diff options
Diffstat (limited to 'drivers/mmc/host')
29 files changed, 1803 insertions, 428 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index afe8c6fa166a..1a21c6427a19 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -225,7 +225,7 @@ config MMC_OMAP config MMC_OMAP_HS tristate "TI OMAP High Speed Multimedia Card Interface support" - depends on ARCH_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4 + depends on SOC_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4 help This selects the TI OMAP High Speed Multimedia card Interface. If you have an OMAP2430 or OMAP3 board or OMAP4 board with a @@ -311,7 +311,7 @@ config MMC_MSM config MMC_MXC tristate "Freescale i.MX2/3 Multimedia Card Interface support" - depends on ARCH_MXC + depends on MACH_MX21 || MACH_MX27 || ARCH_MX31 help This selects the Freescale i.MX2/3 Multimedia card Interface. If you have a i.MX platform with a Multimedia Card slot, @@ -319,6 +319,15 @@ config MMC_MXC If unsure, say N. +config MMC_MXS + tristate "Freescale MXS Multimedia Card Interface support" + depends on ARCH_MXS && MXS_DMA + help + This selects the Freescale SSP MMC controller found on MXS based + platforms like mx23/28. + + If unsure, say N. + config MMC_TIFM_SD tristate "TI Flash Media MMC/SD Interface support (EXPERIMENTAL)" depends on EXPERIMENTAL && PCI diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index e834fb223e9a..30aa6867745f 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_MMC_ARMMMCI) += mmci.o obj-$(CONFIG_MMC_PXA) += pxamci.o obj-$(CONFIG_MMC_IMX) += imxmmc.o obj-$(CONFIG_MMC_MXC) += mxcmmc.o +obj-$(CONFIG_MMC_MXS) += mxs-mmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o obj-$(CONFIG_MMC_SDHCI_PXA) += sdhci-pxa.o diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index ad2a7a032cdf..80bc9a5c25cc 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -578,7 +578,8 @@ static void atmci_dma_cleanup(struct atmel_mci *host) struct mmc_data *data = host->data; if (data) - dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len, + dma_unmap_sg(host->dma.chan->device->dev, + data->sg, data->sg_len, ((data->flags & MMC_DATA_WRITE) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)); } @@ -588,7 +589,7 @@ static void atmci_stop_dma(struct atmel_mci *host) struct dma_chan *chan = host->data_chan; if (chan) { - chan->device->device_control(chan, DMA_TERMINATE_ALL, 0); + dmaengine_terminate_all(chan); atmci_dma_cleanup(host); } else { /* Data transfer was stopped by the interrupt handler */ @@ -684,11 +685,11 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) else direction = DMA_TO_DEVICE; - sglen = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, direction); - if (sglen != data->sg_len) - goto unmap_exit; + sglen = dma_map_sg(chan->device->dev, data->sg, + data->sg_len, direction); + desc = chan->device->device_prep_slave_sg(chan, - data->sg, data->sg_len, direction, + data->sg, sglen, direction, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) goto unmap_exit; @@ -699,7 +700,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) return 0; unmap_exit: - dma_unmap_sg(&host->pdev->dev, data->sg, sglen, direction); + dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, direction); return -ENOMEM; } @@ -709,8 +710,8 @@ static void atmci_submit_data(struct atmel_mci *host) struct dma_async_tx_descriptor *desc = host->dma.data_desc; if (chan) { - desc->tx_submit(desc); - chan->device->device_issue_pending(chan); + dmaengine_submit(desc); + dma_async_issue_pending(chan); } } diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c index bac7d62866b7..0371bf502249 100644 --- a/drivers/mmc/host/bfin_sdh.c +++ b/drivers/mmc/host/bfin_sdh.c @@ -462,7 +462,7 @@ static int __devinit sdh_probe(struct platform_device *pdev) goto out; } - mmc = mmc_alloc_host(sizeof(*mmc), &pdev->dev); + mmc = mmc_alloc_host(sizeof(struct sdh_host), &pdev->dev); if (!mmc) { ret = -ENOMEM; goto out; diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c index 66b4ce587f4b..ce2a47b71dd6 100644 --- a/drivers/mmc/host/cb710-mmc.c +++ b/drivers/mmc/host/cb710-mmc.c @@ -205,7 +205,7 @@ static int cb710_wait_while_busy(struct cb710_slot *slot, uint8_t mask) "WAIT12: waited %d loops, mask %02X, entry val %08X, exit val %08X\n", limit, mask, e, x); #endif - return 0; + return err; } static void cb710_mmc_set_transfer_size(struct cb710_slot *slot, diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 2fcc82577c1b..5a614069cb00 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -32,6 +32,7 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/dw_mmc.h> #include <linux/bitops.h> +#include <linux/regulator/consumer.h> #include "dw_mmc.h" @@ -562,7 +563,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot) SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); /* enable clock */ - mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE); + mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE | + SDMMC_CLKEN_LOW_PWR); /* inform CIU */ mci_send_cmd(slot, @@ -661,6 +663,7 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq) static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct dw_mci_slot *slot = mmc_priv(mmc); + u32 regs; /* set default 1 bit mode */ slot->ctype = SDMMC_CTYPE_1BIT; @@ -672,6 +675,16 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) case MMC_BUS_WIDTH_4: slot->ctype = SDMMC_CTYPE_4BIT; break; + case MMC_BUS_WIDTH_8: + slot->ctype = SDMMC_CTYPE_8BIT; + break; + } + + /* DDR mode set */ + if (ios->ddr) { + regs = mci_readl(slot->host, UHS_REG); + regs |= (0x1 << slot->id) << 16; + mci_writel(slot->host, UHS_REG, regs); } if (ios->clock) { @@ -717,7 +730,9 @@ static int dw_mci_get_cd(struct mmc_host *mmc) struct dw_mci_board *brd = slot->host->pdata; /* Use platform get_cd function, else try onboard card detect */ - if (brd->get_cd) + if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION) + present = 1; + else if (brd->get_cd) present = !brd->get_cd(slot->id); else present = (mci_readl(slot->host, CDETECT) & (1 << slot->id)) @@ -1019,13 +1034,10 @@ static void dw_mci_read_data_pio(struct dw_mci *host) struct mmc_data *data = host->data; int shift = host->data_shift; u32 status; - unsigned int nbytes = 0, len, old_len, count = 0; + unsigned int nbytes = 0, len; do { len = SDMMC_GET_FCNT(mci_readl(host, STATUS)) << shift; - if (count == 0) - old_len = len; - if (offset + len <= sg->length) { host->pull_data(host, (void *)(buf + offset), len); @@ -1070,7 +1082,6 @@ static void dw_mci_read_data_pio(struct dw_mci *host) tasklet_schedule(&host->tasklet); return; } - count++; } while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/ len = SDMMC_GET_FCNT(mci_readl(host, STATUS)); host->pio_offset = offset; @@ -1395,7 +1406,11 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->setpower) host->pdata->setpower(id, 0); - mmc->caps = 0; + if (host->pdata->caps) + mmc->caps = host->pdata->caps; + else + mmc->caps = 0; + if (host->pdata->get_bus_wd) if (host->pdata->get_bus_wd(slot->id) >= 4) mmc->caps |= MMC_CAP_4_BIT_DATA; @@ -1426,6 +1441,13 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) } #endif /* CONFIG_MMC_DW_IDMAC */ + host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); + if (IS_ERR(host->vmmc)) { + printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc)); + host->vmmc = NULL; + } else + regulator_enable(host->vmmc); + if (dw_mci_get_cd(mmc)) set_bit(DW_MMC_CARD_PRESENT, &slot->flags); else @@ -1441,6 +1463,12 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) /* Card initially undetected */ slot->last_detect_state = 0; + /* + * Card may have been plugged in prior to boot so we + * need to run the detect tasklet + */ + tasklet_schedule(&host->card_tasklet); + return 0; } @@ -1619,8 +1647,9 @@ static int dw_mci_probe(struct platform_device *pdev) */ fifo_size = mci_readl(host, FIFOTH); fifo_size = (fifo_size >> 16) & 0x7ff; - mci_writel(host, FIFOTH, ((0x2 << 28) | ((fifo_size/2 - 1) << 16) | - ((fifo_size/2) << 0))); + host->fifoth_val = ((0x2 << 28) | ((fifo_size/2 - 1) << 16) | + ((fifo_size/2) << 0)); + mci_writel(host, FIFOTH, host->fifoth_val); /* disable clock to CIU */ mci_writel(host, CLKENA, 0); @@ -1683,6 +1712,12 @@ err_dmaunmap: host->sg_cpu, host->sg_dma); iounmap(host->regs); + if (host->vmmc) { + regulator_disable(host->vmmc); + regulator_put(host->vmmc); + } + + err_freehost: kfree(host); return ret; @@ -1714,6 +1749,11 @@ static int __exit dw_mci_remove(struct platform_device *pdev) if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); + if (host->vmmc) { + regulator_disable(host->vmmc); + regulator_put(host->vmmc); + } + iounmap(host->regs); kfree(host); @@ -1729,6 +1769,9 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg) int i, ret; struct dw_mci *host = platform_get_drvdata(pdev); + if (host->vmmc) + regulator_enable(host->vmmc); + for (i = 0; i < host->num_slots; i++) { struct dw_mci_slot *slot = host->slot[i]; if (!slot) @@ -1744,6 +1787,9 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg) } } + if (host->vmmc) + regulator_disable(host->vmmc); + return 0; } @@ -1752,6 +1798,23 @@ static int dw_mci_resume(struct platform_device *pdev) int i, ret; struct dw_mci *host = platform_get_drvdata(pdev); + if (host->dma_ops->init) + host->dma_ops->init(host); + + if (!mci_wait_reset(&pdev->dev, host)) { + ret = -ENODEV; + return ret; + } + + /* Restore the old value at FIFOTH register */ + mci_writel(host, FIFOTH, host->fifoth_val); + + mci_writel(host, RINTSTS, 0xFFFFFFFF); + mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | + SDMMC_INT_TXDR | SDMMC_INT_RXDR | + DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); + mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); + for (i = 0; i < host->num_slots; i++) { struct dw_mci_slot *slot = host->slot[i]; if (!slot) diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 5dd55a75233d..23c662af5616 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -43,6 +43,7 @@ #define SDMMC_USRID 0x068 #define SDMMC_VERID 0x06c #define SDMMC_HCON 0x070 +#define SDMMC_UHS_REG 0x074 #define SDMMC_BMOD 0x080 #define SDMMC_PLDMND 0x084 #define SDMMC_DBADDR 0x088 @@ -51,7 +52,6 @@ #define SDMMC_DSCADDR 0x094 #define SDMMC_BUFADDR 0x098 #define SDMMC_DATA 0x100 -#define SDMMC_DATA_ADR 0x100 /* shift bit field */ #define _SBF(f, v) ((v) << (f)) diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index b3a0ab0e4c2b..74218ad677e4 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -14,6 +14,7 @@ */ #include <linux/mmc/host.h> +#include <linux/err.h> #include <linux/io.h> #include <linux/irq.h> #include <linux/interrupt.h> @@ -827,8 +828,8 @@ static int __devinit jz4740_mmc_probe(struct platform_device* pdev) } host->clk = clk_get(&pdev->dev, "mmc"); - if (!host->clk) { - ret = -ENOENT; + if (IS_ERR(host->clk)) { + ret = PTR_ERR(host->clk); dev_err(&pdev->dev, "Failed to get mmc clock\n"); goto err_free_host; } diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index fd877f633dd2..2f7fc0c5146f 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1516,21 +1516,17 @@ static int __devexit mmc_spi_remove(struct spi_device *spi) return 0; } -#if defined(CONFIG_OF) static struct of_device_id mmc_spi_of_match_table[] __devinitdata = { { .compatible = "mmc-spi-slot", }, {}, }; -#endif static struct spi_driver mmc_spi_driver = { .driver = { .name = "mmc_spi", .bus = &spi_bus_type, .owner = THIS_MODULE, -#if defined(CONFIG_OF) .of_match_table = mmc_spi_of_match_table, -#endif }, .probe = mmc_spi_probe, .remove = __devexit_p(mmc_spi_remove), diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 563022825667..5bbb87d10251 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -2,7 +2,7 @@ * linux/drivers/mmc/host/mmci.c - ARM PrimeCell MMCI PL180/1 driver * * Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved. - * Copyright (C) 2010 ST-Ericsson AB. + * Copyright (C) 2010 ST-Ericsson SA * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -14,6 +14,7 @@ #include <linux/ioport.h> #include <linux/device.h> #include <linux/interrupt.h> +#include <linux/kernel.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/highmem.h> @@ -24,8 +25,10 @@ #include <linux/clk.h> #include <linux/scatterlist.h> #include <linux/gpio.h> -#include <linux/amba/mmci.h> #include <linux/regulator/consumer.h> +#include <linux/dmaengine.h> +#include <linux/dma-mapping.h> +#include <linux/amba/mmci.h> #include <asm/div64.h> #include <asm/io.h> @@ -46,10 +49,6 @@ static unsigned int fmax = 515633; * is asserted (likewise for RX) * @fifohalfsize: number of bytes that can be written when MCI_TXFIFOHALFEMPTY * is asserted (likewise for RX) - * @broken_blockend: the MCI_DATABLOCKEND is broken on the hardware - * and will not work at all. - * @broken_blockend_dma: the MCI_DATABLOCKEND is broken on the hardware when - * using DMA. * @sdio: variant supports SDIO * @st_clkdiv: true if using a ST-specific clock divider algorithm */ @@ -59,8 +58,6 @@ struct variant_data { unsigned int datalength_bits; unsigned int fifosize; unsigned int fifohalfsize; - bool broken_blockend; - bool broken_blockend_dma; bool sdio; bool st_clkdiv; }; @@ -76,7 +73,6 @@ static struct variant_data variant_u300 = { .fifohalfsize = 8 * 4, .clkreg_enable = 1 << 13, /* HWFCEN */ .datalength_bits = 16, - .broken_blockend_dma = true, .sdio = true, }; @@ -86,7 +82,6 @@ static struct variant_data variant_ux500 = { .clkreg = MCI_CLK_ENABLE, .clkreg_enable = 1 << 14, /* HWFCEN */ .datalength_bits = 24, - .broken_blockend = true, .sdio = true, .st_clkdiv = true, }; @@ -149,9 +144,6 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq) host->mrq = NULL; host->cmd = NULL; - if (mrq->data) - mrq->data->bytes_xfered = host->data_xfered; - /* * Need to drop the host lock here; mmc_request_done may call * back into the driver... @@ -196,6 +188,248 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data) sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); } +/* + * All the DMA operation mode stuff goes inside this ifdef. + * This assumes that you have a generic DMA device interface, + * no custom DMA interfaces are supported. + */ +#ifdef CONFIG_DMA_ENGINE +static void __devinit mmci_dma_setup(struct mmci_host *host) +{ + struct mmci_platform_data *plat = host->plat; + const char *rxname, *txname; + dma_cap_mask_t mask; + + if (!plat || !plat->dma_filter) { + dev_info(mmc_dev(host->mmc), "no DMA platform data\n"); + return; + } + + /* Try to acquire a generic DMA engine slave channel */ + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + /* + * If only an RX channel is specified, the driver will + * attempt to use it bidirectionally, however if it is + * is specified but cannot be located, DMA will be disabled. + */ + if (plat->dma_rx_param) { + host->dma_rx_channel = dma_request_channel(mask, + plat->dma_filter, + plat->dma_rx_param); + /* E.g if no DMA hardware is present */ + if (!host->dma_rx_channel) + dev_err(mmc_dev(host->mmc), "no RX DMA channel\n"); + } + + if (plat->dma_tx_param) { + host->dma_tx_channel = dma_request_channel(mask, + plat->dma_filter, + plat->dma_tx_param); + if (!host->dma_tx_channel) + dev_warn(mmc_dev(host->mmc), "no TX DMA channel\n"); + } else { + host->dma_tx_channel = host->dma_rx_channel; + } + + if (host->dma_rx_channel) + rxname = dma_chan_name(host->dma_rx_channel); + else + rxname = "none"; + + if (host->dma_tx_channel) + txname = dma_chan_name(host->dma_tx_channel); + else + txname = "none"; + + dev_info(mmc_dev(host->mmc), "DMA channels RX %s, TX %s\n", + rxname, txname); + + /* + * Limit the maximum segment size in any SG entry according to + * the parameters of the DMA engine device. + */ + if (host->dma_tx_channel) { + struct device *dev = host->dma_tx_channel->device->dev; + unsigned int max_seg_size = dma_get_max_seg_size(dev); + + if (max_seg_size < host->mmc->max_seg_size) + host->mmc->max_seg_size = max_seg_size; + } + if (host->dma_rx_channel) { + struct device *dev = host->dma_rx_channel->device->dev; + unsigned int max_seg_size = dma_get_max_seg_size(dev); + + if (max_seg_size < host->mmc->max_seg_size) + host->mmc->max_seg_size = max_seg_size; + } +} + +/* + * This is used in __devinit or __devexit so inline it + * so it can be discarded. + */ +static inline void mmci_dma_release(struct mmci_host *host) +{ + struct mmci_platform_data *plat = host->plat; + + if (host->dma_rx_channel) + dma_release_channel(host->dma_rx_channel); + if (host->dma_tx_channel && plat->dma_tx_param) + dma_release_channel(host->dma_tx_channel); + host->dma_rx_channel = host->dma_tx_channel = NULL; +} + +static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) +{ + struct dma_chan *chan = host->dma_current; + enum dma_data_direction dir; + u32 status; + int i; + + /* Wait up to 1ms for the DMA to complete */ + for (i = 0; ; i++) { + status = readl(host->base + MMCISTATUS); + if (!(status & MCI_RXDATAAVLBLMASK) || i >= 100) + break; + udelay(10); + } + + /* + * Check to see whether we still have some data left in the FIFO - + * this catches DMA controllers which are unable to monitor the + * DMALBREQ and DMALSREQ signals while allowing us to DMA to non- + * contiguous buffers. On TX, we'll get a FIFO underrun error. + */ + if (status & MCI_RXDATAAVLBLMASK) { + dmaengine_terminate_all(chan); + if (!data->error) + data->error = -EIO; + } + + if (data->flags & MMC_DATA_WRITE) { + dir = DMA_TO_DEVICE; + } else { + dir = DMA_FROM_DEVICE; + } + + dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir); + + /* + * Use of DMA with scatter-gather is impossible. + * Give up with DMA and switch back to PIO mode. + */ + if (status & MCI_RXDATAAVLBLMASK) { + dev_err(mmc_dev(host->mmc), "buggy DMA detected. Taking evasive action.\n"); + mmci_dma_release(host); + } +} + +static void mmci_dma_data_error(struct mmci_host *host) +{ + dev_err(mmc_dev(host->mmc), "error during DMA transfer!\n"); + dmaengine_terminate_all(host->dma_current); +} + +static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) +{ + struct variant_data *variant = host->variant; + struct dma_slave_config conf = { + .src_addr = host->phybase + MMCIFIFO, + .dst_addr = host->phybase + MMCIFIFO, + .src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, + .dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, + .src_maxburst = variant->fifohalfsize >> 2, /* # of words */ + .dst_maxburst = variant->fifohalfsize >> 2, /* # of words */ + }; + struct mmc_data *data = host->data; + struct dma_chan *chan; + struct dma_device *device; + struct dma_async_tx_descriptor *desc; + int nr_sg; + + host->dma_current = NULL; + + if (data->flags & MMC_DATA_READ) { + conf.direction = DMA_FROM_DEVICE; + chan = host->dma_rx_channel; + } else { + conf.direction = DMA_TO_DEVICE; + chan = host->dma_tx_channel; + } + + /* If there's no DMA channel, fall back to PIO */ + if (!chan) + return -EINVAL; + + /* If less than or equal to the fifo size, don't bother with DMA */ + if (host->size <= variant->fifosize) + return -EINVAL; + + device = chan->device; + nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, conf.direction); + if (nr_sg == 0) + return -EINVAL; + + dmaengine_slave_config(chan, &conf); + desc = device->device_prep_slave_sg(chan, data->sg, nr_sg, + conf.direction, DMA_CTRL_ACK); + if (!desc) + goto unmap_exit; + + /* Okay, go for it. */ + host->dma_current = chan; + + dev_vdbg(mmc_dev(host->mmc), + "Submit MMCI DMA job, sglen %d blksz %04x blks %04x flags %08x\n", + data->sg_len, data->blksz, data->blocks, data->flags); + dmaengine_submit(desc); + dma_async_issue_pending(chan); + + datactrl |= MCI_DPSM_DMAENABLE; + + /* Trigger the DMA transfer */ + writel(datactrl, host->base + MMCIDATACTRL); + + /* + * Let the MMCI say when the data is ended and it's time + * to fire next DMA request. When that happens, MMCI will + * call mmci_data_end() + */ + writel(readl(host->base + MMCIMASK0) | MCI_DATAENDMASK, + host->base + MMCIMASK0); + return 0; + +unmap_exit: + dmaengine_terminate_all(chan); + dma_unmap_sg(device->dev, data->sg, data->sg_len, conf.direction); + return -ENOMEM; +} +#else +/* Blank functions if the DMA engine is not available */ +static inline void mmci_dma_setup(struct mmci_host *host) +{ +} + +static inline void mmci_dma_release(struct mmci_host *host) +{ +} + +static inline void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data) +{ +} + +static inline void mmci_dma_data_error(struct mmci_host *host) +{ +} + +static inline int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) +{ + return -ENOSYS; +} +#endif + static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) { struct variant_data *variant = host->variant; @@ -209,11 +443,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) host->data = data; host->size = data->blksz * data->blocks; - host->data_xfered = 0; - host->blockend = false; - host->dataend = false; - - mmci_init_sg(host, data); + data->bytes_xfered = 0; clks = (unsigned long long)data->timeout_ns * host->cclk; do_div(clks, 1000000000UL); @@ -228,15 +458,29 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) BUG_ON(1 << blksz_bits != data->blksz); datactrl = MCI_DPSM_ENABLE | blksz_bits << 4; - if (data->flags & MMC_DATA_READ) { + + if (data->flags & MMC_DATA_READ) datactrl |= MCI_DPSM_DIRECTION; + + /* + * Attempt to use DMA operation mode, if this + * should fail, fall back to PIO mode + */ + if (!mmci_dma_start_data(host, datactrl)) + return; + + /* IRQ mode, map the SG list for CPU reading/writing */ + mmci_init_sg(host, data); + + if (data->flags & MMC_DATA_READ) { irqmask = MCI_RXFIFOHALFFULLMASK; /* - * If we have less than a FIFOSIZE of bytes to transfer, - * trigger a PIO interrupt as soon as any data is available. + * If we have less than the fifo 'half-full' threshold to + * transfer, trigger a PIO interrupt as soon as any data + * is available. */ - if (host->size < variant->fifosize) + if (host->size < variant->fifohalfsize) irqmask |= MCI_RXDATAAVLBLMASK; } else { /* @@ -288,95 +532,55 @@ static void mmci_data_irq(struct mmci_host *host, struct mmc_data *data, unsigned int status) { - struct variant_data *variant = host->variant; - /* First check for errors */ if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|MCI_RXOVERRUN)) { - dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ (status %08x)\n", status); - if (status & MCI_DATACRCFAIL) - data->error = -EILSEQ; - else if (status & MCI_DATATIMEOUT) - data->error = -ETIMEDOUT; - else if (status & (MCI_TXUNDERRUN|MCI_RXOVERRUN)) - data->error = -EIO; + u32 remain, success; - /* Force-complete the transaction */ - host->blockend = true; - host->dataend = true; + /* Terminate the DMA transfer */ + if (dma_inprogress(host)) + mmci_dma_data_error(host); /* - * We hit an error condition. Ensure that any data - * partially written to a page is properly coherent. + * Calculate how far we are into the transfer. Note that + * the data counter gives the number of bytes transferred + * on the MMC bus, not on the host side. On reads, this + * can be as much as a FIFO-worth of data ahead. This + * matters for FIFO overruns only. */ - if (data->flags & MMC_DATA_READ) { - struct sg_mapping_iter *sg_miter = &host->sg_miter; - unsigned long flags; - - local_irq_save(flags); - if (sg_miter_next(sg_miter)) { - flush_dcache_page(sg_miter->page); - sg_miter_stop(sg_miter); - } - local_irq_restore(flags); + remain = readl(host->base + MMCIDATACNT); + success = data->blksz * data->blocks - remain; + + dev_dbg(mmc_dev(host->mmc), "MCI ERROR IRQ, status 0x%08x at 0x%08x\n", + status, success); + if (status & MCI_DATACRCFAIL) { + /* Last block was not successful */ + success -= 1; + data->error = -EILSEQ; + } else if (status & MCI_DATATIMEOUT) { + data->error = -ETIMEDOUT; + } else if (status & MCI_TXUNDERRUN) { + data->error = -EIO; + } else if (status & MCI_RXOVERRUN) { + if (success > host->variant->fifosize) + success -= host->variant->fifosize; + else + success = 0; + data->error = -EIO; } + data->bytes_xfered = round_down(success, data->blksz); } - /* - * On ARM variants in PIO mode, MCI_DATABLOCKEND - * is always sent first, and we increase the - * transfered number of bytes for that IRQ. Then - * MCI_DATAEND follows and we conclude the transaction. - * - * On the Ux500 single-IRQ variant MCI_DATABLOCKEND - * doesn't seem to immediately clear from the status, - * so we can't use it keep count when only one irq is - * used because the irq will hit for other reasons, and - * then the flag is still up. So we use the MCI_DATAEND - * IRQ at the end of the entire transfer because - * MCI_DATABLOCKEND is broken. - * - * In the U300, the IRQs can arrive out-of-order, - * e.g. MCI_DATABLOCKEND sometimes arrives after MCI_DATAEND, - * so for this case we use the flags "blockend" and - * "dataend" to make sure both IRQs have arrived before - * concluding the transaction. (This does not apply - * to the Ux500 which doesn't fire MCI_DATABLOCKEND - * at all.) In DMA mode it suffers from the same problem - * as the Ux500. - */ - if (status & MCI_DATABLOCKEND) { - /* - * Just being a little over-cautious, we do not - * use this progressive update if the hardware blockend - * flag is unreliable: since it can stay high between - * IRQs it will corrupt the transfer counter. - */ - if (!variant->broken_blockend) - host->data_xfered += data->blksz; - host->blockend = true; - } + if (status & MCI_DATABLOCKEND) + dev_err(mmc_dev(host->mmc), "stray MCI_DATABLOCKEND interrupt\n"); - if (status & MCI_DATAEND) - host->dataend = true; - - /* - * On variants with broken blockend we shall only wait for dataend, - * on others we must sync with the blockend signal since they can - * appear out-of-order. - */ - if (host->dataend && (host->blockend || variant->broken_blockend)) { + if (status & MCI_DATAEND || data->error) { + if (dma_inprogress(host)) + mmci_dma_unmap(host, data); mmci_stop_data(host); - /* Reset these flags */ - host->blockend = false; - host->dataend = false; - - /* - * Variants with broken blockend flags need to handle the - * end of the entire transfer here. - */ - if (variant->broken_blockend && !data->error) - host->data_xfered += data->blksz * data->blocks; + if (!data->error) + /* The error clause is handled above, success! */ + data->bytes_xfered = data->blksz * data->blocks; if (!data->stop) { mmci_request_end(host, data->mrq); @@ -394,15 +598,15 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd, host->cmd = NULL; - cmd->resp[0] = readl(base + MMCIRESPONSE0); - cmd->resp[1] = readl(base + MMCIRESPONSE1); - cmd->resp[2] = readl(base + MMCIRESPONSE2); - cmd->resp[3] = readl(base + MMCIRESPONSE3); - if (status & MCI_CMDTIMEOUT) { cmd->error = -ETIMEDOUT; } else if (status & MCI_CMDCRCFAIL && cmd->flags & MMC_RSP_CRC) { cmd->error = -EILSEQ; + } else { + cmd->resp[0] = readl(base + MMCIRESPONSE0); + cmd->resp[1] = readl(base + MMCIRESPONSE1); + cmd->resp[2] = readl(base + MMCIRESPONSE2); + cmd->resp[3] = readl(base + MMCIRESPONSE3); } if (!cmd->data || cmd->error) { @@ -549,9 +753,6 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id) if (remain) break; - if (status & MCI_RXACTIVE) - flush_dcache_page(sg_miter->page); - status = readl(base + MMCISTATUS); } while (1); @@ -560,10 +761,10 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id) local_irq_restore(flags); /* - * If we're nearing the end of the read, switch to - * "any data available" mode. + * If we have less than the fifo 'half-full' threshold to transfer, + * trigger a PIO interrupt as soon as any data is available. */ - if (status & MCI_RXACTIVE && host->size < variant->fifosize) + if (status & MCI_RXACTIVE && host->size < variant->fifohalfsize) mmci_set_mask1(host, MCI_RXDATAAVLBLMASK); /* @@ -764,13 +965,13 @@ static const struct mmc_host_ops mmci_ops = { .get_cd = mmci_get_cd, }; -static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id) +static int __devinit mmci_probe(struct amba_device *dev, + const struct amba_id *id) { struct mmci_platform_data *plat = dev->dev.platform_data; struct variant_data *variant = id->data; struct mmci_host *host; struct mmc_host *mmc; - unsigned int mask; int ret; /* must have platform data */ @@ -828,6 +1029,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id) dev_dbg(mmc_dev(mmc), "eventual mclk rate: %u Hz\n", host->mclk); } + host->phybase = dev->res.start; host->base = ioremap(dev->res.start, resource_size(&dev->res)); if (!host->base) { ret = -ENOMEM; @@ -951,18 +1153,16 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id) goto irq0_free; } - mask = MCI_IRQENABLE; - /* Don't use the datablockend flag if it's broken */ - if (variant->broken_blockend) - mask &= ~MCI_DATABLOCKEND; - - writel(mask, host->base + MMCIMASK0); + writel(MCI_IRQENABLE, host->base + MMCIMASK0); amba_set_drvdata(dev, mmc); - dev_info(&dev->dev, "%s: PL%03x rev%u at 0x%08llx irq %d,%d\n", - mmc_hostname(mmc), amba_part(dev), amba_rev(dev), - (unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]); + dev_info(&dev->dev, "%s: PL%03x manf %x rev%u at 0x%08llx irq %d,%d (pio)\n", + mmc_hostname(mmc), amba_part(dev), amba_manf(dev), + amba_rev(dev), (unsigned long long)dev->res.start, + dev->irq[0], dev->irq[1]); + + mmci_dma_setup(host); mmc_add_host(mmc); @@ -1009,6 +1209,7 @@ static int __devexit mmci_remove(struct amba_device *dev) writel(0, host->base + MMCICOMMAND); writel(0, host->base + MMCIDATACTRL); + mmci_dma_release(host); free_irq(dev->irq[0], host); if (!host->singleirq) free_irq(dev->irq[1], host); diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index df06f01aac89..ec9a7bc6d0df 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -137,7 +137,7 @@ #define MCI_IRQENABLE \ (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ - MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATABLOCKENDMASK) + MCI_CMDRESPENDMASK|MCI_CMDSENTMASK) /* These interrupts are directed to IRQ1 when two IRQ lines are available */ #define MCI_IRQ1MASK \ @@ -148,8 +148,10 @@ struct clk; struct variant_data; +struct dma_chan; struct mmci_host { + phys_addr_t phybase; void __iomem *base; struct mmc_request *mrq; struct mmc_command *cmd; @@ -161,8 +163,6 @@ struct mmci_host { int gpio_cd_irq; bool singleirq; - unsigned int data_xfered; - spinlock_t lock; unsigned int mclk; @@ -177,12 +177,20 @@ struct mmci_host { struct timer_list timer; unsigned int oldstat; - bool blockend; - bool dataend; - /* pio stuff */ struct sg_mapping_iter sg_miter; unsigned int size; struct regulator *vcc; + +#ifdef CONFIG_DMA_ENGINE + /* DMA stuff */ + struct dma_chan *dma_current; + struct dma_chan *dma_rx_channel; + struct dma_chan *dma_tx_channel; + +#define dma_inprogress(host) ((host)->dma_current) +#else +#define dma_inprogress(host) (0) +#endif }; diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c index 5decfd0bd61d..a4c865a5286b 100644 --- a/drivers/mmc/host/msm_sdcc.c +++ b/drivers/mmc/host/msm_sdcc.c @@ -36,6 +36,7 @@ #include <linux/io.h> #include <linux/memory.h> #include <linux/gfp.h> +#include <linux/gpio.h> #include <asm/cacheflush.h> #include <asm/div64.h> @@ -266,14 +267,6 @@ msmsdcc_dma_complete_tlet(unsigned long data) dma_unmap_sg(mmc_dev(host->mmc), host->dma.sg, host->dma.num_ents, host->dma.dir); - if (host->curr.user_pages) { - struct scatterlist *sg = host->dma.sg; - int i; - - for (i = 0; i < host->dma.num_ents; i++) - flush_dcache_page(sg_page(sg++)); - } - host->dma.sg = NULL; host->dma.busy = 0; @@ -383,14 +376,30 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data) host->curr.user_pages = 0; box = &nc->cmd[0]; - for (i = 0; i < host->dma.num_ents; i++) { - box->cmd = CMD_MODE_BOX; - /* Initialize sg dma address */ - sg->dma_address = page_to_dma(mmc_dev(host->mmc), sg_page(sg)) - + sg->offset; + /* location of command block must be 64 bit aligned */ + BUG_ON(host->dma.cmd_busaddr & 0x07); + + nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP; + host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST | + DMOV_CMD_ADDR(host->dma.cmdptr_busaddr); + host->dma.hdr.complete_func = msmsdcc_dma_complete_func; - if (i == (host->dma.num_ents - 1)) + n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg, + host->dma.num_ents, host->dma.dir); + if (n == 0) { + printk(KERN_ERR "%s: Unable to map in all sg elements\n", + mmc_hostname(host->mmc)); + host->dma.sg = NULL; + host->dma.num_ents = 0; + return -ENOMEM; + } + + for_each_sg(host->dma.sg, sg, n, i) { + + box->cmd = CMD_MODE_BOX; + + if (i == n - 1) box->cmd |= CMD_LC; rows = (sg_dma_len(sg) % MCI_FIFOSIZE) ? (sg_dma_len(sg) / MCI_FIFOSIZE) + 1 : @@ -418,27 +427,6 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data) box->cmd |= CMD_DST_CRCI(crci); } box++; - sg++; - } - - /* location of command block must be 64 bit aligned */ - BUG_ON(host->dma.cmd_busaddr & 0x07); - - nc->cmdptr = (host->dma.cmd_busaddr >> 3) | CMD_PTR_LP; - host->dma.hdr.cmdptr = DMOV_CMD_PTR_LIST | - DMOV_CMD_ADDR(host->dma.cmdptr_busaddr); - host->dma.hdr.complete_func = msmsdcc_dma_complete_func; - - n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg, - host->dma.num_ents, host->dma.dir); -/* dsb inside dma_map_sg will write nc out to mem as well */ - - if (n != host->dma.num_ents) { - printk(KERN_ERR "%s: Unable to map in all sg elements\n", - mmc_hostname(host->mmc)); - host->dma.sg = NULL; - host->dma.num_ents = 0; - return -ENOMEM; } return 0; @@ -946,6 +934,38 @@ msmsdcc_request(struct mmc_host *mmc, struct mmc_request *mrq) spin_unlock_irqrestore(&host->lock, flags); } +static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable) +{ + struct msm_mmc_gpio_data *curr; + int i, rc = 0; + + if (!host->plat->gpio_data && host->gpio_config_status == enable) + return; + + curr = host->plat->gpio_data; + for (i = 0; i < curr->size; i++) { + if (enable) { + rc = gpio_request(curr->gpio[i].no, + curr->gpio[i].name); + if (rc) { + pr_err("%s: gpio_request(%d, %s) failed %d\n", + mmc_hostname(host->mmc), + curr->gpio[i].no, + curr->gpio[i].name, rc); + goto free_gpios; + } + } else { + gpio_free(curr->gpio[i].no); + } + } + host->gpio_config_status = enable; + return; + +free_gpios: + for (; i >= 0; i--) + gpio_free(curr->gpio[i].no); +} + static void msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { @@ -958,6 +978,8 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) msmsdcc_enable_clocks(host); + spin_unlock_irqrestore(&host->lock, flags); + if (ios->clock) { if (ios->clock != host->clk_rate) { rc = clk_set_rate(host->clk, ios->clock); @@ -984,9 +1006,11 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) switch (ios->power_mode) { case MMC_POWER_OFF: + msmsdcc_setup_gpio(host, false); break; case MMC_POWER_UP: pwr |= MCI_PWR_UP; + msmsdcc_setup_gpio(host, true); break; case MMC_POWER_ON: pwr |= MCI_PWR_ON; @@ -1003,9 +1027,10 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) msmsdcc_writel(host, pwr, MMCIPOWER); } #if BUSCLK_PWRSAVE + spin_lock_irqsave(&host->lock, flags); msmsdcc_disable_clocks(host, 1); -#endif spin_unlock_irqrestore(&host->lock, flags); +#endif } static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable) @@ -1331,9 +1356,6 @@ msmsdcc_probe(struct platform_device *pdev) if (host->timer.function) pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc)); -#if BUSCLK_PWRSAVE - msmsdcc_disable_clocks(host, 1); -#endif return 0; cmd_irq_free: free_irq(cmd_irqres->start, host); diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h index 939557af266d..42d7bbc977c5 100644 --- a/drivers/mmc/host/msm_sdcc.h +++ b/drivers/mmc/host/msm_sdcc.h @@ -243,6 +243,7 @@ struct msmsdcc_host { unsigned int cmd_datactrl; struct mmc_command *cmd_cmd; u32 cmd_c; + bool gpio_config_status; bool prog_scan; bool prog_enable; diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 4428594261c5..cc20e0259325 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -32,16 +32,14 @@ #include <linux/io.h> #include <linux/gpio.h> #include <linux/regulator/consumer.h> +#include <linux/dmaengine.h> #include <asm/dma.h> #include <asm/irq.h> #include <asm/sizes.h> #include <mach/mmc.h> -#ifdef CONFIG_ARCH_MX2 -#include <mach/dma-mx1-mx2.h> -#define HAS_DMA -#endif +#include <mach/dma.h> #define DRIVER_NAME "mxc-mmc" @@ -118,7 +116,8 @@ struct mxcmci_host { void __iomem *base; int irq; int detect_irq; - int dma; + struct dma_chan *dma; + struct dma_async_tx_descriptor *desc; int do_dma; int default_irq_mask; int use_sdio; @@ -129,7 +128,6 @@ struct mxcmci_host { struct mmc_command *cmd; struct mmc_data *data; - unsigned int dma_nents; unsigned int datasize; unsigned int dma_dir; @@ -144,6 +142,11 @@ struct mxcmci_host { spinlock_t lock; struct regulator *vcc; + + int burstlen; + int dmareq; + struct dma_slave_config dma_slave_config; + struct imx_dma_data dma_data; }; static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios); @@ -206,17 +209,16 @@ static void mxcmci_softreset(struct mxcmci_host *host) writew(0xff, host->base + MMC_REG_RES_TO); } +static int mxcmci_setup_dma(struct mmc_host *mmc); static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) { unsigned int nob = data->blocks; unsigned int blksz = data->blksz; unsigned int datasize = nob * blksz; -#ifdef HAS_DMA struct scatterlist *sg; - int i; - int ret; -#endif + int i, nents; + if (data->flags & MMC_DATA_STREAM) nob = 0xffff; @@ -227,7 +229,9 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) writew(blksz, host->base + MMC_REG_BLK_LEN); host->datasize = datasize; -#ifdef HAS_DMA + if (!mxcmci_use_dma(host)) + return 0; + for_each_sg(data->sg, sg, data->sg_len, i) { if (sg->offset & 3 || sg->length & 3) { host->do_dma = 0; @@ -235,34 +239,30 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) } } - if (data->flags & MMC_DATA_READ) { + if (data->flags & MMC_DATA_READ) host->dma_dir = DMA_FROM_DEVICE; - host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg, - data->sg_len, host->dma_dir); - - ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents, - datasize, - host->res->start + MMC_REG_BUFFER_ACCESS, - DMA_MODE_READ); - } else { + else host->dma_dir = DMA_TO_DEVICE; - host->dma_nents = dma_map_sg(mmc_dev(host->mmc), data->sg, - data->sg_len, host->dma_dir); - ret = imx_dma_setup_sg(host->dma, data->sg, host->dma_nents, - datasize, - host->res->start + MMC_REG_BUFFER_ACCESS, - DMA_MODE_WRITE); - } + nents = dma_map_sg(host->dma->device->dev, data->sg, + data->sg_len, host->dma_dir); + if (nents != data->sg_len) + return -EINVAL; + + host->desc = host->dma->device->device_prep_slave_sg(host->dma, + data->sg, data->sg_len, host->dma_dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - if (ret) { - dev_err(mmc_dev(host->mmc), "failed to setup DMA : %d\n", ret); - return ret; + if (!host->desc) { + dma_unmap_sg(host->dma->device->dev, data->sg, data->sg_len, + host->dma_dir); + host->do_dma = 0; + return 0; /* Fall back to PIO */ } wmb(); - imx_dma_enable(host->dma); -#endif /* HAS_DMA */ + dmaengine_submit(host->desc); + return 0; } @@ -337,13 +337,11 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat) struct mmc_data *data = host->data; int data_error; -#ifdef HAS_DMA if (mxcmci_use_dma(host)) { - imx_dma_disable(host->dma); - dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_nents, + dmaengine_terminate_all(host->dma); + dma_unmap_sg(host->dma->device->dev, data->sg, data->sg_len, host->dma_dir); } -#endif if (stat & STATUS_ERR_MASK) { dev_dbg(mmc_dev(host->mmc), "request failed. status: 0x%08x\n", @@ -545,7 +543,6 @@ static void mxcmci_datawork(struct work_struct *work) } } -#ifdef HAS_DMA static void mxcmci_data_done(struct mxcmci_host *host, unsigned int stat) { struct mmc_data *data = host->data; @@ -568,7 +565,6 @@ static void mxcmci_data_done(struct mxcmci_host *host, unsigned int stat) mxcmci_finish_request(host, host->req); } } -#endif /* HAS_DMA */ static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat) { @@ -606,12 +602,10 @@ static irqreturn_t mxcmci_irq(int irq, void *devid) sdio_irq = (stat & STATUS_SDIO_INT_ACTIVE) && host->use_sdio; spin_unlock_irqrestore(&host->lock, flags); -#ifdef HAS_DMA if (mxcmci_use_dma(host) && (stat & (STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE))) writel(STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE, host->base + MMC_REG_STATUS); -#endif if (sdio_irq) { writel(STATUS_SDIO_INT_ACTIVE, host->base + MMC_REG_STATUS); @@ -621,14 +615,14 @@ static irqreturn_t mxcmci_irq(int irq, void *devid) if (stat & STATUS_END_CMD_RESP) mxcmci_cmd_done(host, stat); -#ifdef HAS_DMA if (mxcmci_use_dma(host) && (stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE))) mxcmci_data_done(host, stat); -#endif + if (host->default_irq_mask && (stat & (STATUS_CARD_INSERTION | STATUS_CARD_REMOVAL))) mmc_detect_change(host->mmc, msecs_to_jiffies(200)); + return IRQ_HANDLED; } @@ -642,9 +636,10 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req) host->req = req; host->cmdat &= ~CMD_DAT_CONT_INIT; -#ifdef HAS_DMA - host->do_dma = 1; -#endif + + if (host->dma) + host->do_dma = 1; + if (req->data) { error = mxcmci_setup_data(host, req->data); if (error) { @@ -660,6 +655,7 @@ static void mxcmci_request(struct mmc_host *mmc, struct mmc_request *req) } error = mxcmci_start_cmd(host, req->cmd, cmdat); + out: if (error) mxcmci_finish_request(host, req); @@ -698,22 +694,46 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios) prescaler, divider, clk_in, clk_ios); } +static int mxcmci_setup_dma(struct mmc_host *mmc) +{ + struct mxcmci_host *host = mmc_priv(mmc); + struct dma_slave_config *config = &host->dma_slave_config; + + config->dst_addr = host->res->start + MMC_REG_BUFFER_ACCESS; + config->src_addr = host->res->start + MMC_REG_BUFFER_ACCESS; + config->dst_addr_width = 4; + config->src_addr_width = 4; + config->dst_maxburst = host->burstlen; + config->src_maxburst = host->burstlen; + + return dmaengine_slave_config(host->dma, config); +} + static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct mxcmci_host *host = mmc_priv(mmc); -#ifdef HAS_DMA - unsigned int blen; + int burstlen, ret; + /* * use burstlen of 64 in 4 bit mode (--> reg value 0) * use burstlen of 16 in 1 bit mode (--> reg value 16) */ if (ios->bus_width == MMC_BUS_WIDTH_4) - blen = 0; + burstlen = 64; else - blen = 16; + burstlen = 16; + + if (mxcmci_use_dma(host) && burstlen != host->burstlen) { + host->burstlen = burstlen; + ret = mxcmci_setup_dma(mmc); + if (ret) { + dev_err(mmc_dev(host->mmc), + "failed to config DMA channel. Falling back to PIO\n"); + dma_release_channel(host->dma); + host->do_dma = 0; + } + } - imx_dma_config_burstlen(host->dma, blen); -#endif if (ios->bus_width == MMC_BUS_WIDTH_4) host->cmdat |= CMD_DAT_CONT_BUS_WIDTH_4; else @@ -794,6 +814,18 @@ static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card) host->caps |= MMC_CAP_4_BIT_DATA; } +static bool filter(struct dma_chan *chan, void *param) +{ + struct mxcmci_host *host = param; + + if (!imx_dma_is_general_purpose(chan)) + return false; + + chan->private = &host->dma_data; + + return true; +} + static const struct mmc_host_ops mxcmci_ops = { .request = mxcmci_request, .set_ios = mxcmci_set_ios, @@ -808,6 +840,7 @@ static int mxcmci_probe(struct platform_device *pdev) struct mxcmci_host *host = NULL; struct resource *iores, *r; int ret = 0, irq; + dma_cap_mask_t mask; printk(KERN_INFO "i.MX SDHC driver\n"); @@ -883,29 +916,23 @@ static int mxcmci_probe(struct platform_device *pdev) writel(host->default_irq_mask, host->base + MMC_REG_INT_CNTR); -#ifdef HAS_DMA - host->dma = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_LOW); - if (host->dma < 0) { - dev_err(mmc_dev(host->mmc), "imx_dma_request_by_prio failed\n"); - ret = -EBUSY; - goto out_clk_put; - } - r = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (!r) { - ret = -EINVAL; - goto out_free_dma; + if (r) { + host->dmareq = r->start; + host->dma_data.peripheral_type = IMX_DMATYPE_SDHC; + host->dma_data.priority = DMA_PRIO_LOW; + host->dma_data.dma_request = host->dmareq; + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + host->dma = dma_request_channel(mask, filter, host); + if (host->dma) + mmc->max_seg_size = dma_get_max_seg_size( + host->dma->device->dev); } - ret = imx_dma_config_channel(host->dma, - IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_FIFO, - IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR, - r->start, 0); - if (ret) { - dev_err(mmc_dev(host->mmc), "failed to config DMA channel\n"); - goto out_free_dma; - } -#endif + if (!host->dma) + dev_info(mmc_dev(host->mmc), "dma not available. Using PIO\n"); + INIT_WORK(&host->datawork, mxcmci_datawork); ret = request_irq(host->irq, mxcmci_irq, 0, DRIVER_NAME, host); @@ -928,9 +955,8 @@ static int mxcmci_probe(struct platform_device *pdev) out_free_irq: free_irq(host->irq, host); out_free_dma: -#ifdef HAS_DMA - imx_dma_free(host->dma); -#endif + if (host->dma) + dma_release_channel(host->dma); out_clk_put: clk_disable(host->clk); clk_put(host->clk); @@ -960,9 +986,10 @@ static int mxcmci_remove(struct platform_device *pdev) free_irq(host->irq, host); iounmap(host->base); -#ifdef HAS_DMA - imx_dma_free(host->dma); -#endif + + if (host->dma) + dma_release_channel(host->dma); + clk_disable(host->clk); clk_put(host->clk); diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c new file mode 100644 index 000000000000..99d39a6a1032 --- /dev/null +++ b/drivers/mmc/host/mxs-mmc.c @@ -0,0 +1,874 @@ +/* + * Portions copyright (C) 2003 Russell King, PXA MMCI Driver + * Portions copyright (C) 2004-2005 Pierre Ossman, W83L51xD SD/MMC driver + * + * Copyright 2008 Embedded Alley Solutions, Inc. + * Copyright 2009-2011 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <linux/highmem.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/completion.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sdio.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> + +#include <mach/mxs.h> +#include <mach/common.h> +#include <mach/dma.h> +#include <mach/mmc.h> + +#define DRIVER_NAME "mxs-mmc" + +/* card detect polling timeout */ +#define MXS_MMC_DETECT_TIMEOUT (HZ/2) + +#define SSP_VERSION_LATEST 4 +#define ssp_is_old() (host->version < SSP_VERSION_LATEST) + +/* SSP registers */ +#define HW_SSP_CTRL0 0x000 +#define BM_SSP_CTRL0_RUN (1 << 29) +#define BM_SSP_CTRL0_SDIO_IRQ_CHECK (1 << 28) +#define BM_SSP_CTRL0_IGNORE_CRC (1 << 26) +#define BM_SSP_CTRL0_READ (1 << 25) +#define BM_SSP_CTRL0_DATA_XFER (1 << 24) +#define BP_SSP_CTRL0_BUS_WIDTH (22) +#define BM_SSP_CTRL0_BUS_WIDTH (0x3 << 22) +#define BM_SSP_CTRL0_WAIT_FOR_IRQ (1 << 21) +#define BM_SSP_CTRL0_LONG_RESP (1 << 19) +#define BM_SSP_CTRL0_GET_RESP (1 << 17) +#define BM_SSP_CTRL0_ENABLE (1 << 16) +#define BP_SSP_CTRL0_XFER_COUNT (0) +#define BM_SSP_CTRL0_XFER_COUNT (0xffff) +#define HW_SSP_CMD0 0x010 +#define BM_SSP_CMD0_DBL_DATA_RATE_EN (1 << 25) +#define BM_SSP_CMD0_SLOW_CLKING_EN (1 << 22) +#define BM_SSP_CMD0_CONT_CLKING_EN (1 << 21) +#define BM_SSP_CMD0_APPEND_8CYC (1 << 20) +#define BP_SSP_CMD0_BLOCK_SIZE (16) +#define BM_SSP_CMD0_BLOCK_SIZE (0xf << 16) +#define BP_SSP_CMD0_BLOCK_COUNT (8) +#define BM_SSP_CMD0_BLOCK_COUNT (0xff << 8) +#define BP_SSP_CMD0_CMD (0) +#define BM_SSP_CMD0_CMD (0xff) +#define HW_SSP_CMD1 0x020 +#define HW_SSP_XFER_SIZE 0x030 +#define HW_SSP_BLOCK_SIZE 0x040 +#define BP_SSP_BLOCK_SIZE_BLOCK_COUNT (4) +#define BM_SSP_BLOCK_SIZE_BLOCK_COUNT (0xffffff << 4) +#define BP_SSP_BLOCK_SIZE_BLOCK_SIZE (0) +#define BM_SSP_BLOCK_SIZE_BLOCK_SIZE (0xf) +#define HW_SSP_TIMING (ssp_is_old() ? 0x050 : 0x070) +#define BP_SSP_TIMING_TIMEOUT (16) +#define BM_SSP_TIMING_TIMEOUT (0xffff << 16) +#define BP_SSP_TIMING_CLOCK_DIVIDE (8) +#define BM_SSP_TIMING_CLOCK_DIVIDE (0xff << 8) +#define BP_SSP_TIMING_CLOCK_RATE (0) +#define BM_SSP_TIMING_CLOCK_RATE (0xff) +#define HW_SSP_CTRL1 (ssp_is_old() ? 0x060 : 0x080) +#define BM_SSP_CTRL1_SDIO_IRQ (1 << 31) +#define BM_SSP_CTRL1_SDIO_IRQ_EN (1 << 30) +#define BM_SSP_CTRL1_RESP_ERR_IRQ (1 << 29) +#define BM_SSP_CTRL1_RESP_ERR_IRQ_EN (1 << 28) +#define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ (1 << 27) +#define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN (1 << 26) +#define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ (1 << 25) +#define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN (1 << 24) +#define BM_SSP_CTRL1_DATA_CRC_IRQ (1 << 23) +#define BM_SSP_CTRL1_DATA_CRC_IRQ_EN (1 << 22) +#define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ (1 << 21) +#define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ_EN (1 << 20) +#define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ (1 << 17) +#define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN (1 << 16) +#define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ (1 << 15) +#define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ_EN (1 << 14) +#define BM_SSP_CTRL1_DMA_ENABLE (1 << 13) +#define BM_SSP_CTRL1_POLARITY (1 << 9) +#define BP_SSP_CTRL1_WORD_LENGTH (4) +#define BM_SSP_CTRL1_WORD_LENGTH (0xf << 4) +#define BP_SSP_CTRL1_SSP_MODE (0) +#define BM_SSP_CTRL1_SSP_MODE (0xf) +#define HW_SSP_SDRESP0 (ssp_is_old() ? 0x080 : 0x0a0) +#define HW_SSP_SDRESP1 (ssp_is_old() ? 0x090 : 0x0b0) +#define HW_SSP_SDRESP2 (ssp_is_old() ? 0x0a0 : 0x0c0) +#define HW_SSP_SDRESP3 (ssp_is_old() ? 0x0b0 : 0x0d0) +#define HW_SSP_STATUS (ssp_is_old() ? 0x0c0 : 0x100) +#define BM_SSP_STATUS_CARD_DETECT (1 << 28) +#define BM_SSP_STATUS_SDIO_IRQ (1 << 17) +#define HW_SSP_VERSION (cpu_is_mx23() ? 0x110 : 0x130) +#define BP_SSP_VERSION_MAJOR (24) + +#define BF_SSP(value, field) (((value) << BP_SSP_##field) & BM_SSP_##field) + +#define MXS_MMC_IRQ_BITS (BM_SSP_CTRL1_SDIO_IRQ | \ + BM_SSP_CTRL1_RESP_ERR_IRQ | \ + BM_SSP_CTRL1_RESP_TIMEOUT_IRQ | \ + BM_SSP_CTRL1_DATA_TIMEOUT_IRQ | \ + BM_SSP_CTRL1_DATA_CRC_IRQ | \ + BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ | \ + BM_SSP_CTRL1_RECV_TIMEOUT_IRQ | \ + BM_SSP_CTRL1_FIFO_OVERRUN_IRQ) + +#define SSP_PIO_NUM 3 + +struct mxs_mmc_host { + struct mmc_host *mmc; + struct mmc_request *mrq; + struct mmc_command *cmd; + struct mmc_data *data; + + void __iomem *base; + int irq; + struct resource *res; + struct resource *dma_res; + struct clk *clk; + unsigned int clk_rate; + + struct dma_chan *dmach; + struct mxs_dma_data dma_data; + unsigned int dma_dir; + u32 ssp_pio_words[SSP_PIO_NUM]; + + unsigned int version; + unsigned char bus_width; + spinlock_t lock; + int sdio_irq_en; +}; + +static int mxs_mmc_get_ro(struct mmc_host *mmc) +{ + struct mxs_mmc_host *host = mmc_priv(mmc); + struct mxs_mmc_platform_data *pdata = + mmc_dev(host->mmc)->platform_data; + + if (!pdata) + return -EFAULT; + + if (!gpio_is_valid(pdata->wp_gpio)) + return -EINVAL; + + return gpio_get_value(pdata->wp_gpio); +} + +static int mxs_mmc_get_cd(struct mmc_host *mmc) +{ + struct mxs_mmc_host *host = mmc_priv(mmc); + + return !(readl(host->base + HW_SSP_STATUS) & + BM_SSP_STATUS_CARD_DETECT); +} + +static void mxs_mmc_reset(struct mxs_mmc_host *host) +{ + u32 ctrl0, ctrl1; + + mxs_reset_block(host->base); + + ctrl0 = BM_SSP_CTRL0_IGNORE_CRC; + ctrl1 = BF_SSP(0x3, CTRL1_SSP_MODE) | + BF_SSP(0x7, CTRL1_WORD_LENGTH) | + BM_SSP_CTRL1_DMA_ENABLE | + BM_SSP_CTRL1_POLARITY | + BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN | + BM_SSP_CTRL1_DATA_CRC_IRQ_EN | + BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN | + BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN | + BM_SSP_CTRL1_RESP_ERR_IRQ_EN; + + writel(BF_SSP(0xffff, TIMING_TIMEOUT) | + BF_SSP(2, TIMING_CLOCK_DIVIDE) | + BF_SSP(0, TIMING_CLOCK_RATE), + host->base + HW_SSP_TIMING); + + if (host->sdio_irq_en) { + ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK; + ctrl1 |= BM_SSP_CTRL1_SDIO_IRQ_EN; + } + + writel(ctrl0, host->base + HW_SSP_CTRL0); + writel(ctrl1, host->base + HW_SSP_CTRL1); +} + +static void mxs_mmc_start_cmd(struct mxs_mmc_host *host, + struct mmc_command *cmd); + +static void mxs_mmc_request_done(struct mxs_mmc_host *host) +{ + struct mmc_command *cmd = host->cmd; + struct mmc_data *data = host->data; + struct mmc_request *mrq = host->mrq; + + if (mmc_resp_type(cmd) & MMC_RSP_PRESENT) { + if (mmc_resp_type(cmd) & MMC_RSP_136) { + cmd->resp[3] = readl(host->base + HW_SSP_SDRESP0); + cmd->resp[2] = readl(host->base + HW_SSP_SDRESP1); + cmd->resp[1] = readl(host->base + HW_SSP_SDRESP2); + cmd->resp[0] = readl(host->base + HW_SSP_SDRESP3); + } else { + cmd->resp[0] = readl(host->base + HW_SSP_SDRESP0); + } + } + + if (data) { + dma_unmap_sg(mmc_dev(host->mmc), data->sg, + data->sg_len, host->dma_dir); + /* + * If there was an error on any block, we mark all + * data blocks as being in error. + */ + if (!data->error) + data->bytes_xfered = data->blocks * data->blksz; + else + data->bytes_xfered = 0; + + host->data = NULL; + if (mrq->stop) { + mxs_mmc_start_cmd(host, mrq->stop); + return; + } + } + + host->mrq = NULL; + mmc_request_done(host->mmc, mrq); +} + +static void mxs_mmc_dma_irq_callback(void *param) +{ + struct mxs_mmc_host *host = param; + + mxs_mmc_request_done(host); +} + +static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id) +{ + struct mxs_mmc_host *host = dev_id; + struct mmc_command *cmd = host->cmd; + struct mmc_data *data = host->data; + u32 stat; + + spin_lock(&host->lock); + + stat = readl(host->base + HW_SSP_CTRL1); + writel(stat & MXS_MMC_IRQ_BITS, + host->base + HW_SSP_CTRL1 + MXS_CLR_ADDR); + + if ((stat & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN)) + mmc_signal_sdio_irq(host->mmc); + + spin_unlock(&host->lock); + + if (stat & BM_SSP_CTRL1_RESP_TIMEOUT_IRQ) + cmd->error = -ETIMEDOUT; + else if (stat & BM_SSP_CTRL1_RESP_ERR_IRQ) + cmd->error = -EIO; + + if (data) { + if (stat & (BM_SSP_CTRL1_DATA_TIMEOUT_IRQ | + BM_SSP_CTRL1_RECV_TIMEOUT_IRQ)) + data->error = -ETIMEDOUT; + else if (stat & BM_SSP_CTRL1_DATA_CRC_IRQ) + data->error = -EILSEQ; + else if (stat & (BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ | + BM_SSP_CTRL1_FIFO_OVERRUN_IRQ)) + data->error = -EIO; + } + + return IRQ_HANDLED; +} + +static struct dma_async_tx_descriptor *mxs_mmc_prep_dma( + struct mxs_mmc_host *host, unsigned int append) +{ + struct dma_async_tx_descriptor *desc; + struct mmc_data *data = host->data; + struct scatterlist * sgl; + unsigned int sg_len; + + if (data) { + /* data */ + dma_map_sg(mmc_dev(host->mmc), data->sg, + data->sg_len, host->dma_dir); + sgl = data->sg; + sg_len = data->sg_len; + } else { + /* pio */ + sgl = (struct scatterlist *) host->ssp_pio_words; + sg_len = SSP_PIO_NUM; + } + + desc = host->dmach->device->device_prep_slave_sg(host->dmach, + sgl, sg_len, host->dma_dir, append); + if (desc) { + desc->callback = mxs_mmc_dma_irq_callback; + desc->callback_param = host; + } else { + if (data) + dma_unmap_sg(mmc_dev(host->mmc), data->sg, + data->sg_len, host->dma_dir); + } + + return desc; +} + +static void mxs_mmc_bc(struct mxs_mmc_host *host) +{ + struct mmc_command *cmd = host->cmd; + struct dma_async_tx_descriptor *desc; + u32 ctrl0, cmd0, cmd1; + + ctrl0 = BM_SSP_CTRL0_ENABLE | BM_SSP_CTRL0_IGNORE_CRC; + cmd0 = BF_SSP(cmd->opcode, CMD0_CMD) | BM_SSP_CMD0_APPEND_8CYC; + cmd1 = cmd->arg; + + if (host->sdio_irq_en) { + ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK; + cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN; + } + + host->ssp_pio_words[0] = ctrl0; + host->ssp_pio_words[1] = cmd0; + host->ssp_pio_words[2] = cmd1; + host->dma_dir = DMA_NONE; + desc = mxs_mmc_prep_dma(host, 0); + if (!desc) + goto out; + + dmaengine_submit(desc); + return; + +out: + dev_warn(mmc_dev(host->mmc), + "%s: failed to prep dma\n", __func__); +} + +static void mxs_mmc_ac(struct mxs_mmc_host *host) +{ + struct mmc_command *cmd = host->cmd; + struct dma_async_tx_descriptor *desc; + u32 ignore_crc, get_resp, long_resp; + u32 ctrl0, cmd0, cmd1; + + ignore_crc = (mmc_resp_type(cmd) & MMC_RSP_CRC) ? + 0 : BM_SSP_CTRL0_IGNORE_CRC; + get_resp = (mmc_resp_type(cmd) & MMC_RSP_PRESENT) ? + BM_SSP_CTRL0_GET_RESP : 0; + long_resp = (mmc_resp_type(cmd) & MMC_RSP_136) ? + BM_SSP_CTRL0_LONG_RESP : 0; + + ctrl0 = BM_SSP_CTRL0_ENABLE | ignore_crc | get_resp | long_resp; + cmd0 = BF_SSP(cmd->opcode, CMD0_CMD); + cmd1 = cmd->arg; + + if (host->sdio_irq_en) { + ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK; + cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN; + } + + host->ssp_pio_words[0] = ctrl0; + host->ssp_pio_words[1] = cmd0; + host->ssp_pio_words[2] = cmd1; + host->dma_dir = DMA_NONE; + desc = mxs_mmc_prep_dma(host, 0); + if (!desc) + goto out; + + dmaengine_submit(desc); + return; + +out: + dev_warn(mmc_dev(host->mmc), + "%s: failed to prep dma\n", __func__); +} + +static unsigned short mxs_ns_to_ssp_ticks(unsigned clock_rate, unsigned ns) +{ + const unsigned int ssp_timeout_mul = 4096; + /* + * Calculate ticks in ms since ns are large numbers + * and might overflow + */ + const unsigned int clock_per_ms = clock_rate / 1000; + const unsigned int ms = ns / 1000; + const unsigned int ticks = ms * clock_per_ms; + const unsigned int ssp_ticks = ticks / ssp_timeout_mul; + + WARN_ON(ssp_ticks == 0); + return ssp_ticks; +} + +static void mxs_mmc_adtc(struct mxs_mmc_host *host) +{ + struct mmc_command *cmd = host->cmd; + struct mmc_data *data = cmd->data; + struct dma_async_tx_descriptor *desc; + struct scatterlist *sgl = data->sg, *sg; + unsigned int sg_len = data->sg_len; + int i; + + unsigned short dma_data_dir, timeout; + unsigned int data_size = 0, log2_blksz; + unsigned int blocks = data->blocks; + + u32 ignore_crc, get_resp, long_resp, read; + u32 ctrl0, cmd0, cmd1, val; + + ignore_crc = (mmc_resp_type(cmd) & MMC_RSP_CRC) ? + 0 : BM_SSP_CTRL0_IGNORE_CRC; + get_resp = (mmc_resp_type(cmd) & MMC_RSP_PRESENT) ? + BM_SSP_CTRL0_GET_RESP : 0; + long_resp = (mmc_resp_type(cmd) & MMC_RSP_136) ? + BM_SSP_CTRL0_LONG_RESP : 0; + + if (data->flags & MMC_DATA_WRITE) { + dma_data_dir = DMA_TO_DEVICE; + read = 0; + } else { + dma_data_dir = DMA_FROM_DEVICE; + read = BM_SSP_CTRL0_READ; + } + + ctrl0 = BF_SSP(host->bus_width, CTRL0_BUS_WIDTH) | + ignore_crc | get_resp | long_resp | + BM_SSP_CTRL0_DATA_XFER | read | + BM_SSP_CTRL0_WAIT_FOR_IRQ | + BM_SSP_CTRL0_ENABLE; + + cmd0 = BF_SSP(cmd->opcode, CMD0_CMD); + + /* get logarithm to base 2 of block size for setting register */ + log2_blksz = ilog2(data->blksz); + + /* + * take special care of the case that data size from data->sg + * is not equal to blocks x blksz + */ + for_each_sg(sgl, sg, sg_len, i) + data_size += sg->length; + + if (data_size != data->blocks * data->blksz) + blocks = 1; + + /* xfer count, block size and count need to be set differently */ + if (ssp_is_old()) { + ctrl0 |= BF_SSP(data_size, CTRL0_XFER_COUNT); + cmd0 |= BF_SSP(log2_blksz, CMD0_BLOCK_SIZE) | + BF_SSP(blocks - 1, CMD0_BLOCK_COUNT); + } else { + writel(data_size, host->base + HW_SSP_XFER_SIZE); + writel(BF_SSP(log2_blksz, BLOCK_SIZE_BLOCK_SIZE) | + BF_SSP(blocks - 1, BLOCK_SIZE_BLOCK_COUNT), + host->base + HW_SSP_BLOCK_SIZE); + } + + if ((cmd->opcode == MMC_STOP_TRANSMISSION) || + (cmd->opcode == SD_IO_RW_EXTENDED)) + cmd0 |= BM_SSP_CMD0_APPEND_8CYC; + + cmd1 = cmd->arg; + + if (host->sdio_irq_en) { + ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK; + cmd0 |= BM_SSP_CMD0_CONT_CLKING_EN | BM_SSP_CMD0_SLOW_CLKING_EN; + } + + /* set the timeout count */ + timeout = mxs_ns_to_ssp_ticks(host->clk_rate, data->timeout_ns); + val = readl(host->base + HW_SSP_TIMING); + val &= ~(BM_SSP_TIMING_TIMEOUT); + val |= BF_SSP(timeout, TIMING_TIMEOUT); + writel(val, host->base + HW_SSP_TIMING); + + /* pio */ + host->ssp_pio_words[0] = ctrl0; + host->ssp_pio_words[1] = cmd0; + host->ssp_pio_words[2] = cmd1; + host->dma_dir = DMA_NONE; + desc = mxs_mmc_prep_dma(host, 0); + if (!desc) + goto out; + + /* append data sg */ + WARN_ON(host->data != NULL); + host->data = data; + host->dma_dir = dma_data_dir; + desc = mxs_mmc_prep_dma(host, 1); + if (!desc) + goto out; + + dmaengine_submit(desc); + return; +out: + dev_warn(mmc_dev(host->mmc), + "%s: failed to prep dma\n", __func__); +} + +static void mxs_mmc_start_cmd(struct mxs_mmc_host *host, + struct mmc_command *cmd) +{ + host->cmd = cmd; + + switch (mmc_cmd_type(cmd)) { + case MMC_CMD_BC: + mxs_mmc_bc(host); + break; + case MMC_CMD_BCR: + mxs_mmc_ac(host); + break; + case MMC_CMD_AC: + mxs_mmc_ac(host); + break; + case MMC_CMD_ADTC: + mxs_mmc_adtc(host); + break; + default: + dev_warn(mmc_dev(host->mmc), + "%s: unknown MMC command\n", __func__); + break; + } +} + +static void mxs_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct mxs_mmc_host *host = mmc_priv(mmc); + + WARN_ON(host->mrq != NULL); + host->mrq = mrq; + mxs_mmc_start_cmd(host, mrq->cmd); +} + +static void mxs_mmc_set_clk_rate(struct mxs_mmc_host *host, unsigned int rate) +{ + unsigned int ssp_rate, bit_rate; + u32 div1, div2; + u32 val; + + ssp_rate = clk_get_rate(host->clk); + + for (div1 = 2; div1 < 254; div1 += 2) { + div2 = ssp_rate / rate / div1; + if (div2 < 0x100) + break; + } + + if (div1 >= 254) { + dev_err(mmc_dev(host->mmc), + "%s: cannot set clock to %d\n", __func__, rate); + return; + } + + if (div2 == 0) + bit_rate = ssp_rate / div1; + else + bit_rate = ssp_rate / div1 / div2; + + val = readl(host->base + HW_SSP_TIMING); + val &= ~(BM_SSP_TIMING_CLOCK_DIVIDE | BM_SSP_TIMING_CLOCK_RATE); + val |= BF_SSP(div1, TIMING_CLOCK_DIVIDE); + val |= BF_SSP(div2 - 1, TIMING_CLOCK_RATE); + writel(val, host->base + HW_SSP_TIMING); + + host->clk_rate = bit_rate; + + dev_dbg(mmc_dev(host->mmc), + "%s: div1 %d, div2 %d, ssp %d, bit %d, rate %d\n", + __func__, div1, div2, ssp_rate, bit_rate, rate); +} + +static void mxs_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct mxs_mmc_host *host = mmc_priv(mmc); + + if (ios->bus_width == MMC_BUS_WIDTH_8) + host->bus_width = 2; + else if (ios->bus_width == MMC_BUS_WIDTH_4) + host->bus_width = 1; + else + host->bus_width = 0; + + if (ios->clock) + mxs_mmc_set_clk_rate(host, ios->clock); +} + +static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) +{ + struct mxs_mmc_host *host = mmc_priv(mmc); + unsigned long flags; + + spin_lock_irqsave(&host->lock, flags); + + host->sdio_irq_en = enable; + + if (enable) { + writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK, + host->base + HW_SSP_CTRL0 + MXS_SET_ADDR); + writel(BM_SSP_CTRL1_SDIO_IRQ_EN, + host->base + HW_SSP_CTRL1 + MXS_SET_ADDR); + + if (readl(host->base + HW_SSP_STATUS) & BM_SSP_STATUS_SDIO_IRQ) + mmc_signal_sdio_irq(host->mmc); + + } else { + writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK, + host->base + HW_SSP_CTRL0 + MXS_CLR_ADDR); + writel(BM_SSP_CTRL1_SDIO_IRQ_EN, + host->base + HW_SSP_CTRL1 + MXS_CLR_ADDR); + } + + spin_unlock_irqrestore(&host->lock, flags); +} + +static const struct mmc_host_ops mxs_mmc_ops = { + .request = mxs_mmc_request, + .get_ro = mxs_mmc_get_ro, + .get_cd = mxs_mmc_get_cd, + .set_ios = mxs_mmc_set_ios, + .enable_sdio_irq = mxs_mmc_enable_sdio_irq, +}; + +static bool mxs_mmc_dma_filter(struct dma_chan *chan, void *param) +{ + struct mxs_mmc_host *host = param; + + if (!mxs_dma_is_apbh(chan)) + return false; + + if (chan->chan_id != host->dma_res->start) + return false; + + chan->private = &host->dma_data; + + return true; +} + +static int mxs_mmc_probe(struct platform_device *pdev) +{ + struct mxs_mmc_host *host; + struct mmc_host *mmc; + struct resource *iores, *dmares, *r; + struct mxs_mmc_platform_data *pdata; + int ret = 0, irq_err, irq_dma; + dma_cap_mask_t mask; + + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); + irq_err = platform_get_irq(pdev, 0); + irq_dma = platform_get_irq(pdev, 1); + if (!iores || !dmares || irq_err < 0 || irq_dma < 0) + return -EINVAL; + + r = request_mem_region(iores->start, resource_size(iores), pdev->name); + if (!r) + return -EBUSY; + + mmc = mmc_alloc_host(sizeof(struct mxs_mmc_host), &pdev->dev); + if (!mmc) { + ret = -ENOMEM; + goto out_release_mem; + } + + host = mmc_priv(mmc); + host->base = ioremap(r->start, resource_size(r)); + if (!host->base) { + ret = -ENOMEM; + goto out_mmc_free; + } + + /* only major verion does matter */ + host->version = readl(host->base + HW_SSP_VERSION) >> + BP_SSP_VERSION_MAJOR; + + host->mmc = mmc; + host->res = r; + host->dma_res = dmares; + host->irq = irq_err; + host->sdio_irq_en = 0; + + host->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(host->clk)) { + ret = PTR_ERR(host->clk); + goto out_iounmap; + } + clk_enable(host->clk); + + mxs_mmc_reset(host); + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + host->dma_data.chan_irq = irq_dma; + host->dmach = dma_request_channel(mask, mxs_mmc_dma_filter, host); + if (!host->dmach) { + dev_err(mmc_dev(host->mmc), + "%s: failed to request dma\n", __func__); + goto out_clk_put; + } + + /* set mmc core parameters */ + mmc->ops = &mxs_mmc_ops; + mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED | + MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL; + + pdata = mmc_dev(host->mmc)->platform_data; + if (pdata) { + if (pdata->flags & SLOTF_8_BIT_CAPABLE) + mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; + if (pdata->flags & SLOTF_4_BIT_CAPABLE) + mmc->caps |= MMC_CAP_4_BIT_DATA; + } + + mmc->f_min = 400000; + mmc->f_max = 288000000; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + + mmc->max_segs = 52; + mmc->max_blk_size = 1 << 0xf; + mmc->max_blk_count = (ssp_is_old()) ? 0xff : 0xffffff; + mmc->max_req_size = (ssp_is_old()) ? 0xffff : 0xffffffff; + mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev); + + platform_set_drvdata(pdev, mmc); + + ret = request_irq(host->irq, mxs_mmc_irq_handler, 0, DRIVER_NAME, host); + if (ret) + goto out_free_dma; + + spin_lock_init(&host->lock); + + ret = mmc_add_host(mmc); + if (ret) + goto out_free_irq; + + dev_info(mmc_dev(host->mmc), "initialized\n"); + + return 0; + +out_free_irq: + free_irq(host->irq, host); +out_free_dma: + if (host->dmach) + dma_release_channel(host->dmach); +out_clk_put: + clk_disable(host->clk); + clk_put(host->clk); +out_iounmap: + iounmap(host->base); +out_mmc_free: + mmc_free_host(mmc); +out_release_mem: + release_mem_region(iores->start, resource_size(iores)); + return ret; +} + +static int mxs_mmc_remove(struct platform_device *pdev) +{ + struct mmc_host *mmc = platform_get_drvdata(pdev); + struct mxs_mmc_host *host = mmc_priv(mmc); + struct resource *res = host->res; + + mmc_remove_host(mmc); + + free_irq(host->irq, host); + + platform_set_drvdata(pdev, NULL); + + if (host->dmach) + dma_release_channel(host->dmach); + + clk_disable(host->clk); + clk_put(host->clk); + + iounmap(host->base); + + mmc_free_host(mmc); + + release_mem_region(res->start, resource_size(res)); + + return 0; +} + +#ifdef CONFIG_PM +static int mxs_mmc_suspend(struct device *dev) +{ + struct mmc_host *mmc = dev_get_drvdata(dev); + struct mxs_mmc_host *host = mmc_priv(mmc); + int ret = 0; + + ret = mmc_suspend_host(mmc); + + clk_disable(host->clk); + + return ret; +} + +static int mxs_mmc_resume(struct device *dev) +{ + struct mmc_host *mmc = dev_get_drvdata(dev); + struct mxs_mmc_host *host = mmc_priv(mmc); + int ret = 0; + + clk_enable(host->clk); + + ret = mmc_resume_host(mmc); + + return ret; +} + +static const struct dev_pm_ops mxs_mmc_pm_ops = { + .suspend = mxs_mmc_suspend, + .resume = mxs_mmc_resume, +}; +#endif + +static struct platform_driver mxs_mmc_driver = { + .probe = mxs_mmc_probe, + .remove = mxs_mmc_remove, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &mxs_mmc_pm_ops, +#endif + }, +}; + +static int __init mxs_mmc_init(void) +{ + return platform_driver_register(&mxs_mmc_driver); +} + +static void __exit mxs_mmc_exit(void) +{ + platform_driver_unregister(&mxs_mmc_driver); +} + +module_init(mxs_mmc_init); +module_exit(mxs_mmc_exit); + +MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral"); +MODULE_AUTHOR("Freescale Semiconductor"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index 1247e5de9faa..5530def54e5b 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -34,6 +34,7 @@ enum { struct of_mmc_spi { int gpios[NUM_GPIOS]; bool alow_gpios[NUM_GPIOS]; + int detect_irq; struct mmc_spi_platform_data pdata; }; @@ -61,6 +62,22 @@ static int of_mmc_spi_get_ro(struct device *dev) return of_mmc_spi_read_gpio(dev, WP_GPIO); } +static int of_mmc_spi_init(struct device *dev, + irqreturn_t (*irqhandler)(int, void *), void *mmc) +{ + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + + return request_threaded_irq(oms->detect_irq, NULL, irqhandler, 0, + dev_name(dev), mmc); +} + +static void of_mmc_spi_exit(struct device *dev, void *mmc) +{ + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + + free_irq(oms->detect_irq, mmc); +} + struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) { struct device *dev = &spi->dev; @@ -121,8 +138,13 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) if (gpio_is_valid(oms->gpios[WP_GPIO])) oms->pdata.get_ro = of_mmc_spi_get_ro; - /* We don't support interrupts yet, let's poll. */ - oms->pdata.caps |= MMC_CAP_NEEDS_POLL; + oms->detect_irq = irq_of_parse_and_map(np, 0); + if (oms->detect_irq != NO_IRQ) { + oms->pdata.init = of_mmc_spi_init; + oms->pdata.exit = of_mmc_spi_exit; + } else { + oms->pdata.caps |= MMC_CAP_NEEDS_POLL; + } dev->platform_data = &oms->pdata; return dev->platform_data; diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 379d2ffe4c87..2e032f0e8cf4 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -1417,7 +1417,7 @@ static int __init mmc_omap_probe(struct platform_device *pdev) if (res == NULL || irq < 0) return -ENXIO; - res = request_mem_region(res->start, res->end - res->start + 1, + res = request_mem_region(res->start, resource_size(res), pdev->name); if (res == NULL) return -EBUSY; @@ -1457,7 +1457,7 @@ static int __init mmc_omap_probe(struct platform_device *pdev) host->irq = irq; host->phys_base = host->mem_res->start; - host->virt_base = ioremap(res->start, res->end - res->start + 1); + host->virt_base = ioremap(res->start, resource_size(res)); if (!host->virt_base) goto err_ioremap; @@ -1514,7 +1514,7 @@ err_free_mmc_host: err_ioremap: kfree(host); err_free_mem_region: - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); return ret; } diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 078fdf11af03..259ece047afc 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -118,7 +118,7 @@ #define MMC_TIMEOUT_MS 20 #define OMAP_MMC_MASTER_CLOCK 96000000 -#define DRIVER_NAME "mmci-omap-hs" +#define DRIVER_NAME "omap_hsmmc" /* Timeouts for entering power saving states on inactivity, msec */ #define OMAP_MMC_DISABLED_TIMEOUT 100 @@ -260,7 +260,7 @@ static int omap_hsmmc_1_set_power(struct device *dev, int slot, int power_on, return ret; } -static int omap_hsmmc_23_set_power(struct device *dev, int slot, int power_on, +static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on, int vdd) { struct omap_hsmmc_host *host = @@ -316,6 +316,12 @@ static int omap_hsmmc_23_set_power(struct device *dev, int slot, int power_on, return ret; } +static int omap_hsmmc_4_set_power(struct device *dev, int slot, int power_on, + int vdd) +{ + return 0; +} + static int omap_hsmmc_1_set_sleep(struct device *dev, int slot, int sleep, int vdd, int cardsleep) { @@ -326,7 +332,7 @@ static int omap_hsmmc_1_set_sleep(struct device *dev, int slot, int sleep, return regulator_set_mode(host->vcc, mode); } -static int omap_hsmmc_23_set_sleep(struct device *dev, int slot, int sleep, +static int omap_hsmmc_235_set_sleep(struct device *dev, int slot, int sleep, int vdd, int cardsleep) { struct omap_hsmmc_host *host = @@ -365,6 +371,12 @@ static int omap_hsmmc_23_set_sleep(struct device *dev, int slot, int sleep, return regulator_enable(host->vcc_aux); } +static int omap_hsmmc_4_set_sleep(struct device *dev, int slot, int sleep, + int vdd, int cardsleep) +{ + return 0; +} + static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) { struct regulator *reg; @@ -379,10 +391,14 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) break; case OMAP_MMC2_DEVID: case OMAP_MMC3_DEVID: + case OMAP_MMC5_DEVID: /* Off-chip level shifting, or none */ - mmc_slot(host).set_power = omap_hsmmc_23_set_power; - mmc_slot(host).set_sleep = omap_hsmmc_23_set_sleep; + mmc_slot(host).set_power = omap_hsmmc_235_set_power; + mmc_slot(host).set_sleep = omap_hsmmc_235_set_sleep; break; + case OMAP_MMC4_DEVID: + mmc_slot(host).set_power = omap_hsmmc_4_set_power; + mmc_slot(host).set_sleep = omap_hsmmc_4_set_sleep; default: pr_err("MMC%d configuration not supported!\n", host->id); return -EINVAL; @@ -1555,7 +1571,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) break; } - if (host->id == OMAP_MMC1_DEVID) { + if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { /* Only MMC1 can interface at 3V without some flavor * of external transceiver; but they all handle 1.8V. */ @@ -1647,7 +1663,7 @@ static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host) u32 hctl, capa, value; /* Only MMC1 supports 3.0V */ - if (host->id == OMAP_MMC1_DEVID) { + if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { hctl = SDVS30; capa = VS30 | VS18; } else { @@ -2031,8 +2047,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) res->start += pdata->reg_offset; res->end += pdata->reg_offset; - res = request_mem_region(res->start, res->end - res->start + 1, - pdev->name); + res = request_mem_region(res->start, resource_size(res), pdev->name); if (res == NULL) return -EBUSY; @@ -2101,14 +2116,14 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) /* we start off in DISABLED state */ host->dpm_state = DISABLED; - if (mmc_host_enable(host->mmc) != 0) { + if (clk_enable(host->iclk) != 0) { clk_put(host->iclk); clk_put(host->fclk); goto err1; } - if (clk_enable(host->iclk) != 0) { - mmc_host_disable(host->mmc); + if (mmc_host_enable(host->mmc) != 0) { + clk_disable(host->iclk); clk_put(host->iclk); clk_put(host->fclk); goto err1; @@ -2271,7 +2286,7 @@ err1: err_alloc: omap_hsmmc_gpio_free(pdata); err: - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); return ret; } @@ -2308,7 +2323,7 @@ static int omap_hsmmc_remove(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res) - release_mem_region(res->start, res->end - res->start + 1); + release_mem_region(res->start, resource_size(res)); platform_set_drvdata(pdev, NULL); return 0; diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 9b82910b9dbb..3b5248567973 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -15,9 +15,11 @@ #include <linux/delay.h> #include <linux/err.h> #include <linux/clk.h> +#include <linux/gpio.h> #include <linux/mmc/host.h> #include <linux/mmc/sdhci-pltfm.h> #include <mach/hardware.h> +#include <mach/esdhc.h> #include "sdhci.h" #include "sdhci-pltfm.h" #include "sdhci-esdhc.h" @@ -30,6 +32,39 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i writel(((readl(base) & ~(mask << shift)) | (val << shift)), base); } +static u32 esdhc_readl_le(struct sdhci_host *host, int reg) +{ + /* fake CARD_PRESENT flag on mx25/35 */ + u32 val = readl(host->ioaddr + reg); + + if (unlikely(reg == SDHCI_PRESENT_STATE)) { + struct esdhc_platform_data *boarddata = + host->mmc->parent->platform_data; + + if (boarddata && gpio_is_valid(boarddata->cd_gpio) + && gpio_get_value(boarddata->cd_gpio)) + /* no card, if a valid gpio says so... */ + val &= SDHCI_CARD_PRESENT; + else + /* ... in all other cases assume card is present */ + val |= SDHCI_CARD_PRESENT; + } + + return val; +} + +static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg) +{ + if (unlikely(reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)) + /* + * these interrupts won't work with a custom card_detect gpio + * (only applied to mx25/35) + */ + val &= ~(SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT); + + writel(val, host->ioaddr + reg); +} + static u16 esdhc_readw_le(struct sdhci_host *host, int reg) { if (unlikely(reg == SDHCI_HOST_VERSION)) @@ -100,10 +135,39 @@ static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) return clk_get_rate(pltfm_host->clk) / 256 / 16; } +static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) +{ + struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data; + + if (boarddata && gpio_is_valid(boarddata->wp_gpio)) + return gpio_get_value(boarddata->wp_gpio); + else + return -ENOSYS; +} + +static struct sdhci_ops sdhci_esdhc_ops = { + .read_w = esdhc_readw_le, + .write_w = esdhc_writew_le, + .write_b = esdhc_writeb_le, + .set_clock = esdhc_set_clock, + .get_max_clock = esdhc_pltfm_get_max_clock, + .get_min_clock = esdhc_pltfm_get_min_clock, +}; + +static irqreturn_t cd_irq(int irq, void *data) +{ + struct sdhci_host *sdhost = (struct sdhci_host *)data; + + tasklet_schedule(&sdhost->card_tasklet); + return IRQ_HANDLED; +}; + static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pdata) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data; struct clk *clk; + int err; clk = clk_get(mmc_dev(host->mmc), NULL); if (IS_ERR(clk)) { @@ -116,32 +180,78 @@ static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pd if (cpu_is_mx35() || cpu_is_mx51()) host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; - /* Fix errata ENGcm07207 which is present on i.MX25 and i.MX35 */ - if (cpu_is_mx25() || cpu_is_mx35()) + if (cpu_is_mx25() || cpu_is_mx35()) { + /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */ host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK; + /* write_protect can't be routed to controller, use gpio */ + sdhci_esdhc_ops.get_ro = esdhc_pltfm_get_ro; + } + + if (boarddata) { + err = gpio_request_one(boarddata->wp_gpio, GPIOF_IN, "ESDHC_WP"); + if (err) { + dev_warn(mmc_dev(host->mmc), + "no write-protect pin available!\n"); + boarddata->wp_gpio = err; + } + + err = gpio_request_one(boarddata->cd_gpio, GPIOF_IN, "ESDHC_CD"); + if (err) { + dev_warn(mmc_dev(host->mmc), + "no card-detect pin available!\n"); + goto no_card_detect_pin; + } + + /* i.MX5x has issues to be researched */ + if (!cpu_is_mx25() && !cpu_is_mx35()) + goto not_supported; + + err = request_irq(gpio_to_irq(boarddata->cd_gpio), cd_irq, + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, + mmc_hostname(host->mmc), host); + if (err) { + dev_warn(mmc_dev(host->mmc), "request irq error\n"); + goto no_card_detect_irq; + } + + sdhci_esdhc_ops.write_l = esdhc_writel_le; + sdhci_esdhc_ops.read_l = esdhc_readl_le; + /* Now we have a working card_detect again */ + host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; + } + + return 0; + no_card_detect_irq: + gpio_free(boarddata->cd_gpio); + no_card_detect_pin: + boarddata->cd_gpio = err; + not_supported: return 0; } static void esdhc_pltfm_exit(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data; + + if (boarddata && gpio_is_valid(boarddata->wp_gpio)) + gpio_free(boarddata->wp_gpio); + + if (boarddata && gpio_is_valid(boarddata->cd_gpio)) { + gpio_free(boarddata->cd_gpio); + + if (!(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)) + free_irq(gpio_to_irq(boarddata->cd_gpio), host); + } clk_disable(pltfm_host->clk); clk_put(pltfm_host->clk); } -static struct sdhci_ops sdhci_esdhc_ops = { - .read_w = esdhc_readw_le, - .write_w = esdhc_writew_le, - .write_b = esdhc_writeb_le, - .set_clock = esdhc_set_clock, - .get_max_clock = esdhc_pltfm_get_max_clock, - .get_min_clock = esdhc_pltfm_get_min_clock, -}; - struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { - .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA, + .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA + | SDHCI_QUIRK_BROKEN_CARD_DETECTION, /* ADMA has issues. Might be fixable */ .ops = &sdhci_esdhc_ops, .init = esdhc_pltfm_init, diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h index afaf1bc4913a..c55aae828aac 100644 --- a/drivers/mmc/host/sdhci-esdhc.h +++ b/drivers/mmc/host/sdhci-esdhc.h @@ -19,7 +19,6 @@ */ #define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \ - SDHCI_QUIRK_BROKEN_CARD_DETECTION | \ SDHCI_QUIRK_NO_BUSY_IRQ | \ SDHCI_QUIRK_NONSTANDARD_CLOCK | \ SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \ diff --git a/drivers/mmc/host/sdhci-of-core.c b/drivers/mmc/host/sdhci-of-core.c index dd84124f4209..f9b611fc773e 100644 --- a/drivers/mmc/host/sdhci-of-core.c +++ b/drivers/mmc/host/sdhci-of-core.c @@ -124,17 +124,20 @@ static bool __devinit sdhci_of_wp_inverted(struct device_node *np) #endif } -static int __devinit sdhci_of_probe(struct platform_device *ofdev, - const struct of_device_id *match) +static int __devinit sdhci_of_probe(struct platform_device *ofdev) { struct device_node *np = ofdev->dev.of_node; - struct sdhci_of_data *sdhci_of_data = match->data; + struct sdhci_of_data *sdhci_of_data; struct sdhci_host *host; struct sdhci_of_host *of_host; const __be32 *clk; int size; int ret; + if (!ofdev->dev.of_match) + return -EINVAL; + sdhci_of_data = ofdev->dev.of_match->data; + if (!of_device_is_available(np)) return -ENODEV; @@ -217,7 +220,7 @@ static const struct of_device_id sdhci_of_match[] = { }; MODULE_DEVICE_TABLE(of, sdhci_of_match); -static struct of_platform_driver sdhci_of_driver = { +static struct platform_driver sdhci_of_driver = { .driver = { .name = "sdhci-of", .owner = THIS_MODULE, @@ -231,13 +234,13 @@ static struct of_platform_driver sdhci_of_driver = { static int __init sdhci_of_init(void) { - return of_register_platform_driver(&sdhci_of_driver); + return platform_driver_register(&sdhci_of_driver); } module_init(sdhci_of_init); static void __exit sdhci_of_exit(void) { - of_unregister_platform_driver(&sdhci_of_driver); + platform_driver_unregister(&sdhci_of_driver); } module_exit(sdhci_of_exit); diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index fcd0e1fcba44..08161f690ae8 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -73,7 +73,8 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host) } struct sdhci_of_data sdhci_esdhc = { - .quirks = ESDHC_DEFAULT_QUIRKS, + /* card detection could be handled via GPIO */ + .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION, .ops = { .read_l = sdhci_be32bs_readl, .read_w = esdhc_readw, diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 0dc905b20eee..2f8d46854acd 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -547,6 +547,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = { }, { + .vendor = PCI_VENDOR_ID_RICOH, + .device = 0xe823, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc, + }, + + { .vendor = PCI_VENDOR_ID_ENE, .device = PCI_DEVICE_ID_ENE_CB712_SD, .subvendor = PCI_ANY_ID, @@ -900,9 +908,6 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( { struct sdhci_pci_slot *slot; struct sdhci_host *host; - - resource_size_t addr; - int ret; if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { @@ -949,7 +954,6 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( goto free; } - addr = pci_resource_start(pdev, bar); host->ioaddr = pci_ioremap_bar(pdev, bar); if (!host->ioaddr) { dev_err(&pdev->dev, "failed to remap registers\n"); diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index 17203586305c..69e3ee321eb5 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -277,10 +277,43 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) host->clock = clock; } +/** + * sdhci_s3c_platform_8bit_width - support 8bit buswidth + * @host: The SDHCI host being queried + * @width: MMC_BUS_WIDTH_ macro for the bus width being requested + * + * We have 8-bit width support but is not a v3 controller. + * So we add platform_8bit_width() and support 8bit width. + */ +static int sdhci_s3c_platform_8bit_width(struct sdhci_host *host, int width) +{ + u8 ctrl; + + ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); + + switch (width) { + case MMC_BUS_WIDTH_8: + ctrl |= SDHCI_CTRL_8BITBUS; + ctrl &= ~SDHCI_CTRL_4BITBUS; + break; + case MMC_BUS_WIDTH_4: + ctrl |= SDHCI_CTRL_4BITBUS; + ctrl &= ~SDHCI_CTRL_8BITBUS; + break; + default: + break; + } + + sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); + + return 0; +} + static struct sdhci_ops sdhci_s3c_ops = { .get_max_clock = sdhci_s3c_get_max_clk, .set_clock = sdhci_s3c_set_clock, .get_min_clock = sdhci_s3c_get_min_clock, + .platform_8bit_width = sdhci_s3c_platform_8bit_width, }; static void sdhci_s3c_notify_change(struct platform_device *dev, int state) @@ -466,6 +499,9 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) * SDHCI block, or a missing configuration that needs to be set. */ host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ; + /* This host supports the Auto CMD12 */ + host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12; + if (pdata->cd_type == S3C_SDHCI_CD_NONE || pdata->cd_type == S3C_SDHCI_CD_PERMANENT) host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; @@ -473,6 +509,9 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT) host->mmc->caps = MMC_CAP_NONREMOVABLE; + if (pdata->host_caps) + host->mmc->caps |= pdata->host_caps; + host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE); diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 4823ee94a63f..f7e1f964395f 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -169,7 +169,7 @@ static int tegra_sdhci_pltfm_init(struct sdhci_host *host, if (rc) { dev_err(mmc_dev(host->mmc), "failed to allocate wp gpio\n"); - goto out_cd; + goto out_irq; } tegra_gpio_enable(plat->wp_gpio); gpio_direction_input(plat->wp_gpio); @@ -195,6 +195,9 @@ out_wp: gpio_free(plat->wp_gpio); } +out_irq: + if (gpio_is_valid(plat->cd_gpio)) + free_irq(gpio_to_irq(plat->cd_gpio), host); out_cd: if (gpio_is_valid(plat->cd_gpio)) { tegra_gpio_disable(plat->cd_gpio); @@ -225,6 +228,7 @@ static void tegra_sdhci_pltfm_exit(struct sdhci_host *host) } if (gpio_is_valid(plat->cd_gpio)) { + free_irq(gpio_to_irq(plat->cd_gpio), host); tegra_gpio_disable(plat->cd_gpio); gpio_free(plat->cd_gpio); } diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index 12884c270171..af97015a2fc7 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -169,7 +169,7 @@ struct sh_mmcif_host { struct dma_chan *chan_rx; struct dma_chan *chan_tx; struct completion dma_complete; - unsigned int dma_sglen; + bool dma_active; }; static inline void sh_mmcif_bitset(struct sh_mmcif_host *host, @@ -194,10 +194,12 @@ static void mmcif_dma_complete(void *arg) return; if (host->data->flags & MMC_DATA_READ) - dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen, + dma_unmap_sg(host->chan_rx->device->dev, + host->data->sg, host->data->sg_len, DMA_FROM_DEVICE); else - dma_unmap_sg(&host->pd->dev, host->data->sg, host->dma_sglen, + dma_unmap_sg(host->chan_tx->device->dev, + host->data->sg, host->data->sg_len, DMA_TO_DEVICE); complete(&host->dma_complete); @@ -211,9 +213,10 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) dma_cookie_t cookie = -EINVAL; int ret; - ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_FROM_DEVICE); + ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, + DMA_FROM_DEVICE); if (ret > 0) { - host->dma_sglen = ret; + host->dma_active = true; desc = chan->device->device_prep_slave_sg(chan, sg, ret, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } @@ -221,14 +224,9 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) if (desc) { desc->callback = mmcif_dma_complete; desc->callback_param = host; - cookie = desc->tx_submit(desc); - if (cookie < 0) { - desc = NULL; - ret = cookie; - } else { - sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN); - chan->device->device_issue_pending(chan); - } + cookie = dmaengine_submit(desc); + sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN); + dma_async_issue_pending(chan); } dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", __func__, host->data->sg_len, ret, cookie); @@ -238,7 +236,7 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) if (ret >= 0) ret = -EIO; host->chan_rx = NULL; - host->dma_sglen = 0; + host->dma_active = false; dma_release_channel(chan); /* Free the Tx channel too */ chan = host->chan_tx; @@ -263,9 +261,10 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) dma_cookie_t cookie = -EINVAL; int ret; - ret = dma_map_sg(&host->pd->dev, sg, host->data->sg_len, DMA_TO_DEVICE); + ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, + DMA_TO_DEVICE); if (ret > 0) { - host->dma_sglen = ret; + host->dma_active = true; desc = chan->device->device_prep_slave_sg(chan, sg, ret, DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } @@ -273,14 +272,9 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) if (desc) { desc->callback = mmcif_dma_complete; desc->callback_param = host; - cookie = desc->tx_submit(desc); - if (cookie < 0) { - desc = NULL; - ret = cookie; - } else { - sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN); - chan->device->device_issue_pending(chan); - } + cookie = dmaengine_submit(desc); + sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN); + dma_async_issue_pending(chan); } dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", __func__, host->data->sg_len, ret, cookie); @@ -290,7 +284,7 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) if (ret >= 0) ret = -EIO; host->chan_tx = NULL; - host->dma_sglen = 0; + host->dma_active = false; dma_release_channel(chan); /* Free the Rx channel too */ chan = host->chan_rx; @@ -317,7 +311,7 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg) static void sh_mmcif_request_dma(struct sh_mmcif_host *host, struct sh_mmcif_plat_data *pdata) { - host->dma_sglen = 0; + host->dma_active = false; /* We can only either use DMA for both Tx and Rx or not use it at all */ if (pdata->dma) { @@ -364,7 +358,7 @@ static void sh_mmcif_release_dma(struct sh_mmcif_host *host) dma_release_channel(chan); } - host->dma_sglen = 0; + host->dma_active = false; } static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk) @@ -753,7 +747,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, } sh_mmcif_get_response(host, cmd); if (host->data) { - if (!host->dma_sglen) { + if (!host->dma_active) { ret = sh_mmcif_data_trans(host, mrq, cmd->opcode); } else { long time = @@ -765,7 +759,7 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, ret = time; sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); - host->dma_sglen = 0; + host->dma_active = false; } if (ret < 0) mrq->data->bytes_xfered = 0; @@ -850,15 +844,15 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct sh_mmcif_host *host = mmc_priv(mmc); struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; - if (ios->power_mode == MMC_POWER_OFF) { + if (ios->power_mode == MMC_POWER_UP) { + if (p->set_pwr) + p->set_pwr(host->pd, ios->power_mode); + } else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) { /* clock stop */ sh_mmcif_clock_control(host, 0); - if (p->down_pwr) + if (ios->power_mode == MMC_POWER_OFF && p->down_pwr) p->down_pwr(host->pd); return; - } else if (ios->power_mode == MMC_POWER_UP) { - if (p->set_pwr) - p->set_pwr(host->pd, ios->power_mode); } if (ios->clock) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index e3c6ef208391..ab1adeabdd22 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -152,7 +152,6 @@ struct tmio_mmc_host { struct tasklet_struct dma_complete; struct tasklet_struct dma_issue; #ifdef CONFIG_TMIO_MMC_DMA - unsigned int dma_sglen; u8 bounce_buf[PAGE_CACHE_SIZE] __attribute__((aligned(MAX_ALIGN))); struct scatterlist bounce_sg; #endif @@ -220,44 +219,48 @@ static char *tmio_mmc_kmap_atomic(struct scatterlist *sg, unsigned long *flags) return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; } -static void tmio_mmc_kunmap_atomic(void *virt, unsigned long *flags) +static void tmio_mmc_kunmap_atomic(struct scatterlist *sg, unsigned long *flags, void *virt) { - kunmap_atomic(virt, KM_BIO_SRC_IRQ); + kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ); local_irq_restore(*flags); } #ifdef CONFIG_MMC_DEBUG -#define STATUS_TO_TEXT(a) \ +#define STATUS_TO_TEXT(a, status, i) \ do { \ - if (status & TMIO_STAT_##a) \ + if (status & TMIO_STAT_##a) { \ + if (i++) \ + printk(" | "); \ printk(#a); \ + } \ } while (0) void pr_debug_status(u32 status) { + int i = 0; printk(KERN_DEBUG "status: %08x = ", status); - STATUS_TO_TEXT(CARD_REMOVE); - STATUS_TO_TEXT(CARD_INSERT); - STATUS_TO_TEXT(SIGSTATE); - STATUS_TO_TEXT(WRPROTECT); - STATUS_TO_TEXT(CARD_REMOVE_A); - STATUS_TO_TEXT(CARD_INSERT_A); - STATUS_TO_TEXT(SIGSTATE_A); - STATUS_TO_TEXT(CMD_IDX_ERR); - STATUS_TO_TEXT(STOPBIT_ERR); - STATUS_TO_TEXT(ILL_FUNC); - STATUS_TO_TEXT(CMD_BUSY); - STATUS_TO_TEXT(CMDRESPEND); - STATUS_TO_TEXT(DATAEND); - STATUS_TO_TEXT(CRCFAIL); - STATUS_TO_TEXT(DATATIMEOUT); - STATUS_TO_TEXT(CMDTIMEOUT); - STATUS_TO_TEXT(RXOVERFLOW); - STATUS_TO_TEXT(TXUNDERRUN); - STATUS_TO_TEXT(RXRDY); - STATUS_TO_TEXT(TXRQ); - STATUS_TO_TEXT(ILL_ACCESS); + STATUS_TO_TEXT(CARD_REMOVE, status, i); + STATUS_TO_TEXT(CARD_INSERT, status, i); + STATUS_TO_TEXT(SIGSTATE, status, i); + STATUS_TO_TEXT(WRPROTECT, status, i); + STATUS_TO_TEXT(CARD_REMOVE_A, status, i); + STATUS_TO_TEXT(CARD_INSERT_A, status, i); + STATUS_TO_TEXT(SIGSTATE_A, status, i); + STATUS_TO_TEXT(CMD_IDX_ERR, status, i); + STATUS_TO_TEXT(STOPBIT_ERR, status, i); + STATUS_TO_TEXT(ILL_FUNC, status, i); + STATUS_TO_TEXT(CMD_BUSY, status, i); + STATUS_TO_TEXT(CMDRESPEND, status, i); + STATUS_TO_TEXT(DATAEND, status, i); + STATUS_TO_TEXT(CRCFAIL, status, i); + STATUS_TO_TEXT(DATATIMEOUT, status, i); + STATUS_TO_TEXT(CMDTIMEOUT, status, i); + STATUS_TO_TEXT(RXOVERFLOW, status, i); + STATUS_TO_TEXT(TXUNDERRUN, status, i); + STATUS_TO_TEXT(RXRDY, status, i); + STATUS_TO_TEXT(TXRQ, status, i); + STATUS_TO_TEXT(ILL_ACCESS, status, i); printk("\n"); } @@ -300,8 +303,7 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock) static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) { - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); /* * Testing on sh-mobile showed that SDIO IRQs are unmasked when @@ -324,8 +326,7 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host) static void tmio_mmc_clk_start(struct tmio_mmc_host *host) { - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, 0x0100 | sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL)); @@ -507,7 +508,7 @@ static void tmio_mmc_pio_irq(struct tmio_mmc_host *host) host->sg_off += count; - tmio_mmc_kunmap_atomic(sg_virt, &flags); + tmio_mmc_kunmap_atomic(host->sg_ptr, &flags, sg_virt); if (host->sg_off == host->sg_ptr->length) tmio_mmc_next_sg(host); @@ -666,8 +667,7 @@ out: static irqreturn_t tmio_mmc_irq(int irq, void *devid) { struct tmio_mmc_host *host = devid; - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); unsigned int ireg, irq_mask, status; unsigned int sdio_ireg, sdio_irq_mask, sdio_status; @@ -767,7 +767,7 @@ static void tmio_check_bounce_buffer(struct tmio_mmc_host *host) unsigned long flags; void *sg_vaddr = tmio_mmc_kmap_atomic(host->sg_orig, &flags); memcpy(sg_vaddr, host->bounce_buf, host->bounce_sg.length); - tmio_mmc_kunmap_atomic(sg_vaddr, &flags); + tmio_mmc_kunmap_atomic(host->sg_orig, &flags, sg_vaddr); } } @@ -796,8 +796,7 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) struct scatterlist *sg = host->sg_ptr, *sg_tmp; struct dma_async_tx_descriptor *desc = NULL; struct dma_chan *chan = host->chan_rx; - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); dma_cookie_t cookie; int ret, i; bool aligned = true, multiple = true; @@ -825,23 +824,16 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) sg = host->sg_ptr; } - ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_FROM_DEVICE); - if (ret > 0) { - host->dma_sglen = ret; + ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE); + if (ret > 0) desc = chan->device->device_prep_slave_sg(chan, sg, ret, DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - } if (desc) { desc->callback = tmio_dma_complete; desc->callback_param = host; - cookie = desc->tx_submit(desc); - if (cookie < 0) { - desc = NULL; - ret = cookie; - } else { - chan->device->device_issue_pending(chan); - } + cookie = dmaengine_submit(desc); + dma_async_issue_pending(chan); } dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n", __func__, host->sg_len, ret, cookie, host->mrq); @@ -873,8 +865,7 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host) struct scatterlist *sg = host->sg_ptr, *sg_tmp; struct dma_async_tx_descriptor *desc = NULL; struct dma_chan *chan = host->chan_tx; - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); dma_cookie_t cookie; int ret, i; bool aligned = true, multiple = true; @@ -901,26 +892,20 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host) void *sg_vaddr = tmio_mmc_kmap_atomic(sg, &flags); sg_init_one(&host->bounce_sg, host->bounce_buf, sg->length); memcpy(host->bounce_buf, sg_vaddr, host->bounce_sg.length); - tmio_mmc_kunmap_atomic(sg_vaddr, &flags); + tmio_mmc_kunmap_atomic(sg, &flags, sg_vaddr); host->sg_ptr = &host->bounce_sg; sg = host->sg_ptr; } - ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, DMA_TO_DEVICE); - if (ret > 0) { - host->dma_sglen = ret; + ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE); + if (ret > 0) desc = chan->device->device_prep_slave_sg(chan, sg, ret, DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - } if (desc) { desc->callback = tmio_dma_complete; desc->callback_param = host; - cookie = desc->tx_submit(desc); - if (cookie < 0) { - desc = NULL; - ret = cookie; - } + cookie = dmaengine_submit(desc); } dev_dbg(&host->pdev->dev, "%s(): mapped %d -> %d, cookie %d, rq %p\n", __func__, host->sg_len, ret, cookie, host->mrq); @@ -964,7 +949,7 @@ static void tmio_issue_tasklet_fn(unsigned long priv) struct tmio_mmc_host *host = (struct tmio_mmc_host *)priv; struct dma_chan *chan = host->chan_tx; - chan->device->device_issue_pending(chan); + dma_async_issue_pending(chan); } static void tmio_tasklet_fn(unsigned long arg) @@ -978,10 +963,12 @@ static void tmio_tasklet_fn(unsigned long arg) goto out; if (host->data->flags & MMC_DATA_READ) - dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen, + dma_unmap_sg(host->chan_rx->device->dev, + host->sg_ptr, host->sg_len, DMA_FROM_DEVICE); else - dma_unmap_sg(&host->pdev->dev, host->sg_ptr, host->dma_sglen, + dma_unmap_sg(host->chan_tx->device->dev, + host->sg_ptr, host->sg_len, DMA_TO_DEVICE); tmio_mmc_do_data_irq(host); @@ -1071,8 +1058,7 @@ static void tmio_mmc_release_dma(struct tmio_mmc_host *host) static int tmio_mmc_start_data(struct tmio_mmc_host *host, struct mmc_data *data) { - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); pr_debug("setup data transfer: blocksize %08x nr_blocks %d\n", data->blksz, data->blocks); @@ -1177,8 +1163,7 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) static int tmio_mmc_get_ro(struct mmc_host *mmc) { struct tmio_mmc_host *host = mmc_priv(mmc); - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); return ((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) || (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)) ? 0 : 1; @@ -1187,8 +1172,7 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc) static int tmio_mmc_get_cd(struct mmc_host *mmc) { struct tmio_mmc_host *host = mmc_priv(mmc); - struct mfd_cell *cell = host->pdev->dev.platform_data; - struct tmio_mmc_data *pdata = cell->driver_data; + struct tmio_mmc_data *pdata = mfd_get_data(host->pdev); if (!pdata->get_cd) return -ENOSYS; @@ -1207,7 +1191,7 @@ static const struct mmc_host_ops tmio_mmc_ops = { #ifdef CONFIG_PM static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + const struct mfd_cell *cell = mfd_get_cell(dev); struct mmc_host *mmc = platform_get_drvdata(dev); int ret; @@ -1222,7 +1206,7 @@ static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state) static int tmio_mmc_resume(struct platform_device *dev) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + const struct mfd_cell *cell = mfd_get_cell(dev); struct mmc_host *mmc = platform_get_drvdata(dev); int ret = 0; @@ -1245,7 +1229,7 @@ out: static int __devinit tmio_mmc_probe(struct platform_device *dev) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + const struct mfd_cell *cell = mfd_get_cell(dev); struct tmio_mmc_data *pdata; struct resource *res_ctl; struct tmio_mmc_host *host; @@ -1260,7 +1244,7 @@ static int __devinit tmio_mmc_probe(struct platform_device *dev) if (!res_ctl) goto out; - pdata = cell->driver_data; + pdata = mfd_get_data(dev); if (!pdata || !pdata->hclk) goto out; @@ -1360,7 +1344,7 @@ out: static int __devexit tmio_mmc_remove(struct platform_device *dev) { - struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data; + const struct mfd_cell *cell = mfd_get_cell(dev); struct mmc_host *mmc = platform_get_drvdata(dev); platform_set_drvdata(dev, NULL); diff --git a/drivers/mmc/host/ushc.c b/drivers/mmc/host/ushc.c index f8f65df9b017..f08f944ac53c 100644 --- a/drivers/mmc/host/ushc.c +++ b/drivers/mmc/host/ushc.c @@ -19,7 +19,6 @@ #include <linux/module.h> #include <linux/usb.h> #include <linux/kernel.h> -#include <linux/usb.h> #include <linux/slab.h> #include <linux/dma-mapping.h> #include <linux/mmc/host.h> diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c index 9ed84ddb4780..8c5b4881ccd6 100644 --- a/drivers/mmc/host/via-sdmmc.c +++ b/drivers/mmc/host/via-sdmmc.c @@ -802,12 +802,9 @@ static const struct mmc_host_ops via_sdc_ops = { static void via_reset_pcictrl(struct via_crdr_mmc_host *host) { - void __iomem *addrbase; unsigned long flags; u8 gatt; - addrbase = host->pcictrl_mmiobase; - spin_lock_irqsave(&host->lock, flags); via_save_pcictrlreg(host); |