diff options
Diffstat (limited to 'drivers/mmc/host/omap_hsmmc.c')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 638 |
1 files changed, 367 insertions, 271 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index fedd258cc4e..6b7b7558592 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -21,6 +21,7 @@ #include <linux/debugfs.h> #include <linux/dmaengine.h> #include <linux/seq_file.h> +#include <linux/sizes.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/dma-mapping.h> @@ -30,21 +31,21 @@ #include <linux/of.h> #include <linux/of_gpio.h> #include <linux/of_device.h> -#include <linux/omap-dma.h> +#include <linux/omap-dmaengine.h> #include <linux/mmc/host.h> #include <linux/mmc/core.h> #include <linux/mmc/mmc.h> #include <linux/io.h> #include <linux/gpio.h> #include <linux/regulator/consumer.h> +#include <linux/pinctrl/consumer.h> #include <linux/pm_runtime.h> -#include <mach/hardware.h> -#include <plat/mmc.h> -#include <plat/cpu.h> +#include <linux/platform_data/mmc-omap.h> /* OMAP HSMMC Host Controller Registers */ #define OMAP_HSMMC_SYSSTATUS 0x0014 #define OMAP_HSMMC_CON 0x002C +#define OMAP_HSMMC_SDMASA 0x0100 #define OMAP_HSMMC_BLK 0x0104 #define OMAP_HSMMC_ARG 0x0108 #define OMAP_HSMMC_CMD 0x010C @@ -58,10 +59,12 @@ #define OMAP_HSMMC_STAT 0x0130 #define OMAP_HSMMC_IE 0x0134 #define OMAP_HSMMC_ISE 0x0138 +#define OMAP_HSMMC_AC12 0x013C #define OMAP_HSMMC_CAPA 0x0140 #define VS18 (1 << 26) #define VS30 (1 << 25) +#define HSS (1 << 21) #define SDVS18 (0x5 << 9) #define SDVS30 (0x6 << 9) #define SDVS33 (0x7 << 9) @@ -74,46 +77,70 @@ #define ICE 0x1 #define ICS 0x2 #define CEN (1 << 2) +#define CLKD_MAX 0x3FF /* max clock divisor: 1023 */ #define CLKD_MASK 0x0000FFC0 #define CLKD_SHIFT 6 #define DTO_MASK 0x000F0000 #define DTO_SHIFT 16 -#define INT_EN_MASK 0x307F0033 -#define BWR_ENABLE (1 << 4) -#define BRR_ENABLE (1 << 5) -#define DTO_ENABLE (1 << 20) #define INIT_STREAM (1 << 1) +#define ACEN_ACMD23 (2 << 2) #define DP_SELECT (1 << 21) #define DDIR (1 << 4) -#define DMA_EN 0x1 +#define DMAE 0x1 #define MSBS (1 << 5) #define BCE (1 << 1) #define FOUR_BIT (1 << 1) +#define HSPE (1 << 2) #define DDR (1 << 19) #define DW8 (1 << 5) -#define CC 0x1 -#define TC 0x02 #define OD 0x1 -#define ERR (1 << 15) -#define CMD_TIMEOUT (1 << 16) -#define DATA_TIMEOUT (1 << 20) -#define CMD_CRC (1 << 17) -#define DATA_CRC (1 << 21) -#define CARD_ERR (1 << 28) #define STAT_CLEAR 0xFFFFFFFF #define INIT_STREAM_CMD 0x00000000 #define DUAL_VOLT_OCR_BIT 7 #define SRC (1 << 25) #define SRD (1 << 26) #define SOFTRESET (1 << 1) -#define RESETDONE (1 << 0) + +/* Interrupt masks for IE and ISE register */ +#define CC_EN (1 << 0) +#define TC_EN (1 << 1) +#define BWR_EN (1 << 4) +#define BRR_EN (1 << 5) +#define ERR_EN (1 << 15) +#define CTO_EN (1 << 16) +#define CCRC_EN (1 << 17) +#define CEB_EN (1 << 18) +#define CIE_EN (1 << 19) +#define DTO_EN (1 << 20) +#define DCRC_EN (1 << 21) +#define DEB_EN (1 << 22) +#define ACE_EN (1 << 24) +#define CERR_EN (1 << 28) +#define BADA_EN (1 << 29) + +#define INT_EN_MASK (BADA_EN | CERR_EN | ACE_EN | DEB_EN | DCRC_EN |\ + DTO_EN | CIE_EN | CEB_EN | CCRC_EN | CTO_EN | \ + BRR_EN | BWR_EN | TC_EN | CC_EN) + +#define CNI (1 << 7) +#define ACIE (1 << 4) +#define ACEB (1 << 3) +#define ACCE (1 << 2) +#define ACTO (1 << 1) +#define ACNE (1 << 0) #define MMC_AUTOSUSPEND_DELAY 100 -#define MMC_TIMEOUT_MS 20 +#define MMC_TIMEOUT_MS 20 /* 20 mSec */ +#define MMC_TIMEOUT_US 20000 /* 20000 micro Sec */ #define OMAP_MMC_MIN_CLOCK 400000 #define OMAP_MMC_MAX_CLOCK 52000000 #define DRIVER_NAME "omap_hsmmc" +#define VDD_1V8 1800000 /* 180000 uV */ +#define VDD_3V0 3000000 /* 300000 uV */ +#define VDD_165_195 (ffs(MMC_VDD_165_195) - 1) + +#define AUTO_CMD23 (1 << 1) /* Auto CMD23 support */ /* * One controller can have multiple slots, like on some omap boards using * omap.c controller driver. Luckily this is not currently done on any known @@ -152,6 +179,8 @@ struct omap_hsmmc_host { */ struct regulator *vcc; struct regulator *vcc_aux; + struct regulator *pbias; + bool pbias_enabled; void __iomem *base; resource_size_t mapbase; spinlock_t irq_lock; /* Prevent races with irq handler */ @@ -160,6 +189,10 @@ struct omap_hsmmc_host { unsigned char bus_mode; unsigned char power_mode; int suspended; + u32 con; + u32 hctl; + u32 sysctl; + u32 capa; int irq; int use_dma, dma_ch; struct dma_chan *tx_chan; @@ -171,11 +204,19 @@ struct omap_hsmmc_host { int reqs_blocked; int use_reg; int req_in_progress; + unsigned long clk_rate; + unsigned int flags; struct omap_hsmmc_next next_data; - struct omap_mmc_platform_data *pdata; }; +struct omap_mmc_of_data { + u32 reg_offset; + u8 controller_flags; +}; + +static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host); + static int omap_hsmmc_card_detect(struct device *dev, int slot) { struct omap_hsmmc_host *host = dev_get_drvdata(dev); @@ -245,17 +286,19 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, */ if (!host->vcc) return 0; - /* - * With DT, never turn OFF the regulator. This is because - * the pbias cell programming support is still missing when - * booting with Device tree - */ - if (dev->of_node && !vdd) - return 0; if (mmc_slot(host).before_set_reg) mmc_slot(host).before_set_reg(dev, slot, power_on, vdd); + if (host->pbias) { + if (host->pbias_enabled == 1) { + ret = regulator_disable(host->pbias); + if (!ret) + host->pbias_enabled = 0; + } + regulator_set_voltage(host->pbias, VDD_3V0, VDD_3V0); + } + /* * Assume Vcc regulator is used only to power the card ... OMAP * VDDS is used to power the pins, optionally with a transceiver to @@ -270,11 +313,12 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, * chips/cards need an interface voltage rail too. */ if (power_on) { - ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); + if (host->vcc) + ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); /* Enable interface voltage rail, if needed */ if (ret == 0 && host->vcc_aux) { ret = regulator_enable(host->vcc_aux); - if (ret < 0) + if (ret < 0 && host->vcc) ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0); } @@ -282,16 +326,34 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, /* Shut down the rail */ if (host->vcc_aux) ret = regulator_disable(host->vcc_aux); - if (!ret) { + if (host->vcc) { /* Then proceed to shut down the local regulator */ ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0); } } + if (host->pbias) { + if (vdd <= VDD_165_195) + ret = regulator_set_voltage(host->pbias, VDD_1V8, + VDD_1V8); + else + ret = regulator_set_voltage(host->pbias, VDD_3V0, + VDD_3V0); + if (ret < 0) + goto error_set_power; + + if (host->pbias_enabled == 0) { + ret = regulator_enable(host->pbias); + if (!ret) + host->pbias_enabled = 1; + } + } + if (mmc_slot(host).after_set_reg) mmc_slot(host).after_set_reg(dev, slot, power_on, vdd); +error_set_power: return ret; } @@ -300,12 +362,12 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) struct regulator *reg; int ocr_value = 0; - reg = regulator_get(host->dev, "vmmc"); + reg = devm_regulator_get(host->dev, "vmmc"); if (IS_ERR(reg)) { - dev_dbg(host->dev, "vmmc regulator missing\n"); + dev_err(host->dev, "unable to get vmmc regulator %ld\n", + PTR_ERR(reg)); return PTR_ERR(reg); } else { - mmc_slot(host).set_power = omap_hsmmc_set_power; host->vcc = reg; ocr_value = mmc_regulator_get_ocrmask(reg); if (!mmc_slot(host).ocr_mask) { @@ -318,31 +380,29 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) return -EINVAL; } } + } + mmc_slot(host).set_power = omap_hsmmc_set_power; - /* Allow an aux regulator */ - reg = regulator_get(host->dev, "vmmc_aux"); - host->vcc_aux = IS_ERR(reg) ? NULL : reg; + /* Allow an aux regulator */ + reg = devm_regulator_get_optional(host->dev, "vmmc_aux"); + host->vcc_aux = IS_ERR(reg) ? NULL : reg; - /* For eMMC do not power off when not in sleep state */ - if (mmc_slot(host).no_regulator_off_init) - return 0; - /* - * UGLY HACK: workaround regulator framework bugs. - * When the bootloader leaves a supply active, it's - * initialized with zero usecount ... and we can't - * disable it without first enabling it. Until the - * framework is fixed, we need a workaround like this - * (which is safe for MMC, but not in general). - */ - if (regulator_is_enabled(host->vcc) > 0 || - (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) { - int vdd = ffs(mmc_slot(host).ocr_mask) - 1; + reg = devm_regulator_get_optional(host->dev, "pbias"); + host->pbias = IS_ERR(reg) ? NULL : reg; - mmc_slot(host).set_power(host->dev, host->slot_id, - 1, vdd); - mmc_slot(host).set_power(host->dev, host->slot_id, - 0, 0); - } + /* For eMMC do not power off when not in sleep state */ + if (mmc_slot(host).no_regulator_off_init) + return 0; + /* + * To disable boot_on regulator, enable regulator + * to increase usecount and then disable it. + */ + if ((host->vcc && regulator_is_enabled(host->vcc) > 0) || + (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) { + int vdd = ffs(mmc_slot(host).ocr_mask) - 1; + + mmc_slot(host).set_power(host->dev, host->slot_id, 1, vdd); + mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0); } return 0; @@ -350,8 +410,6 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) { - regulator_put(host->vcc); - regulator_put(host->vcc_aux); mmc_slot(host).set_power = NULL; } @@ -455,13 +513,13 @@ static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host, unsigned int irq_mask; if (host->use_dma) - irq_mask = INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE); + irq_mask = INT_EN_MASK & ~(BRR_EN | BWR_EN); else irq_mask = INT_EN_MASK; /* Disable timeout for erases */ if (cmd->opcode == MMC_ERASE) - irq_mask &= ~DTO_ENABLE; + irq_mask &= ~DTO_EN; OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); OMAP_HSMMC_WRITE(host->base, ISE, irq_mask); @@ -482,8 +540,8 @@ static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios) if (ios->clock) { dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock); - if (dsor > 250) - dsor = 250; + if (dsor > CLKD_MAX) + dsor = CLKD_MAX; } return dsor; @@ -494,6 +552,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) struct mmc_ios *ios = &host->mmc->ios; unsigned long regval; unsigned long timeout; + unsigned long clkdiv; dev_vdbg(mmc_dev(host->mmc), "Set clock to %uHz\n", ios->clock); @@ -501,7 +560,8 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) regval = OMAP_HSMMC_READ(host->base, SYSCTL); regval = regval & ~(CLKD_MASK | DTO_MASK); - regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16); + clkdiv = calc_divisor(host, ios); + regval = regval | (clkdiv << 6) | (DTO << 16); OMAP_HSMMC_WRITE(host->base, SYSCTL, regval); OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | ICE); @@ -512,6 +572,27 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) && time_before(jiffies, timeout)) cpu_relax(); + /* + * Enable High-Speed Support + * Pre-Requisites + * - Controller should support High-Speed-Enable Bit + * - Controller should not be using DDR Mode + * - Controller should advertise that it supports High Speed + * in capabilities register + * - MMC/SD clock coming out of controller > 25MHz + */ + if ((mmc_slot(host).features & HSMMC_HAS_HSPE_SUPPORT) && + (ios->timing != MMC_TIMING_MMC_DDR52) && + ((OMAP_HSMMC_READ(host->base, CAPA) & HSS) == HSS)) { + regval = OMAP_HSMMC_READ(host->base, HCTL); + if (clkdiv && (clk_get_rate(host->fclk)/clkdiv) > 25000000) + regval |= HSPE; + else + regval &= ~HSPE; + + OMAP_HSMMC_WRITE(host->base, HCTL, regval); + } + omap_hsmmc_start_clock(host); } @@ -521,7 +602,7 @@ static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host *host) u32 con; con = OMAP_HSMMC_READ(host->base, CON); - if (ios->timing == MMC_TIMING_UHS_DDR50) + if (ios->timing == MMC_TIMING_MMC_DDR52) con |= DDR; /* configure in DDR mode */ else con &= ~DDR; @@ -563,24 +644,16 @@ static void omap_hsmmc_set_bus_mode(struct omap_hsmmc_host *host) static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) { struct mmc_ios *ios = &host->mmc->ios; - struct omap_mmc_platform_data *pdata = host->pdata; - int context_loss = 0; u32 hctl, capa; unsigned long timeout; - if (pdata->get_context_loss_count) { - context_loss = pdata->get_context_loss_count(host->dev); - if (context_loss < 0) - return 1; - } - - dev_dbg(mmc_dev(host->mmc), "context was %slost\n", - context_loss == host->context_loss ? "not " : ""); - if (host->context_loss == context_loss) - return 1; + if (host->con == OMAP_HSMMC_READ(host->base, CON) && + host->hctl == OMAP_HSMMC_READ(host->base, HCTL) && + host->sysctl == OMAP_HSMMC_READ(host->base, SYSCTL) && + host->capa == OMAP_HSMMC_READ(host->base, CAPA)) + return 0; - if (!OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) - return 1; + host->context_loss++; if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { if (host->power_mode != MMC_POWER_OFF && @@ -621,9 +694,8 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) omap_hsmmc_set_bus_mode(host); out: - host->context_loss = context_loss; - - dev_dbg(mmc_dev(host->mmc), "context is restored\n"); + dev_dbg(mmc_dev(host->mmc), "context is restored: restore count %d\n", + host->context_loss); return 0; } @@ -632,15 +704,10 @@ out: */ static void omap_hsmmc_context_save(struct omap_hsmmc_host *host) { - struct omap_mmc_platform_data *pdata = host->pdata; - int context_loss; - - if (pdata->get_context_loss_count) { - context_loss = pdata->get_context_loss_count(host->dev); - if (context_loss < 0) - return; - host->context_loss = context_loss; - } + host->con = OMAP_HSMMC_READ(host->base, CON); + host->hctl = OMAP_HSMMC_READ(host->base, HCTL); + host->sysctl = OMAP_HSMMC_READ(host->base, SYSCTL); + host->capa = OMAP_HSMMC_READ(host->base, CAPA); } #else @@ -676,8 +743,8 @@ static void send_init_stream(struct omap_hsmmc_host *host) OMAP_HSMMC_WRITE(host->base, CMD, INIT_STREAM_CMD); timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); - while ((reg != CC) && time_before(jiffies, timeout)) - reg = OMAP_HSMMC_READ(host->base, STAT) & CC; + while ((reg != CC_EN) && time_before(jiffies, timeout)) + reg = OMAP_HSMMC_READ(host->base, STAT) & CC_EN; OMAP_HSMMC_WRITE(host->base, CON, OMAP_HSMMC_READ(host->base, CON) & ~INIT_STREAM); @@ -759,6 +826,11 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd, cmdreg = (cmd->opcode << 24) | (resptype << 16) | (cmdtype << 22); + if ((host->flags & AUTO_CMD23) && mmc_op_multi(cmd->opcode) && + host->mrq->sbc) { + cmdreg |= ACEN_ACMD23; + OMAP_HSMMC_WRITE(host->base, SDMASA, host->mrq->sbc->arg); + } if (data) { cmdreg |= DP_SELECT | MSBS | BCE; if (data->flags & MMC_DATA_READ) @@ -768,7 +840,7 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd, } if (host->use_dma) - cmdreg |= DMA_EN; + cmdreg |= DMAE; host->req_in_progress = 1; @@ -836,11 +908,10 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data) else data->bytes_xfered = 0; - if (!data->stop) { + if (data->stop && (data->error || !host->mrq->sbc)) + omap_hsmmc_start_command(host, data->stop, NULL); + else omap_hsmmc_request_done(host, data->mrq); - return; - } - omap_hsmmc_start_command(host, data->stop, NULL); } /* @@ -849,6 +920,15 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data) static void omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd) { + if (host->mrq->sbc && (host->cmd == host->mrq->sbc) && + !host->mrq->sbc->error && !(host->flags & AUTO_CMD23)) { + host->cmd = NULL; + omap_hsmmc_start_dma_transfer(host); + omap_hsmmc_start_command(host, host->mrq->cmd, + host->mrq->data); + return; + } + host->cmd = NULL; if (cmd->flags & MMC_RSP_PRESENT) { @@ -864,7 +944,7 @@ omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd) } } if ((host->data == NULL && !host->response_busy) || cmd->error) - omap_hsmmc_request_done(host, cmd->mrq); + omap_hsmmc_request_done(host, host->mrq); } /* @@ -941,8 +1021,7 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host, unsigned long bit) { unsigned long i = 0; - unsigned long limit = (loops_per_jiffy * - msecs_to_jiffies(MMC_TIMEOUT_MS)); + unsigned long limit = MMC_TIMEOUT_US; OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | bit); @@ -954,13 +1033,13 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host, if (mmc_slot(host).features & HSMMC_HAS_UPDATED_RESET) { while ((!(OMAP_HSMMC_READ(host->base, SYSCTL) & bit)) && (i++ < limit)) - cpu_relax(); + udelay(1); } i = 0; while ((OMAP_HSMMC_READ(host->base, SYSCTL) & bit) && (i++ < limit)) - cpu_relax(); + udelay(1); if (OMAP_HSMMC_READ(host->base, SYSCTL) & bit) dev_err(mmc_dev(host->mmc), @@ -968,43 +1047,65 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host, __func__); } -static void hsmmc_command_incomplete(struct omap_hsmmc_host *host, int err) +static void hsmmc_command_incomplete(struct omap_hsmmc_host *host, + int err, int end_cmd) { - omap_hsmmc_reset_controller_fsm(host, SRC); - host->cmd->error = err; + if (end_cmd) { + omap_hsmmc_reset_controller_fsm(host, SRC); + if (host->cmd) + host->cmd->error = err; + } if (host->data) { omap_hsmmc_reset_controller_fsm(host, SRD); omap_hsmmc_dma_cleanup(host, err); - } - + } else if (host->mrq && host->mrq->cmd) + host->mrq->cmd->error = err; } static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status) { struct mmc_data *data; int end_cmd = 0, end_trans = 0; + int error = 0; data = host->data; dev_vdbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status); - if (status & ERR) { + if (status & ERR_EN) { omap_hsmmc_dbg_report_irq(host, status); - if (status & (CMD_TIMEOUT | DATA_TIMEOUT)) - hsmmc_command_incomplete(host, -ETIMEDOUT); - else if (status & (CMD_CRC | DATA_CRC)) - hsmmc_command_incomplete(host, -EILSEQ); - end_cmd = 1; + if (status & (CTO_EN | CCRC_EN)) + end_cmd = 1; + if (status & (CTO_EN | DTO_EN)) + hsmmc_command_incomplete(host, -ETIMEDOUT, end_cmd); + else if (status & (CCRC_EN | DCRC_EN)) + hsmmc_command_incomplete(host, -EILSEQ, end_cmd); + + if (status & ACE_EN) { + u32 ac12; + ac12 = OMAP_HSMMC_READ(host->base, AC12); + if (!(ac12 & ACNE) && host->mrq->sbc) { + end_cmd = 1; + if (ac12 & ACTO) + error = -ETIMEDOUT; + else if (ac12 & (ACCE | ACEB | ACIE)) + error = -EILSEQ; + host->mrq->sbc->error = error; + hsmmc_command_incomplete(host, error, end_cmd); + } + dev_dbg(mmc_dev(host->mmc), "AC12 err: 0x%x\n", ac12); + } if (host->data || host->response_busy) { - end_trans = 1; + end_trans = !end_cmd; host->response_busy = 0; } } - if (end_cmd || ((status & CC) && host->cmd)) + OMAP_HSMMC_WRITE(host->base, STAT, status); + if (end_cmd || ((status & CC_EN) && host->cmd)) omap_hsmmc_cmd_done(host, host->cmd); - if ((end_trans || (status & TC)) && host->mrq) + if ((end_trans || (status & TC_EN)) && host->mrq) omap_hsmmc_xfer_done(host, data); } @@ -1021,7 +1122,6 @@ static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id) omap_hsmmc_do_irq(host, status); /* Flush posted write */ - OMAP_HSMMC_WRITE(host->base, STAT, status); status = OMAP_HSMMC_READ(host->base, STAT); } @@ -1101,7 +1201,7 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd) return 0; err: - dev_dbg(mmc_dev(host->mmc), "Unable to switch operating voltage\n"); + dev_err(mmc_dev(host->mmc), "Unable to switch operating voltage\n"); return ret; } @@ -1138,9 +1238,6 @@ static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id) struct omap_mmc_slot_data *slot = &mmc_slot(host); int carddetect; - if (host->suspended) - return IRQ_HANDLED; - sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch"); if (slot->card_detect) @@ -1206,8 +1303,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host, } /* Check if next job is already prepared */ - if (next || - (!next && data->host_cookie != host->next_data.cookie)) { + if (next || data->host_cookie != host->next_data.cookie) { dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len, omap_hsmmc_get_dma_dir(host, data)); @@ -1232,7 +1328,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host, /* * Routine to configure and start DMA for the MMC card */ -static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host, +static int omap_hsmmc_setup_dma_transfer(struct omap_hsmmc_host *host, struct mmc_request *req) { struct dma_slave_config cfg; @@ -1291,8 +1387,6 @@ static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host, host->dma_ch = 1; - dma_async_issue_pending(chan); - return 0; } @@ -1308,7 +1402,7 @@ static void set_data_timeout(struct omap_hsmmc_host *host, if (clkd == 0) clkd = 1; - cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd); + cycle_ns = 1000000000 / (host->clk_rate / clkd); timeout = timeout_ns / cycle_ns; timeout += timeout_clks; if (timeout) { @@ -1333,6 +1427,21 @@ static void set_data_timeout(struct omap_hsmmc_host *host, OMAP_HSMMC_WRITE(host->base, SYSCTL, reg); } +static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host) +{ + struct mmc_request *req = host->mrq; + struct dma_chan *chan; + + if (!req->data) + return; + OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz) + | (req->data->blocks << 16)); + set_data_timeout(host, req->data->timeout_ns, + req->data->timeout_clks); + chan = omap_hsmmc_get_dma_chan(host, req->data); + dma_async_issue_pending(chan); +} + /* * Configure block length for MMC/SD cards and initiate the transfer. */ @@ -1353,14 +1462,10 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req) return 0; } - OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz) - | (req->data->blocks << 16)); - set_data_timeout(host, req->data->timeout_ns, req->data->timeout_clks); - if (host->use_dma) { - ret = omap_hsmmc_start_dma_transfer(host, req); + ret = omap_hsmmc_setup_dma_transfer(host, req); if (ret != 0) { - dev_dbg(mmc_dev(host->mmc), "MMC start dma failure\n"); + dev_err(mmc_dev(host->mmc), "MMC start dma failure\n"); return ret; } } @@ -1432,6 +1537,7 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) host->reqs_blocked = 0; WARN_ON(host->mrq != NULL); host->mrq = req; + host->clk_rate = clk_get_rate(host->fclk); err = omap_hsmmc_prepare_data(host, req); if (err) { req->cmd->error = err; @@ -1441,7 +1547,12 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) mmc_request_done(mmc, req); return; } + if (req->sbc && !(host->flags & AUTO_CMD23)) { + omap_hsmmc_start_command(host, req->sbc, NULL); + return; + } + omap_hsmmc_start_dma_transfer(host); omap_hsmmc_start_command(host, req->cmd, req->data); } @@ -1479,13 +1590,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * of external transceiver; but they all handle 1.8V. */ if ((OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET) && - (ios->vdd == DUAL_VOLT_OCR_BIT) && - /* - * With pbias cell programming missing, this - * can't be allowed when booting with device - * tree. - */ - !host->dev->of_node) { + (ios->vdd == DUAL_VOLT_OCR_BIT)) { /* * The mmc_select_voltage fn of the core does * not seem to set the power_mode to @@ -1595,18 +1700,9 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data) { struct mmc_host *mmc = s->private; struct omap_hsmmc_host *host = mmc_priv(mmc); - int context_loss = 0; - - if (host->pdata->get_context_loss_count) - context_loss = host->pdata->get_context_loss_count(host->dev); - seq_printf(s, "mmc%d:\n ctx_loss:\t%d:%d\n\nregs:\n", - mmc->index, host->context_loss, context_loss); - - if (host->suspended) { - seq_printf(s, "host suspended, can't read registers\n"); - return 0; - } + seq_printf(s, "mmc%d:\n ctx_loss:\t%d\n\nregs:\n", + mmc->index, host->context_loss); pm_runtime_get_sync(host->dev); @@ -1657,18 +1753,29 @@ static void omap_hsmmc_debugfs(struct mmc_host *mmc) #endif #ifdef CONFIG_OF -static u16 omap4_reg_offset = 0x100; +static const struct omap_mmc_of_data omap3_pre_es3_mmc_of_data = { + /* See 35xx errata 2.1.1.128 in SPRZ278F */ + .controller_flags = OMAP_HSMMC_BROKEN_MULTIBLOCK_READ, +}; + +static const struct omap_mmc_of_data omap4_mmc_of_data = { + .reg_offset = 0x100, +}; static const struct of_device_id omap_mmc_of_match[] = { { .compatible = "ti,omap2-hsmmc", }, { + .compatible = "ti,omap3-pre-es3-hsmmc", + .data = &omap3_pre_es3_mmc_of_data, + }, + { .compatible = "ti,omap3-hsmmc", }, { .compatible = "ti,omap4-hsmmc", - .data = &omap4_reg_offset, + .data = &omap4_mmc_of_data, }, {}, }; @@ -1678,19 +1785,25 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) { struct omap_mmc_platform_data *pdata; struct device_node *np = dev->of_node; - u32 bus_width; + u32 bus_width, max_freq; + int cd_gpio, wp_gpio; + + cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); + wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); + if (cd_gpio == -EPROBE_DEFER || wp_gpio == -EPROBE_DEFER) + return ERR_PTR(-EPROBE_DEFER); pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) - return NULL; /* out of memory */ + return ERR_PTR(-ENOMEM); /* out of memory */ if (of_find_property(np, "ti,dual-volt", NULL)) pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT; /* This driver only supports 1 slot */ pdata->nr_slots = 1; - pdata->slots[0].switch_pin = of_get_named_gpio(np, "cd-gpios", 0); - pdata->slots[0].gpio_wp = of_get_named_gpio(np, "wp-gpios", 0); + pdata->slots[0].switch_pin = cd_gpio; + pdata->slots[0].gpio_wp = wp_gpio; if (of_find_property(np, "ti,non-removable", NULL)) { pdata->slots[0].nonremovable = true; @@ -1705,17 +1818,29 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) if (of_find_property(np, "ti,needs-special-reset", NULL)) pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET; + if (!of_property_read_u32(np, "max-frequency", &max_freq)) + pdata->max_freq = max_freq; + + if (of_find_property(np, "ti,needs-special-hs-handling", NULL)) + pdata->slots[0].features |= HSMMC_HAS_HSPE_SUPPORT; + + if (of_find_property(np, "keep-power-in-suspend", NULL)) + pdata->slots[0].pm_caps |= MMC_PM_KEEP_POWER; + + if (of_find_property(np, "enable-sdio-wakeup", NULL)) + pdata->slots[0].pm_caps |= MMC_PM_WAKE_SDIO_IRQ; + return pdata; } #else static inline struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) { - return NULL; + return ERR_PTR(-EINVAL); } #endif -static int __devinit omap_hsmmc_probe(struct platform_device *pdev) +static int omap_hsmmc_probe(struct platform_device *pdev) { struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; struct mmc_host *mmc; @@ -1725,13 +1850,21 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) const struct of_device_id *match; dma_cap_mask_t mask; unsigned tx_req, rx_req; + struct pinctrl *pinctrl; + const struct omap_mmc_of_data *data; + void __iomem *base; match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev); if (match) { pdata = of_get_hsmmc_pdata(&pdev->dev); + + if (IS_ERR(pdata)) + return PTR_ERR(pdata); + if (match->data) { - const u16 *offsetp = match->data; - pdata->reg_offset = *offsetp; + data = match->data; + pdata->reg_offset = data->reg_offset; + pdata->controller_flags |= data->controller_flags; } } @@ -1750,9 +1883,9 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) if (res == NULL || irq < 0) return -ENXIO; - res = request_mem_region(res->start, resource_size(res), pdev->name); - if (res == NULL) - return -EBUSY; + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); ret = omap_hsmmc_gpio_init(pdata); if (ret) @@ -1773,21 +1906,15 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) host->irq = irq; host->slot_id = 0; host->mapbase = res->start + pdata->reg_offset; - host->base = ioremap(host->mapbase, SZ_4K); + host->base = base + pdata->reg_offset; host->power_mode = MMC_POWER_OFF; host->next_data.cookie = 1; + host->pbias_enabled = 0; platform_set_drvdata(pdev, host); mmc->ops = &omap_hsmmc_ops; - /* - * If regulator_disable can only put vcc_aux to sleep then there is - * no off state. - */ - if (mmc_slot(host).vcc_aux_disable_is_sleep) - mmc_slot(host).no_off = 1; - mmc->f_min = OMAP_MMC_MIN_CLOCK; if (pdata->max_freq > 0) @@ -1797,7 +1924,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) spin_lock_init(&host->irq_lock); - host->fclk = clk_get(&pdev->dev, "fck"); + host->fclk = devm_clk_get(&pdev->dev, "fck"); if (IS_ERR(host->fclk)) { ret = PTR_ERR(host->fclk); host->fclk = NULL; @@ -1816,16 +1943,14 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_context_save(host); - host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck"); + host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck"); /* * MMC can still work without debounce clock. */ if (IS_ERR(host->dbclk)) { - dev_warn(mmc_dev(host->mmc), "Failed to get debounce clk\n"); host->dbclk = NULL; } else if (clk_prepare_enable(host->dbclk) != 0) { dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n"); - clk_put(host->dbclk); host->dbclk = NULL; } @@ -1852,33 +1977,41 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_conf_bus_power(host); - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); - ret = -ENXIO; - goto err_irq; - } - tx_req = res->start; + if (!pdev->dev.of_node) { + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); + ret = -ENXIO; + goto err_irq; + } + tx_req = res->start; - res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); - if (!res) { - dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); - ret = -ENXIO; - goto err_irq; + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); + ret = -ENXIO; + goto err_irq; + } + rx_req = res->start; } - rx_req = res->start; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req); + host->rx_chan = + dma_request_slave_channel_compat(mask, omap_dma_filter_fn, + &rx_req, &pdev->dev, "rx"); + if (!host->rx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req); ret = -ENXIO; goto err_irq; } - host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req); + host->tx_chan = + dma_request_slave_channel_compat(mask, omap_dma_filter_fn, + &tx_req, &pdev->dev, "tx"); + if (!host->tx_chan) { dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req); ret = -ENXIO; @@ -1886,18 +2019,18 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) } /* Request IRQ for MMC operations */ - ret = request_irq(host->irq, omap_hsmmc_irq, 0, + ret = devm_request_irq(&pdev->dev, host->irq, omap_hsmmc_irq, 0, mmc_hostname(mmc), host); if (ret) { - dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n"); + dev_err(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n"); goto err_irq; } if (pdata->init != NULL) { if (pdata->init(&pdev->dev) != 0) { - dev_dbg(mmc_dev(host->mmc), + dev_err(mmc_dev(host->mmc), "Unable to configure MMC IRQs\n"); - goto err_irq_cd_init; + goto err_irq; } } @@ -1912,13 +2045,13 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) /* Request IRQ for card detect */ if ((mmc_slot(host).card_detect_irq)) { - ret = request_threaded_irq(mmc_slot(host).card_detect_irq, - NULL, - omap_hsmmc_detect, + ret = devm_request_threaded_irq(&pdev->dev, + mmc_slot(host).card_detect_irq, + NULL, omap_hsmmc_detect, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, mmc_hostname(mmc), host); if (ret) { - dev_dbg(mmc_dev(host->mmc), + dev_err(mmc_dev(host->mmc), "Unable to grab MMC CD IRQ\n"); goto err_irq_cd; } @@ -1928,6 +2061,11 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_disable_irq(host); + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) + dev_warn(&pdev->dev, + "pins are not configured from the driver\n"); + omap_hsmmc_protect_card(host); mmc_add_host(mmc); @@ -1952,15 +2090,12 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev) err_slot_name: mmc_remove_host(mmc); - free_irq(mmc_slot(host).card_detect_irq, host); err_irq_cd: if (host->use_reg) omap_hsmmc_reg_put(host); err_reg: if (host->pdata->cleanup) host->pdata->cleanup(&pdev->dev); -err_irq_cd_init: - free_irq(host->irq, host); err_irq: if (host->tx_chan) dma_release_channel(host->tx_chan); @@ -1968,28 +2103,19 @@ err_irq: dma_release_channel(host->rx_chan); pm_runtime_put_sync(host->dev); pm_runtime_disable(host->dev); - clk_put(host->fclk); - if (host->dbclk) { + if (host->dbclk) clk_disable_unprepare(host->dbclk); - clk_put(host->dbclk); - } err1: - iounmap(host->base); - platform_set_drvdata(pdev, NULL); mmc_free_host(mmc); err_alloc: omap_hsmmc_gpio_free(pdata); err: - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res) - release_mem_region(res->start, resource_size(res)); return ret; } -static int __devexit omap_hsmmc_remove(struct platform_device *pdev) +static int omap_hsmmc_remove(struct platform_device *pdev) { struct omap_hsmmc_host *host = platform_get_drvdata(pdev); - struct resource *res; pm_runtime_get_sync(host->dev); mmc_remove_host(host->mmc); @@ -1997,9 +2123,6 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) omap_hsmmc_reg_put(host); if (host->pdata->cleanup) host->pdata->cleanup(&pdev->dev); - free_irq(host->irq, host); - if (mmc_slot(host).card_detect_irq) - free_irq(mmc_slot(host).card_detect_irq, host); if (host->tx_chan) dma_release_channel(host->tx_chan); @@ -2008,57 +2131,43 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) pm_runtime_put_sync(host->dev); pm_runtime_disable(host->dev); - clk_put(host->fclk); - if (host->dbclk) { + if (host->dbclk) clk_disable_unprepare(host->dbclk); - clk_put(host->dbclk); - } omap_hsmmc_gpio_free(host->pdata); - iounmap(host->base); mmc_free_host(host->mmc); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res) - release_mem_region(res->start, resource_size(res)); - platform_set_drvdata(pdev, NULL); - return 0; } #ifdef CONFIG_PM +static int omap_hsmmc_prepare(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->suspend) + return host->pdata->suspend(dev, host->slot_id); + + return 0; +} + +static void omap_hsmmc_complete(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->resume) + host->pdata->resume(dev, host->slot_id); + +} + static int omap_hsmmc_suspend(struct device *dev) { - int ret = 0; struct omap_hsmmc_host *host = dev_get_drvdata(dev); if (!host) return 0; - if (host && host->suspended) - return 0; - pm_runtime_get_sync(host->dev); - host->suspended = 1; - if (host->pdata->suspend) { - ret = host->pdata->suspend(dev, host->slot_id); - if (ret) { - dev_dbg(dev, "Unable to handle MMC board" - " level suspend\n"); - host->suspended = 0; - return ret; - } - } - ret = mmc_suspend_host(host->mmc); - - if (ret) { - host->suspended = 0; - if (host->pdata->resume) { - if (host->pdata->resume(dev, host->slot_id)) - dev_dbg(dev, "Unmask interrupt failed\n"); - } - goto err; - } if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) { omap_hsmmc_disable_irq(host); @@ -2068,23 +2177,19 @@ static int omap_hsmmc_suspend(struct device *dev) if (host->dbclk) clk_disable_unprepare(host->dbclk); -err: + pm_runtime_put_sync(host->dev); - return ret; + return 0; } /* Routine to resume the MMC device */ static int omap_hsmmc_resume(struct device *dev) { - int ret = 0; struct omap_hsmmc_host *host = dev_get_drvdata(dev); if (!host) return 0; - if (host && !host->suspended) - return 0; - pm_runtime_get_sync(host->dev); if (host->dbclk) @@ -2093,29 +2198,18 @@ static int omap_hsmmc_resume(struct device *dev) if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) omap_hsmmc_conf_bus_power(host); - if (host->pdata->resume) { - ret = host->pdata->resume(dev, host->slot_id); - if (ret) - dev_dbg(dev, "Unmask interrupt failed\n"); - } - omap_hsmmc_protect_card(host); - /* Notify the core to resume the host */ - ret = mmc_resume_host(host->mmc); - if (ret == 0) - host->suspended = 0; - pm_runtime_mark_last_busy(host->dev); pm_runtime_put_autosuspend(host->dev); - - return ret; - + return 0; } #else +#define omap_hsmmc_prepare NULL +#define omap_hsmmc_complete NULL #define omap_hsmmc_suspend NULL -#define omap_hsmmc_resume NULL +#define omap_hsmmc_resume NULL #endif static int omap_hsmmc_runtime_suspend(struct device *dev) @@ -2143,13 +2237,15 @@ static int omap_hsmmc_runtime_resume(struct device *dev) static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { .suspend = omap_hsmmc_suspend, .resume = omap_hsmmc_resume, + .prepare = omap_hsmmc_prepare, + .complete = omap_hsmmc_complete, .runtime_suspend = omap_hsmmc_runtime_suspend, .runtime_resume = omap_hsmmc_runtime_resume, }; static struct platform_driver omap_hsmmc_driver = { .probe = omap_hsmmc_probe, - .remove = __devexit_p(omap_hsmmc_remove), + .remove = omap_hsmmc_remove, .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, |