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-rw-r--r--drivers/mmc/core/sdio.c6
-rw-r--r--drivers/mmc/host/mxcmmc.c114
-rw-r--r--drivers/mtd/nand/mxc_nand.c125
-rw-r--r--drivers/usb/host/ehci-mxc.c4
4 files changed, 177 insertions, 72 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 2dd4cfe7ca17..b9dee28ee7d0 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -296,6 +296,12 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
card->type = MMC_TYPE_SDIO;
/*
+ * Call the optional HC's init_card function to handle quirks.
+ */
+ if (host->ops->init_card)
+ host->ops->init_card(host, card);
+
+ /*
* For native busses: set card RCA and quit open drain mode.
*/
if (!powered_resume && !mmc_host_is_spi(host)) {
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 2df90412abb5..ec18e3b60342 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -119,6 +119,7 @@ struct mxcmci_host {
int detect_irq;
int dma;
int do_dma;
+ int use_sdio;
unsigned int power_mode;
struct imxmmc_platform_data *pdata;
@@ -138,6 +139,7 @@ struct mxcmci_host {
int clock;
struct work_struct datawork;
+ spinlock_t lock;
};
static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);
@@ -151,6 +153,8 @@ static void mxcmci_softreset(struct mxcmci_host *host)
{
int i;
+ dev_dbg(mmc_dev(host->mmc), "mxcmci_softreset\n");
+
/* reset sequence */
writew(STR_STP_CLK_RESET, host->base + MMC_REG_STR_STP_CLK);
writew(STR_STP_CLK_RESET | STR_STP_CLK_START_CLK,
@@ -224,6 +228,9 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
unsigned int cmdat)
{
+ u32 int_cntr;
+ unsigned long flags;
+
WARN_ON(host->cmd != NULL);
host->cmd = cmd;
@@ -247,12 +254,16 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
return -EINVAL;
}
+ int_cntr = INT_END_CMD_RES_EN;
+
if (mxcmci_use_dma(host))
- writel(INT_READ_OP_EN | INT_WRITE_OP_DONE_EN |
- INT_END_CMD_RES_EN,
- host->base + MMC_REG_INT_CNTR);
- else
- writel(INT_END_CMD_RES_EN, host->base + MMC_REG_INT_CNTR);
+ int_cntr |= INT_READ_OP_EN | INT_WRITE_OP_DONE_EN;
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (host->use_sdio)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
writew(cmd->opcode, host->base + MMC_REG_CMD);
writel(cmd->arg, host->base + MMC_REG_ARG);
@@ -264,7 +275,14 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
static void mxcmci_finish_request(struct mxcmci_host *host,
struct mmc_request *req)
{
- writel(0, host->base + MMC_REG_INT_CNTR);
+ u32 int_cntr = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (host->use_sdio)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
host->req = NULL;
host->cmd = NULL;
@@ -290,16 +308,25 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat)
dev_dbg(mmc_dev(host->mmc), "request failed. status: 0x%08x\n",
stat);
if (stat & STATUS_CRC_READ_ERR) {
+ dev_err(mmc_dev(host->mmc), "%s: -EILSEQ\n", __func__);
data->error = -EILSEQ;
} else if (stat & STATUS_CRC_WRITE_ERR) {
u32 err_code = (stat >> 9) & 0x3;
- if (err_code == 2) /* No CRC response */
+ if (err_code == 2) { /* No CRC response */
+ dev_err(mmc_dev(host->mmc),
+ "%s: No CRC -ETIMEDOUT\n", __func__);
data->error = -ETIMEDOUT;
- else
+ } else {
+ dev_err(mmc_dev(host->mmc),
+ "%s: -EILSEQ\n", __func__);
data->error = -EILSEQ;
+ }
} else if (stat & STATUS_TIME_OUT_READ) {
+ dev_err(mmc_dev(host->mmc),
+ "%s: read -ETIMEDOUT\n", __func__);
data->error = -ETIMEDOUT;
} else {
+ dev_err(mmc_dev(host->mmc), "%s: -EIO\n", __func__);
data->error = -EIO;
}
} else {
@@ -433,8 +460,6 @@ static int mxcmci_transfer_data(struct mxcmci_host *host)
struct scatterlist *sg;
int stat, i;
- host->datasize = 0;
-
host->data = data;
host->datasize = 0;
@@ -464,6 +489,9 @@ static void mxcmci_datawork(struct work_struct *work)
struct mxcmci_host *host = container_of(work, struct mxcmci_host,
datawork);
int datastat = mxcmci_transfer_data(host);
+
+ writel(STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE,
+ host->base + MMC_REG_STATUS);
mxcmci_finish_data(host, datastat);
if (host->req->stop) {
@@ -523,15 +551,35 @@ static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat)
static irqreturn_t mxcmci_irq(int irq, void *devid)
{
struct mxcmci_host *host = devid;
+ unsigned long flags;
+ bool sdio_irq;
u32 stat;
stat = readl(host->base + MMC_REG_STATUS);
- writel(stat, host->base + MMC_REG_STATUS);
+ writel(stat & ~(STATUS_SDIO_INT_ACTIVE | STATUS_DATA_TRANS_DONE |
+ STATUS_WRITE_OP_DONE), host->base + MMC_REG_STATUS);
dev_dbg(mmc_dev(host->mmc), "%s: 0x%08x\n", __func__, stat);
+ spin_lock_irqsave(&host->lock, flags);
+ 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);
+ mmc_signal_sdio_irq(host->mmc);
+ }
+
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)))
@@ -668,11 +716,46 @@ static int mxcmci_get_ro(struct mmc_host *mmc)
return -ENOSYS;
}
+static void mxcmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct mxcmci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ u32 int_cntr;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->use_sdio = enable;
+ int_cntr = readl(host->base + MMC_REG_INT_CNTR);
+
+ if (enable)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ else
+ int_cntr &= ~INT_SDIO_IRQ_EN;
+
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
+{
+ /*
+ * MX3 SoCs have a silicon bug which corrupts CRC calculation of
+ * multi-block transfers when connected SDIO peripheral doesn't
+ * drive the BUSY line as required by the specs.
+ * One way to prevent this is to only allow 1-bit transfers.
+ */
+
+ if (cpu_is_mx3() && card->type == MMC_TYPE_SDIO)
+ host->caps &= ~MMC_CAP_4_BIT_DATA;
+ else
+ host->caps |= MMC_CAP_4_BIT_DATA;
+}
static const struct mmc_host_ops mxcmci_ops = {
- .request = mxcmci_request,
- .set_ios = mxcmci_set_ios,
- .get_ro = mxcmci_get_ro,
+ .request = mxcmci_request,
+ .set_ios = mxcmci_set_ios,
+ .get_ro = mxcmci_get_ro,
+ .enable_sdio_irq = mxcmci_enable_sdio_irq,
+ .init_card = mxcmci_init_card,
};
static int mxcmci_probe(struct platform_device *pdev)
@@ -700,7 +783,7 @@ static int mxcmci_probe(struct platform_device *pdev)
}
mmc->ops = &mxcmci_ops;
- mmc->caps = MMC_CAP_4_BIT_DATA;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
/* MMC core transfer sizes tunable parameters */
mmc->max_hw_segs = 64;
@@ -719,6 +802,7 @@ static int mxcmci_probe(struct platform_device *pdev)
host->mmc = mmc;
host->pdata = pdev->dev.platform_data;
+ spin_lock_init(&host->lock);
if (host->pdata && host->pdata->ocr_avail)
mmc->ocr_avail = host->pdata->ocr_avail;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index b2900d8406d3..fb03aff8e83a 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -38,7 +38,7 @@
#define DRIVER_NAME "mxc_nand"
#define nfc_is_v21() (cpu_is_mx25() || cpu_is_mx35())
-#define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27())
+#define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27() || cpu_is_mx21())
/* Addresses for NFC registers */
#define NFC_BUF_SIZE 0xE00
@@ -168,11 +168,7 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id)
{
struct mxc_nand_host *host = dev_id;
- uint16_t tmp;
-
- tmp = readw(host->regs + NFC_CONFIG1);
- tmp |= NFC_INT_MSK; /* Disable interrupt */
- writew(tmp, host->regs + NFC_CONFIG1);
+ disable_irq_nosync(irq);
wake_up(&host->irq_waitq);
@@ -184,15 +180,13 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id)
*/
static void wait_op_done(struct mxc_nand_host *host, int useirq)
{
- uint32_t tmp;
- int max_retries = 2000;
+ uint16_t tmp;
+ int max_retries = 8000;
if (useirq) {
if ((readw(host->regs + NFC_CONFIG2) & NFC_INT) == 0) {
- tmp = readw(host->regs + NFC_CONFIG1);
- tmp &= ~NFC_INT_MSK; /* Enable interrupt */
- writew(tmp, host->regs + NFC_CONFIG1);
+ enable_irq(host->irq);
wait_event(host->irq_waitq,
readw(host->regs + NFC_CONFIG2) & NFC_INT);
@@ -226,8 +220,23 @@ static void send_cmd(struct mxc_nand_host *host, uint16_t cmd, int useirq)
writew(cmd, host->regs + NFC_FLASH_CMD);
writew(NFC_CMD, host->regs + NFC_CONFIG2);
- /* Wait for operation to complete */
- wait_op_done(host, useirq);
+ if (cpu_is_mx21() && (cmd == NAND_CMD_RESET)) {
+ int max_retries = 100;
+ /* Reset completion is indicated by NFC_CONFIG2 */
+ /* being set to 0 */
+ while (max_retries-- > 0) {
+ if (readw(host->regs + NFC_CONFIG2) == 0) {
+ break;
+ }
+ udelay(1);
+ }
+ if (max_retries < 0)
+ DEBUG(MTD_DEBUG_LEVEL0, "%s: RESET failed\n",
+ __func__);
+ } else {
+ /* Wait for operation to complete */
+ wait_op_done(host, useirq);
+ }
}
/* This function sends an address (or partial address) to the
@@ -542,6 +551,41 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr)
}
}
+static void preset(struct mtd_info *mtd)
+{
+ struct nand_chip *nand_chip = mtd->priv;
+ struct mxc_nand_host *host = nand_chip->priv;
+ uint16_t tmp;
+
+ /* enable interrupt, disable spare enable */
+ tmp = readw(host->regs + NFC_CONFIG1);
+ tmp &= ~NFC_INT_MSK;
+ tmp &= ~NFC_SP_EN;
+ if (nand_chip->ecc.mode == NAND_ECC_HW) {
+ tmp |= NFC_ECC_EN;
+ } else {
+ tmp &= ~NFC_ECC_EN;
+ }
+ writew(tmp, host->regs + NFC_CONFIG1);
+ /* preset operation */
+
+ /* Unlock the internal RAM Buffer */
+ writew(0x2, host->regs + NFC_CONFIG);
+
+ /* Blocks to be unlocked */
+ if (nfc_is_v21()) {
+ writew(0x0, host->regs + NFC_V21_UNLOCKSTART_BLKADDR);
+ writew(0xffff, host->regs + NFC_V21_UNLOCKEND_BLKADDR);
+ } else if (nfc_is_v1()) {
+ writew(0x0, host->regs + NFC_V1_UNLOCKSTART_BLKADDR);
+ writew(0x4000, host->regs + NFC_V1_UNLOCKEND_BLKADDR);
+ } else
+ BUG();
+
+ /* Unlock Block Command for given address range */
+ writew(0x4, host->regs + NFC_WRPROT);
+}
+
/* Used by the upper layer to write command to NAND Flash for
* different operations to be carried out on NAND Flash */
static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
@@ -559,6 +603,10 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
/* Command pre-processing step */
switch (command) {
+ case NAND_CMD_RESET:
+ send_cmd(host, command, false);
+ preset(mtd);
+ break;
case NAND_CMD_STATUS:
host->buf_start = 0;
@@ -679,7 +727,6 @@ static int __init mxcnd_probe(struct platform_device *pdev)
struct mxc_nand_platform_data *pdata = pdev->dev.platform_data;
struct mxc_nand_host *host;
struct resource *res;
- uint16_t tmp;
int err = 0, nr_parts = 0;
struct nand_ecclayout *oob_smallpage, *oob_largepage;
@@ -743,51 +790,17 @@ static int __init mxcnd_probe(struct platform_device *pdev)
host->spare_len = 64;
oob_smallpage = &nandv2_hw_eccoob_smallpage;
oob_largepage = &nandv2_hw_eccoob_largepage;
+ this->ecc.bytes = 9;
} else if (nfc_is_v1()) {
host->regs = host->base;
host->spare0 = host->base + 0x800;
host->spare_len = 16;
oob_smallpage = &nandv1_hw_eccoob_smallpage;
oob_largepage = &nandv1_hw_eccoob_largepage;
- } else
- BUG();
-
- /* disable interrupt and spare enable */
- tmp = readw(host->regs + NFC_CONFIG1);
- tmp |= NFC_INT_MSK;
- tmp &= ~NFC_SP_EN;
- writew(tmp, host->regs + NFC_CONFIG1);
-
- init_waitqueue_head(&host->irq_waitq);
-
- host->irq = platform_get_irq(pdev, 0);
-
- err = request_irq(host->irq, mxc_nfc_irq, 0, DRIVER_NAME, host);
- if (err)
- goto eirq;
-
- /* Reset NAND */
- this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
-
- /* preset operation */
- /* Unlock the internal RAM Buffer */
- writew(0x2, host->regs + NFC_CONFIG);
-
- /* Blocks to be unlocked */
- if (nfc_is_v21()) {
- writew(0x0, host->regs + NFC_V21_UNLOCKSTART_BLKADDR);
- writew(0xffff, host->regs + NFC_V21_UNLOCKEND_BLKADDR);
- this->ecc.bytes = 9;
- } else if (nfc_is_v1()) {
- writew(0x0, host->regs + NFC_V1_UNLOCKSTART_BLKADDR);
- writew(0x4000, host->regs + NFC_V1_UNLOCKEND_BLKADDR);
this->ecc.bytes = 3;
} else
BUG();
- /* Unlock Block Command for given address range */
- writew(0x4, host->regs + NFC_WRPROT);
-
this->ecc.size = 512;
this->ecc.layout = oob_smallpage;
@@ -796,14 +809,8 @@ static int __init mxcnd_probe(struct platform_device *pdev)
this->ecc.hwctl = mxc_nand_enable_hwecc;
this->ecc.correct = mxc_nand_correct_data;
this->ecc.mode = NAND_ECC_HW;
- tmp = readw(host->regs + NFC_CONFIG1);
- tmp |= NFC_ECC_EN;
- writew(tmp, host->regs + NFC_CONFIG1);
} else {
this->ecc.mode = NAND_ECC_SOFT;
- tmp = readw(host->regs + NFC_CONFIG1);
- tmp &= ~NFC_ECC_EN;
- writew(tmp, host->regs + NFC_CONFIG1);
}
/* NAND bus width determines access funtions used by upper layer */
@@ -817,6 +824,14 @@ static int __init mxcnd_probe(struct platform_device *pdev)
this->options |= NAND_USE_FLASH_BBT;
}
+ init_waitqueue_head(&host->irq_waitq);
+
+ host->irq = platform_get_irq(pdev, 0);
+
+ err = request_irq(host->irq, mxc_nfc_irq, IRQF_DISABLED, DRIVER_NAME, host);
+ if (err)
+ goto eirq;
+
/* first scan to find the device and get the page size */
if (nand_scan_ident(mtd, 1)) {
err = -ENXIO;
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index ead59f42e69b..544ccfd7056e 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -199,8 +199,8 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
writel(pdata->portsc, hcd->regs + PORTSC_OFFSET);
mdelay(10);
- /* setup USBCONTROL. */
- ret = mxc_set_usbcontrol(pdev->id, pdata->flags);
+ /* setup specific usb hw */
+ ret = mxc_initialize_usb_hw(pdev->id, pdata->flags);
if (ret < 0)
goto err_init;
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