*/
#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_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 */
struct sunxi_mmc *reg;
struct mmc_config cfg;
};
+#if !CONFIG_IS_ENABLED(DM_MMC)
/* support 4 mmc hosts */
struct sunxi_mmc_priv mmc_host[4];
return ret;
}
+#endif
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;
#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), priv->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",
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_priv *priv = &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(priv, 24000000);
-}
-
static int mmc_update_clk(struct sunxi_mmc_priv *priv)
{
unsigned int cmd;
return 0;
}
+#if !CONFIG_IS_ENABLED(DM_MMC)
static int sunxi_mmc_core_init(struct mmc *mmc)
{
struct sunxi_mmc_priv *priv = mmc->priv;
return 0;
}
+#endif
static int mmc_trans_data_by_cpu(struct sunxi_mmc_priv *priv, struct mmc *mmc,
struct mmc_data *data)
return error;
}
+#if !CONFIG_IS_ENABLED(DM_MMC)
static int sunxi_mmc_set_ios_legacy(struct mmc *mmc)
{
struct sunxi_mmc_priv *priv = mmc->priv;
struct mmc *sunxi_mmc_init(int sdc_no)
{
+ 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(priv, '\0', sizeof(struct sunxi_mmc_priv));
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);
- return mmc_create(cfg, mmc_host);
+ if (dm_gpio_is_valid(&priv->cd_gpio))
+ return dm_gpio_get_value(&priv->cd_gpio);
+
+ 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);
+ }
+
+ 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,sun5i-a13-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 / people / ms / u-boot.git / blobdiff