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https://github.com/AsahiLinux/u-boot
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dm: mmc: sunxi: Add support for driver model
Add a driver-model version of this driver which mostly uses the existing code. The old code can be removed once all boards are switched over. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
Jaehoon Chung
parent
ec73d96090
commit
dd27918c22
1 changed files with 133 additions and 0 deletions
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@ -9,6 +9,7 @@
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <malloc.h>
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#include <mmc.h>
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@ -19,14 +20,21 @@
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#include <asm/arch/mmc.h>
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#include <asm-generic/gpio.h>
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struct sunxi_mmc_plat {
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struct mmc_config cfg;
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struct mmc mmc;
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};
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struct sunxi_mmc_priv {
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unsigned mmc_no;
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uint32_t *mclkreg;
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unsigned fatal_err;
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struct gpio_desc cd_gpio; /* Change Detect GPIO */
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struct sunxi_mmc *reg;
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struct mmc_config cfg;
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};
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#if !CONFIG_IS_ENABLED(DM_MMC)
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/* support 4 mmc hosts */
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struct sunxi_mmc_priv mmc_host[4];
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@ -83,6 +91,7 @@ static int mmc_resource_init(int sdc_no)
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return ret;
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}
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#endif
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static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
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{
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@ -224,6 +233,7 @@ static int sunxi_mmc_set_ios_common(struct sunxi_mmc_priv *priv,
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return 0;
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}
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#if !CONFIG_IS_ENABLED(DM_MMC)
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static int sunxi_mmc_core_init(struct mmc *mmc)
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{
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struct sunxi_mmc_priv *priv = mmc->priv;
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@ -234,6 +244,7 @@ static int sunxi_mmc_core_init(struct mmc *mmc)
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return 0;
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}
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#endif
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static int mmc_trans_data_by_cpu(struct sunxi_mmc_priv *priv, struct mmc *mmc,
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struct mmc_data *data)
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@ -408,6 +419,7 @@ out:
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return error;
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}
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#if !CONFIG_IS_ENABLED(DM_MMC)
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static int sunxi_mmc_set_ios_legacy(struct mmc *mmc)
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{
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struct sunxi_mmc_priv *priv = mmc->priv;
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@ -488,3 +500,124 @@ struct mmc *sunxi_mmc_init(int sdc_no)
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return mmc_create(cfg, mmc_host);
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}
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#else
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static int sunxi_mmc_set_ios(struct udevice *dev)
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{
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struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
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struct sunxi_mmc_priv *priv = dev_get_priv(dev);
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return sunxi_mmc_set_ios_common(priv, &plat->mmc);
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}
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static int sunxi_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
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struct mmc_data *data)
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{
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struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
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struct sunxi_mmc_priv *priv = dev_get_priv(dev);
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return sunxi_mmc_send_cmd_common(priv, &plat->mmc, cmd, data);
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}
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static int sunxi_mmc_getcd(struct udevice *dev)
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{
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struct sunxi_mmc_priv *priv = dev_get_priv(dev);
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if (dm_gpio_is_valid(&priv->cd_gpio))
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return dm_gpio_get_value(&priv->cd_gpio);
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return 1;
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}
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static const struct dm_mmc_ops sunxi_mmc_ops = {
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.send_cmd = sunxi_mmc_send_cmd,
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.set_ios = sunxi_mmc_set_ios,
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.get_cd = sunxi_mmc_getcd,
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};
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static int sunxi_mmc_probe(struct udevice *dev)
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{
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
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struct sunxi_mmc_priv *priv = dev_get_priv(dev);
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struct mmc_config *cfg = &plat->cfg;
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struct ofnode_phandle_args args;
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u32 *gate_reg;
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int bus_width, ret;
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cfg->name = dev->name;
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bus_width = dev_read_u32_default(dev, "bus-width", 1);
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cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
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cfg->host_caps = 0;
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if (bus_width == 8)
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cfg->host_caps |= MMC_MODE_8BIT;
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if (bus_width >= 4)
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cfg->host_caps |= MMC_MODE_4BIT;
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cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
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cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
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cfg->f_min = 400000;
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cfg->f_max = 52000000;
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priv->reg = (void *)dev_read_addr(dev);
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/* We don't have a sunxi clock driver so find the clock address here */
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ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0,
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1, &args);
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if (ret)
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return ret;
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priv->mclkreg = (u32 *)ofnode_get_addr(args.node);
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ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0,
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0, &args);
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if (ret)
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return ret;
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gate_reg = (u32 *)ofnode_get_addr(args.node);
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setbits_le32(gate_reg, 1 << args.args[0]);
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priv->mmc_no = args.args[0] - 8;
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ret = mmc_set_mod_clk(priv, 24000000);
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if (ret)
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return ret;
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/* This GPIO is optional */
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if (!gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
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GPIOD_IS_IN)) {
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int cd_pin = gpio_get_number(&priv->cd_gpio);
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sunxi_gpio_set_pull(cd_pin, SUNXI_GPIO_PULL_UP);
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}
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upriv->mmc = &plat->mmc;
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/* Reset controller */
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writel(SUNXI_MMC_GCTRL_RESET, &priv->reg->gctrl);
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udelay(1000);
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return 0;
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}
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static int sunxi_mmc_bind(struct udevice *dev)
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{
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struct sunxi_mmc_plat *plat = dev_get_platdata(dev);
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return mmc_bind(dev, &plat->mmc, &plat->cfg);
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}
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static const struct udevice_id sunxi_mmc_ids[] = {
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{ .compatible = "allwinner,sun5i-a13-mmc" },
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{ }
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};
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U_BOOT_DRIVER(sunxi_mmc_drv) = {
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.name = "sunxi_mmc",
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.id = UCLASS_MMC,
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.of_match = sunxi_mmc_ids,
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.bind = sunxi_mmc_bind,
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.probe = sunxi_mmc_probe,
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.ops = &sunxi_mmc_ops,
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.platdata_auto_alloc_size = sizeof(struct sunxi_mmc_plat),
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.priv_auto_alloc_size = sizeof(struct sunxi_mmc_priv),
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};
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#endif
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