| /* |
| * (C) Copyright 2008 |
| * Texas Instruments, <www.ti.com> |
| * Sukumar Ghorai <s-ghorai@ti.com> |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation's version 2 of |
| * the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <config.h> |
| #include <common.h> |
| #include <cpu_func.h> |
| #include <log.h> |
| #include <malloc.h> |
| #include <memalign.h> |
| #include <mmc.h> |
| #include <part.h> |
| #include <i2c.h> |
| #if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX) |
| #include <palmas.h> |
| #endif |
| #include <asm/cache.h> |
| #include <asm/global_data.h> |
| #include <asm/io.h> |
| #include <asm/arch/mmc_host_def.h> |
| #ifdef CONFIG_OMAP54XX |
| #include <asm/arch/mux_dra7xx.h> |
| #include <asm/arch/dra7xx_iodelay.h> |
| #endif |
| #if !defined(CONFIG_ARCH_KEYSTONE) |
| #include <asm/gpio.h> |
| #include <asm/arch/sys_proto.h> |
| #endif |
| #ifdef CONFIG_MMC_OMAP36XX_PINS |
| #include <asm/arch/mux.h> |
| #endif |
| #include <dm.h> |
| #include <dm/devres.h> |
| #include <linux/bitops.h> |
| #include <linux/delay.h> |
| #include <linux/err.h> |
| #include <power/regulator.h> |
| #include <thermal.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* simplify defines to OMAP_HSMMC_USE_GPIO */ |
| #if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \ |
| (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO)) |
| #define OMAP_HSMMC_USE_GPIO |
| #else |
| #undef OMAP_HSMMC_USE_GPIO |
| #endif |
| |
| /* common definitions for all OMAPs */ |
| #define SYSCTL_SRC (1 << 25) |
| #define SYSCTL_SRD (1 << 26) |
| |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| struct omap_hsmmc_pinctrl_state { |
| struct pad_conf_entry *padconf; |
| int npads; |
| struct iodelay_cfg_entry *iodelay; |
| int niodelays; |
| }; |
| #endif |
| |
| struct omap_hsmmc_data { |
| struct hsmmc *base_addr; |
| #if !CONFIG_IS_ENABLED(DM_MMC) |
| struct mmc_config cfg; |
| #endif |
| uint bus_width; |
| uint clock; |
| ushort last_cmd; |
| #ifdef OMAP_HSMMC_USE_GPIO |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| struct gpio_desc cd_gpio; /* Change Detect GPIO */ |
| struct gpio_desc wp_gpio; /* Write Protect GPIO */ |
| #else |
| int cd_gpio; |
| int wp_gpio; |
| #endif |
| #endif |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| enum bus_mode mode; |
| #endif |
| u8 controller_flags; |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| struct omap_hsmmc_adma_desc *adma_desc_table; |
| uint desc_slot; |
| #endif |
| const char *hw_rev; |
| struct udevice *pbias_supply; |
| uint signal_voltage; |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| struct omap_hsmmc_pinctrl_state *default_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *hs_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *hs200_1_8v_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *ddr_1_8v_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *sdr12_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *sdr25_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *ddr50_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *sdr50_pinctrl_state; |
| struct omap_hsmmc_pinctrl_state *sdr104_pinctrl_state; |
| #endif |
| }; |
| |
| struct omap_mmc_of_data { |
| u8 controller_flags; |
| }; |
| |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| struct omap_hsmmc_adma_desc { |
| u8 attr; |
| u8 reserved; |
| u16 len; |
| u32 addr; |
| }; |
| |
| #define ADMA_MAX_LEN 63488 |
| |
| /* Decriptor table defines */ |
| #define ADMA_DESC_ATTR_VALID BIT(0) |
| #define ADMA_DESC_ATTR_END BIT(1) |
| #define ADMA_DESC_ATTR_INT BIT(2) |
| #define ADMA_DESC_ATTR_ACT1 BIT(4) |
| #define ADMA_DESC_ATTR_ACT2 BIT(5) |
| |
| #define ADMA_DESC_TRANSFER_DATA ADMA_DESC_ATTR_ACT2 |
| #define ADMA_DESC_LINK_DESC (ADMA_DESC_ATTR_ACT1 | ADMA_DESC_ATTR_ACT2) |
| #endif |
| |
| /* If we fail after 1 second wait, something is really bad */ |
| #define MAX_RETRY_MS 1000 |
| #define MMC_TIMEOUT_MS 20 |
| |
| /* DMA transfers can take a long time if a lot a data is transferred. |
| * The timeout must take in account the amount of data. Let's assume |
| * that the time will never exceed 333 ms per MB (in other word we assume |
| * that the bandwidth is always above 3MB/s). |
| */ |
| #define DMA_TIMEOUT_PER_MB 333 |
| #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0) |
| #define OMAP_HSMMC_NO_1_8_V BIT(1) |
| #define OMAP_HSMMC_USE_ADMA BIT(2) |
| #define OMAP_HSMMC_REQUIRE_IODELAY BIT(3) |
| |
| static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size); |
| static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
| unsigned int siz); |
| static void omap_hsmmc_start_clock(struct hsmmc *mmc_base); |
| static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base); |
| static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit); |
| |
| static inline struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc) |
| { |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| return dev_get_priv(mmc->dev); |
| #else |
| return (struct omap_hsmmc_data *)mmc->priv; |
| #endif |
| } |
| |
| #if defined(CONFIG_OMAP34XX) || defined(CONFIG_IODELAY_RECALIBRATION) |
| static inline struct mmc_config *omap_hsmmc_get_cfg(struct mmc *mmc) |
| { |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| struct omap_hsmmc_plat *plat = dev_get_plat(mmc->dev); |
| return &plat->cfg; |
| #else |
| return &((struct omap_hsmmc_data *)mmc->priv)->cfg; |
| #endif |
| } |
| #endif |
| |
| #if defined(OMAP_HSMMC_USE_GPIO) && !CONFIG_IS_ENABLED(DM_MMC) |
| static int omap_mmc_setup_gpio_in(int gpio, const char *label) |
| { |
| int ret; |
| |
| #if !CONFIG_IS_ENABLED(DM_GPIO) |
| if (!gpio_is_valid(gpio)) |
| return -1; |
| #endif |
| ret = gpio_request(gpio, label); |
| if (ret) |
| return ret; |
| |
| ret = gpio_direction_input(gpio); |
| if (ret) |
| return ret; |
| |
| return gpio; |
| } |
| #endif |
| |
| static unsigned char mmc_board_init(struct mmc *mmc) |
| { |
| #if defined(CONFIG_OMAP34XX) |
| struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc); |
| t2_t *t2_base = (t2_t *)T2_BASE; |
| struct prcm *prcm_base = (struct prcm *)PRCM_BASE; |
| u32 pbias_lite; |
| #ifdef CONFIG_MMC_OMAP36XX_PINS |
| u32 wkup_ctrl = readl(OMAP34XX_CTRL_WKUP_CTRL); |
| #endif |
| |
| pbias_lite = readl(&t2_base->pbias_lite); |
| pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0); |
| #ifdef CONFIG_TARGET_OMAP3_CAIRO |
| /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */ |
| pbias_lite &= ~PBIASLITEVMODE0; |
| #endif |
| #ifdef CONFIG_TARGET_OMAP3_LOGIC |
| /* For Logic PD board, 1.8V bias to go enable gpio127 for mmc_cd */ |
| pbias_lite &= ~PBIASLITEVMODE1; |
| #endif |
| #ifdef CONFIG_MMC_OMAP36XX_PINS |
| if (get_cpu_family() == CPU_OMAP36XX) { |
| /* Disable extended drain IO before changing PBIAS */ |
| wkup_ctrl &= ~OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ; |
| writel(wkup_ctrl, OMAP34XX_CTRL_WKUP_CTRL); |
| } |
| #endif |
| writel(pbias_lite, &t2_base->pbias_lite); |
| |
| writel(pbias_lite | PBIASLITEPWRDNZ1 | |
| PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, |
| &t2_base->pbias_lite); |
| |
| #ifdef CONFIG_MMC_OMAP36XX_PINS |
| if (get_cpu_family() == CPU_OMAP36XX) |
| /* Enable extended drain IO after changing PBIAS */ |
| writel(wkup_ctrl | |
| OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ, |
| OMAP34XX_CTRL_WKUP_CTRL); |
| #endif |
| writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, |
| &t2_base->devconf0); |
| |
| writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, |
| &t2_base->devconf1); |
| |
| /* Change from default of 52MHz to 26MHz if necessary */ |
| if (!(cfg->host_caps & MMC_MODE_HS_52MHz)) |
| writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL, |
| &t2_base->ctl_prog_io1); |
| |
| writel(readl(&prcm_base->fclken1_core) | |
| EN_MMC1 | EN_MMC2 | EN_MMC3, |
| &prcm_base->fclken1_core); |
| |
| writel(readl(&prcm_base->iclken1_core) | |
| EN_MMC1 | EN_MMC2 | EN_MMC3, |
| &prcm_base->iclken1_core); |
| #endif |
| |
| #if (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) &&\ |
| !CONFIG_IS_ENABLED(DM_REGULATOR) |
| /* PBIAS config needed for MMC1 only */ |
| if (mmc_get_blk_desc(mmc)->devnum == 0) |
| vmmc_pbias_config(LDO_VOLT_3V3); |
| #endif |
| |
| return 0; |
| } |
| |
| void mmc_init_stream(struct hsmmc *mmc_base) |
| { |
| ulong start; |
| |
| writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); |
| |
| writel(MMC_CMD0, &mmc_base->cmd); |
| start = get_timer(0); |
| while (!(readl(&mmc_base->stat) & CC_MASK)) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for cc!\n", __func__); |
| return; |
| } |
| } |
| writel(CC_MASK, &mmc_base->stat) |
| ; |
| writel(MMC_CMD0, &mmc_base->cmd) |
| ; |
| start = get_timer(0); |
| while (!(readl(&mmc_base->stat) & CC_MASK)) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for cc2!\n", __func__); |
| return; |
| } |
| } |
| writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); |
| } |
| |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| static void omap_hsmmc_io_recalibrate(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct omap_hsmmc_pinctrl_state *pinctrl_state; |
| |
| switch (priv->mode) { |
| case MMC_HS_200: |
| pinctrl_state = priv->hs200_1_8v_pinctrl_state; |
| break; |
| case UHS_SDR104: |
| pinctrl_state = priv->sdr104_pinctrl_state; |
| break; |
| case UHS_SDR50: |
| pinctrl_state = priv->sdr50_pinctrl_state; |
| break; |
| case UHS_DDR50: |
| pinctrl_state = priv->ddr50_pinctrl_state; |
| break; |
| case UHS_SDR25: |
| pinctrl_state = priv->sdr25_pinctrl_state; |
| break; |
| case UHS_SDR12: |
| pinctrl_state = priv->sdr12_pinctrl_state; |
| break; |
| case SD_HS: |
| case MMC_HS: |
| case MMC_HS_52: |
| pinctrl_state = priv->hs_pinctrl_state; |
| break; |
| case MMC_DDR_52: |
| pinctrl_state = priv->ddr_1_8v_pinctrl_state; |
| default: |
| pinctrl_state = priv->default_pinctrl_state; |
| break; |
| } |
| |
| if (!pinctrl_state) |
| pinctrl_state = priv->default_pinctrl_state; |
| |
| if (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY) { |
| if (pinctrl_state->iodelay) |
| late_recalibrate_iodelay(pinctrl_state->padconf, |
| pinctrl_state->npads, |
| pinctrl_state->iodelay, |
| pinctrl_state->niodelays); |
| else |
| do_set_mux32((*ctrl)->control_padconf_core_base, |
| pinctrl_state->padconf, |
| pinctrl_state->npads); |
| } |
| } |
| #endif |
| static void omap_hsmmc_set_timing(struct mmc *mmc) |
| { |
| u32 val; |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| |
| mmc_base = priv->base_addr; |
| |
| omap_hsmmc_stop_clock(mmc_base); |
| val = readl(&mmc_base->ac12); |
| val &= ~AC12_UHSMC_MASK; |
| priv->mode = mmc->selected_mode; |
| |
| if (mmc_is_mode_ddr(priv->mode)) |
| writel(readl(&mmc_base->con) | DDR, &mmc_base->con); |
| else |
| writel(readl(&mmc_base->con) & ~DDR, &mmc_base->con); |
| |
| switch (priv->mode) { |
| case MMC_HS_200: |
| case UHS_SDR104: |
| val |= AC12_UHSMC_SDR104; |
| break; |
| case UHS_SDR50: |
| val |= AC12_UHSMC_SDR50; |
| break; |
| case MMC_DDR_52: |
| case UHS_DDR50: |
| val |= AC12_UHSMC_DDR50; |
| break; |
| case SD_HS: |
| case MMC_HS_52: |
| case UHS_SDR25: |
| val |= AC12_UHSMC_SDR25; |
| break; |
| case MMC_LEGACY: |
| case MMC_HS: |
| case UHS_SDR12: |
| val |= AC12_UHSMC_SDR12; |
| break; |
| default: |
| val |= AC12_UHSMC_RES; |
| break; |
| } |
| writel(val, &mmc_base->ac12); |
| |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| omap_hsmmc_io_recalibrate(mmc); |
| #endif |
| omap_hsmmc_start_clock(mmc_base); |
| } |
| |
| static void omap_hsmmc_conf_bus_power(struct mmc *mmc, uint signal_voltage) |
| { |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 hctl, ac12; |
| |
| mmc_base = priv->base_addr; |
| |
| hctl = readl(&mmc_base->hctl) & ~SDVS_MASK; |
| ac12 = readl(&mmc_base->ac12) & ~AC12_V1V8_SIGEN; |
| |
| switch (signal_voltage) { |
| case MMC_SIGNAL_VOLTAGE_330: |
| hctl |= SDVS_3V3; |
| break; |
| case MMC_SIGNAL_VOLTAGE_180: |
| hctl |= SDVS_1V8; |
| ac12 |= AC12_V1V8_SIGEN; |
| break; |
| } |
| |
| writel(hctl, &mmc_base->hctl); |
| writel(ac12, &mmc_base->ac12); |
| } |
| |
| static int omap_hsmmc_wait_dat0(struct udevice *dev, int state, int timeout_us) |
| { |
| int ret = -ETIMEDOUT; |
| u32 con; |
| bool dat0_high; |
| bool target_dat0_high = !!state; |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| struct hsmmc *mmc_base = priv->base_addr; |
| |
| con = readl(&mmc_base->con); |
| writel(con | CON_CLKEXTFREE | CON_PADEN, &mmc_base->con); |
| |
| timeout_us = DIV_ROUND_UP(timeout_us, 10); /* check every 10 us. */ |
| while (timeout_us--) { |
| dat0_high = !!(readl(&mmc_base->pstate) & PSTATE_DLEV_DAT0); |
| if (dat0_high == target_dat0_high) { |
| ret = 0; |
| break; |
| } |
| udelay(10); |
| } |
| writel(con, &mmc_base->con); |
| |
| return ret; |
| } |
| |
| #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) |
| #if CONFIG_IS_ENABLED(DM_REGULATOR) |
| static int omap_hsmmc_set_io_regulator(struct mmc *mmc, int mV) |
| { |
| int ret = 0; |
| int uV = mV * 1000; |
| |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| |
| if (!mmc->vqmmc_supply) |
| return 0; |
| |
| /* Disable PBIAS */ |
| ret = regulator_set_enable_if_allowed(priv->pbias_supply, false); |
| if (ret) |
| return ret; |
| |
| /* Turn off IO voltage */ |
| ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, false); |
| if (ret) |
| return ret; |
| /* Program a new IO voltage value */ |
| ret = regulator_set_value(mmc->vqmmc_supply, uV); |
| if (ret) |
| return ret; |
| /* Turn on IO voltage */ |
| ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, true); |
| if (ret) |
| return ret; |
| |
| /* Program PBIAS voltage*/ |
| ret = regulator_set_value(priv->pbias_supply, uV); |
| if (ret && ret != -ENOSYS) |
| return ret; |
| /* Enable PBIAS */ |
| ret = regulator_set_enable_if_allowed(priv->pbias_supply, true); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| #endif |
| |
| static int omap_hsmmc_set_signal_voltage(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct hsmmc *mmc_base = priv->base_addr; |
| int mv = mmc_voltage_to_mv(mmc->signal_voltage); |
| u32 capa_mask; |
| __maybe_unused u8 palmas_ldo_volt; |
| u32 val; |
| |
| if (mv < 0) |
| return -EINVAL; |
| |
| if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { |
| mv = 3300; |
| capa_mask = VS33_3V3SUP; |
| palmas_ldo_volt = LDO_VOLT_3V3; |
| } else if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) { |
| capa_mask = VS18_1V8SUP; |
| palmas_ldo_volt = LDO_VOLT_1V8; |
| } else { |
| return -EOPNOTSUPP; |
| } |
| |
| val = readl(&mmc_base->capa); |
| if (!(val & capa_mask)) |
| return -EOPNOTSUPP; |
| |
| priv->signal_voltage = mmc->signal_voltage; |
| |
| omap_hsmmc_conf_bus_power(mmc, mmc->signal_voltage); |
| |
| #if CONFIG_IS_ENABLED(DM_REGULATOR) |
| return omap_hsmmc_set_io_regulator(mmc, mv); |
| #elif (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) && \ |
| defined(CONFIG_PALMAS_POWER) |
| if (mmc_get_blk_desc(mmc)->devnum == 0) |
| vmmc_pbias_config(palmas_ldo_volt); |
| return 0; |
| #else |
| return 0; |
| #endif |
| } |
| #endif |
| |
| static uint32_t omap_hsmmc_set_capabilities(struct mmc *mmc) |
| { |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 val; |
| |
| mmc_base = priv->base_addr; |
| val = readl(&mmc_base->capa); |
| |
| if (priv->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { |
| val |= (VS33_3V3SUP | VS18_1V8SUP); |
| } else if (priv->controller_flags & OMAP_HSMMC_NO_1_8_V) { |
| val |= VS33_3V3SUP; |
| val &= ~VS18_1V8SUP; |
| } else { |
| val |= VS18_1V8SUP; |
| val &= ~VS33_3V3SUP; |
| } |
| |
| writel(val, &mmc_base->capa); |
| |
| return val; |
| } |
| |
| #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING) |
| static void omap_hsmmc_disable_tuning(struct mmc *mmc) |
| { |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 val; |
| |
| mmc_base = priv->base_addr; |
| val = readl(&mmc_base->ac12); |
| val &= ~(AC12_SCLK_SEL); |
| writel(val, &mmc_base->ac12); |
| |
| val = readl(&mmc_base->dll); |
| val &= ~(DLL_FORCE_VALUE | DLL_SWT); |
| writel(val, &mmc_base->dll); |
| } |
| |
| static void omap_hsmmc_set_dll(struct mmc *mmc, int count) |
| { |
| int i; |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 val; |
| |
| mmc_base = priv->base_addr; |
| val = readl(&mmc_base->dll); |
| val |= DLL_FORCE_VALUE; |
| val &= ~(DLL_FORCE_SR_C_MASK << DLL_FORCE_SR_C_SHIFT); |
| val |= (count << DLL_FORCE_SR_C_SHIFT); |
| writel(val, &mmc_base->dll); |
| |
| val |= DLL_CALIB; |
| writel(val, &mmc_base->dll); |
| for (i = 0; i < 1000; i++) { |
| if (readl(&mmc_base->dll) & DLL_CALIB) |
| break; |
| } |
| val &= ~DLL_CALIB; |
| writel(val, &mmc_base->dll); |
| } |
| |
| static int omap_hsmmc_execute_tuning(struct udevice *dev, uint opcode) |
| { |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
| struct mmc *mmc = upriv->mmc; |
| struct hsmmc *mmc_base; |
| u32 val; |
| u8 cur_match, prev_match = 0; |
| int ret; |
| u32 phase_delay = 0; |
| u32 start_window = 0, max_window = 0; |
| u32 length = 0, max_len = 0; |
| bool single_point_failure = false; |
| struct udevice *thermal_dev; |
| int temperature; |
| int i; |
| |
| mmc_base = priv->base_addr; |
| val = readl(&mmc_base->capa2); |
| |
| /* clock tuning is not needed for upto 52MHz */ |
| if (!((mmc->selected_mode == MMC_HS_200) || |
| (mmc->selected_mode == UHS_SDR104) || |
| ((mmc->selected_mode == UHS_SDR50) && (val & CAPA2_TSDR50)))) |
| return 0; |
| |
| ret = uclass_first_device_err(UCLASS_THERMAL, &thermal_dev); |
| if (ret) { |
| printf("Couldn't get thermal device for tuning\n"); |
| return ret; |
| } |
| ret = thermal_get_temp(thermal_dev, &temperature); |
| if (ret) { |
| printf("Couldn't get temperature for tuning\n"); |
| return ret; |
| } |
| val = readl(&mmc_base->dll); |
| val |= DLL_SWT; |
| writel(val, &mmc_base->dll); |
| |
| /* |
| * Stage 1: Search for a maximum pass window ignoring any |
| * any single point failures. If the tuning value ends up |
| * near it, move away from it in stage 2 below |
| */ |
| while (phase_delay <= MAX_PHASE_DELAY) { |
| omap_hsmmc_set_dll(mmc, phase_delay); |
| |
| cur_match = !mmc_send_tuning(mmc, opcode); |
| |
| if (cur_match) { |
| if (prev_match) { |
| length++; |
| } else if (single_point_failure) { |
| /* ignore single point failure */ |
| length++; |
| single_point_failure = false; |
| } else { |
| start_window = phase_delay; |
| length = 1; |
| } |
| } else { |
| single_point_failure = prev_match; |
| } |
| |
| if (length > max_len) { |
| max_window = start_window; |
| max_len = length; |
| } |
| |
| prev_match = cur_match; |
| phase_delay += 4; |
| } |
| |
| if (!max_len) { |
| ret = -EIO; |
| goto tuning_error; |
| } |
| |
| val = readl(&mmc_base->ac12); |
| if (!(val & AC12_SCLK_SEL)) { |
| ret = -EIO; |
| goto tuning_error; |
| } |
| /* |
| * Assign tuning value as a ratio of maximum pass window based |
| * on temperature |
| */ |
| if (temperature < -20000) |
| phase_delay = min(max_window + 4 * max_len - 24, |
| max_window + |
| DIV_ROUND_UP(13 * max_len, 16) * 4); |
| else if (temperature < 20000) |
| phase_delay = max_window + DIV_ROUND_UP(9 * max_len, 16) * 4; |
| else if (temperature < 40000) |
| phase_delay = max_window + DIV_ROUND_UP(8 * max_len, 16) * 4; |
| else if (temperature < 70000) |
| phase_delay = max_window + DIV_ROUND_UP(7 * max_len, 16) * 4; |
| else if (temperature < 90000) |
| phase_delay = max_window + DIV_ROUND_UP(5 * max_len, 16) * 4; |
| else if (temperature < 120000) |
| phase_delay = max_window + DIV_ROUND_UP(4 * max_len, 16) * 4; |
| else |
| phase_delay = max_window + DIV_ROUND_UP(3 * max_len, 16) * 4; |
| |
| /* |
| * Stage 2: Search for a single point failure near the chosen tuning |
| * value in two steps. First in the +3 to +10 range and then in the |
| * +2 to -10 range. If found, move away from it in the appropriate |
| * direction by the appropriate amount depending on the temperature. |
| */ |
| for (i = 3; i <= 10; i++) { |
| omap_hsmmc_set_dll(mmc, phase_delay + i); |
| if (mmc_send_tuning(mmc, opcode)) { |
| if (temperature < 10000) |
| phase_delay += i + 6; |
| else if (temperature < 20000) |
| phase_delay += i - 12; |
| else if (temperature < 70000) |
| phase_delay += i - 8; |
| else if (temperature < 90000) |
| phase_delay += i - 6; |
| else |
| phase_delay += i - 6; |
| |
| goto single_failure_found; |
| } |
| } |
| |
| for (i = 2; i >= -10; i--) { |
| omap_hsmmc_set_dll(mmc, phase_delay + i); |
| if (mmc_send_tuning(mmc, opcode)) { |
| if (temperature < 10000) |
| phase_delay += i + 12; |
| else if (temperature < 20000) |
| phase_delay += i + 8; |
| else if (temperature < 70000) |
| phase_delay += i + 8; |
| else if (temperature < 90000) |
| phase_delay += i + 10; |
| else |
| phase_delay += i + 12; |
| |
| goto single_failure_found; |
| } |
| } |
| |
| single_failure_found: |
| |
| omap_hsmmc_set_dll(mmc, phase_delay); |
| |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
| |
| return 0; |
| |
| tuning_error: |
| |
| omap_hsmmc_disable_tuning(mmc); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
| |
| return ret; |
| } |
| #endif |
| #endif |
| |
| static void mmc_enable_irq(struct mmc *mmc, struct mmc_cmd *cmd) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct hsmmc *mmc_base = priv->base_addr; |
| u32 irq_mask = INT_EN_MASK; |
| |
| /* |
| * TODO: Errata i802 indicates only DCRC interrupts can occur during |
| * tuning procedure and DCRC should be disabled. But see occurences |
| * of DEB, CIE, CEB, CCRC interupts during tuning procedure. These |
| * interrupts occur along with BRR, so the data is actually in the |
| * buffer. It has to be debugged why these interrutps occur |
| */ |
| if (cmd && mmc_is_tuning_cmd(cmd->cmdidx)) |
| irq_mask &= ~(IE_DEB | IE_DCRC | IE_CIE | IE_CEB | IE_CCRC); |
| |
| writel(irq_mask, &mmc_base->ie); |
| } |
| |
| static int omap_hsmmc_init_setup(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct hsmmc *mmc_base; |
| unsigned int reg_val; |
| unsigned int dsor; |
| ulong start; |
| |
| mmc_base = priv->base_addr; |
| mmc_board_init(mmc); |
| |
| writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, |
| &mmc_base->sysconfig); |
| start = get_timer(0); |
| while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for cc2!\n", __func__); |
| return -ETIMEDOUT; |
| } |
| } |
| writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); |
| start = get_timer(0); |
| while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for softresetall!\n", |
| __func__); |
| return -ETIMEDOUT; |
| } |
| } |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| reg_val = readl(&mmc_base->hl_hwinfo); |
| if (reg_val & MADMA_EN) |
| priv->controller_flags |= OMAP_HSMMC_USE_ADMA; |
| #endif |
| |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| reg_val = omap_hsmmc_set_capabilities(mmc); |
| omap_hsmmc_conf_bus_power(mmc, (reg_val & VS33_3V3SUP) ? |
| MMC_SIGNAL_VOLTAGE_330 : MMC_SIGNAL_VOLTAGE_180); |
| #else |
| writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V3, &mmc_base->hctl); |
| writel(readl(&mmc_base->capa) | VS33_3V3SUP | VS18_1V8SUP, |
| &mmc_base->capa); |
| #endif |
| |
| reg_val = readl(&mmc_base->con) & RESERVED_MASK; |
| |
| writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | |
| MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | |
| HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); |
| |
| dsor = 240; |
| mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), |
| (ICE_STOP | DTO_15THDTO)); |
| mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, |
| (dsor << CLKD_OFFSET) | ICE_OSCILLATE); |
| start = get_timer(0); |
| while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for ics!\n", __func__); |
| return -ETIMEDOUT; |
| } |
| } |
| writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
| |
| writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); |
| |
| mmc_enable_irq(mmc, NULL); |
| |
| #if !CONFIG_IS_ENABLED(DM_MMC) |
| mmc_init_stream(mmc_base); |
| #endif |
| |
| return 0; |
| } |
| |
| /* |
| * MMC controller internal finite state machine reset |
| * |
| * Used to reset command or data internal state machines, using respectively |
| * SRC or SRD bit of SYSCTL register |
| */ |
| static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit) |
| { |
| ulong start; |
| |
| mmc_reg_out(&mmc_base->sysctl, bit, bit); |
| |
| /* |
| * CMD(DAT) lines reset procedures are slightly different |
| * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx). |
| * According to OMAP3 TRM: |
| * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it |
| * returns to 0x0. |
| * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset |
| * procedure steps must be as follows: |
| * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in |
| * MMCHS_SYSCTL register (SD_SYSCTL for AM335x). |
| * 2. Poll the SRC(SRD) bit until it is set to 0x1. |
| * 3. Wait until the SRC (SRD) bit returns to 0x0 |
| * (reset procedure is completed). |
| */ |
| #if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \ |
| defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX) |
| if (!(readl(&mmc_base->sysctl) & bit)) { |
| start = get_timer(0); |
| while (!(readl(&mmc_base->sysctl) & bit)) { |
| if (get_timer(0) - start > MMC_TIMEOUT_MS) |
| return; |
| } |
| } |
| #endif |
| start = get_timer(0); |
| while ((readl(&mmc_base->sysctl) & bit) != 0) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for sysctl %x to clear\n", |
| __func__, bit); |
| return; |
| } |
| } |
| } |
| |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| static void omap_hsmmc_adma_desc(struct mmc *mmc, char *buf, u16 len, bool end) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct omap_hsmmc_adma_desc *desc; |
| u8 attr; |
| |
| desc = &priv->adma_desc_table[priv->desc_slot]; |
| |
| attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA; |
| if (!end) |
| priv->desc_slot++; |
| else |
| attr |= ADMA_DESC_ATTR_END; |
| |
| desc->len = len; |
| desc->addr = (u32)buf; |
| desc->reserved = 0; |
| desc->attr = attr; |
| } |
| |
| static void omap_hsmmc_prepare_adma_table(struct mmc *mmc, |
| struct mmc_data *data) |
| { |
| uint total_len = data->blocksize * data->blocks; |
| uint desc_count = DIV_ROUND_UP(total_len, ADMA_MAX_LEN); |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| int i = desc_count; |
| char *buf; |
| |
| priv->desc_slot = 0; |
| priv->adma_desc_table = (struct omap_hsmmc_adma_desc *) |
| memalign(ARCH_DMA_MINALIGN, desc_count * |
| sizeof(struct omap_hsmmc_adma_desc)); |
| |
| if (data->flags & MMC_DATA_READ) |
| buf = data->dest; |
| else |
| buf = (char *)data->src; |
| |
| while (--i) { |
| omap_hsmmc_adma_desc(mmc, buf, ADMA_MAX_LEN, false); |
| buf += ADMA_MAX_LEN; |
| total_len -= ADMA_MAX_LEN; |
| } |
| |
| omap_hsmmc_adma_desc(mmc, buf, total_len, true); |
| |
| flush_dcache_range((long)priv->adma_desc_table, |
| (long)priv->adma_desc_table + |
| ROUND(desc_count * |
| sizeof(struct omap_hsmmc_adma_desc), |
| ARCH_DMA_MINALIGN)); |
| } |
| |
| static void omap_hsmmc_prepare_data(struct mmc *mmc, struct mmc_data *data) |
| { |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 val; |
| char *buf; |
| |
| mmc_base = priv->base_addr; |
| omap_hsmmc_prepare_adma_table(mmc, data); |
| |
| if (data->flags & MMC_DATA_READ) |
| buf = data->dest; |
| else |
| buf = (char *)data->src; |
| |
| val = readl(&mmc_base->hctl); |
| val |= DMA_SELECT; |
| writel(val, &mmc_base->hctl); |
| |
| val = readl(&mmc_base->con); |
| val |= DMA_MASTER; |
| writel(val, &mmc_base->con); |
| |
| writel((u32)priv->adma_desc_table, &mmc_base->admasal); |
| |
| flush_dcache_range((u32)buf, |
| (u32)buf + |
| ROUND(data->blocksize * data->blocks, |
| ARCH_DMA_MINALIGN)); |
| } |
| |
| static void omap_hsmmc_dma_cleanup(struct mmc *mmc) |
| { |
| struct hsmmc *mmc_base; |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| u32 val; |
| |
| mmc_base = priv->base_addr; |
| |
| val = readl(&mmc_base->con); |
| val &= ~DMA_MASTER; |
| writel(val, &mmc_base->con); |
| |
| val = readl(&mmc_base->hctl); |
| val &= ~DMA_SELECT; |
| writel(val, &mmc_base->hctl); |
| |
| kfree(priv->adma_desc_table); |
| } |
| #else |
| #define omap_hsmmc_adma_desc |
| #define omap_hsmmc_prepare_adma_table |
| #define omap_hsmmc_prepare_data |
| #define omap_hsmmc_dma_cleanup |
| #endif |
| |
| #if !CONFIG_IS_ENABLED(DM_MMC) |
| static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, |
| struct mmc_data *data) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| #else |
| static int omap_hsmmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, |
| struct mmc_data *data) |
| { |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
| struct mmc *mmc = upriv->mmc; |
| #endif |
| struct hsmmc *mmc_base; |
| unsigned int flags, mmc_stat; |
| ulong start; |
| priv->last_cmd = cmd->cmdidx; |
| |
| mmc_base = priv->base_addr; |
| |
| if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION) |
| return 0; |
| |
| start = get_timer(0); |
| while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting on cmd inhibit to clear\n", |
| __func__); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
| return -ETIMEDOUT; |
| } |
| } |
| writel(0xFFFFFFFF, &mmc_base->stat); |
| if (readl(&mmc_base->stat)) { |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
| } |
| |
| /* |
| * CMDREG |
| * CMDIDX[13:8] : Command index |
| * DATAPRNT[5] : Data Present Select |
| * ENCMDIDX[4] : Command Index Check Enable |
| * ENCMDCRC[3] : Command CRC Check Enable |
| * RSPTYP[1:0] |
| * 00 = No Response |
| * 01 = Length 136 |
| * 10 = Length 48 |
| * 11 = Length 48 Check busy after response |
| */ |
| /* Delay added before checking the status of frq change |
| * retry not supported by mmc.c(core file) |
| */ |
| if (cmd->cmdidx == SD_CMD_APP_SEND_SCR) |
| udelay(50000); /* wait 50 ms */ |
| |
| if (!(cmd->resp_type & MMC_RSP_PRESENT)) |
| flags = 0; |
| else if (cmd->resp_type & MMC_RSP_136) |
| flags = RSP_TYPE_LGHT136 | CICE_NOCHECK; |
| else if (cmd->resp_type & MMC_RSP_BUSY) |
| flags = RSP_TYPE_LGHT48B; |
| else |
| flags = RSP_TYPE_LGHT48; |
| |
| /* enable default flags */ |
| flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | |
| MSBS_SGLEBLK); |
| flags &= ~(ACEN_ENABLE | BCE_ENABLE | DE_ENABLE); |
| |
| if (cmd->resp_type & MMC_RSP_CRC) |
| flags |= CCCE_CHECK; |
| if (cmd->resp_type & MMC_RSP_OPCODE) |
| flags |= CICE_CHECK; |
| |
| if (data) { |
| if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) || |
| (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) { |
| flags |= (MSBS_MULTIBLK | BCE_ENABLE | ACEN_ENABLE); |
| data->blocksize = 512; |
| writel(data->blocksize | (data->blocks << 16), |
| &mmc_base->blk); |
| } else |
| writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk); |
| |
| if (data->flags & MMC_DATA_READ) |
| flags |= (DP_DATA | DDIR_READ); |
| else |
| flags |= (DP_DATA | DDIR_WRITE); |
| |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) && |
| !mmc_is_tuning_cmd(cmd->cmdidx)) { |
| omap_hsmmc_prepare_data(mmc, data); |
| flags |= DE_ENABLE; |
| } |
| #endif |
| } |
| |
| mmc_enable_irq(mmc, cmd); |
| |
| writel(cmd->cmdarg, &mmc_base->arg); |
| udelay(20); /* To fix "No status update" error on eMMC */ |
| writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd); |
| |
| start = get_timer(0); |
| do { |
| mmc_stat = readl(&mmc_base->stat); |
| if (get_timer(start) > MAX_RETRY_MS) { |
| printf("%s : timeout: No status update\n", __func__); |
| return -ETIMEDOUT; |
| } |
| } while (!mmc_stat); |
| |
| if ((mmc_stat & IE_CTO) != 0) { |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
| return -ETIMEDOUT; |
| } else if ((mmc_stat & ERRI_MASK) != 0) |
| return -1; |
| |
| if (mmc_stat & CC_MASK) { |
| writel(CC_MASK, &mmc_base->stat); |
| if (cmd->resp_type & MMC_RSP_PRESENT) { |
| if (cmd->resp_type & MMC_RSP_136) { |
| /* response type 2 */ |
| cmd->response[3] = readl(&mmc_base->rsp10); |
| cmd->response[2] = readl(&mmc_base->rsp32); |
| cmd->response[1] = readl(&mmc_base->rsp54); |
| cmd->response[0] = readl(&mmc_base->rsp76); |
| } else |
| /* response types 1, 1b, 3, 4, 5, 6 */ |
| cmd->response[0] = readl(&mmc_base->rsp10); |
| } |
| } |
| |
| #ifdef CONFIG_MMC_OMAP_HS_ADMA |
| if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) && data && |
| !mmc_is_tuning_cmd(cmd->cmdidx)) { |
| u32 sz_mb, timeout; |
| |
| if (mmc_stat & IE_ADMAE) { |
| omap_hsmmc_dma_cleanup(mmc); |
| return -EIO; |
| } |
| |
| sz_mb = DIV_ROUND_UP(data->blocksize * data->blocks, 1 << 20); |
| timeout = sz_mb * DMA_TIMEOUT_PER_MB; |
| if (timeout < MAX_RETRY_MS) |
| timeout = MAX_RETRY_MS; |
| |
| start = get_timer(0); |
| do { |
| mmc_stat = readl(&mmc_base->stat); |
| if (mmc_stat & TC_MASK) { |
| writel(readl(&mmc_base->stat) | TC_MASK, |
| &mmc_base->stat); |
| break; |
| } |
| if (get_timer(start) > timeout) { |
| printf("%s : DMA timeout: No status update\n", |
| __func__); |
| return -ETIMEDOUT; |
| } |
| } while (1); |
| |
| omap_hsmmc_dma_cleanup(mmc); |
| return 0; |
| } |
| #endif |
| |
| if (data && (data->flags & MMC_DATA_READ)) { |
| mmc_read_data(mmc_base, data->dest, |
| data->blocksize * data->blocks); |
| } else if (data && (data->flags & MMC_DATA_WRITE)) { |
| mmc_write_data(mmc_base, data->src, |
| data->blocksize * data->blocks); |
| } |
| return 0; |
| } |
| |
| static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size) |
| { |
| unsigned int *output_buf = (unsigned int *)buf; |
| unsigned int mmc_stat; |
| unsigned int count; |
| |
| /* |
| * Start Polled Read |
| */ |
| count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; |
| count /= 4; |
| |
| while (size) { |
| ulong start = get_timer(0); |
| do { |
| mmc_stat = readl(&mmc_base->stat); |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for status!\n", |
| __func__); |
| return -ETIMEDOUT; |
| } |
| } while (mmc_stat == 0); |
| |
| if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| |
| if ((mmc_stat & ERRI_MASK) != 0) |
| return 1; |
| |
| if (mmc_stat & BRR_MASK) { |
| unsigned int k; |
| |
| writel(readl(&mmc_base->stat) | BRR_MASK, |
| &mmc_base->stat); |
| for (k = 0; k < count; k++) { |
| *output_buf = readl(&mmc_base->data); |
| output_buf++; |
| } |
| size -= (count*4); |
| } |
| |
| if (mmc_stat & BWR_MASK) |
| writel(readl(&mmc_base->stat) | BWR_MASK, |
| &mmc_base->stat); |
| |
| if (mmc_stat & TC_MASK) { |
| writel(readl(&mmc_base->stat) | TC_MASK, |
| &mmc_base->stat); |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| #if CONFIG_IS_ENABLED(MMC_WRITE) |
| static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
| unsigned int size) |
| { |
| unsigned int *input_buf = (unsigned int *)buf; |
| unsigned int mmc_stat; |
| unsigned int count; |
| |
| /* |
| * Start Polled Write |
| */ |
| count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; |
| count /= 4; |
| |
| while (size) { |
| ulong start = get_timer(0); |
| do { |
| mmc_stat = readl(&mmc_base->stat); |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for status!\n", |
| __func__); |
| return -ETIMEDOUT; |
| } |
| } while (mmc_stat == 0); |
| |
| if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) |
| mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| |
| if ((mmc_stat & ERRI_MASK) != 0) |
| return 1; |
| |
| if (mmc_stat & BWR_MASK) { |
| unsigned int k; |
| |
| writel(readl(&mmc_base->stat) | BWR_MASK, |
| &mmc_base->stat); |
| for (k = 0; k < count; k++) { |
| writel(*input_buf, &mmc_base->data); |
| input_buf++; |
| } |
| size -= (count*4); |
| } |
| |
| if (mmc_stat & BRR_MASK) |
| writel(readl(&mmc_base->stat) | BRR_MASK, |
| &mmc_base->stat); |
| |
| if (mmc_stat & TC_MASK) { |
| writel(readl(&mmc_base->stat) | TC_MASK, |
| &mmc_base->stat); |
| break; |
| } |
| } |
| return 0; |
| } |
| #else |
| static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
| unsigned int size) |
| { |
| return -ENOTSUPP; |
| } |
| #endif |
| static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base) |
| { |
| writel(readl(&mmc_base->sysctl) & ~CEN_ENABLE, &mmc_base->sysctl); |
| } |
| |
| static void omap_hsmmc_start_clock(struct hsmmc *mmc_base) |
| { |
| writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
| } |
| |
| static void omap_hsmmc_set_clock(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct hsmmc *mmc_base; |
| unsigned int dsor = 0; |
| ulong start; |
| |
| mmc_base = priv->base_addr; |
| omap_hsmmc_stop_clock(mmc_base); |
| |
| /* TODO: Is setting DTO required here? */ |
| mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK), |
| (ICE_STOP | DTO_15THDTO)); |
| |
| if (mmc->clock != 0) { |
| dsor = DIV_ROUND_UP(MMC_CLOCK_REFERENCE * 1000000, mmc->clock); |
| if (dsor > CLKD_MAX) |
| dsor = CLKD_MAX; |
| } else { |
| dsor = CLKD_MAX; |
| } |
| |
| mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, |
| (dsor << CLKD_OFFSET) | ICE_OSCILLATE); |
| |
| start = get_timer(0); |
| while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { |
| if (get_timer(0) - start > MAX_RETRY_MS) { |
| printf("%s: timedout waiting for ics!\n", __func__); |
| return; |
| } |
| } |
| |
| priv->clock = MMC_CLOCK_REFERENCE * 1000000 / dsor; |
| mmc->clock = priv->clock; |
| omap_hsmmc_start_clock(mmc_base); |
| } |
| |
| static void omap_hsmmc_set_bus_width(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct hsmmc *mmc_base; |
| |
| mmc_base = priv->base_addr; |
| /* configue bus width */ |
| switch (mmc->bus_width) { |
| case 8: |
| writel(readl(&mmc_base->con) | DTW_8_BITMODE, |
| &mmc_base->con); |
| break; |
| |
| case 4: |
| writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, |
| &mmc_base->con); |
| writel(readl(&mmc_base->hctl) | DTW_4_BITMODE, |
| &mmc_base->hctl); |
| break; |
| |
| case 1: |
| default: |
| writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, |
| &mmc_base->con); |
| writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE, |
| &mmc_base->hctl); |
| break; |
| } |
| |
| priv->bus_width = mmc->bus_width; |
| } |
| |
| #if !CONFIG_IS_ENABLED(DM_MMC) |
| static int omap_hsmmc_set_ios(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| #else |
| static int omap_hsmmc_set_ios(struct udevice *dev) |
| { |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
| struct mmc *mmc = upriv->mmc; |
| #endif |
| struct hsmmc *mmc_base = priv->base_addr; |
| int ret = 0; |
| |
| if (priv->bus_width != mmc->bus_width) |
| omap_hsmmc_set_bus_width(mmc); |
| |
| if (priv->clock != mmc->clock) |
| omap_hsmmc_set_clock(mmc); |
| |
| if (mmc->clk_disable) |
| omap_hsmmc_stop_clock(mmc_base); |
| else |
| omap_hsmmc_start_clock(mmc_base); |
| |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| if (priv->mode != mmc->selected_mode) |
| omap_hsmmc_set_timing(mmc); |
| |
| #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) |
| if (priv->signal_voltage != mmc->signal_voltage) |
| ret = omap_hsmmc_set_signal_voltage(mmc); |
| #endif |
| #endif |
| return ret; |
| } |
| |
| #ifdef OMAP_HSMMC_USE_GPIO |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| static int omap_hsmmc_getcd(struct udevice *dev) |
| { |
| int value = -1; |
| #if CONFIG_IS_ENABLED(DM_GPIO) |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| value = dm_gpio_get_value(&priv->cd_gpio); |
| #endif |
| /* if no CD return as 1 */ |
| if (value < 0) |
| return 1; |
| |
| return value; |
| } |
| |
| static int omap_hsmmc_getwp(struct udevice *dev) |
| { |
| int value = 0; |
| #if CONFIG_IS_ENABLED(DM_GPIO) |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| value = dm_gpio_get_value(&priv->wp_gpio); |
| #endif |
| /* if no WP return as 0 */ |
| if (value < 0) |
| return 0; |
| return value; |
| } |
| #else |
| static int omap_hsmmc_getcd(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| int cd_gpio; |
| |
| /* if no CD return as 1 */ |
| cd_gpio = priv->cd_gpio; |
| if (cd_gpio < 0) |
| return 1; |
| |
| /* NOTE: assumes card detect signal is active-low */ |
| return !gpio_get_value(cd_gpio); |
| } |
| |
| static int omap_hsmmc_getwp(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| int wp_gpio; |
| |
| /* if no WP return as 0 */ |
| wp_gpio = priv->wp_gpio; |
| if (wp_gpio < 0) |
| return 0; |
| |
| /* NOTE: assumes write protect signal is active-high */ |
| return gpio_get_value(wp_gpio); |
| } |
| #endif |
| #endif |
| |
| #if CONFIG_IS_ENABLED(DM_MMC) |
| static const struct dm_mmc_ops omap_hsmmc_ops = { |
| .send_cmd = omap_hsmmc_send_cmd, |
| .set_ios = omap_hsmmc_set_ios, |
| #ifdef OMAP_HSMMC_USE_GPIO |
| .get_cd = omap_hsmmc_getcd, |
| .get_wp = omap_hsmmc_getwp, |
| #endif |
| #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING) |
| .execute_tuning = omap_hsmmc_execute_tuning, |
| #endif |
| .wait_dat0 = omap_hsmmc_wait_dat0, |
| }; |
| #else |
| static const struct mmc_ops omap_hsmmc_ops = { |
| .send_cmd = omap_hsmmc_send_cmd, |
| .set_ios = omap_hsmmc_set_ios, |
| .init = omap_hsmmc_init_setup, |
| #ifdef OMAP_HSMMC_USE_GPIO |
| .getcd = omap_hsmmc_getcd, |
| .getwp = omap_hsmmc_getwp, |
| #endif |
| }; |
| #endif |
| |
| #if !CONFIG_IS_ENABLED(DM_MMC) |
| int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio, |
| int wp_gpio) |
| { |
| struct mmc *mmc; |
| struct omap_hsmmc_data *priv; |
| struct mmc_config *cfg; |
| uint host_caps_val; |
| |
| priv = calloc(1, sizeof(*priv)); |
| if (priv == NULL) |
| return -1; |
| |
| host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS; |
| |
| switch (dev_index) { |
| case 0: |
| priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE; |
| break; |
| #ifdef OMAP_HSMMC2_BASE |
| case 1: |
| priv->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE; |
| #if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \ |
| defined(CONFIG_DRA7XX) || defined(CONFIG_AM33XX) || \ |
| defined(CONFIG_AM43XX) || defined(CONFIG_ARCH_KEYSTONE)) && \ |
| defined(CONFIG_HSMMC2_8BIT) |
| /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */ |
| host_caps_val |= MMC_MODE_8BIT; |
| #endif |
| break; |
| #endif |
| #ifdef OMAP_HSMMC3_BASE |
| case 2: |
| priv->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE; |
| #if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT) |
| /* Enable 8-bit interface for eMMC on DRA7XX */ |
| host_caps_val |= MMC_MODE_8BIT; |
| #endif |
| break; |
| #endif |
| default: |
| priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE; |
| return 1; |
| } |
| #ifdef OMAP_HSMMC_USE_GPIO |
| /* on error gpio values are set to -1, which is what we want */ |
| priv->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd"); |
| priv->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp"); |
| #endif |
| |
| cfg = &priv->cfg; |
| |
| cfg->name = "OMAP SD/MMC"; |
| cfg->ops = &omap_hsmmc_ops; |
| |
| cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; |
| cfg->host_caps = host_caps_val & ~host_caps_mask; |
| |
| cfg->f_min = 400000; |
| |
| if (f_max != 0) |
| cfg->f_max = f_max; |
| else { |
| if (cfg->host_caps & MMC_MODE_HS) { |
| if (cfg->host_caps & MMC_MODE_HS_52MHz) |
| cfg->f_max = 52000000; |
| else |
| cfg->f_max = 26000000; |
| } else |
| cfg->f_max = 20000000; |
| } |
| |
| cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; |
| |
| #if defined(CONFIG_OMAP34XX) |
| /* |
| * Silicon revs 2.1 and older do not support multiblock transfers. |
| */ |
| if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21)) |
| cfg->b_max = 1; |
| #endif |
| |
| mmc = mmc_create(cfg, priv); |
| if (mmc == NULL) |
| return -1; |
| |
| return 0; |
| } |
| #else |
| |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| static struct pad_conf_entry * |
| omap_hsmmc_get_pad_conf_entry(const fdt32_t *pinctrl, int count) |
| { |
| int index = 0; |
| struct pad_conf_entry *padconf; |
| |
| padconf = (struct pad_conf_entry *)malloc(sizeof(*padconf) * count); |
| if (!padconf) { |
| debug("failed to allocate memory\n"); |
| return 0; |
| } |
| |
| while (index < count) { |
| padconf[index].offset = fdt32_to_cpu(pinctrl[2 * index]); |
| padconf[index].val = fdt32_to_cpu(pinctrl[2 * index + 1]); |
| index++; |
| } |
| |
| return padconf; |
| } |
| |
| static struct iodelay_cfg_entry * |
| omap_hsmmc_get_iodelay_cfg_entry(const fdt32_t *pinctrl, int count) |
| { |
| int index = 0; |
| struct iodelay_cfg_entry *iodelay; |
| |
| iodelay = (struct iodelay_cfg_entry *)malloc(sizeof(*iodelay) * count); |
| if (!iodelay) { |
| debug("failed to allocate memory\n"); |
| return 0; |
| } |
| |
| while (index < count) { |
| iodelay[index].offset = fdt32_to_cpu(pinctrl[3 * index]); |
| iodelay[index].a_delay = fdt32_to_cpu(pinctrl[3 * index + 1]); |
| iodelay[index].g_delay = fdt32_to_cpu(pinctrl[3 * index + 2]); |
| index++; |
| } |
| |
| return iodelay; |
| } |
| |
| static const fdt32_t *omap_hsmmc_get_pinctrl_entry(u32 phandle, |
| const char *name, int *len) |
| { |
| const void *fdt = gd->fdt_blob; |
| int offset; |
| const fdt32_t *pinctrl; |
| |
| offset = fdt_node_offset_by_phandle(fdt, phandle); |
| if (offset < 0) { |
| debug("failed to get pinctrl node %s.\n", |
| fdt_strerror(offset)); |
| return 0; |
| } |
| |
| pinctrl = fdt_getprop(fdt, offset, name, len); |
| if (!pinctrl) { |
| debug("failed to get property %s\n", name); |
| return 0; |
| } |
| |
| return pinctrl; |
| } |
| |
| static uint32_t omap_hsmmc_get_pad_conf_phandle(struct mmc *mmc, |
| char *prop_name) |
| { |
| const void *fdt = gd->fdt_blob; |
| const __be32 *phandle; |
| int node = dev_of_offset(mmc->dev); |
| |
| phandle = fdt_getprop(fdt, node, prop_name, NULL); |
| if (!phandle) { |
| debug("failed to get property %s\n", prop_name); |
| return 0; |
| } |
| |
| return fdt32_to_cpu(*phandle); |
| } |
| |
| static uint32_t omap_hsmmc_get_iodelay_phandle(struct mmc *mmc, |
| char *prop_name) |
| { |
| const void *fdt = gd->fdt_blob; |
| const __be32 *phandle; |
| int len; |
| int count; |
| int node = dev_of_offset(mmc->dev); |
| |
| phandle = fdt_getprop(fdt, node, prop_name, &len); |
| if (!phandle) { |
| debug("failed to get property %s\n", prop_name); |
| return 0; |
| } |
| |
| /* No manual mode iodelay values if count < 2 */ |
| count = len / sizeof(*phandle); |
| if (count < 2) |
| return 0; |
| |
| return fdt32_to_cpu(*(phandle + 1)); |
| } |
| |
| static struct pad_conf_entry * |
| omap_hsmmc_get_pad_conf(struct mmc *mmc, char *prop_name, int *npads) |
| { |
| int len; |
| int count; |
| struct pad_conf_entry *padconf; |
| u32 phandle; |
| const fdt32_t *pinctrl; |
| |
| phandle = omap_hsmmc_get_pad_conf_phandle(mmc, prop_name); |
| if (!phandle) |
| return ERR_PTR(-EINVAL); |
| |
| pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-single,pins", |
| &len); |
| if (!pinctrl) |
| return ERR_PTR(-EINVAL); |
| |
| count = (len / sizeof(*pinctrl)) / 2; |
| padconf = omap_hsmmc_get_pad_conf_entry(pinctrl, count); |
| if (!padconf) |
| return ERR_PTR(-EINVAL); |
| |
| *npads = count; |
| |
| return padconf; |
| } |
| |
| static struct iodelay_cfg_entry * |
| omap_hsmmc_get_iodelay(struct mmc *mmc, char *prop_name, int *niodelay) |
| { |
| int len; |
| int count; |
| struct iodelay_cfg_entry *iodelay; |
| u32 phandle; |
| const fdt32_t *pinctrl; |
| |
| phandle = omap_hsmmc_get_iodelay_phandle(mmc, prop_name); |
| /* Not all modes have manual mode iodelay values. So its not fatal */ |
| if (!phandle) |
| return 0; |
| |
| pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-pin-array", |
| &len); |
| if (!pinctrl) |
| return ERR_PTR(-EINVAL); |
| |
| count = (len / sizeof(*pinctrl)) / 3; |
| iodelay = omap_hsmmc_get_iodelay_cfg_entry(pinctrl, count); |
| if (!iodelay) |
| return ERR_PTR(-EINVAL); |
| |
| *niodelay = count; |
| |
| return iodelay; |
| } |
| |
| static struct omap_hsmmc_pinctrl_state * |
| omap_hsmmc_get_pinctrl_by_mode(struct mmc *mmc, char *mode) |
| { |
| int index; |
| int npads = 0; |
| int niodelays = 0; |
| const void *fdt = gd->fdt_blob; |
| int node = dev_of_offset(mmc->dev); |
| char prop_name[11]; |
| struct omap_hsmmc_pinctrl_state *pinctrl_state; |
| |
| pinctrl_state = (struct omap_hsmmc_pinctrl_state *) |
| malloc(sizeof(*pinctrl_state)); |
| if (!pinctrl_state) { |
| debug("failed to allocate memory\n"); |
| return 0; |
| } |
| |
| index = fdt_stringlist_search(fdt, node, "pinctrl-names", mode); |
| if (index < 0) { |
| debug("fail to find %s mode %s\n", mode, fdt_strerror(index)); |
| goto err_pinctrl_state; |
| } |
| |
| sprintf(prop_name, "pinctrl-%d", index); |
| |
| pinctrl_state->padconf = omap_hsmmc_get_pad_conf(mmc, prop_name, |
| &npads); |
| if (IS_ERR(pinctrl_state->padconf)) |
| goto err_pinctrl_state; |
| pinctrl_state->npads = npads; |
| |
| pinctrl_state->iodelay = omap_hsmmc_get_iodelay(mmc, prop_name, |
| &niodelays); |
| if (IS_ERR(pinctrl_state->iodelay)) |
| goto err_padconf; |
| pinctrl_state->niodelays = niodelays; |
| |
| return pinctrl_state; |
| |
| err_padconf: |
| kfree(pinctrl_state->padconf); |
| |
| err_pinctrl_state: |
| kfree(pinctrl_state); |
| return 0; |
| } |
| |
| #define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode, optional) \ |
| do { \ |
| struct omap_hsmmc_pinctrl_state *s = NULL; \ |
| char str[20]; \ |
| if (!(cfg->host_caps & capmask)) \ |
| break; \ |
| \ |
| if (priv->hw_rev) { \ |
| sprintf(str, "%s-%s", #mode, priv->hw_rev); \ |
| s = omap_hsmmc_get_pinctrl_by_mode(mmc, str); \ |
| } \ |
| \ |
| if (!s) \ |
| s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \ |
| \ |
| if (!s && !optional) { \ |
| debug("%s: no pinctrl for %s\n", \ |
| mmc->dev->name, #mode); \ |
| cfg->host_caps &= ~(capmask); \ |
| } else { \ |
| priv->mode##_pinctrl_state = s; \ |
| } \ |
| } while (0) |
| |
| static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc) |
| { |
| struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc); |
| struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc); |
| struct omap_hsmmc_pinctrl_state *default_pinctrl; |
| |
| if (!(priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY)) |
| return 0; |
| |
| default_pinctrl = omap_hsmmc_get_pinctrl_by_mode(mmc, "default"); |
| if (!default_pinctrl) { |
| printf("no pinctrl state for default mode\n"); |
| return -EINVAL; |
| } |
| |
| priv->default_pinctrl_state = default_pinctrl; |
| |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR104), sdr104, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR50), sdr50, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_DDR50), ddr50, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR25), sdr25, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR12), sdr12, false); |
| |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_HS_200), hs200_1_8v, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_DDR_52), ddr_1_8v, false); |
| OMAP_HSMMC_SETUP_PINCTRL(MMC_MODE_HS, hs, true); |
| |
| return 0; |
| } |
| #endif |
| |
| #if CONFIG_IS_ENABLED(OF_REAL) |
| #ifdef CONFIG_OMAP54XX |
| __weak const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr) |
| { |
| return NULL; |
| } |
| #endif |
| |
| static int omap_hsmmc_of_to_plat(struct udevice *dev) |
| { |
| struct omap_hsmmc_plat *plat = dev_get_plat(dev); |
| struct omap_mmc_of_data *of_data = (void *)dev_get_driver_data(dev); |
| |
| struct mmc_config *cfg = &plat->cfg; |
| #ifdef CONFIG_OMAP54XX |
| const struct mmc_platform_fixups *fixups; |
| #endif |
| const void *fdt = gd->fdt_blob; |
| int node = dev_of_offset(dev); |
| int ret; |
| |
| plat->base_addr = map_physmem(dev_read_addr(dev), |
| sizeof(struct hsmmc *), |
| MAP_NOCACHE); |
| |
| ret = mmc_of_parse(dev, cfg); |
| if (ret < 0) |
| return ret; |
| |
| if (!cfg->f_max) |
| cfg->f_max = 52000000; |
| cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; |
| 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; |
| if (fdtdec_get_bool(fdt, node, "ti,dual-volt")) |
| plat->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT; |
| if (fdtdec_get_bool(fdt, node, "no-1-8-v")) |
| plat->controller_flags |= OMAP_HSMMC_NO_1_8_V; |
| if (of_data) |
| plat->controller_flags |= of_data->controller_flags; |
| |
| #ifdef CONFIG_OMAP54XX |
| fixups = platform_fixups_mmc(dev_read_addr(dev)); |
| if (fixups) { |
| plat->hw_rev = fixups->hw_rev; |
| cfg->host_caps &= ~fixups->unsupported_caps; |
| cfg->f_max = fixups->max_freq; |
| } |
| #endif |
| |
| return 0; |
| } |
| #endif |
| |
| #ifdef CONFIG_BLK |
| |
| static int omap_hsmmc_bind(struct udevice *dev) |
| { |
| struct omap_hsmmc_plat *plat = dev_get_plat(dev); |
| plat->mmc = calloc(1, sizeof(struct mmc)); |
| return mmc_bind(dev, plat->mmc, &plat->cfg); |
| } |
| #endif |
| static int omap_hsmmc_probe(struct udevice *dev) |
| { |
| struct omap_hsmmc_plat *plat = dev_get_plat(dev); |
| struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
| struct omap_hsmmc_data *priv = dev_get_priv(dev); |
| struct mmc_config *cfg = &plat->cfg; |
| struct mmc *mmc; |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| int ret; |
| #endif |
| |
| cfg->name = "OMAP SD/MMC"; |
| priv->base_addr = plat->base_addr; |
| priv->controller_flags = plat->controller_flags; |
| priv->hw_rev = plat->hw_rev; |
| |
| #ifdef CONFIG_BLK |
| mmc = plat->mmc; |
| #else |
| mmc = mmc_create(cfg, priv); |
| if (mmc == NULL) |
| return -1; |
| #endif |
| #if CONFIG_IS_ENABLED(DM_REGULATOR) |
| device_get_supply_regulator(dev, "pbias-supply", |
| &priv->pbias_supply); |
| #endif |
| #if defined(OMAP_HSMMC_USE_GPIO) |
| #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_GPIO) |
| gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN); |
| gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN); |
| #endif |
| #endif |
| |
| mmc->dev = dev; |
| upriv->mmc = mmc; |
| |
| #ifdef CONFIG_IODELAY_RECALIBRATION |
| ret = omap_hsmmc_get_pinctrl_state(mmc); |
| /* |
| * disable high speed modes for the platforms that require IO delay |
| * and for which we don't have this information |
| */ |
| if ((ret < 0) && |
| (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY)) { |
| priv->controller_flags &= ~OMAP_HSMMC_REQUIRE_IODELAY; |
| cfg->host_caps &= ~(MMC_CAP(MMC_HS_200) | MMC_CAP(MMC_DDR_52) | |
| UHS_CAPS); |
| } |
| #endif |
| |
| return omap_hsmmc_init_setup(mmc); |
| } |
| |
| #if CONFIG_IS_ENABLED(OF_REAL) |
| |
| static const struct omap_mmc_of_data dra7_mmc_of_data = { |
| .controller_flags = OMAP_HSMMC_REQUIRE_IODELAY, |
| }; |
| |
| static const struct udevice_id omap_hsmmc_ids[] = { |
| { .compatible = "ti,omap3-hsmmc" }, |
| { .compatible = "ti,omap4-hsmmc" }, |
| { .compatible = "ti,am33xx-hsmmc" }, |
| { .compatible = "ti,am335-sdhci" }, |
| { .compatible = "ti,dra7-hsmmc", .data = (ulong)&dra7_mmc_of_data }, |
| { } |
| }; |
| #endif |
| |
| U_BOOT_DRIVER(omap_hsmmc) = { |
| .name = "omap_hsmmc", |
| .id = UCLASS_MMC, |
| #if CONFIG_IS_ENABLED(OF_REAL) |
| .of_match = omap_hsmmc_ids, |
| .of_to_plat = omap_hsmmc_of_to_plat, |
| .plat_auto = sizeof(struct omap_hsmmc_plat), |
| #endif |
| #ifdef CONFIG_BLK |
| .bind = omap_hsmmc_bind, |
| #endif |
| .ops = &omap_hsmmc_ops, |
| .probe = omap_hsmmc_probe, |
| .priv_auto = sizeof(struct omap_hsmmc_data), |
| #if !CONFIG_IS_ENABLED(OF_CONTROL) |
| .flags = DM_FLAG_PRE_RELOC, |
| #endif |
| }; |
| #endif |