_COMMON_RESET,
+ SUNXI_MMC_COMMON_BASE + 4 * sdc_no);
+#endif
+ ret = mmc_set_mod_clk(priv, 24000000);
+ if (ret)
+ return NULL;
+
+ return mmc_create(cfg, priv);
+}
+#else
+
+static int sunxi_mmc_set_ios(struct udevice *dev)
+{
+ struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
+ struct sunxi_mmc_priv *priv = dev_get_priv(dev);
+
+ return sunxi_mmc_set_ios_common(priv, &plat->mmc);
+}
+
+static int sunxi_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
+ struct mmc_data *data)
+{
+ struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
+ struct sunxi_mmc_priv *priv = dev_get_priv(dev);
+
+ return sunxi_mmc_send_cmd_common(priv, &plat->mmc, cmd, data);
+}
+
+static int sunxi_mmc_getcd(struct udevice *dev)
+{
+ struct sunxi_mmc_priv *priv = dev_get_priv(dev);
+
+ if (dm_gpio_is_valid(&priv->cd_gpio)) {
+ int cd_state = dm_gpio_get_value(&priv->cd_gpio);
+
+ return cd_state ^ priv->cd_inverted;
+ }
+ return 1;
+}
+
+static const struct dm_mmc_ops sunxi_mmc_ops = {
+ .send_cmd = sunxi_mmc_send_cmd,
+ .set_ios = sunxi_mmc_set_ios,
+ .get_cd = sunxi_mmc_getcd,
+};
+
+static int sunxi_mmc_probe(struct udevice *dev)
+{
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
+ struct sunxi_mmc_priv *priv = dev_get_priv(dev);
+ struct mmc_config *cfg = &plat->cfg;
+ struct ofnode_phandle_args args;
+ u32 *gate_reg;
+ int bus_width, ret;
+
+ cfg->name = dev->name;
+ bus_width = dev_read_u32_default(dev, "bus-width", 1);
+
+ cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+ cfg->host_caps = 0;
+ if (bus_width == 8)
+ cfg->host_caps |= MMC_MODE_8BIT;
+ if (bus_width >= 4)
+ cfg->host_caps |= MMC_MODE_4BIT;
+ cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
+ cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
+
+ cfg->f_min = 400000;
+ cfg->f_max = 52000000;
+
+ priv->reg = (void *)dev_read_addr(dev);
+
+ /* We don't have a sunxi clock driver so find the clock address here */
+ ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0,
+ 1, &args);
+ if (ret)
+ return ret;
+ priv->mclkreg = (u32 *)ofnode_get_addr(args.node);
+
+ ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0,
+ 0, &args);
+ if (ret)
+ return ret;
+ gate_reg = (u32 *)ofnode_get_addr(args.node);
+ setbits_le32(gate_reg, 1 << args.args[0]);
+ priv->mmc_no = args.args[0] - 8;
+
+ ret = mmc_set_mod_clk(priv, 24000000);
+ if (ret)
+ return ret;
+
+ /* This GPIO is optional */
+ if (!gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
+ GPIOD_IS_IN)) {
+ int cd_pin = gpio_get_number(&priv->cd_gpio);
+
+ sunxi_gpio_set_pull(cd_pin, SUNXI_GPIO_PULL_UP);
+ }
- return mmc_create(cfg, &mmc_host[sdc_no]);
+ /* Check if card detect is inverted */
+ priv->cd_inverted = dev_read_bool(dev, "cd-inverted");
+
+ upriv->mmc = &plat->mmc;
+
+ /* Reset controller */
+ writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
+ udelay(1000);
+
+ return 0;
}
+
+static int sunxi_mmc_bind(struct udevice *dev)
+{
+ struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
+
+ return mmc_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id sunxi_mmc_ids[] = {
+ { .compatible = "allwinner,sun4i-a10-mmc" },
+ { .compatible = "allwinner,sun5i-a13-mmc" },
+ { .compatible = "allwinner,sun7i-a20-mmc" },
+ { }
+};
+
+U_BOOT_DRIVER(sunxi_mmc_drv) = {
+ .name = "sunxi_mmc",
+ .id = UCLASS_MMC,
+ .of_match = sunxi_mmc_ids,
+ .bind = sunxi_mmc_bind,
+ .probe = sunxi_mmc_probe,
+ .ops = &sunxi_mmc_ops,
+ .platdata_auto_alloc_size = sizeof(struct sunxi_mmc_plat),
+ .priv_auto_alloc_size = sizeof(struct sunxi_mmc_priv),
+};
+#endif
projects / u-boot / blobdiff