--- zzzz-none-000/linux-2.6.19.2/drivers/mmc/omap.c 2007-01-10 19:10:37.000000000 +0000 +++ davinci-8020-5505/linux-2.6.19.2/drivers/mmc/omap.c 2007-01-11 07:38:19.000000000 +0000 @@ -38,7 +38,57 @@ #include #include -#include "omap.h" +#define OMAP_MMC_REG_CMD 0x00 +#define OMAP_MMC_REG_ARGL 0x04 +#define OMAP_MMC_REG_ARGH 0x08 +#define OMAP_MMC_REG_CON 0x0c +#define OMAP_MMC_REG_STAT 0x10 +#define OMAP_MMC_REG_IE 0x14 +#define OMAP_MMC_REG_CTO 0x18 +#define OMAP_MMC_REG_DTO 0x1c +#define OMAP_MMC_REG_DATA 0x20 +#define OMAP_MMC_REG_BLEN 0x24 +#define OMAP_MMC_REG_NBLK 0x28 +#define OMAP_MMC_REG_BUF 0x2c +#define OMAP_MMC_REG_SDIO 0x34 +#define OMAP_MMC_REG_REV 0x3c +#define OMAP_MMC_REG_RSP0 0x40 +#define OMAP_MMC_REG_RSP1 0x44 +#define OMAP_MMC_REG_RSP2 0x48 +#define OMAP_MMC_REG_RSP3 0x4c +#define OMAP_MMC_REG_RSP4 0x50 +#define OMAP_MMC_REG_RSP5 0x54 +#define OMAP_MMC_REG_RSP6 0x58 +#define OMAP_MMC_REG_RSP7 0x5c +#define OMAP_MMC_REG_IOSR 0x60 +#define OMAP_MMC_REG_SYSC 0x64 +#define OMAP_MMC_REG_SYSS 0x68 + +#define OMAP_MMC_STAT_CARD_ERR (1 << 14) +#define OMAP_MMC_STAT_CARD_IRQ (1 << 13) +#define OMAP_MMC_STAT_OCR_BUSY (1 << 12) +#define OMAP_MMC_STAT_A_EMPTY (1 << 11) +#define OMAP_MMC_STAT_A_FULL (1 << 10) +#define OMAP_MMC_STAT_CMD_CRC (1 << 8) +#define OMAP_MMC_STAT_CMD_TOUT (1 << 7) +#define OMAP_MMC_STAT_DATA_CRC (1 << 6) +#define OMAP_MMC_STAT_DATA_TOUT (1 << 5) +#define OMAP_MMC_STAT_END_BUSY (1 << 4) +#define OMAP_MMC_STAT_END_OF_DATA (1 << 3) +#define OMAP_MMC_STAT_CARD_BUSY (1 << 2) +#define OMAP_MMC_STAT_END_OF_CMD (1 << 0) + +#define OMAP_MMC_READ(host, reg) __raw_readw((host)->virt_base + OMAP_MMC_REG_##reg) +#define OMAP_MMC_WRITE(host, reg, val) __raw_writew((val), (host)->virt_base + OMAP_MMC_REG_##reg) + +/* + * Command types + */ +#define OMAP_MMC_CMDTYPE_BC 0 +#define OMAP_MMC_CMDTYPE_BCR 1 +#define OMAP_MMC_CMDTYPE_AC 2 +#define OMAP_MMC_CMDTYPE_ADTC 3 + #define DRIVER_NAME "mmci-omap" #define RSP_TYPE(x) ((x) & ~(MMC_RSP_BUSY|MMC_RSP_OPCODE)) @@ -60,8 +110,9 @@ unsigned char id; /* 16xx chips have 2 MMC blocks */ struct clk * iclk; struct clk * fclk; - struct resource *res; - void __iomem *base; + struct resource *mem_res; + void __iomem *virt_base; + unsigned int phys_base; int irq; unsigned char bus_mode; unsigned char hw_bus_mode; @@ -191,16 +242,16 @@ clk_enable(host->fclk); - OMAP_MMC_WRITE(host->base, CTO, 200); - OMAP_MMC_WRITE(host->base, ARGL, cmd->arg & 0xffff); - OMAP_MMC_WRITE(host->base, ARGH, cmd->arg >> 16); - OMAP_MMC_WRITE(host->base, IE, + OMAP_MMC_WRITE(host, CTO, 200); + OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff); + OMAP_MMC_WRITE(host, ARGH, cmd->arg >> 16); + OMAP_MMC_WRITE(host, IE, OMAP_MMC_STAT_A_EMPTY | OMAP_MMC_STAT_A_FULL | OMAP_MMC_STAT_CMD_CRC | OMAP_MMC_STAT_CMD_TOUT | OMAP_MMC_STAT_DATA_CRC | OMAP_MMC_STAT_DATA_TOUT | OMAP_MMC_STAT_END_OF_CMD | OMAP_MMC_STAT_CARD_ERR | OMAP_MMC_STAT_END_OF_DATA); - OMAP_MMC_WRITE(host->base, CMD, cmdreg); + OMAP_MMC_WRITE(host, CMD, cmdreg); } static void @@ -296,22 +347,22 @@ if (cmd->flags & MMC_RSP_136) { /* response type 2 */ cmd->resp[3] = - OMAP_MMC_READ(host->base, RSP0) | - (OMAP_MMC_READ(host->base, RSP1) << 16); + OMAP_MMC_READ(host, RSP0) | + (OMAP_MMC_READ(host, RSP1) << 16); cmd->resp[2] = - OMAP_MMC_READ(host->base, RSP2) | - (OMAP_MMC_READ(host->base, RSP3) << 16); + OMAP_MMC_READ(host, RSP2) | + (OMAP_MMC_READ(host, RSP3) << 16); cmd->resp[1] = - OMAP_MMC_READ(host->base, RSP4) | - (OMAP_MMC_READ(host->base, RSP5) << 16); + OMAP_MMC_READ(host, RSP4) | + (OMAP_MMC_READ(host, RSP5) << 16); cmd->resp[0] = - OMAP_MMC_READ(host->base, RSP6) | - (OMAP_MMC_READ(host->base, RSP7) << 16); + OMAP_MMC_READ(host, RSP6) | + (OMAP_MMC_READ(host, RSP7) << 16); } else { /* response types 1, 1b, 3, 4, 5, 6 */ cmd->resp[0] = - OMAP_MMC_READ(host->base, RSP6) | - (OMAP_MMC_READ(host->base, RSP7) << 16); + OMAP_MMC_READ(host, RSP6) | + (OMAP_MMC_READ(host, RSP7) << 16); } } @@ -354,9 +405,9 @@ host->data->bytes_xfered += n; if (write) { - __raw_writesw(host->base + OMAP_MMC_REG_DATA, host->buffer, n); + __raw_writesw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n); } else { - __raw_readsw(host->base + OMAP_MMC_REG_DATA, host->buffer, n); + __raw_readsw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n); } } @@ -386,11 +437,11 @@ int transfer_error; if (host->cmd == NULL && host->data == NULL) { - status = OMAP_MMC_READ(host->base, STAT); + status = OMAP_MMC_READ(host, STAT); dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status); if (status != 0) { - OMAP_MMC_WRITE(host->base, STAT, status); - OMAP_MMC_WRITE(host->base, IE, 0); + OMAP_MMC_WRITE(host, STAT, status); + OMAP_MMC_WRITE(host, IE, 0); } return IRQ_HANDLED; } @@ -399,8 +450,8 @@ end_transfer = 0; transfer_error = 0; - while ((status = OMAP_MMC_READ(host->base, STAT)) != 0) { - OMAP_MMC_WRITE(host->base, STAT, status); + while ((status = OMAP_MMC_READ(host, STAT)) != 0) { + OMAP_MMC_WRITE(host, STAT, status); #ifdef CONFIG_MMC_DEBUG dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ", status, host->cmd != NULL ? host->cmd->opcode : -1); @@ -470,8 +521,8 @@ if (status & OMAP_MMC_STAT_CARD_ERR) { if (host->cmd && host->cmd->opcode == MMC_STOP_TRANSMISSION) { - u32 response = OMAP_MMC_READ(host->base, RSP6) - | (OMAP_MMC_READ(host->base, RSP7) << 16); + u32 response = OMAP_MMC_READ(host, RSP6) + | (OMAP_MMC_READ(host, RSP7) << 16); /* STOP sometimes sets must-ignore bits */ if (!(response & (R1_CC_ERROR | R1_ILLEGAL_COMMAND @@ -581,11 +632,11 @@ int dst_port = 0; int sync_dev = 0; - data_addr = io_v2p((u32) host->base) + OMAP_MMC_REG_DATA; - frame = data->blksz; + data_addr = host->phys_base + OMAP_MMC_REG_DATA; + frame = 1 << data->blksz_bits; count = sg_dma_len(sg); - if ((data->blocks == 1) && (count > data->blksz)) + if ((data->blocks == 1) && (count > (1 << data->blksz_bits))) count = frame; host->dma_len = count; @@ -643,7 +694,7 @@ if (unlikely(count > 0xffff)) BUG(); - OMAP_MMC_WRITE(host->base, BUF, buf); + OMAP_MMC_WRITE(host, BUF, buf); omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S16, frame, count, OMAP_DMA_SYNC_FRAME, sync_dev, 0); @@ -728,11 +779,11 @@ { u16 reg; - reg = OMAP_MMC_READ(host->base, SDIO); + reg = OMAP_MMC_READ(host, SDIO); reg &= ~(1 << 5); - OMAP_MMC_WRITE(host->base, SDIO, reg); + OMAP_MMC_WRITE(host, SDIO, reg); /* Set maximum timeout */ - OMAP_MMC_WRITE(host->base, CTO, 0xff); + OMAP_MMC_WRITE(host, CTO, 0xff); } static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req) @@ -746,14 +797,14 @@ timeout = req->data->timeout_clks + req->data->timeout_ns / 500; /* Check if we need to use timeout multiplier register */ - reg = OMAP_MMC_READ(host->base, SDIO); + reg = OMAP_MMC_READ(host, SDIO); if (timeout > 0xffff) { reg |= (1 << 5); timeout /= 1024; } else reg &= ~(1 << 5); - OMAP_MMC_WRITE(host->base, SDIO, reg); - OMAP_MMC_WRITE(host->base, DTO, timeout); + OMAP_MMC_WRITE(host, SDIO, reg); + OMAP_MMC_WRITE(host, DTO, timeout); } static void @@ -765,19 +816,19 @@ host->data = data; if (data == NULL) { - OMAP_MMC_WRITE(host->base, BLEN, 0); - OMAP_MMC_WRITE(host->base, NBLK, 0); - OMAP_MMC_WRITE(host->base, BUF, 0); + OMAP_MMC_WRITE(host, BLEN, 0); + OMAP_MMC_WRITE(host, NBLK, 0); + OMAP_MMC_WRITE(host, BUF, 0); host->dma_in_use = 0; set_cmd_timeout(host, req); return; } - block_size = data->blksz; + block_size = 1 << data->blksz_bits; - OMAP_MMC_WRITE(host->base, NBLK, data->blocks - 1); - OMAP_MMC_WRITE(host->base, BLEN, block_size - 1); + OMAP_MMC_WRITE(host, NBLK, data->blocks - 1); + OMAP_MMC_WRITE(host, BLEN, block_size - 1); set_data_timeout(host, req); /* cope with calling layer confusion; it issues "single @@ -819,7 +870,7 @@ /* Revert to PIO? */ if (!use_dma) { - OMAP_MMC_WRITE(host->base, BUF, 0x1f1f); + OMAP_MMC_WRITE(host, BUF, 0x1f1f); host->total_bytes_left = data->blocks * block_size; host->sg_len = sg_len; mmc_omap_sg_to_buf(host); @@ -845,7 +896,6 @@ static void innovator_fpga_socket_power(int on) { #if defined(CONFIG_MACH_OMAP_INNOVATOR) && defined(CONFIG_ARCH_OMAP15XX) - if (on) { fpga_write(fpga_read(OMAP1510_FPGA_POWER) | (1 << 3), OMAP1510_FPGA_POWER); @@ -871,11 +921,12 @@ /* GPIO 4 of TPS65010 sends SD_EN signal */ tps65010_set_gpio_out_value(GPIO4, HIGH); else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host->base, CON); - OMAP_MMC_WRITE(host->base, CON, reg | (1 << 11)); + u16 reg = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, reg | (1 << 11)); } else if (host->power_pin >= 0) omap_set_gpio_dataout(host->power_pin, 1); + msleep(1); } else { if (machine_is_omap_innovator()) innovator_fpga_socket_power(0); @@ -884,8 +935,8 @@ else if (machine_is_omap_h3()) tps65010_set_gpio_out_value(GPIO4, LOW); else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host->base, CON); - OMAP_MMC_WRITE(host->base, CON, reg & ~(1 << 11)); + u16 reg = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, reg & ~(1 << 11)); } else if (host->power_pin >= 0) omap_set_gpio_dataout(host->power_pin, 0); @@ -895,30 +946,31 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct mmc_omap_host *host = mmc_priv(mmc); + int fclk_rate; int dsor; - int realclock, i; - - realclock = ios->clock; + int freq, i; - if (ios->clock == 0) - dsor = 0; - else { - int func_clk_rate = clk_get_rate(host->fclk); + freq = ios->clock; - dsor = func_clk_rate / realclock; - if (dsor < 1) - dsor = 1; + /* At least on OMAP2420, the divisor must be != 0 for the + * initialization sequence to complete successfully. */ + if (freq == 0) + freq = 4000000; - if (func_clk_rate / dsor > realclock) - dsor++; + fclk_rate = clk_get_rate(host->fclk); + dsor = fclk_rate / freq; + if (dsor < 1) + dsor = 1; - if (dsor > 250) - dsor = 250; + if (fclk_rate / dsor > freq) dsor++; - if (ios->bus_width == MMC_BUS_WIDTH_4) - dsor |= 1 << 15; - } + if (dsor > 250) + dsor = 250; + dsor++; + + if (ios->bus_width == MMC_BUS_WIDTH_4) + dsor |= 1 << 15; switch (ios->power_mode) { case MMC_POWER_OFF: @@ -927,7 +979,7 @@ case MMC_POWER_UP: case MMC_POWER_ON: mmc_omap_power(host, 1); - dsor |= 1<<11; + dsor |= 1 << 11; break; } @@ -941,14 +993,14 @@ * which results in the while loop below getting stuck. * Writing to the CON register twice seems to do the trick. */ for (i = 0; i < 2; i++) - OMAP_MMC_WRITE(host->base, CON, dsor); + OMAP_MMC_WRITE(host, CON, dsor); if (ios->power_mode == MMC_POWER_UP) { /* Send clock cycles, poll completion */ - OMAP_MMC_WRITE(host->base, IE, 0); - OMAP_MMC_WRITE(host->base, STAT, 0xffff); - OMAP_MMC_WRITE(host->base, CMD, 1<<7); - while (0 == (OMAP_MMC_READ(host->base, STAT) & 1)); - OMAP_MMC_WRITE(host->base, STAT, 1); + OMAP_MMC_WRITE(host, IE, 0); + OMAP_MMC_WRITE(host, STAT, 0xffff); + OMAP_MMC_WRITE(host, CMD, 1 << 7); + while ((OMAP_MMC_READ(host, STAT) & 1) == 0); + OMAP_MMC_WRITE(host, STAT, 1); } clk_disable(host->fclk); } @@ -971,25 +1023,29 @@ struct omap_mmc_conf *minfo = pdev->dev.platform_data; struct mmc_host *mmc; struct mmc_omap_host *host = NULL; - struct resource *r; + struct resource *res; int ret = 0; int irq; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (minfo == NULL) { + dev_err(&pdev->dev, "platform data missing\n"); + return -ENXIO; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - if (!r || irq < 0) + if (res == NULL || irq < 0) return -ENXIO; - r = request_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1, - pdev->name); - if (!r) + res = request_mem_region(res->start, res->end - res->start + 1, + pdev->name); + if (res == NULL) return -EBUSY; mmc = mmc_alloc_host(sizeof(struct mmc_omap_host), &pdev->dev); - if (!mmc) { + if (mmc == NULL) { ret = -ENOMEM; - goto out; + goto err_free_mem_region; } host = mmc_priv(mmc); @@ -997,17 +1053,18 @@ spin_lock_init(&host->dma_lock); init_timer(&host->dma_timer); + host->dma_timer.function = mmc_omap_dma_timer; host->dma_timer.data = (unsigned long) host; host->id = pdev->id; - host->res = r; + host->mem_res = res; host->irq = irq; if (cpu_is_omap24xx()) { host->iclk = clk_get(&pdev->dev, "mmc_ick"); if (IS_ERR(host->iclk)) - goto out; + goto err_free_mmc_host; clk_enable(host->iclk); } @@ -1015,10 +1072,9 @@ host->fclk = clk_get(&pdev->dev, "mmc_ck"); else host->fclk = clk_get(&pdev->dev, "mmc_fck"); - if (IS_ERR(host->fclk)) { ret = PTR_ERR(host->fclk); - goto out; + goto err_free_iclk; } /* REVISIT: @@ -1031,14 +1087,15 @@ host->use_dma = 1; host->dma_ch = -1; - host->irq = pdev->resource[1].start; - host->base = (void __iomem*)IO_ADDRESS(r->start); + host->irq = irq; + host->phys_base = host->mem_res->start; + host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base); mmc->ops = &mmc_omap_ops; mmc->f_min = 400000; mmc->f_max = 24000000; - mmc->ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34; - mmc->caps = MMC_CAP_BYTEBLOCK; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_CAP_MULTIWRITE + | MMC_CAP_BYTEBLOCK; if (minfo->wire4) mmc->caps |= MMC_CAP_4_BIT_DATA; @@ -1056,20 +1113,18 @@ if ((ret = omap_request_gpio(host->power_pin)) != 0) { dev_err(mmc_dev(host->mmc), "Unable to get GPIO pin for MMC power\n"); - goto out; + goto err_free_fclk; } omap_set_gpio_direction(host->power_pin, 0); } ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host); if (ret) - goto out; + goto err_free_power_gpio; host->dev = &pdev->dev; platform_set_drvdata(pdev, host); - mmc_add_host(mmc); - if (host->switch_pin >= 0) { INIT_WORK(&host->switch_work, mmc_omap_switch_handler, host); init_timer(&host->switch_timer); @@ -1083,7 +1138,7 @@ omap_set_gpio_direction(host->switch_pin, 1); ret = request_irq(OMAP_GPIO_IRQ(host->switch_pin), - mmc_omap_switch_irq, IRQF_TRIGGER_RISING, DRIVER_NAME, host); + mmc_omap_switch_irq, SA_TRIGGER_RISING, DRIVER_NAME, host); if (ret) { dev_warn(mmc_dev(host->mmc), "Unable to get IRQ for MMC cover switch\n"); omap_free_gpio(host->switch_pin); @@ -1107,10 +1162,11 @@ schedule_work(&host->switch_work); } -no_switch: + mmc_add_host(mmc); + return 0; -out: +no_switch: /* FIXME: Free other resources too. */ if (host) { if (host->iclk && !IS_ERR(host->iclk)) @@ -1119,6 +1175,21 @@ clk_put(host->fclk); mmc_free_host(host->mmc); } + +err_free_power_gpio: + if (host->power_pin >= 0) + omap_free_gpio(host->power_pin); +err_free_fclk: + clk_put(host->fclk); +err_free_iclk: + if (host->iclk != NULL) { + clk_disable(host->iclk); + clk_put(host->iclk); + } +err_free_mmc_host: + mmc_free_host(host->mmc); +err_free_mem_region: + release_mem_region(res->start, res->end - res->start + 1); return ret; } @@ -1128,30 +1199,31 @@ platform_set_drvdata(pdev, NULL); - if (host) { - mmc_remove_host(host->mmc); - free_irq(host->irq, host); + BUG_ON(host == NULL); - if (host->power_pin >= 0) - omap_free_gpio(host->power_pin); - if (host->switch_pin >= 0) { - device_remove_file(&pdev->dev, &dev_attr_enable_poll); - device_remove_file(&pdev->dev, &dev_attr_cover_switch); - free_irq(OMAP_GPIO_IRQ(host->switch_pin), host); - omap_free_gpio(host->switch_pin); - host->switch_pin = -1; - del_timer_sync(&host->switch_timer); - flush_scheduled_work(); - } - if (host->iclk && !IS_ERR(host->iclk)) - clk_put(host->iclk); - if (host->fclk && !IS_ERR(host->fclk)) - clk_put(host->fclk); - mmc_free_host(host->mmc); - } + mmc_remove_host(host->mmc); + free_irq(host->irq, host); + + if (host->power_pin >= 0) + omap_free_gpio(host->power_pin); + if (host->switch_pin >= 0) { + device_remove_file(&pdev->dev, &dev_attr_enable_poll); + device_remove_file(&pdev->dev, &dev_attr_cover_switch); + free_irq(OMAP_GPIO_IRQ(host->switch_pin), host); + omap_free_gpio(host->switch_pin); + host->switch_pin = -1; + del_timer_sync(&host->switch_timer); + flush_scheduled_work(); + } + if (host->iclk && !IS_ERR(host->iclk)) + clk_put(host->iclk); + if (host->fclk && !IS_ERR(host->fclk)) + clk_put(host->fclk); release_mem_region(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); + pdev->resource[0].end - pdev->resource[0].start + 1); + + mmc_free_host(host->mmc); return 0; }