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mmc: stm32_sdmmc2: introduce of_to_plat ops

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Add the uclass ops of_to_plat to parse the device tree properties
to respect the expected sequence by the driver model.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2022-06-30 10:01:47 +02:00
parent efd77dbca3
commit cb8edb996b
1 changed files with 50 additions and 45 deletions
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95
drivers/mmc/stm32_sdmmc2.c
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@ -645,6 +645,47 @@ static const struct dm_mmc_ops stm32_sdmmc2_ops = {
.host_power_cycle = stm32_sdmmc2_host_power_cycle,
};
static int stm32_sdmmc2_of_to_plat(struct udevice *dev)
{
struct stm32_sdmmc2_plat *plat = dev_get_plat(dev);
struct mmc_config *cfg = &plat->cfg;
int ret;
plat->base = dev_read_addr(dev);
if (plat->base == FDT_ADDR_T_NONE)
return -EINVAL;
if (dev_read_bool(dev, "st,neg-edge"))
plat->clk_reg_msk |= SDMMC_CLKCR_NEGEDGE;
if (dev_read_bool(dev, "st,sig-dir"))
plat->pwr_reg_msk |= SDMMC_POWER_DIRPOL;
if (dev_read_bool(dev, "st,use-ckin"))
plat->clk_reg_msk |= SDMMC_CLKCR_SELCLKRX_CKIN;
cfg->f_min = 400000;
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
cfg->name = "STM32 SD/MMC";
cfg->host_caps = 0;
cfg->f_max = 52000000;
ret = mmc_of_parse(dev, cfg);
if (ret)
return ret;
ret = clk_get_by_index(dev, 0, &plat->clk);
if (ret)
return ret;
ret = reset_get_by_index(dev, 0, &plat->reset_ctl);
if (ret)
dev_dbg(dev, "No reset provided\n");
gpio_request_by_name(dev, "cd-gpios", 0, &plat->cd_gpio,
GPIOD_IS_IN);
return 0;
}
static int stm32_sdmmc2_probe_level_translator(struct udevice *dev)
{
struct stm32_sdmmc2_plat *plat = dev_get_plat(dev);
@ -653,12 +694,6 @@ static int stm32_sdmmc2_probe_level_translator(struct udevice *dev)
struct gpio_desc ckin_gpio;
int clk_hi, clk_lo, ret;
/*
* Assume the level translator is present if st,use-ckin is set.
* This is to cater for DTs which do not implement this test.
*/
plat->clk_reg_msk |= SDMMC_CLKCR_SELCLKRX_CKIN;
ret = gpio_request_by_name(dev, "st,cmd-gpios", 0, &cmd_gpio,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
if (ret)
@ -709,54 +744,23 @@ static int stm32_sdmmc2_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct stm32_sdmmc2_plat *plat = dev_get_plat(dev);
struct mmc_config *cfg = &plat->cfg;
int ret;
plat->base = dev_read_addr(dev);
if (plat->base == FDT_ADDR_T_NONE)
return -EINVAL;
if (dev_read_bool(dev, "st,neg-edge"))
plat->clk_reg_msk |= SDMMC_CLKCR_NEGEDGE;
if (dev_read_bool(dev, "st,sig-dir"))
plat->pwr_reg_msk |= SDMMC_POWER_DIRPOL;
if (dev_read_bool(dev, "st,use-ckin"))
stm32_sdmmc2_probe_level_translator(dev);
ret = clk_get_by_index(dev, 0, &plat->clk);
if (ret)
return ret;
ret = clk_enable(&plat->clk);
if (ret)
goto clk_free;
ret = reset_get_by_index(dev, 0, &plat->reset_ctl);
if (ret)
dev_dbg(dev, "No reset provided\n");
gpio_request_by_name(dev, "cd-gpios", 0, &plat->cd_gpio,
GPIOD_IS_IN);
cfg->f_min = 400000;
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
cfg->name = "STM32 SD/MMC";
cfg->host_caps = 0;
cfg->f_max = 52000000;
mmc_of_parse(dev, cfg);
if (ret) {
clk_free(&plat->clk);
return ret;
}
upriv->mmc = &plat->mmc;
if (plat->clk_reg_msk & SDMMC_CLKCR_SELCLKRX_CKIN)
stm32_sdmmc2_probe_level_translator(dev);
/* SDMMC init */
stm32_sdmmc2_reset(plat);
return 0;
clk_free:
clk_free(&plat->clk);
return ret;
}
static int stm32_sdmmc2_bind(struct udevice *dev)
@ -778,5 +782,6 @@ U_BOOT_DRIVER(stm32_sdmmc2) = {
.ops = &stm32_sdmmc2_ops,
.probe = stm32_sdmmc2_probe,
.bind = stm32_sdmmc2_bind,
.of_to_plat = stm32_sdmmc2_of_to_plat,
.plat_auto = sizeof(struct stm32_sdmmc2_plat),
};