17d326930SKishon Vijay Abraham I /** 27d326930SKishon Vijay Abraham I * SDHCI Controller driver for TI's OMAP SoCs 37d326930SKishon Vijay Abraham I * 47d326930SKishon Vijay Abraham I * Copyright (C) 2017 Texas Instruments 57d326930SKishon Vijay Abraham I * Author: Kishon Vijay Abraham I <kishon@ti.com> 67d326930SKishon Vijay Abraham I * 77d326930SKishon Vijay Abraham I * This program is free software: you can redistribute it and/or modify 87d326930SKishon Vijay Abraham I * it under the terms of the GNU General Public License version 2 of 97d326930SKishon Vijay Abraham I * the License as published by the Free Software Foundation. 107d326930SKishon Vijay Abraham I * 117d326930SKishon Vijay Abraham I * This program is distributed in the hope that it will be useful, 127d326930SKishon Vijay Abraham I * but WITHOUT ANY WARRANTY; without even the implied warranty of 137d326930SKishon Vijay Abraham I * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 147d326930SKishon Vijay Abraham I * GNU General Public License for more details. 157d326930SKishon Vijay Abraham I * 167d326930SKishon Vijay Abraham I * You should have received a copy of the GNU General Public License 177d326930SKishon Vijay Abraham I * along with this program. If not, see <http://www.gnu.org/licenses/>. 187d326930SKishon Vijay Abraham I */ 197d326930SKishon Vijay Abraham I 207d326930SKishon Vijay Abraham I #include <linux/delay.h> 217d326930SKishon Vijay Abraham I #include <linux/mmc/slot-gpio.h> 227d326930SKishon Vijay Abraham I #include <linux/module.h> 237d326930SKishon Vijay Abraham I #include <linux/of.h> 247d326930SKishon Vijay Abraham I #include <linux/of_device.h> 257d326930SKishon Vijay Abraham I #include <linux/platform_device.h> 267d326930SKishon Vijay Abraham I #include <linux/pm_runtime.h> 277d326930SKishon Vijay Abraham I #include <linux/regulator/consumer.h> 288d20b2eaSKishon Vijay Abraham I #include <linux/pinctrl/consumer.h> 297d326930SKishon Vijay Abraham I 307d326930SKishon Vijay Abraham I #include "sdhci-pltfm.h" 317d326930SKishon Vijay Abraham I 327d326930SKishon Vijay Abraham I #define SDHCI_OMAP_CON 0x12c 337d326930SKishon Vijay Abraham I #define CON_DW8 BIT(5) 347d326930SKishon Vijay Abraham I #define CON_DMA_MASTER BIT(20) 3527ceb7e0SKishon Vijay Abraham I #define CON_DDR BIT(19) 3620ea26a1SKishon Vijay Abraham I #define CON_CLKEXTFREE BIT(16) 3720ea26a1SKishon Vijay Abraham I #define CON_PADEN BIT(15) 387d326930SKishon Vijay Abraham I #define CON_INIT BIT(1) 397d326930SKishon Vijay Abraham I #define CON_OD BIT(0) 407d326930SKishon Vijay Abraham I 419fc2cd76SKishon Vijay Abraham I #define SDHCI_OMAP_DLL 0x0134 429fc2cd76SKishon Vijay Abraham I #define DLL_SWT BIT(20) 439fc2cd76SKishon Vijay Abraham I #define DLL_FORCE_SR_C_SHIFT 13 449fc2cd76SKishon Vijay Abraham I #define DLL_FORCE_SR_C_MASK (0x7f << DLL_FORCE_SR_C_SHIFT) 459fc2cd76SKishon Vijay Abraham I #define DLL_FORCE_VALUE BIT(12) 469fc2cd76SKishon Vijay Abraham I #define DLL_CALIB BIT(1) 479fc2cd76SKishon Vijay Abraham I 487d326930SKishon Vijay Abraham I #define SDHCI_OMAP_CMD 0x20c 497d326930SKishon Vijay Abraham I 5020ea26a1SKishon Vijay Abraham I #define SDHCI_OMAP_PSTATE 0x0224 5120ea26a1SKishon Vijay Abraham I #define PSTATE_DLEV_DAT0 BIT(20) 5220ea26a1SKishon Vijay Abraham I #define PSTATE_DATI BIT(1) 5320ea26a1SKishon Vijay Abraham I 547d326930SKishon Vijay Abraham I #define SDHCI_OMAP_HCTL 0x228 557d326930SKishon Vijay Abraham I #define HCTL_SDBP BIT(8) 567d326930SKishon Vijay Abraham I #define HCTL_SDVS_SHIFT 9 577d326930SKishon Vijay Abraham I #define HCTL_SDVS_MASK (0x7 << HCTL_SDVS_SHIFT) 587d326930SKishon Vijay Abraham I #define HCTL_SDVS_33 (0x7 << HCTL_SDVS_SHIFT) 597d326930SKishon Vijay Abraham I #define HCTL_SDVS_30 (0x6 << HCTL_SDVS_SHIFT) 607d326930SKishon Vijay Abraham I #define HCTL_SDVS_18 (0x5 << HCTL_SDVS_SHIFT) 617d326930SKishon Vijay Abraham I 627d326930SKishon Vijay Abraham I #define SDHCI_OMAP_SYSCTL 0x22c 637d326930SKishon Vijay Abraham I #define SYSCTL_CEN BIT(2) 647d326930SKishon Vijay Abraham I #define SYSCTL_CLKD_SHIFT 6 657d326930SKishon Vijay Abraham I #define SYSCTL_CLKD_MASK 0x3ff 667d326930SKishon Vijay Abraham I 677d326930SKishon Vijay Abraham I #define SDHCI_OMAP_STAT 0x230 687d326930SKishon Vijay Abraham I 697d326930SKishon Vijay Abraham I #define SDHCI_OMAP_IE 0x234 707d326930SKishon Vijay Abraham I #define INT_CC_EN BIT(0) 717d326930SKishon Vijay Abraham I 727d326930SKishon Vijay Abraham I #define SDHCI_OMAP_AC12 0x23c 737d326930SKishon Vijay Abraham I #define AC12_V1V8_SIGEN BIT(19) 749fc2cd76SKishon Vijay Abraham I #define AC12_SCLK_SEL BIT(23) 757d326930SKishon Vijay Abraham I 767d326930SKishon Vijay Abraham I #define SDHCI_OMAP_CAPA 0x240 777d326930SKishon Vijay Abraham I #define CAPA_VS33 BIT(24) 787d326930SKishon Vijay Abraham I #define CAPA_VS30 BIT(25) 797d326930SKishon Vijay Abraham I #define CAPA_VS18 BIT(26) 807d326930SKishon Vijay Abraham I 819fc2cd76SKishon Vijay Abraham I #define SDHCI_OMAP_CAPA2 0x0244 829fc2cd76SKishon Vijay Abraham I #define CAPA2_TSDR50 BIT(13) 839fc2cd76SKishon Vijay Abraham I 847d326930SKishon Vijay Abraham I #define SDHCI_OMAP_TIMEOUT 1 /* 1 msec */ 857d326930SKishon Vijay Abraham I 867d326930SKishon Vijay Abraham I #define SYSCTL_CLKD_MAX 0x3FF 877d326930SKishon Vijay Abraham I 887d326930SKishon Vijay Abraham I #define IOV_1V8 1800000 /* 180000 uV */ 897d326930SKishon Vijay Abraham I #define IOV_3V0 3000000 /* 300000 uV */ 907d326930SKishon Vijay Abraham I #define IOV_3V3 3300000 /* 330000 uV */ 917d326930SKishon Vijay Abraham I 929fc2cd76SKishon Vijay Abraham I #define MAX_PHASE_DELAY 0x7C 939fc2cd76SKishon Vijay Abraham I 948d20b2eaSKishon Vijay Abraham I /* sdhci-omap controller flags */ 958d20b2eaSKishon Vijay Abraham I #define SDHCI_OMAP_REQUIRE_IODELAY BIT(0) 968d20b2eaSKishon Vijay Abraham I 977d326930SKishon Vijay Abraham I struct sdhci_omap_data { 987d326930SKishon Vijay Abraham I u32 offset; 998d20b2eaSKishon Vijay Abraham I u8 flags; 1007d326930SKishon Vijay Abraham I }; 1017d326930SKishon Vijay Abraham I 1027d326930SKishon Vijay Abraham I struct sdhci_omap_host { 1037d326930SKishon Vijay Abraham I void __iomem *base; 1047d326930SKishon Vijay Abraham I struct device *dev; 1057d326930SKishon Vijay Abraham I struct regulator *pbias; 1067d326930SKishon Vijay Abraham I bool pbias_enabled; 1077d326930SKishon Vijay Abraham I struct sdhci_host *host; 1087d326930SKishon Vijay Abraham I u8 bus_mode; 1097d326930SKishon Vijay Abraham I u8 power_mode; 1108d20b2eaSKishon Vijay Abraham I u8 timing; 1118d20b2eaSKishon Vijay Abraham I u8 flags; 1128d20b2eaSKishon Vijay Abraham I 1138d20b2eaSKishon Vijay Abraham I struct pinctrl *pinctrl; 1148d20b2eaSKishon Vijay Abraham I struct pinctrl_state **pinctrl_state; 1157d326930SKishon Vijay Abraham I }; 1167d326930SKishon Vijay Abraham I 1178d20b2eaSKishon Vijay Abraham I static void sdhci_omap_start_clock(struct sdhci_omap_host *omap_host); 1188d20b2eaSKishon Vijay Abraham I static void sdhci_omap_stop_clock(struct sdhci_omap_host *omap_host); 1198d20b2eaSKishon Vijay Abraham I 1207d326930SKishon Vijay Abraham I static inline u32 sdhci_omap_readl(struct sdhci_omap_host *host, 1217d326930SKishon Vijay Abraham I unsigned int offset) 1227d326930SKishon Vijay Abraham I { 1237d326930SKishon Vijay Abraham I return readl(host->base + offset); 1247d326930SKishon Vijay Abraham I } 1257d326930SKishon Vijay Abraham I 1267d326930SKishon Vijay Abraham I static inline void sdhci_omap_writel(struct sdhci_omap_host *host, 1277d326930SKishon Vijay Abraham I unsigned int offset, u32 data) 1287d326930SKishon Vijay Abraham I { 1297d326930SKishon Vijay Abraham I writel(data, host->base + offset); 1307d326930SKishon Vijay Abraham I } 1317d326930SKishon Vijay Abraham I 1327d326930SKishon Vijay Abraham I static int sdhci_omap_set_pbias(struct sdhci_omap_host *omap_host, 1337d326930SKishon Vijay Abraham I bool power_on, unsigned int iov) 1347d326930SKishon Vijay Abraham I { 1357d326930SKishon Vijay Abraham I int ret; 1367d326930SKishon Vijay Abraham I struct device *dev = omap_host->dev; 1377d326930SKishon Vijay Abraham I 1387d326930SKishon Vijay Abraham I if (IS_ERR(omap_host->pbias)) 1397d326930SKishon Vijay Abraham I return 0; 1407d326930SKishon Vijay Abraham I 1417d326930SKishon Vijay Abraham I if (power_on) { 1427d326930SKishon Vijay Abraham I ret = regulator_set_voltage(omap_host->pbias, iov, iov); 1437d326930SKishon Vijay Abraham I if (ret) { 1447d326930SKishon Vijay Abraham I dev_err(dev, "pbias set voltage failed\n"); 1457d326930SKishon Vijay Abraham I return ret; 1467d326930SKishon Vijay Abraham I } 1477d326930SKishon Vijay Abraham I 1487d326930SKishon Vijay Abraham I if (omap_host->pbias_enabled) 1497d326930SKishon Vijay Abraham I return 0; 1507d326930SKishon Vijay Abraham I 1517d326930SKishon Vijay Abraham I ret = regulator_enable(omap_host->pbias); 1527d326930SKishon Vijay Abraham I if (ret) { 1537d326930SKishon Vijay Abraham I dev_err(dev, "pbias reg enable fail\n"); 1547d326930SKishon Vijay Abraham I return ret; 1557d326930SKishon Vijay Abraham I } 1567d326930SKishon Vijay Abraham I 1577d326930SKishon Vijay Abraham I omap_host->pbias_enabled = true; 1587d326930SKishon Vijay Abraham I } else { 1597d326930SKishon Vijay Abraham I if (!omap_host->pbias_enabled) 1607d326930SKishon Vijay Abraham I return 0; 1617d326930SKishon Vijay Abraham I 1627d326930SKishon Vijay Abraham I ret = regulator_disable(omap_host->pbias); 1637d326930SKishon Vijay Abraham I if (ret) { 1647d326930SKishon Vijay Abraham I dev_err(dev, "pbias reg disable fail\n"); 1657d326930SKishon Vijay Abraham I return ret; 1667d326930SKishon Vijay Abraham I } 1677d326930SKishon Vijay Abraham I omap_host->pbias_enabled = false; 1687d326930SKishon Vijay Abraham I } 1697d326930SKishon Vijay Abraham I 1707d326930SKishon Vijay Abraham I return 0; 1717d326930SKishon Vijay Abraham I } 1727d326930SKishon Vijay Abraham I 1737d326930SKishon Vijay Abraham I static int sdhci_omap_enable_iov(struct sdhci_omap_host *omap_host, 1747d326930SKishon Vijay Abraham I unsigned int iov) 1757d326930SKishon Vijay Abraham I { 1767d326930SKishon Vijay Abraham I int ret; 1777d326930SKishon Vijay Abraham I struct sdhci_host *host = omap_host->host; 1787d326930SKishon Vijay Abraham I struct mmc_host *mmc = host->mmc; 1797d326930SKishon Vijay Abraham I 1807d326930SKishon Vijay Abraham I ret = sdhci_omap_set_pbias(omap_host, false, 0); 1817d326930SKishon Vijay Abraham I if (ret) 1827d326930SKishon Vijay Abraham I return ret; 1837d326930SKishon Vijay Abraham I 1847d326930SKishon Vijay Abraham I if (!IS_ERR(mmc->supply.vqmmc)) { 1857d326930SKishon Vijay Abraham I ret = regulator_set_voltage(mmc->supply.vqmmc, iov, iov); 1867d326930SKishon Vijay Abraham I if (ret) { 1877d326930SKishon Vijay Abraham I dev_err(mmc_dev(mmc), "vqmmc set voltage failed\n"); 1887d326930SKishon Vijay Abraham I return ret; 1897d326930SKishon Vijay Abraham I } 1907d326930SKishon Vijay Abraham I } 1917d326930SKishon Vijay Abraham I 1927d326930SKishon Vijay Abraham I ret = sdhci_omap_set_pbias(omap_host, true, iov); 1937d326930SKishon Vijay Abraham I if (ret) 1947d326930SKishon Vijay Abraham I return ret; 1957d326930SKishon Vijay Abraham I 1967d326930SKishon Vijay Abraham I return 0; 1977d326930SKishon Vijay Abraham I } 1987d326930SKishon Vijay Abraham I 1997d326930SKishon Vijay Abraham I static void sdhci_omap_conf_bus_power(struct sdhci_omap_host *omap_host, 2007d326930SKishon Vijay Abraham I unsigned char signal_voltage) 2017d326930SKishon Vijay Abraham I { 2027d326930SKishon Vijay Abraham I u32 reg; 2037d326930SKishon Vijay Abraham I ktime_t timeout; 2047d326930SKishon Vijay Abraham I 2057d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_HCTL); 2067d326930SKishon Vijay Abraham I reg &= ~HCTL_SDVS_MASK; 2077d326930SKishon Vijay Abraham I 2087d326930SKishon Vijay Abraham I if (signal_voltage == MMC_SIGNAL_VOLTAGE_330) 2097d326930SKishon Vijay Abraham I reg |= HCTL_SDVS_33; 2107d326930SKishon Vijay Abraham I else 2117d326930SKishon Vijay Abraham I reg |= HCTL_SDVS_18; 2127d326930SKishon Vijay Abraham I 2137d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_HCTL, reg); 2147d326930SKishon Vijay Abraham I 2157d326930SKishon Vijay Abraham I reg |= HCTL_SDBP; 2167d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_HCTL, reg); 2177d326930SKishon Vijay Abraham I 2187d326930SKishon Vijay Abraham I /* wait 1ms */ 2197d326930SKishon Vijay Abraham I timeout = ktime_add_ms(ktime_get(), SDHCI_OMAP_TIMEOUT); 2207d326930SKishon Vijay Abraham I while (!(sdhci_omap_readl(omap_host, SDHCI_OMAP_HCTL) & HCTL_SDBP)) { 2217d326930SKishon Vijay Abraham I if (WARN_ON(ktime_after(ktime_get(), timeout))) 2227d326930SKishon Vijay Abraham I return; 2237d326930SKishon Vijay Abraham I usleep_range(5, 10); 2247d326930SKishon Vijay Abraham I } 2257d326930SKishon Vijay Abraham I } 2267d326930SKishon Vijay Abraham I 2279fc2cd76SKishon Vijay Abraham I static inline void sdhci_omap_set_dll(struct sdhci_omap_host *omap_host, 2289fc2cd76SKishon Vijay Abraham I int count) 2299fc2cd76SKishon Vijay Abraham I { 2309fc2cd76SKishon Vijay Abraham I int i; 2319fc2cd76SKishon Vijay Abraham I u32 reg; 2329fc2cd76SKishon Vijay Abraham I 2339fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_DLL); 2349fc2cd76SKishon Vijay Abraham I reg |= DLL_FORCE_VALUE; 2359fc2cd76SKishon Vijay Abraham I reg &= ~DLL_FORCE_SR_C_MASK; 2369fc2cd76SKishon Vijay Abraham I reg |= (count << DLL_FORCE_SR_C_SHIFT); 2379fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_DLL, reg); 2389fc2cd76SKishon Vijay Abraham I 2399fc2cd76SKishon Vijay Abraham I reg |= DLL_CALIB; 2409fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_DLL, reg); 2419fc2cd76SKishon Vijay Abraham I for (i = 0; i < 1000; i++) { 2429fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_DLL); 2439fc2cd76SKishon Vijay Abraham I if (reg & DLL_CALIB) 2449fc2cd76SKishon Vijay Abraham I break; 2459fc2cd76SKishon Vijay Abraham I } 2469fc2cd76SKishon Vijay Abraham I reg &= ~DLL_CALIB; 2479fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_DLL, reg); 2489fc2cd76SKishon Vijay Abraham I } 2499fc2cd76SKishon Vijay Abraham I 2509fc2cd76SKishon Vijay Abraham I static void sdhci_omap_disable_tuning(struct sdhci_omap_host *omap_host) 2519fc2cd76SKishon Vijay Abraham I { 2529fc2cd76SKishon Vijay Abraham I u32 reg; 2539fc2cd76SKishon Vijay Abraham I 2549fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_AC12); 2559fc2cd76SKishon Vijay Abraham I reg &= ~AC12_SCLK_SEL; 2569fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_AC12, reg); 2579fc2cd76SKishon Vijay Abraham I 2589fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_DLL); 2599fc2cd76SKishon Vijay Abraham I reg &= ~(DLL_FORCE_VALUE | DLL_SWT); 2609fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_DLL, reg); 2619fc2cd76SKishon Vijay Abraham I } 2629fc2cd76SKishon Vijay Abraham I 2639fc2cd76SKishon Vijay Abraham I static int sdhci_omap_execute_tuning(struct mmc_host *mmc, u32 opcode) 2649fc2cd76SKishon Vijay Abraham I { 2659fc2cd76SKishon Vijay Abraham I struct sdhci_host *host = mmc_priv(mmc); 2669fc2cd76SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 2679fc2cd76SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 2689fc2cd76SKishon Vijay Abraham I struct device *dev = omap_host->dev; 2699fc2cd76SKishon Vijay Abraham I struct mmc_ios *ios = &mmc->ios; 2709fc2cd76SKishon Vijay Abraham I u32 start_window = 0, max_window = 0; 2719fc2cd76SKishon Vijay Abraham I u8 cur_match, prev_match = 0; 2729fc2cd76SKishon Vijay Abraham I u32 length = 0, max_len = 0; 2737d33c358SKishon Vijay Abraham I u32 ier = host->ier; 2749fc2cd76SKishon Vijay Abraham I u32 phase_delay = 0; 2759fc2cd76SKishon Vijay Abraham I int ret = 0; 2769fc2cd76SKishon Vijay Abraham I u32 reg; 2779fc2cd76SKishon Vijay Abraham I 2789fc2cd76SKishon Vijay Abraham I pltfm_host = sdhci_priv(host); 2799fc2cd76SKishon Vijay Abraham I omap_host = sdhci_pltfm_priv(pltfm_host); 2809fc2cd76SKishon Vijay Abraham I dev = omap_host->dev; 2819fc2cd76SKishon Vijay Abraham I 2829fc2cd76SKishon Vijay Abraham I /* clock tuning is not needed for upto 52MHz */ 2839fc2cd76SKishon Vijay Abraham I if (ios->clock <= 52000000) 2849fc2cd76SKishon Vijay Abraham I return 0; 2859fc2cd76SKishon Vijay Abraham I 2869fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CAPA2); 2879fc2cd76SKishon Vijay Abraham I if (ios->timing == MMC_TIMING_UHS_SDR50 && !(reg & CAPA2_TSDR50)) 2889fc2cd76SKishon Vijay Abraham I return 0; 2899fc2cd76SKishon Vijay Abraham I 2909fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_DLL); 2919fc2cd76SKishon Vijay Abraham I reg |= DLL_SWT; 2929fc2cd76SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_DLL, reg); 2939fc2cd76SKishon Vijay Abraham I 2947d33c358SKishon Vijay Abraham I /* 2957d33c358SKishon Vijay Abraham I * OMAP5/DRA74X/DRA72x Errata i802: 2967d33c358SKishon Vijay Abraham I * DCRC error interrupts (MMCHS_STAT[21] DCRC=0x1) can occur 2977d33c358SKishon Vijay Abraham I * during the tuning procedure. So disable it during the 2987d33c358SKishon Vijay Abraham I * tuning procedure. 2997d33c358SKishon Vijay Abraham I */ 3007d33c358SKishon Vijay Abraham I ier &= ~SDHCI_INT_DATA_CRC; 3017d33c358SKishon Vijay Abraham I sdhci_writel(host, ier, SDHCI_INT_ENABLE); 3027d33c358SKishon Vijay Abraham I sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 3037d33c358SKishon Vijay Abraham I 3049fc2cd76SKishon Vijay Abraham I while (phase_delay <= MAX_PHASE_DELAY) { 3059fc2cd76SKishon Vijay Abraham I sdhci_omap_set_dll(omap_host, phase_delay); 3069fc2cd76SKishon Vijay Abraham I 3079fc2cd76SKishon Vijay Abraham I cur_match = !mmc_send_tuning(mmc, opcode, NULL); 3089fc2cd76SKishon Vijay Abraham I if (cur_match) { 3099fc2cd76SKishon Vijay Abraham I if (prev_match) { 3109fc2cd76SKishon Vijay Abraham I length++; 3119fc2cd76SKishon Vijay Abraham I } else { 3129fc2cd76SKishon Vijay Abraham I start_window = phase_delay; 3139fc2cd76SKishon Vijay Abraham I length = 1; 3149fc2cd76SKishon Vijay Abraham I } 3159fc2cd76SKishon Vijay Abraham I } 3169fc2cd76SKishon Vijay Abraham I 3179fc2cd76SKishon Vijay Abraham I if (length > max_len) { 3189fc2cd76SKishon Vijay Abraham I max_window = start_window; 3199fc2cd76SKishon Vijay Abraham I max_len = length; 3209fc2cd76SKishon Vijay Abraham I } 3219fc2cd76SKishon Vijay Abraham I 3229fc2cd76SKishon Vijay Abraham I prev_match = cur_match; 3239fc2cd76SKishon Vijay Abraham I phase_delay += 4; 3249fc2cd76SKishon Vijay Abraham I } 3259fc2cd76SKishon Vijay Abraham I 3269fc2cd76SKishon Vijay Abraham I if (!max_len) { 3279fc2cd76SKishon Vijay Abraham I dev_err(dev, "Unable to find match\n"); 3289fc2cd76SKishon Vijay Abraham I ret = -EIO; 3299fc2cd76SKishon Vijay Abraham I goto tuning_error; 3309fc2cd76SKishon Vijay Abraham I } 3319fc2cd76SKishon Vijay Abraham I 3329fc2cd76SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_AC12); 3339fc2cd76SKishon Vijay Abraham I if (!(reg & AC12_SCLK_SEL)) { 3349fc2cd76SKishon Vijay Abraham I ret = -EIO; 3359fc2cd76SKishon Vijay Abraham I goto tuning_error; 3369fc2cd76SKishon Vijay Abraham I } 3379fc2cd76SKishon Vijay Abraham I 3389fc2cd76SKishon Vijay Abraham I phase_delay = max_window + 4 * (max_len >> 1); 3399fc2cd76SKishon Vijay Abraham I sdhci_omap_set_dll(omap_host, phase_delay); 3409fc2cd76SKishon Vijay Abraham I 3419fc2cd76SKishon Vijay Abraham I goto ret; 3429fc2cd76SKishon Vijay Abraham I 3439fc2cd76SKishon Vijay Abraham I tuning_error: 3449fc2cd76SKishon Vijay Abraham I dev_err(dev, "Tuning failed\n"); 3459fc2cd76SKishon Vijay Abraham I sdhci_omap_disable_tuning(omap_host); 3469fc2cd76SKishon Vijay Abraham I 3479fc2cd76SKishon Vijay Abraham I ret: 3489fc2cd76SKishon Vijay Abraham I sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 3497d33c358SKishon Vijay Abraham I sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 3507d33c358SKishon Vijay Abraham I sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 3519fc2cd76SKishon Vijay Abraham I return ret; 3529fc2cd76SKishon Vijay Abraham I } 3539fc2cd76SKishon Vijay Abraham I 35420ea26a1SKishon Vijay Abraham I static int sdhci_omap_card_busy(struct mmc_host *mmc) 35520ea26a1SKishon Vijay Abraham I { 35620ea26a1SKishon Vijay Abraham I u32 reg, ac12; 35720ea26a1SKishon Vijay Abraham I int ret = false; 35820ea26a1SKishon Vijay Abraham I struct sdhci_host *host = mmc_priv(mmc); 35920ea26a1SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host; 36020ea26a1SKishon Vijay Abraham I struct sdhci_omap_host *omap_host; 36120ea26a1SKishon Vijay Abraham I u32 ier = host->ier; 36220ea26a1SKishon Vijay Abraham I 36320ea26a1SKishon Vijay Abraham I pltfm_host = sdhci_priv(host); 36420ea26a1SKishon Vijay Abraham I omap_host = sdhci_pltfm_priv(pltfm_host); 36520ea26a1SKishon Vijay Abraham I 36620ea26a1SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 36720ea26a1SKishon Vijay Abraham I ac12 = sdhci_omap_readl(omap_host, SDHCI_OMAP_AC12); 36820ea26a1SKishon Vijay Abraham I reg &= ~CON_CLKEXTFREE; 36920ea26a1SKishon Vijay Abraham I if (ac12 & AC12_V1V8_SIGEN) 37020ea26a1SKishon Vijay Abraham I reg |= CON_CLKEXTFREE; 37120ea26a1SKishon Vijay Abraham I reg |= CON_PADEN; 37220ea26a1SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 37320ea26a1SKishon Vijay Abraham I 37420ea26a1SKishon Vijay Abraham I disable_irq(host->irq); 37520ea26a1SKishon Vijay Abraham I ier |= SDHCI_INT_CARD_INT; 37620ea26a1SKishon Vijay Abraham I sdhci_writel(host, ier, SDHCI_INT_ENABLE); 37720ea26a1SKishon Vijay Abraham I sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); 37820ea26a1SKishon Vijay Abraham I 37920ea26a1SKishon Vijay Abraham I /* 38020ea26a1SKishon Vijay Abraham I * Delay is required for PSTATE to correctly reflect 38120ea26a1SKishon Vijay Abraham I * DLEV/CLEV values after PADEN is set. 38220ea26a1SKishon Vijay Abraham I */ 38320ea26a1SKishon Vijay Abraham I usleep_range(50, 100); 38420ea26a1SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_PSTATE); 38520ea26a1SKishon Vijay Abraham I if ((reg & PSTATE_DATI) || !(reg & PSTATE_DLEV_DAT0)) 38620ea26a1SKishon Vijay Abraham I ret = true; 38720ea26a1SKishon Vijay Abraham I 38820ea26a1SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 38920ea26a1SKishon Vijay Abraham I reg &= ~(CON_CLKEXTFREE | CON_PADEN); 39020ea26a1SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 39120ea26a1SKishon Vijay Abraham I 39220ea26a1SKishon Vijay Abraham I sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); 39320ea26a1SKishon Vijay Abraham I sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); 39420ea26a1SKishon Vijay Abraham I enable_irq(host->irq); 39520ea26a1SKishon Vijay Abraham I 39620ea26a1SKishon Vijay Abraham I return ret; 39720ea26a1SKishon Vijay Abraham I } 39820ea26a1SKishon Vijay Abraham I 3997d326930SKishon Vijay Abraham I static int sdhci_omap_start_signal_voltage_switch(struct mmc_host *mmc, 4007d326930SKishon Vijay Abraham I struct mmc_ios *ios) 4017d326930SKishon Vijay Abraham I { 4027d326930SKishon Vijay Abraham I u32 reg; 4037d326930SKishon Vijay Abraham I int ret; 4047d326930SKishon Vijay Abraham I unsigned int iov; 4057d326930SKishon Vijay Abraham I struct sdhci_host *host = mmc_priv(mmc); 4067d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host; 4077d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host; 4087d326930SKishon Vijay Abraham I struct device *dev; 4097d326930SKishon Vijay Abraham I 4107d326930SKishon Vijay Abraham I pltfm_host = sdhci_priv(host); 4117d326930SKishon Vijay Abraham I omap_host = sdhci_pltfm_priv(pltfm_host); 4127d326930SKishon Vijay Abraham I dev = omap_host->dev; 4137d326930SKishon Vijay Abraham I 4147d326930SKishon Vijay Abraham I if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 4157d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CAPA); 4167d326930SKishon Vijay Abraham I if (!(reg & CAPA_VS33)) 4177d326930SKishon Vijay Abraham I return -EOPNOTSUPP; 4187d326930SKishon Vijay Abraham I 4197d326930SKishon Vijay Abraham I sdhci_omap_conf_bus_power(omap_host, ios->signal_voltage); 4207d326930SKishon Vijay Abraham I 4217d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_AC12); 4227d326930SKishon Vijay Abraham I reg &= ~AC12_V1V8_SIGEN; 4237d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_AC12, reg); 4247d326930SKishon Vijay Abraham I 4257d326930SKishon Vijay Abraham I iov = IOV_3V3; 4267d326930SKishon Vijay Abraham I } else if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_180) { 4277d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CAPA); 4287d326930SKishon Vijay Abraham I if (!(reg & CAPA_VS18)) 4297d326930SKishon Vijay Abraham I return -EOPNOTSUPP; 4307d326930SKishon Vijay Abraham I 4317d326930SKishon Vijay Abraham I sdhci_omap_conf_bus_power(omap_host, ios->signal_voltage); 4327d326930SKishon Vijay Abraham I 4337d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_AC12); 4347d326930SKishon Vijay Abraham I reg |= AC12_V1V8_SIGEN; 4357d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_AC12, reg); 4367d326930SKishon Vijay Abraham I 4377d326930SKishon Vijay Abraham I iov = IOV_1V8; 4387d326930SKishon Vijay Abraham I } else { 4397d326930SKishon Vijay Abraham I return -EOPNOTSUPP; 4407d326930SKishon Vijay Abraham I } 4417d326930SKishon Vijay Abraham I 4427d326930SKishon Vijay Abraham I ret = sdhci_omap_enable_iov(omap_host, iov); 4437d326930SKishon Vijay Abraham I if (ret) { 4447d326930SKishon Vijay Abraham I dev_err(dev, "failed to switch IO voltage to %dmV\n", iov); 4457d326930SKishon Vijay Abraham I return ret; 4467d326930SKishon Vijay Abraham I } 4477d326930SKishon Vijay Abraham I 4487d326930SKishon Vijay Abraham I dev_dbg(dev, "IO voltage switched to %dmV\n", iov); 4497d326930SKishon Vijay Abraham I return 0; 4507d326930SKishon Vijay Abraham I } 4517d326930SKishon Vijay Abraham I 4528d20b2eaSKishon Vijay Abraham I static void sdhci_omap_set_timing(struct sdhci_omap_host *omap_host, u8 timing) 4538d20b2eaSKishon Vijay Abraham I { 4548d20b2eaSKishon Vijay Abraham I int ret; 4558d20b2eaSKishon Vijay Abraham I struct pinctrl_state *pinctrl_state; 4568d20b2eaSKishon Vijay Abraham I struct device *dev = omap_host->dev; 4578d20b2eaSKishon Vijay Abraham I 4588d20b2eaSKishon Vijay Abraham I if (!(omap_host->flags & SDHCI_OMAP_REQUIRE_IODELAY)) 4598d20b2eaSKishon Vijay Abraham I return; 4608d20b2eaSKishon Vijay Abraham I 4618d20b2eaSKishon Vijay Abraham I if (omap_host->timing == timing) 4628d20b2eaSKishon Vijay Abraham I return; 4638d20b2eaSKishon Vijay Abraham I 4648d20b2eaSKishon Vijay Abraham I sdhci_omap_stop_clock(omap_host); 4658d20b2eaSKishon Vijay Abraham I 4668d20b2eaSKishon Vijay Abraham I pinctrl_state = omap_host->pinctrl_state[timing]; 4678d20b2eaSKishon Vijay Abraham I ret = pinctrl_select_state(omap_host->pinctrl, pinctrl_state); 4688d20b2eaSKishon Vijay Abraham I if (ret) { 4698d20b2eaSKishon Vijay Abraham I dev_err(dev, "failed to select pinctrl state\n"); 4708d20b2eaSKishon Vijay Abraham I return; 4718d20b2eaSKishon Vijay Abraham I } 4728d20b2eaSKishon Vijay Abraham I 4738d20b2eaSKishon Vijay Abraham I sdhci_omap_start_clock(omap_host); 4748d20b2eaSKishon Vijay Abraham I omap_host->timing = timing; 4758d20b2eaSKishon Vijay Abraham I } 4768d20b2eaSKishon Vijay Abraham I 477300df508SKishon Vijay Abraham I static void sdhci_omap_set_power_mode(struct sdhci_omap_host *omap_host, 478300df508SKishon Vijay Abraham I u8 power_mode) 479300df508SKishon Vijay Abraham I { 4809fc2cd76SKishon Vijay Abraham I if (omap_host->bus_mode == MMC_POWER_OFF) 4819fc2cd76SKishon Vijay Abraham I sdhci_omap_disable_tuning(omap_host); 482300df508SKishon Vijay Abraham I omap_host->power_mode = power_mode; 483300df508SKishon Vijay Abraham I } 484300df508SKishon Vijay Abraham I 4857d326930SKishon Vijay Abraham I static void sdhci_omap_set_bus_mode(struct sdhci_omap_host *omap_host, 4867d326930SKishon Vijay Abraham I unsigned int mode) 4877d326930SKishon Vijay Abraham I { 4887d326930SKishon Vijay Abraham I u32 reg; 4897d326930SKishon Vijay Abraham I 4907d326930SKishon Vijay Abraham I if (omap_host->bus_mode == mode) 4917d326930SKishon Vijay Abraham I return; 4927d326930SKishon Vijay Abraham I 4937d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 4947d326930SKishon Vijay Abraham I if (mode == MMC_BUSMODE_OPENDRAIN) 4957d326930SKishon Vijay Abraham I reg |= CON_OD; 4967d326930SKishon Vijay Abraham I else 4977d326930SKishon Vijay Abraham I reg &= ~CON_OD; 4987d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 4997d326930SKishon Vijay Abraham I 5007d326930SKishon Vijay Abraham I omap_host->bus_mode = mode; 5017d326930SKishon Vijay Abraham I } 5027d326930SKishon Vijay Abraham I 503ddde0e7dSColin Ian King static void sdhci_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 5047d326930SKishon Vijay Abraham I { 5057d326930SKishon Vijay Abraham I struct sdhci_host *host = mmc_priv(mmc); 5067d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host; 5077d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host; 5087d326930SKishon Vijay Abraham I 5097d326930SKishon Vijay Abraham I pltfm_host = sdhci_priv(host); 5107d326930SKishon Vijay Abraham I omap_host = sdhci_pltfm_priv(pltfm_host); 5117d326930SKishon Vijay Abraham I 5127d326930SKishon Vijay Abraham I sdhci_omap_set_bus_mode(omap_host, ios->bus_mode); 5138d20b2eaSKishon Vijay Abraham I sdhci_omap_set_timing(omap_host, ios->timing); 5147d326930SKishon Vijay Abraham I sdhci_set_ios(mmc, ios); 515300df508SKishon Vijay Abraham I sdhci_omap_set_power_mode(omap_host, ios->power_mode); 5167d326930SKishon Vijay Abraham I } 5177d326930SKishon Vijay Abraham I 5187d326930SKishon Vijay Abraham I static u16 sdhci_omap_calc_divisor(struct sdhci_pltfm_host *host, 5197d326930SKishon Vijay Abraham I unsigned int clock) 5207d326930SKishon Vijay Abraham I { 5217d326930SKishon Vijay Abraham I u16 dsor; 5227d326930SKishon Vijay Abraham I 5237d326930SKishon Vijay Abraham I dsor = DIV_ROUND_UP(clk_get_rate(host->clk), clock); 5247d326930SKishon Vijay Abraham I if (dsor > SYSCTL_CLKD_MAX) 5257d326930SKishon Vijay Abraham I dsor = SYSCTL_CLKD_MAX; 5267d326930SKishon Vijay Abraham I 5277d326930SKishon Vijay Abraham I return dsor; 5287d326930SKishon Vijay Abraham I } 5297d326930SKishon Vijay Abraham I 5307d326930SKishon Vijay Abraham I static void sdhci_omap_start_clock(struct sdhci_omap_host *omap_host) 5317d326930SKishon Vijay Abraham I { 5327d326930SKishon Vijay Abraham I u32 reg; 5337d326930SKishon Vijay Abraham I 5347d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_SYSCTL); 5357d326930SKishon Vijay Abraham I reg |= SYSCTL_CEN; 5367d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_SYSCTL, reg); 5377d326930SKishon Vijay Abraham I } 5387d326930SKishon Vijay Abraham I 5397d326930SKishon Vijay Abraham I static void sdhci_omap_stop_clock(struct sdhci_omap_host *omap_host) 5407d326930SKishon Vijay Abraham I { 5417d326930SKishon Vijay Abraham I u32 reg; 5427d326930SKishon Vijay Abraham I 5437d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_SYSCTL); 5447d326930SKishon Vijay Abraham I reg &= ~SYSCTL_CEN; 5457d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_SYSCTL, reg); 5467d326930SKishon Vijay Abraham I } 5477d326930SKishon Vijay Abraham I 5487d326930SKishon Vijay Abraham I static void sdhci_omap_set_clock(struct sdhci_host *host, unsigned int clock) 5497d326930SKishon Vijay Abraham I { 5507d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 5517d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 5527d326930SKishon Vijay Abraham I unsigned long clkdiv; 5537d326930SKishon Vijay Abraham I 5547d326930SKishon Vijay Abraham I sdhci_omap_stop_clock(omap_host); 5557d326930SKishon Vijay Abraham I 5567d326930SKishon Vijay Abraham I if (!clock) 5577d326930SKishon Vijay Abraham I return; 5587d326930SKishon Vijay Abraham I 5597d326930SKishon Vijay Abraham I clkdiv = sdhci_omap_calc_divisor(pltfm_host, clock); 5607d326930SKishon Vijay Abraham I clkdiv = (clkdiv & SYSCTL_CLKD_MASK) << SYSCTL_CLKD_SHIFT; 5617d326930SKishon Vijay Abraham I sdhci_enable_clk(host, clkdiv); 5627d326930SKishon Vijay Abraham I 5637d326930SKishon Vijay Abraham I sdhci_omap_start_clock(omap_host); 5647d326930SKishon Vijay Abraham I } 5657d326930SKishon Vijay Abraham I 566ddde0e7dSColin Ian King static void sdhci_omap_set_power(struct sdhci_host *host, unsigned char mode, 5677d326930SKishon Vijay Abraham I unsigned short vdd) 5687d326930SKishon Vijay Abraham I { 5697d326930SKishon Vijay Abraham I struct mmc_host *mmc = host->mmc; 5707d326930SKishon Vijay Abraham I 5717d326930SKishon Vijay Abraham I mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); 5727d326930SKishon Vijay Abraham I } 5737d326930SKishon Vijay Abraham I 5747d326930SKishon Vijay Abraham I static int sdhci_omap_enable_dma(struct sdhci_host *host) 5757d326930SKishon Vijay Abraham I { 5767d326930SKishon Vijay Abraham I u32 reg; 5777d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 5787d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 5797d326930SKishon Vijay Abraham I 5807d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 5817d326930SKishon Vijay Abraham I reg |= CON_DMA_MASTER; 5827d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 5837d326930SKishon Vijay Abraham I 5847d326930SKishon Vijay Abraham I return 0; 5857d326930SKishon Vijay Abraham I } 5867d326930SKishon Vijay Abraham I 587ddde0e7dSColin Ian King static unsigned int sdhci_omap_get_min_clock(struct sdhci_host *host) 5887d326930SKishon Vijay Abraham I { 5897d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 5907d326930SKishon Vijay Abraham I 5917d326930SKishon Vijay Abraham I return clk_get_rate(pltfm_host->clk) / SYSCTL_CLKD_MAX; 5927d326930SKishon Vijay Abraham I } 5937d326930SKishon Vijay Abraham I 5947d326930SKishon Vijay Abraham I static void sdhci_omap_set_bus_width(struct sdhci_host *host, int width) 5957d326930SKishon Vijay Abraham I { 5967d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 5977d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 5987d326930SKishon Vijay Abraham I u32 reg; 5997d326930SKishon Vijay Abraham I 6007d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 6017d326930SKishon Vijay Abraham I if (width == MMC_BUS_WIDTH_8) 6027d326930SKishon Vijay Abraham I reg |= CON_DW8; 6037d326930SKishon Vijay Abraham I else 6047d326930SKishon Vijay Abraham I reg &= ~CON_DW8; 6057d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 6067d326930SKishon Vijay Abraham I 6077d326930SKishon Vijay Abraham I sdhci_set_bus_width(host, width); 6087d326930SKishon Vijay Abraham I } 6097d326930SKishon Vijay Abraham I 6107d326930SKishon Vijay Abraham I static void sdhci_omap_init_74_clocks(struct sdhci_host *host, u8 power_mode) 6117d326930SKishon Vijay Abraham I { 6127d326930SKishon Vijay Abraham I u32 reg; 6137d326930SKishon Vijay Abraham I ktime_t timeout; 6147d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 6157d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 6167d326930SKishon Vijay Abraham I 6177d326930SKishon Vijay Abraham I if (omap_host->power_mode == power_mode) 6187d326930SKishon Vijay Abraham I return; 6197d326930SKishon Vijay Abraham I 6207d326930SKishon Vijay Abraham I if (power_mode != MMC_POWER_ON) 6217d326930SKishon Vijay Abraham I return; 6227d326930SKishon Vijay Abraham I 6237d326930SKishon Vijay Abraham I disable_irq(host->irq); 6247d326930SKishon Vijay Abraham I 6257d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 6267d326930SKishon Vijay Abraham I reg |= CON_INIT; 6277d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 6287d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CMD, 0x0); 6297d326930SKishon Vijay Abraham I 6307d326930SKishon Vijay Abraham I /* wait 1ms */ 6317d326930SKishon Vijay Abraham I timeout = ktime_add_ms(ktime_get(), SDHCI_OMAP_TIMEOUT); 6327d326930SKishon Vijay Abraham I while (!(sdhci_omap_readl(omap_host, SDHCI_OMAP_STAT) & INT_CC_EN)) { 6337d326930SKishon Vijay Abraham I if (WARN_ON(ktime_after(ktime_get(), timeout))) 6347d326930SKishon Vijay Abraham I return; 6357d326930SKishon Vijay Abraham I usleep_range(5, 10); 6367d326930SKishon Vijay Abraham I } 6377d326930SKishon Vijay Abraham I 6387d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 6397d326930SKishon Vijay Abraham I reg &= ~CON_INIT; 6407d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 6417d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_STAT, INT_CC_EN); 6427d326930SKishon Vijay Abraham I 6437d326930SKishon Vijay Abraham I enable_irq(host->irq); 6447d326930SKishon Vijay Abraham I } 6457d326930SKishon Vijay Abraham I 64627ceb7e0SKishon Vijay Abraham I static void sdhci_omap_set_uhs_signaling(struct sdhci_host *host, 64727ceb7e0SKishon Vijay Abraham I unsigned int timing) 64827ceb7e0SKishon Vijay Abraham I { 64927ceb7e0SKishon Vijay Abraham I u32 reg; 65027ceb7e0SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 65127ceb7e0SKishon Vijay Abraham I struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); 65227ceb7e0SKishon Vijay Abraham I 65327ceb7e0SKishon Vijay Abraham I sdhci_omap_stop_clock(omap_host); 65427ceb7e0SKishon Vijay Abraham I 65527ceb7e0SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CON); 65627ceb7e0SKishon Vijay Abraham I if (timing == MMC_TIMING_UHS_DDR50 || timing == MMC_TIMING_MMC_DDR52) 65727ceb7e0SKishon Vijay Abraham I reg |= CON_DDR; 65827ceb7e0SKishon Vijay Abraham I else 65927ceb7e0SKishon Vijay Abraham I reg &= ~CON_DDR; 66027ceb7e0SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CON, reg); 66127ceb7e0SKishon Vijay Abraham I 66227ceb7e0SKishon Vijay Abraham I sdhci_set_uhs_signaling(host, timing); 66327ceb7e0SKishon Vijay Abraham I sdhci_omap_start_clock(omap_host); 66427ceb7e0SKishon Vijay Abraham I } 66527ceb7e0SKishon Vijay Abraham I 6667d326930SKishon Vijay Abraham I static struct sdhci_ops sdhci_omap_ops = { 6677d326930SKishon Vijay Abraham I .set_clock = sdhci_omap_set_clock, 6687d326930SKishon Vijay Abraham I .set_power = sdhci_omap_set_power, 6697d326930SKishon Vijay Abraham I .enable_dma = sdhci_omap_enable_dma, 6707d326930SKishon Vijay Abraham I .get_max_clock = sdhci_pltfm_clk_get_max_clock, 6717d326930SKishon Vijay Abraham I .get_min_clock = sdhci_omap_get_min_clock, 6727d326930SKishon Vijay Abraham I .set_bus_width = sdhci_omap_set_bus_width, 6737d326930SKishon Vijay Abraham I .platform_send_init_74_clocks = sdhci_omap_init_74_clocks, 6747d326930SKishon Vijay Abraham I .reset = sdhci_reset, 67527ceb7e0SKishon Vijay Abraham I .set_uhs_signaling = sdhci_omap_set_uhs_signaling, 6767d326930SKishon Vijay Abraham I }; 6777d326930SKishon Vijay Abraham I 6787d326930SKishon Vijay Abraham I static int sdhci_omap_set_capabilities(struct sdhci_omap_host *omap_host) 6797d326930SKishon Vijay Abraham I { 6807d326930SKishon Vijay Abraham I u32 reg; 6817d326930SKishon Vijay Abraham I int ret = 0; 6827d326930SKishon Vijay Abraham I struct device *dev = omap_host->dev; 6837d326930SKishon Vijay Abraham I struct regulator *vqmmc; 6847d326930SKishon Vijay Abraham I 6857d326930SKishon Vijay Abraham I vqmmc = regulator_get(dev, "vqmmc"); 6867d326930SKishon Vijay Abraham I if (IS_ERR(vqmmc)) { 6877d326930SKishon Vijay Abraham I ret = PTR_ERR(vqmmc); 6887d326930SKishon Vijay Abraham I goto reg_put; 6897d326930SKishon Vijay Abraham I } 6907d326930SKishon Vijay Abraham I 6917d326930SKishon Vijay Abraham I /* voltage capabilities might be set by boot loader, clear it */ 6927d326930SKishon Vijay Abraham I reg = sdhci_omap_readl(omap_host, SDHCI_OMAP_CAPA); 6937d326930SKishon Vijay Abraham I reg &= ~(CAPA_VS18 | CAPA_VS30 | CAPA_VS33); 6947d326930SKishon Vijay Abraham I 6957d326930SKishon Vijay Abraham I if (regulator_is_supported_voltage(vqmmc, IOV_3V3, IOV_3V3)) 6967d326930SKishon Vijay Abraham I reg |= CAPA_VS33; 6977d326930SKishon Vijay Abraham I if (regulator_is_supported_voltage(vqmmc, IOV_1V8, IOV_1V8)) 6987d326930SKishon Vijay Abraham I reg |= CAPA_VS18; 6997d326930SKishon Vijay Abraham I 7007d326930SKishon Vijay Abraham I sdhci_omap_writel(omap_host, SDHCI_OMAP_CAPA, reg); 7017d326930SKishon Vijay Abraham I 7027d326930SKishon Vijay Abraham I reg_put: 7037d326930SKishon Vijay Abraham I regulator_put(vqmmc); 7047d326930SKishon Vijay Abraham I 7057d326930SKishon Vijay Abraham I return ret; 7067d326930SKishon Vijay Abraham I } 7077d326930SKishon Vijay Abraham I 7087d326930SKishon Vijay Abraham I static const struct sdhci_pltfm_data sdhci_omap_pdata = { 7097d326930SKishon Vijay Abraham I .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION | 7107d326930SKishon Vijay Abraham I SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | 7117d326930SKishon Vijay Abraham I SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN | 7127d326930SKishon Vijay Abraham I SDHCI_QUIRK_NO_HISPD_BIT | 7137d326930SKishon Vijay Abraham I SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, 7147d326930SKishon Vijay Abraham I .quirks2 = SDHCI_QUIRK2_NO_1_8_V | 7157d326930SKishon Vijay Abraham I SDHCI_QUIRK2_ACMD23_BROKEN | 7167d326930SKishon Vijay Abraham I SDHCI_QUIRK2_RSP_136_HAS_CRC, 7177d326930SKishon Vijay Abraham I .ops = &sdhci_omap_ops, 7187d326930SKishon Vijay Abraham I }; 7197d326930SKishon Vijay Abraham I 7207d326930SKishon Vijay Abraham I static const struct sdhci_omap_data dra7_data = { 7217d326930SKishon Vijay Abraham I .offset = 0x200, 7228d20b2eaSKishon Vijay Abraham I .flags = SDHCI_OMAP_REQUIRE_IODELAY, 7237d326930SKishon Vijay Abraham I }; 7247d326930SKishon Vijay Abraham I 7257d326930SKishon Vijay Abraham I static const struct of_device_id omap_sdhci_match[] = { 7267d326930SKishon Vijay Abraham I { .compatible = "ti,dra7-sdhci", .data = &dra7_data }, 7277d326930SKishon Vijay Abraham I {}, 7287d326930SKishon Vijay Abraham I }; 7297d326930SKishon Vijay Abraham I MODULE_DEVICE_TABLE(of, omap_sdhci_match); 7307d326930SKishon Vijay Abraham I 7318d20b2eaSKishon Vijay Abraham I static struct pinctrl_state 7328d20b2eaSKishon Vijay Abraham I *sdhci_omap_iodelay_pinctrl_state(struct sdhci_omap_host *omap_host, char *mode, 7338d20b2eaSKishon Vijay Abraham I u32 *caps, u32 capmask) 7348d20b2eaSKishon Vijay Abraham I { 7358d20b2eaSKishon Vijay Abraham I struct device *dev = omap_host->dev; 7368d20b2eaSKishon Vijay Abraham I struct pinctrl_state *pinctrl_state = ERR_PTR(-ENODEV); 7378d20b2eaSKishon Vijay Abraham I 7388d20b2eaSKishon Vijay Abraham I if (!(*caps & capmask)) 7398d20b2eaSKishon Vijay Abraham I goto ret; 7408d20b2eaSKishon Vijay Abraham I 7418d20b2eaSKishon Vijay Abraham I pinctrl_state = pinctrl_lookup_state(omap_host->pinctrl, mode); 7428d20b2eaSKishon Vijay Abraham I if (IS_ERR(pinctrl_state)) { 7438d20b2eaSKishon Vijay Abraham I dev_err(dev, "no pinctrl state for %s mode", mode); 7448d20b2eaSKishon Vijay Abraham I *caps &= ~capmask; 7458d20b2eaSKishon Vijay Abraham I } 7468d20b2eaSKishon Vijay Abraham I 7478d20b2eaSKishon Vijay Abraham I ret: 7488d20b2eaSKishon Vijay Abraham I return pinctrl_state; 7498d20b2eaSKishon Vijay Abraham I } 7508d20b2eaSKishon Vijay Abraham I 7518d20b2eaSKishon Vijay Abraham I static int sdhci_omap_config_iodelay_pinctrl_state(struct sdhci_omap_host 7528d20b2eaSKishon Vijay Abraham I *omap_host) 7538d20b2eaSKishon Vijay Abraham I { 7548d20b2eaSKishon Vijay Abraham I struct device *dev = omap_host->dev; 7558d20b2eaSKishon Vijay Abraham I struct sdhci_host *host = omap_host->host; 7568d20b2eaSKishon Vijay Abraham I struct mmc_host *mmc = host->mmc; 7578d20b2eaSKishon Vijay Abraham I u32 *caps = &mmc->caps; 7588d20b2eaSKishon Vijay Abraham I u32 *caps2 = &mmc->caps2; 7598d20b2eaSKishon Vijay Abraham I struct pinctrl_state *state; 7608d20b2eaSKishon Vijay Abraham I struct pinctrl_state **pinctrl_state; 7618d20b2eaSKishon Vijay Abraham I 7628d20b2eaSKishon Vijay Abraham I if (!(omap_host->flags & SDHCI_OMAP_REQUIRE_IODELAY)) 7638d20b2eaSKishon Vijay Abraham I return 0; 7648d20b2eaSKishon Vijay Abraham I 7658d20b2eaSKishon Vijay Abraham I pinctrl_state = devm_kzalloc(dev, sizeof(*pinctrl_state) * 7668d20b2eaSKishon Vijay Abraham I (MMC_TIMING_MMC_HS200 + 1), GFP_KERNEL); 7678d20b2eaSKishon Vijay Abraham I if (!pinctrl_state) 7688d20b2eaSKishon Vijay Abraham I return -ENOMEM; 7698d20b2eaSKishon Vijay Abraham I 7708d20b2eaSKishon Vijay Abraham I omap_host->pinctrl = devm_pinctrl_get(omap_host->dev); 7718d20b2eaSKishon Vijay Abraham I if (IS_ERR(omap_host->pinctrl)) { 7728d20b2eaSKishon Vijay Abraham I dev_err(dev, "Cannot get pinctrl\n"); 7738d20b2eaSKishon Vijay Abraham I return PTR_ERR(omap_host->pinctrl); 7748d20b2eaSKishon Vijay Abraham I } 7758d20b2eaSKishon Vijay Abraham I 7768d20b2eaSKishon Vijay Abraham I state = pinctrl_lookup_state(omap_host->pinctrl, "default"); 7778d20b2eaSKishon Vijay Abraham I if (IS_ERR(state)) { 7788d20b2eaSKishon Vijay Abraham I dev_err(dev, "no pinctrl state for default mode\n"); 7798d20b2eaSKishon Vijay Abraham I return PTR_ERR(state); 7808d20b2eaSKishon Vijay Abraham I } 7818d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_LEGACY] = state; 7828d20b2eaSKishon Vijay Abraham I 7838d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "sdr104", caps, 7848d20b2eaSKishon Vijay Abraham I MMC_CAP_UHS_SDR104); 7858d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 7868d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_UHS_SDR104] = state; 7878d20b2eaSKishon Vijay Abraham I 7888d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "ddr50", caps, 7898d20b2eaSKishon Vijay Abraham I MMC_CAP_UHS_DDR50); 7908d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 7918d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_UHS_DDR50] = state; 7928d20b2eaSKishon Vijay Abraham I 7938d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "sdr50", caps, 7948d20b2eaSKishon Vijay Abraham I MMC_CAP_UHS_SDR50); 7958d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 7968d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_UHS_SDR50] = state; 7978d20b2eaSKishon Vijay Abraham I 7988d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "sdr25", caps, 7998d20b2eaSKishon Vijay Abraham I MMC_CAP_UHS_SDR25); 8008d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8018d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_UHS_SDR25] = state; 8028d20b2eaSKishon Vijay Abraham I 8038d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "sdr12", caps, 8048d20b2eaSKishon Vijay Abraham I MMC_CAP_UHS_SDR12); 8058d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8068d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_UHS_SDR12] = state; 8078d20b2eaSKishon Vijay Abraham I 8088d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "ddr_1_8v", caps, 8098d20b2eaSKishon Vijay Abraham I MMC_CAP_1_8V_DDR); 8108d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8118d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_MMC_DDR52] = state; 8128d20b2eaSKishon Vijay Abraham I 8138d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "hs", caps, 8148d20b2eaSKishon Vijay Abraham I MMC_CAP_SD_HIGHSPEED); 8158d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8168d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_SD_HS] = state; 8178d20b2eaSKishon Vijay Abraham I 8188d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "hs", caps, 8198d20b2eaSKishon Vijay Abraham I MMC_CAP_MMC_HIGHSPEED); 8208d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8218d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_MMC_HS] = state; 8228d20b2eaSKishon Vijay Abraham I 8238d20b2eaSKishon Vijay Abraham I state = sdhci_omap_iodelay_pinctrl_state(omap_host, "hs200_1_8v", caps2, 8248d20b2eaSKishon Vijay Abraham I MMC_CAP2_HS200_1_8V_SDR); 8258d20b2eaSKishon Vijay Abraham I if (!IS_ERR(state)) 8268d20b2eaSKishon Vijay Abraham I pinctrl_state[MMC_TIMING_MMC_HS200] = state; 8278d20b2eaSKishon Vijay Abraham I 8288d20b2eaSKishon Vijay Abraham I omap_host->pinctrl_state = pinctrl_state; 8298d20b2eaSKishon Vijay Abraham I 8308d20b2eaSKishon Vijay Abraham I return 0; 8318d20b2eaSKishon Vijay Abraham I } 8328d20b2eaSKishon Vijay Abraham I 8337d326930SKishon Vijay Abraham I static int sdhci_omap_probe(struct platform_device *pdev) 8347d326930SKishon Vijay Abraham I { 8357d326930SKishon Vijay Abraham I int ret; 8367d326930SKishon Vijay Abraham I u32 offset; 8377d326930SKishon Vijay Abraham I struct device *dev = &pdev->dev; 8387d326930SKishon Vijay Abraham I struct sdhci_host *host; 8397d326930SKishon Vijay Abraham I struct sdhci_pltfm_host *pltfm_host; 8407d326930SKishon Vijay Abraham I struct sdhci_omap_host *omap_host; 8417d326930SKishon Vijay Abraham I struct mmc_host *mmc; 8427d326930SKishon Vijay Abraham I const struct of_device_id *match; 8437d326930SKishon Vijay Abraham I struct sdhci_omap_data *data; 8447d326930SKishon Vijay Abraham I 8457d326930SKishon Vijay Abraham I match = of_match_device(omap_sdhci_match, dev); 8467d326930SKishon Vijay Abraham I if (!match) 8477d326930SKishon Vijay Abraham I return -EINVAL; 8487d326930SKishon Vijay Abraham I 8497d326930SKishon Vijay Abraham I data = (struct sdhci_omap_data *)match->data; 8507d326930SKishon Vijay Abraham I if (!data) { 8517d326930SKishon Vijay Abraham I dev_err(dev, "no sdhci omap data\n"); 8527d326930SKishon Vijay Abraham I return -EINVAL; 8537d326930SKishon Vijay Abraham I } 8547d326930SKishon Vijay Abraham I offset = data->offset; 8557d326930SKishon Vijay Abraham I 8567d326930SKishon Vijay Abraham I host = sdhci_pltfm_init(pdev, &sdhci_omap_pdata, 8577d326930SKishon Vijay Abraham I sizeof(*omap_host)); 8587d326930SKishon Vijay Abraham I if (IS_ERR(host)) { 8597d326930SKishon Vijay Abraham I dev_err(dev, "Failed sdhci_pltfm_init\n"); 8607d326930SKishon Vijay Abraham I return PTR_ERR(host); 8617d326930SKishon Vijay Abraham I } 8627d326930SKishon Vijay Abraham I 8637d326930SKishon Vijay Abraham I pltfm_host = sdhci_priv(host); 8647d326930SKishon Vijay Abraham I omap_host = sdhci_pltfm_priv(pltfm_host); 8657d326930SKishon Vijay Abraham I omap_host->host = host; 8667d326930SKishon Vijay Abraham I omap_host->base = host->ioaddr; 8677d326930SKishon Vijay Abraham I omap_host->dev = dev; 868300df508SKishon Vijay Abraham I omap_host->power_mode = MMC_POWER_UNDEFINED; 8698d20b2eaSKishon Vijay Abraham I omap_host->timing = MMC_TIMING_LEGACY; 8708d20b2eaSKishon Vijay Abraham I omap_host->flags = data->flags; 8717d326930SKishon Vijay Abraham I host->ioaddr += offset; 8727d326930SKishon Vijay Abraham I 8737d326930SKishon Vijay Abraham I mmc = host->mmc; 8747d326930SKishon Vijay Abraham I ret = mmc_of_parse(mmc); 8757d326930SKishon Vijay Abraham I if (ret) 8767d326930SKishon Vijay Abraham I goto err_pltfm_free; 8777d326930SKishon Vijay Abraham I 8787d326930SKishon Vijay Abraham I pltfm_host->clk = devm_clk_get(dev, "fck"); 8797d326930SKishon Vijay Abraham I if (IS_ERR(pltfm_host->clk)) { 8807d326930SKishon Vijay Abraham I ret = PTR_ERR(pltfm_host->clk); 8817d326930SKishon Vijay Abraham I goto err_pltfm_free; 8827d326930SKishon Vijay Abraham I } 8837d326930SKishon Vijay Abraham I 8847d326930SKishon Vijay Abraham I ret = clk_set_rate(pltfm_host->clk, mmc->f_max); 8857d326930SKishon Vijay Abraham I if (ret) { 8867d326930SKishon Vijay Abraham I dev_err(dev, "failed to set clock to %d\n", mmc->f_max); 8877d326930SKishon Vijay Abraham I goto err_pltfm_free; 8887d326930SKishon Vijay Abraham I } 8897d326930SKishon Vijay Abraham I 8907d326930SKishon Vijay Abraham I omap_host->pbias = devm_regulator_get_optional(dev, "pbias"); 8917d326930SKishon Vijay Abraham I if (IS_ERR(omap_host->pbias)) { 8927d326930SKishon Vijay Abraham I ret = PTR_ERR(omap_host->pbias); 8937d326930SKishon Vijay Abraham I if (ret != -ENODEV) 8947d326930SKishon Vijay Abraham I goto err_pltfm_free; 8957d326930SKishon Vijay Abraham I dev_dbg(dev, "unable to get pbias regulator %d\n", ret); 8967d326930SKishon Vijay Abraham I } 8977d326930SKishon Vijay Abraham I omap_host->pbias_enabled = false; 8987d326930SKishon Vijay Abraham I 8997d326930SKishon Vijay Abraham I /* 9007d326930SKishon Vijay Abraham I * omap_device_pm_domain has callbacks to enable the main 9017d326930SKishon Vijay Abraham I * functional clock, interface clock and also configure the 9027d326930SKishon Vijay Abraham I * SYSCONFIG register of omap devices. The callback will be invoked 9037d326930SKishon Vijay Abraham I * as part of pm_runtime_get_sync. 9047d326930SKishon Vijay Abraham I */ 9057d326930SKishon Vijay Abraham I pm_runtime_enable(dev); 9067d326930SKishon Vijay Abraham I ret = pm_runtime_get_sync(dev); 9077d326930SKishon Vijay Abraham I if (ret < 0) { 9087d326930SKishon Vijay Abraham I dev_err(dev, "pm_runtime_get_sync failed\n"); 9097d326930SKishon Vijay Abraham I pm_runtime_put_noidle(dev); 9107d326930SKishon Vijay Abraham I goto err_rpm_disable; 9117d326930SKishon Vijay Abraham I } 9127d326930SKishon Vijay Abraham I 9137d326930SKishon Vijay Abraham I ret = sdhci_omap_set_capabilities(omap_host); 9147d326930SKishon Vijay Abraham I if (ret) { 9157d326930SKishon Vijay Abraham I dev_err(dev, "failed to set system capabilities\n"); 9167d326930SKishon Vijay Abraham I goto err_put_sync; 9177d326930SKishon Vijay Abraham I } 9187d326930SKishon Vijay Abraham I 9198d20b2eaSKishon Vijay Abraham I ret = sdhci_omap_config_iodelay_pinctrl_state(omap_host); 9208d20b2eaSKishon Vijay Abraham I if (ret) 9218d20b2eaSKishon Vijay Abraham I goto err_put_sync; 9228d20b2eaSKishon Vijay Abraham I 9237d326930SKishon Vijay Abraham I host->mmc_host_ops.get_ro = mmc_gpio_get_ro; 9247d326930SKishon Vijay Abraham I host->mmc_host_ops.start_signal_voltage_switch = 9257d326930SKishon Vijay Abraham I sdhci_omap_start_signal_voltage_switch; 9267d326930SKishon Vijay Abraham I host->mmc_host_ops.set_ios = sdhci_omap_set_ios; 92720ea26a1SKishon Vijay Abraham I host->mmc_host_ops.card_busy = sdhci_omap_card_busy; 9289fc2cd76SKishon Vijay Abraham I host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning; 9297d326930SKishon Vijay Abraham I 9307d326930SKishon Vijay Abraham I sdhci_read_caps(host); 9317d326930SKishon Vijay Abraham I host->caps |= SDHCI_CAN_DO_ADMA2; 9327d326930SKishon Vijay Abraham I 9337d326930SKishon Vijay Abraham I ret = sdhci_add_host(host); 9347d326930SKishon Vijay Abraham I if (ret) 9357d326930SKishon Vijay Abraham I goto err_put_sync; 9367d326930SKishon Vijay Abraham I 9377d326930SKishon Vijay Abraham I return 0; 9387d326930SKishon Vijay Abraham I 9397d326930SKishon Vijay Abraham I err_put_sync: 9407d326930SKishon Vijay Abraham I pm_runtime_put_sync(dev); 9417d326930SKishon Vijay Abraham I 9427d326930SKishon Vijay Abraham I err_rpm_disable: 9437d326930SKishon Vijay Abraham I pm_runtime_disable(dev); 9447d326930SKishon Vijay Abraham I 9457d326930SKishon Vijay Abraham I err_pltfm_free: 9467d326930SKishon Vijay Abraham I sdhci_pltfm_free(pdev); 9477d326930SKishon Vijay Abraham I return ret; 9487d326930SKishon Vijay Abraham I } 9497d326930SKishon Vijay Abraham I 9507d326930SKishon Vijay Abraham I static int sdhci_omap_remove(struct platform_device *pdev) 9517d326930SKishon Vijay Abraham I { 9527d326930SKishon Vijay Abraham I struct device *dev = &pdev->dev; 9537d326930SKishon Vijay Abraham I struct sdhci_host *host = platform_get_drvdata(pdev); 9547d326930SKishon Vijay Abraham I 9557d326930SKishon Vijay Abraham I sdhci_remove_host(host, true); 9567d326930SKishon Vijay Abraham I pm_runtime_put_sync(dev); 9577d326930SKishon Vijay Abraham I pm_runtime_disable(dev); 9587d326930SKishon Vijay Abraham I sdhci_pltfm_free(pdev); 9597d326930SKishon Vijay Abraham I 9607d326930SKishon Vijay Abraham I return 0; 9617d326930SKishon Vijay Abraham I } 9627d326930SKishon Vijay Abraham I 9637d326930SKishon Vijay Abraham I static struct platform_driver sdhci_omap_driver = { 9647d326930SKishon Vijay Abraham I .probe = sdhci_omap_probe, 9657d326930SKishon Vijay Abraham I .remove = sdhci_omap_remove, 9667d326930SKishon Vijay Abraham I .driver = { 9677d326930SKishon Vijay Abraham I .name = "sdhci-omap", 9687d326930SKishon Vijay Abraham I .of_match_table = omap_sdhci_match, 9697d326930SKishon Vijay Abraham I }, 9707d326930SKishon Vijay Abraham I }; 9717d326930SKishon Vijay Abraham I 9727d326930SKishon Vijay Abraham I module_platform_driver(sdhci_omap_driver); 9737d326930SKishon Vijay Abraham I 9747d326930SKishon Vijay Abraham I MODULE_DESCRIPTION("SDHCI driver for OMAP SoCs"); 9757d326930SKishon Vijay Abraham I MODULE_AUTHOR("Texas Instruments Inc."); 9767d326930SKishon Vijay Abraham I MODULE_LICENSE("GPL v2"); 9777d326930SKishon Vijay Abraham I MODULE_ALIAS("platform:sdhci_omap"); 978