#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
+#include <linux/crc7.h>
#include <asm/dma.h>
#include <asm/dma-mapping.h>
#include "glamo-core.h"
#include "glamo-regs.h"
-/* from glamo-core.c */
-extern struct glamo_mci_pdata glamo_mci_def_pdata;
-
-static spinlock_t clock_lock;
-
#define DRIVER_NAME "glamo-mci"
-#define RESSIZE(ressource) (((ressource)->end - (ressource)->start) + 1)
static void glamo_mci_send_request(struct mmc_host *mmc);
+static void glamo_mci_send_command(struct glamo_mci_host *host,
+ struct mmc_command *cmd);
/*
* Max SD clock rate
/* used to stash real idleclk state in suspend: we force it to run in there */
static int suspend_sd_idleclk;
-
-unsigned char CRC7(u8 * pu8, int cnt)
+static inline void glamo_reg_write(struct glamo_mci_host *glamo,
+ u_int16_t reg, u_int16_t val)
{
- u8 crc = 0;
-
- while (cnt--) {
- int n;
- u8 d = *pu8++;
- for (n = 0; n < 8; n++) {
- crc <<= 1;
- if ((d & 0x80) ^ (crc & 0x80))
- crc ^= 0x09;
- d <<= 1;
- }
- }
- return (crc << 1) | 1;
+ writew(val, glamo->mmio_base + reg);
}
-static int get_data_buffer(struct glamo_mci_host *host,
- volatile u32 *words, volatile u16 **pointer)
+static inline u_int16_t glamo_reg_read(struct glamo_mci_host *glamo,
+ u_int16_t reg)
{
- struct scatterlist *sg;
-
- *words = 0;
- *pointer = NULL;
-
- if (host->pio_active == XFER_NONE)
- return -EINVAL;
-
- if ((!host->mrq) || (!host->mrq->data))
- return -EINVAL;
-
- if (host->pio_sgptr >= host->mrq->data->sg_len) {
- dev_dbg(&host->pdev->dev, "no more buffers (%i/%i)\n",
- host->pio_sgptr, host->mrq->data->sg_len);
- return -EBUSY;
- }
- sg = &host->mrq->data->sg[host->pio_sgptr];
-
- *words = sg->length >> 1; /* we are working with a 16-bit data bus */
- *pointer = page_address(sg_page(sg)) + sg->offset;
+ return readw(glamo->mmio_base + reg);
+}
- BUG_ON(((long)(*pointer)) & 1);
+static void glamo_reg_set_bit_mask(struct glamo_mci_host *glamo,
+ u_int16_t reg, u_int16_t mask,
+ u_int16_t val)
+{
+ u_int16_t tmp;
- host->pio_sgptr++;
+ val &= mask;
- /* dev_info(&host->pdev->dev, "new buffer (%i/%i)\n",
- host->pio_sgptr, host->mrq->data->sg_len); */
- return 0;
+ tmp = glamo_reg_read(glamo, reg);
+ tmp &= ~mask;
+ tmp |= val;
+ glamo_reg_write(glamo, reg, tmp);
}
static void do_pio_read(struct glamo_mci_host *host)
{
- int res;
- u16 __iomem *from_ptr = host->base_data + (RESSIZE(host->mem_data) /
- sizeof(u16) / 2);
-#ifdef DEBUG
- u16 * block;
-#endif
-
- while (1) {
- res = get_data_buffer(host, &host->pio_words, &host->pio_ptr);
- if (res) {
- host->pio_active = XFER_NONE;
- host->complete_what = COMPLETION_FINALIZE;
-
- dev_dbg(&host->pdev->dev, "pio_read(): "
- "complete (no more data).\n");
- return;
- }
+ struct scatterlist *sg;
+ u16 __iomem *from_ptr = host->data_base;
+ struct mmc_data *data = host->mrq->data;
+ void *sg_pointer;
- dev_dbg(&host->pdev->dev, "pio_read(): host->pio_words: %d\n",
- host->pio_words);
-
- host->pio_count += host->pio_words << 1;
-
-#ifdef DEBUG
- block = (u16 *)host->pio_ptr;
- res = host->pio_words << 1;
-#endif
-#if 0
- /* u16-centric memcpy */
- while (host->pio_words--)
- *host->pio_ptr++ = *from_ptr++;
-#else
- /* memcpy can be faster? */
- memcpy((void *)host->pio_ptr, from_ptr, host->pio_words << 1);
- host->pio_ptr += host->pio_words;
-#endif
-
-#ifdef DEBUG
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 1,
- (void *)block, res, 1);
-#endif
+ dev_dbg(&host->pdev->dev, "pio_read():\n");
+ for (sg = data->sg; sg; sg = sg_next(sg)) {
+ sg_pointer = page_address(sg_page(sg)) + sg->offset;
+
+
+ memcpy(sg_pointer, from_ptr, sg->length);
+ from_ptr += sg->length >> 1;
+
+ data->bytes_xfered += sg->length;
}
+
+ dev_dbg(&host->pdev->dev, "pio_read(): "
+ "complete (no more data).\n");
}
-static int do_pio_write(struct glamo_mci_host *host)
+static void do_pio_write(struct glamo_mci_host *host)
{
- int res = 0;
- volatile u16 __iomem *to_ptr = host->base_data;
- int err = 0;
+ struct scatterlist *sg;
+ u16 __iomem *to_ptr = host->data_base;
+ struct mmc_data *data = host->mrq->data;
+ void *sg_pointer;
dev_dbg(&host->pdev->dev, "pio_write():\n");
- while (!res) {
- res = get_data_buffer(host, &host->pio_words, &host->pio_ptr);
- if (res)
- continue;
+ for (sg = data->sg; sg; sg = sg_next(sg)) {
+ sg_pointer = page_address(sg_page(sg)) + sg->offset;
- dev_dbg(&host->pdev->dev, "pio_write():new source: [%i]@[%p]\n",
- host->pio_words, host->pio_ptr);
+ data->bytes_xfered += sg->length;
- host->pio_count += host->pio_words << 1;
- while (host->pio_words--)
- writew(*host->pio_ptr++, to_ptr++);
+ memcpy(to_ptr, sg_pointer, sg->length);
+ to_ptr += sg->length >> 1;
}
dev_dbg(&host->pdev->dev, "pio_write(): complete\n");
- host->pio_active = XFER_NONE;
- return err;
}
-static void __glamo_mci_fix_card_div(struct glamo_mci_host *host, int div)
+static void glamo_mci_fix_card_div(struct glamo_mci_host *host, int div)
{
unsigned long flags;
- spin_lock_irqsave(&clock_lock, flags);
+ spin_lock_irqsave(&host->pdata->pglamo->lock, flags);
if (div < 0) {
/* stop clock - remove clock from divider input */
- writew(readw(glamo_mci_def_pdata.pglamo->base +
+ writew(readw(host->pdata->pglamo->base +
GLAMO_REG_CLOCK_GEN5_1) & (~GLAMO_CLOCK_GEN51_EN_DIV_TCLK),
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_GEN5_1);
-
- goto done;
+ host->pdata->pglamo->base + GLAMO_REG_CLOCK_GEN5_1);
} else {
- /* set the nearest prescaler factor
- *
- * register shared with SCLK divisor -- no chance of race because
- * we don't use sensor interface
- */
- writew((readw(glamo_mci_def_pdata.pglamo->base +
- GLAMO_REG_CLOCK_GEN8) & 0xff00) | div,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_GEN8);
- /* enable clock to divider input */
- writew(readw(glamo_mci_def_pdata.pglamo->base +
- GLAMO_REG_CLOCK_GEN5_1) | GLAMO_CLOCK_GEN51_EN_DIV_TCLK,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_GEN5_1);
- }
-
- if (host->force_slow_during_powerup)
- div = host->clk_rate / sd_post_power_clock;
- else
- if (host->pdata->glamo_mci_use_slow)
- if ((host->pdata->glamo_mci_use_slow)())
- div = div * sd_slow_ratio;
- if (div > 255)
- div = 255;
+ if (host->force_slow_during_powerup)
+ div = host->clk_rate / sd_post_power_clock;
+ else if (host->pdata->glamo_mci_use_slow &&
+ host->pdata->glamo_mci_use_slow())
+ div = div * sd_slow_ratio;
- /*
- * set the nearest prescaler factor
- *
- * register shared with SCLK divisor -- no chance of race because
- * we don't use sensor interface
- */
- writew((readw(glamo_mci_def_pdata.pglamo->base +
- GLAMO_REG_CLOCK_GEN8) & 0xff00) | div,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_GEN8);
- /* enable clock to divider input */
- writew(readw(glamo_mci_def_pdata.pglamo->base +
- GLAMO_REG_CLOCK_GEN5_1) | GLAMO_CLOCK_GEN51_EN_DIV_TCLK,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_GEN5_1);
-
-done:
- spin_unlock_irqrestore(&clock_lock, flags);
+ if (div > 255)
+ div = 255;
+ /*
+ * set the nearest prescaler factor
+ *
+ * register shared with SCLK divisor -- no chance of race because
+ * we don't use sensor interface
+ */
+ writew((readw(host->pdata->pglamo->base +
+ GLAMO_REG_CLOCK_GEN8) & 0xff00) | div,
+ host->pdata->pglamo->base + GLAMO_REG_CLOCK_GEN8);
+ /* enable clock to divider input */
+ writew(readw(host->pdata->pglamo->base +
+ GLAMO_REG_CLOCK_GEN5_1) | GLAMO_CLOCK_GEN51_EN_DIV_TCLK,
+ host->pdata->pglamo->base + GLAMO_REG_CLOCK_GEN5_1);
+ mdelay(5);
+ }
+ spin_unlock_irqrestore(&host->pdata->pglamo->lock, flags);
}
-static int __glamo_mci_set_card_clock(struct glamo_mci_host *host, int freq,
- int *division)
+static int glamo_mci_set_card_clock(struct glamo_mci_host *host, int freq)
{
int div = 0;
int real_rate = 0;
if (freq) {
/* Set clock */
- for (div = 0; div < 256; div++) {
+ for (div = 0; div < 255; div++) {
real_rate = host->clk_rate / (div + 1);
if (real_rate <= freq)
break;
}
- if (div > 255)
- div = 255;
-
- if (division)
- *division = div;
-
- __glamo_mci_fix_card_div(host, div);
+ host->clk_div = div;
+ glamo_mci_fix_card_div(host, div);
} else {
/* stop clock */
- if (division)
- *division = 0xff;
+ host->clk_div = 0xff;
if (!sd_idleclk && !host->force_slow_during_powerup)
/* clock off */
- __glamo_mci_fix_card_div(host, -1);
+ glamo_mci_fix_card_div(host, -1);
}
-
+ host->real_rate = real_rate;
return real_rate;
}
container_of(work, struct glamo_mci_host, irq_work);
struct mmc_command *cmd = host->mrq->cmd;
- if (host->pio_active == XFER_READ)
+ if (cmd->data->flags & MMC_DATA_READ) {
do_pio_read(host);
-
- host->mrq->data->bytes_xfered = host->pio_count;
- dev_dbg(&host->pdev->dev, "count=%d\n", host->pio_count);
+ }
/* issue STOP if we have been given one to use */
if (host->mrq->stop) {
- host->cmd_is_stop = 1;
- glamo_mci_send_request(host->mmc);
- host->cmd_is_stop = 0;
+ glamo_mci_send_command(host, host->mrq->stop);
}
if (!sd_idleclk && !host->force_slow_during_powerup)
/* clock off */
- __glamo_mci_fix_card_div(host, -1);
+ glamo_mci_fix_card_div(host, -1);
- host->complete_what = COMPLETION_NONE;
host->mrq = NULL;
mmc_request_done(host->mmc, cmd->mrq);
}
-static void glamo_mci_irq_host(struct glamo_mci_host *host)
+static irqreturn_t glamo_mci_irq(int irq, void *devid)
{
+ struct glamo_mci_host *host = (struct glamo_mci_host*)devid;
u16 status;
struct mmc_command *cmd;
- unsigned long iflags;
+ unsigned long flags;
if (host->suspending) { /* bad news, dangerous time */
dev_err(&host->pdev->dev, "****glamo_mci_irq before resumed\n");
- return;
+ goto leave;
}
if (!host->mrq)
- return;
+ goto leave;
cmd = host->mrq->cmd;
if (!cmd)
- return;
+ goto leave;
- spin_lock_irqsave(&host->complete_lock, iflags);
+ spin_lock_irqsave(&host->lock, flags);
- status = readw(host->base + GLAMO_REG_MMC_RB_STAT1);
+ status = readw(host->mmio_base + GLAMO_REG_MMC_RB_STAT1);
dev_dbg(&host->pdev->dev, "status = 0x%04x\n", status);
- /* ack this interrupt source */
- writew(GLAMO_IRQ_MMC,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_IRQ_CLEAR);
-
/* we ignore a data timeout report if we are also told the data came */
if (status & GLAMO_STAT1_MMC_RB_DRDY)
status &= ~GLAMO_STAT1_MMC_DTOUT;
*/
schedule_work(&host->irq_work);
- goto leave;
+ goto unlock;
done:
- host->complete_what = COMPLETION_NONE;
host->mrq = NULL;
mmc_request_done(host->mmc, cmd->mrq);
+unlock:
+ spin_unlock_irqrestore(&host->lock, flags);
leave:
- spin_unlock_irqrestore(&host->complete_lock, iflags);
-}
-
-static void glamo_mci_irq(unsigned int irq, struct irq_desc *desc)
-{
- struct glamo_mci_host *host = (struct glamo_mci_host *)
- desc->handler_data;
-
- if (host)
- glamo_mci_irq_host(host);
-
+ return IRQ_HANDLED;
}
-static int glamo_mci_send_command(struct glamo_mci_host *host,
+static void glamo_mci_send_command(struct glamo_mci_host *host,
struct mmc_command *cmd)
{
u8 u8a[6];
u16 fire = 0;
+ unsigned int timeout = 1000000;
+ u16 * reg_resp = (u16 *)(host->mmio_base + GLAMO_REG_MMC_CMD_RSP1);
+ u16 status;
/* if we can't do it, reject as busy */
- if (!readw(host->base + GLAMO_REG_MMC_RB_STAT1) &
+ if (!readw(host->mmio_base + GLAMO_REG_MMC_RB_STAT1) &
GLAMO_STAT1_MMC_IDLE) {
host->mrq = NULL;
cmd->error = -EBUSY;
mmc_request_done(host->mmc, host->mrq);
- return -EBUSY;
+ return;
}
/* create an array in wire order for CRC computation */
u8a[2] = (u8)(cmd->arg >> 16);
u8a[3] = (u8)(cmd->arg >> 8);
u8a[4] = (u8)cmd->arg;
- u8a[5] = CRC7(&u8a[0], 5); /* CRC7 on first 5 bytes of packet */
+ u8a[5] = (crc7(0, u8a, 5) << 1) | 0x01; /* crc7 on first 5 bytes of packet */
/* issue the wire-order array including CRC in register order */
- writew((u8a[4] << 8) | u8a[5], host->base + GLAMO_REG_MMC_CMD_REG1);
- writew((u8a[2] << 8) | u8a[3], host->base + GLAMO_REG_MMC_CMD_REG2);
- writew((u8a[0] << 8) | u8a[1], host->base + GLAMO_REG_MMC_CMD_REG3);
+ writew((u8a[4] << 8) | u8a[5], host->mmio_base + GLAMO_REG_MMC_CMD_REG1);
+ writew((u8a[2] << 8) | u8a[3], host->mmio_base + GLAMO_REG_MMC_CMD_REG2);
+ writew((u8a[0] << 8) | u8a[1], host->mmio_base + GLAMO_REG_MMC_CMD_REG3);
/* command index toggle */
- fire |= (host->ccnt & 1) << 12;
+ fire |= (host->request_counter & 1) << 12;
/* set type of command */
switch (mmc_cmd_type(cmd)) {
* check pattern, CRC7)
*/
switch (mmc_resp_type(cmd)) {
- case MMC_RSP_R6: /* same index as R7 and R1 */
+ case MMC_RSP_R1: /* same index as R6 and R7 */
fire |= GLAMO_FIRE_MMC_RSPT_R1;
break;
case MMC_RSP_R1B:
fire |= GLAMO_FIRE_MMC_CC_SBR; /* single block read */
break;
case MMC_SWITCH: /* 64 byte payload */
- case 0x33: /* observed issued by MCI */
+ case SD_APP_SEND_SCR:
case MMC_READ_MULTIPLE_BLOCK:
/* we will get an interrupt off this */
if (!cmd->mrq->stop)
/* multiblock with stop */
fire |= GLAMO_FIRE_MMC_CC_MBWS;
else
-// /* multiblock NO stop-- 'RESERVED'? */
+ /* multiblock NO stop-- 'RESERVED'? */
fire |= GLAMO_FIRE_MMC_CC_MBWNS;
break;
case MMC_STOP_TRANSMISSION:
fire |= GLAMO_FIRE_MMC_CC_BASIC; /* "basic command" */
break;
}
-
/* always largest timeout */
- writew(0xfff, host->base + GLAMO_REG_MMC_TIMEOUT);
+ writew(0xfff, host->mmio_base + GLAMO_REG_MMC_TIMEOUT);
/* Generate interrupt on txfer */
- writew((readw(host->base + GLAMO_REG_MMC_BASIC) & 0x3e) |
+ glamo_reg_set_bit_mask(host, GLAMO_REG_MMC_BASIC, ~0x3e,
0x0800 | GLAMO_BASIC_MMC_NO_CLK_RD_WAIT |
- GLAMO_BASIC_MMC_EN_COMPL_INT | (sd_drive << 6),
- host->base + GLAMO_REG_MMC_BASIC);
+ GLAMO_BASIC_MMC_EN_COMPL_INT | (sd_drive << 6));
/* send the command out on the wire */
/* dev_info(&host->pdev->dev, "Using FIRE %04X\n", fire); */
- writew(fire, host->base + GLAMO_REG_MMC_CMD_FIRE);
- cmd->error = 0;
- return 0;
-}
+ writew(fire, host->mmio_base + GLAMO_REG_MMC_CMD_FIRE);
+
+ /* we are deselecting card? because it isn't going to ack then... */
+ if ((cmd->opcode == 7) && (cmd->arg == 0))
+ return;
-static int glamo_mci_prepare_pio(struct glamo_mci_host *host,
- struct mmc_data *data)
-{
/*
- * the S-Media-internal RAM offset for our MMC buffer
- * Read is halfway up the buffer and write is at the start
+ * we must spin until response is ready or timed out
+ * -- we don't get interrupts unless there is a bulk rx
*/
- if (data->flags & MMC_DATA_READ) {
- writew((u16)(GLAMO_FB_SIZE + (RESSIZE(host->mem_data) / 2)),
- host->base + GLAMO_REG_MMC_WDATADS1);
- writew((u16)((GLAMO_FB_SIZE +
- (RESSIZE(host->mem_data) / 2)) >> 16),
- host->base + GLAMO_REG_MMC_WDATADS2);
- } else {
- writew((u16)GLAMO_FB_SIZE, host->base +
- GLAMO_REG_MMC_RDATADS1);
- writew((u16)(GLAMO_FB_SIZE >> 16), host->base +
- GLAMO_REG_MMC_RDATADS2);
+ udelay(5);
+ do
+ status = readw(host->mmio_base + GLAMO_REG_MMC_RB_STAT1);
+ while (((((status >> 15) & 1) != (host->request_counter & 1)) ||
+ (!(status & (GLAMO_STAT1_MMC_RB_RRDY |
+ GLAMO_STAT1_MMC_RTOUT |
+ GLAMO_STAT1_MMC_DTOUT |
+ GLAMO_STAT1_MMC_BWERR |
+ GLAMO_STAT1_MMC_BRERR)))) && (timeout--));
+
+ if ((status & (GLAMO_STAT1_MMC_RTOUT |
+ GLAMO_STAT1_MMC_DTOUT)) ||
+ (timeout == 0)) {
+ cmd->error = -ETIMEDOUT;
+ } else if (status & (GLAMO_STAT1_MMC_BWERR |
+ GLAMO_STAT1_MMC_BRERR)) {
+ cmd->error = -EILSEQ;
+ }
+
+ if (cmd->flags & MMC_RSP_PRESENT) {
+ if (cmd->flags & MMC_RSP_136) {
+ cmd->resp[3] = readw(®_resp[0]) |
+ (readw(®_resp[1]) << 16);
+ cmd->resp[2] = readw(®_resp[2]) |
+ (readw(®_resp[3]) << 16);
+ cmd->resp[1] = readw(®_resp[4]) |
+ (readw(®_resp[5]) << 16);
+ cmd->resp[0] = readw(®_resp[6]) |
+ (readw(®_resp[7]) << 16);
+ } else {
+ cmd->resp[0] = (readw(®_resp[0]) >> 8) |
+ (readw(®_resp[1]) << 8) |
+ ((readw(®_resp[2])) << 24);
+ }
}
+}
+static int glamo_mci_prepare_pio(struct glamo_mci_host *host,
+ struct mmc_data *data)
+{
/* set up the block info */
- writew(data->blksz, host->base + GLAMO_REG_MMC_DATBLKLEN);
- writew(data->blocks, host->base + GLAMO_REG_MMC_DATBLKCNT);
+ writew(data->blksz, host->mmio_base + GLAMO_REG_MMC_DATBLKLEN);
+ writew(data->blocks, host->mmio_base + GLAMO_REG_MMC_DATBLKCNT);
dev_dbg(&host->pdev->dev, "(blksz=%d, count=%d)\n",
data->blksz, data->blocks);
- host->pio_sgptr = 0;
- host->pio_words = 0;
- host->pio_count = 0;
- host->pio_active = 0;
+ data->bytes_xfered = 0;
+
/* if write, prep the write into the shared RAM before the command */
if (data->flags & MMC_DATA_WRITE) {
- host->pio_active = XFER_WRITE;
- return do_pio_write(host);
+ do_pio_write(host);
}
- host->pio_active = XFER_READ;
return 0;
}
{
struct glamo_mci_host *host = mmc_priv(mmc);
struct mmc_request *mrq = host->mrq;
- struct mmc_command *cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd;
- u16 * pu16 = (u16 *)&cmd->resp[0];
- u16 * reg_resp = (u16 *)(host->base + GLAMO_REG_MMC_CMD_RSP1);
- u16 status;
- int n;
+ struct mmc_command *cmd = mrq->cmd;
int timeout = 1000000;
- int insanity_timeout = 1000000;
- if (host->suspending) {
- dev_err(&host->pdev->dev, "IGNORING glamo_mci_send_request while "
- "suspended\n");
- cmd->error = -EIO;
- if (cmd->data)
+ host->request_counter++;
+ /* this guy has data to read/write? */
+ if (cmd->data) {
+ if(glamo_mci_prepare_pio(host, cmd->data)) {
cmd->data->error = -EIO;
- mmc_request_done(mmc, mrq);
- return;
- }
-
- host->ccnt++;
- /*
- * somehow 2.6.24 MCI manages to issue MMC_WRITE_BLOCK *without* the
- * MMC_DATA_WRITE flag, WTF? Work around the madness.
- */
- if (cmd->opcode == MMC_WRITE_BLOCK)
- if (mrq->data)
- mrq->data->flags |= MMC_DATA_WRITE;
-
- /* this guy has data to read/write? */
- if ((!host->cmd_is_stop) && cmd->data) {
- int res;
- host->dcnt++;
- res = glamo_mci_prepare_pio(host, cmd->data);
- if (res) {
- cmd->error = -EIO;
- cmd->data->error = -EIO;
- mmc_request_done(mmc, mrq);
- return;
+ goto done;
}
}
/* resume requested clock rate
* scale it down by sd_slow_ratio if platform requests it
*/
- __glamo_mci_fix_card_div(host, host->clk_div);
-
- if (glamo_mci_send_command(host, cmd))
- goto bail;
+ glamo_mci_fix_card_div(host, host->clk_div);
- /* we are deselecting card? because it isn't going to ack then... */
- if ((cmd->opcode == 7) && (cmd->arg == 0))
- goto done;
+ glamo_mci_send_command(host, cmd);
- /*
- * we must spin until response is ready or timed out
- * -- we don't get interrupts unless there is a bulk rx
- */
- do
- status = readw(host->base + GLAMO_REG_MMC_RB_STAT1);
- while (((((status >> 15) & 1) != (host->ccnt & 1)) ||
- (!(status & (GLAMO_STAT1_MMC_RB_RRDY |
- GLAMO_STAT1_MMC_RTOUT |
- GLAMO_STAT1_MMC_DTOUT |
- GLAMO_STAT1_MMC_BWERR |
- GLAMO_STAT1_MMC_BRERR)))) && (insanity_timeout--));
-
- if (insanity_timeout < 0)
- dev_info(&host->pdev->dev, "command timeout, continuing\n");
-
- if (status & (GLAMO_STAT1_MMC_RTOUT |
- GLAMO_STAT1_MMC_DTOUT))
- cmd->error = -ETIMEDOUT;
- if (status & (GLAMO_STAT1_MMC_BWERR |
- GLAMO_STAT1_MMC_BRERR))
- cmd->error = -EILSEQ;
-
- if (host->cmd_is_stop)
- goto bail;
-
- if (cmd->error) {
- dev_info(&host->pdev->dev, "Error after cmd: 0x%x\n", status);
- goto done;
- }
- /*
- * mangle the response registers in two different exciting
- * undocumented ways discovered by trial and error
- */
- if (mmc_resp_type(cmd) == MMC_RSP_R2)
- /* grab the response */
- for (n = 0; n < 8; n++) /* super mangle power 1 */
- pu16[n ^ 6] = readw(®_resp[n]);
- else
- for (n = 0; n < 3; n++) /* super mangle power 2 */
- pu16[n] = (readw(®_resp[n]) >> 8) |
- (readw(®_resp[n + 1]) << 8);
/*
* if we don't have bulk data to take care of, we're done
*/
- if (!cmd->data)
- goto done;
- if (!(cmd->data->flags & (MMC_DATA_READ | MMC_DATA_WRITE)))
+ if (!cmd->data || cmd->error)
goto done;
/*
* I'm afraid we have to spin on the IRQ status bit and "be
* our own INT# line"
*/
- if (!glamo_mci_def_pdata.pglamo->irq_works) {
+ if (!host->pdata->pglamo->irq_works) {
/*
* we have faith we will get an "interrupt"...
* but something insane like suspend problems can mean
* we spin here forever, so we timeout after a LONG time
*/
- while ((!(readw(glamo_mci_def_pdata.pglamo->base +
+ while ((!(readw(host->pdata->pglamo->base +
GLAMO_REG_IRQ_STATUS) & GLAMO_IRQ_MMC)) &&
- (timeout--))
- ;
+ (timeout--));
if (timeout < 0) {
if (cmd->data->error)
dev_err(&host->pdev->dev, "Payload timeout\n");
goto bail;
}
+ /* ack this interrupt source */
+ writew(GLAMO_IRQ_MMC, host->pdata->pglamo->base +
+ GLAMO_REG_IRQ_CLEAR);
/* yay we are an interrupt controller! -- call the ISR
* it will stop clock to card
*/
- glamo_mci_irq_host(host);
+ glamo_mci_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC), host);
}
- return;
-
+ return;
done:
- host->complete_what = COMPLETION_NONE;
host->mrq = NULL;
mmc_request_done(host->mmc, cmd->mrq);
bail:
if (!sd_idleclk && !host->force_slow_during_powerup)
/* stop the clock to card */
- __glamo_mci_fix_card_div(host, -1);
+ glamo_mci_fix_card_div(host, -1);
}
static void glamo_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct glamo_mci_host *host = mmc_priv(mmc);
- host->cmd_is_stop = 0;
host->mrq = mrq;
glamo_mci_send_request(mmc);
}
-#if 1
-static void glamo_mci_reset(struct glamo_mci_host *host)
-{
- if (host->suspending) {
- dev_err(&host->pdev->dev, "IGNORING glamo_mci_reset while "
- "suspended\n");
- return;
- }
- dev_dbg(&host->pdev->dev, "******* glamo_mci_reset\n");
- /* reset MMC controller */
- writew(GLAMO_CLOCK_MMC_RESET | GLAMO_CLOCK_MMC_DG_TCLK |
- GLAMO_CLOCK_MMC_EN_TCLK | GLAMO_CLOCK_MMC_DG_M9CLK |
- GLAMO_CLOCK_MMC_EN_M9CLK,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_MMC);
- udelay(10);
- /* and disable reset */
- writew(GLAMO_CLOCK_MMC_DG_TCLK |
- GLAMO_CLOCK_MMC_EN_TCLK | GLAMO_CLOCK_MMC_DG_M9CLK |
- GLAMO_CLOCK_MMC_EN_M9CLK,
- glamo_mci_def_pdata.pglamo->base + GLAMO_REG_CLOCK_MMC);
-}
-#endif
-static inline int glamo_mci_get_mv(int vdd)
-{
- int mv = 1650;
-
- if (vdd > 7)
- mv += 350 + 100 * (vdd - 8);
-
- return mv;
-}
-
static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct glamo_mci_host *host = mmc_priv(mmc);
- struct regulator *regulator;
- int n = 0;
- int div;
+ int bus_width = 0;
int powering = 0;
- int mv;
if (host->suspending) {
dev_err(&host->pdev->dev, "IGNORING glamo_mci_set_ios while "
return;
}
- regulator = host->regulator;
-
/* Set power */
switch(ios->power_mode) {
case MMC_POWER_UP:
- if (host->pdata->glamo_can_set_mci_power()) {
- mv = glamo_mci_get_mv(ios->vdd);
- regulator_set_voltage(regulator, mv * 1000, mv * 1000);
- regulator_enable(regulator);
- }
+ mmc_regulator_set_ocr(host->regulator, ios->vdd);
+ host->vdd_current = ios->vdd;
break;
case MMC_POWER_ON:
/*
host->force_slow_during_powerup = 1;
if (host->vdd_current != ios->vdd) {
- if (host->pdata->glamo_can_set_mci_power()) {
- mv = glamo_mci_get_mv(ios->vdd);
- regulator_set_voltage(regulator, mv * 1000, mv * 1000);
- printk(KERN_INFO "SD power -> %dmV\n", mv);
- }
+ mmc_regulator_set_ocr(host->regulator, ios->vdd);
host->vdd_current = ios->vdd;
}
if (host->power_mode_current == MMC_POWER_OFF) {
- glamo_engine_enable(glamo_mci_def_pdata.pglamo,
+ glamo_engine_enable(host->pdata->pglamo,
GLAMO_ENGINE_MMC);
powering = 1;
}
if (host->power_mode_current == MMC_POWER_OFF)
break;
/* never want clocking with dead card */
- __glamo_mci_fix_card_div(host, -1);
+ glamo_mci_fix_card_div(host, -1);
- glamo_engine_disable(glamo_mci_def_pdata.pglamo,
+ glamo_engine_disable(host->pdata->pglamo,
GLAMO_ENGINE_MMC);
- regulator_disable(regulator);
+
+ mmc_regulator_set_ocr(host->regulator, 0);
host->vdd_current = -1;
break;
}
host->power_mode_current = ios->power_mode;
- host->real_rate = __glamo_mci_set_card_clock(host, ios->clock, &div);
- host->clk_div = div;
+ glamo_mci_set_card_clock(host, ios->clock);
/* after power-up, we are meant to give it >= 74 clocks so it can
* initialize itself. Doubt any modern cards need it but anyway...
if (!sd_idleclk && !host->force_slow_during_powerup)
/* stop the clock to card, because we are idle until transfer */
- __glamo_mci_fix_card_div(host, -1);
+ glamo_mci_fix_card_div(host, -1);
if ((ios->power_mode == MMC_POWER_ON) ||
(ios->power_mode == MMC_POWER_UP)) {
dev_info(&host->pdev->dev, "glamo_mci_set_ios: power down.\n");
/* set bus width */
- host->bus_width = ios->bus_width;
- if (host->bus_width == MMC_BUS_WIDTH_4)
- n = GLAMO_BASIC_MMC_EN_4BIT_DATA;
- writew((readw(host->base + GLAMO_REG_MMC_BASIC) &
- (~(GLAMO_BASIC_MMC_EN_4BIT_DATA |
- GLAMO_BASIC_MMC_EN_DR_STR0 |
- GLAMO_BASIC_MMC_EN_DR_STR1))) | n |
- sd_drive << 6, host->base + GLAMO_REG_MMC_BASIC);
+ if (ios->bus_width == MMC_BUS_WIDTH_4)
+ bus_width = GLAMO_BASIC_MMC_EN_4BIT_DATA;
+ glamo_reg_set_bit_mask(host, GLAMO_REG_MMC_BASIC,
+ GLAMO_BASIC_MMC_EN_4BIT_DATA |
+ GLAMO_BASIC_MMC_EN_DR_STR0 |
+ GLAMO_BASIC_MMC_EN_DR_STR1,
+ bus_width | sd_drive << 6);
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->pdev = pdev;
- host->pdata = &glamo_mci_def_pdata;
+ host->pdata = pdev->dev.platform_data;
host->power_mode_current = MMC_POWER_OFF;
- host->complete_what = COMPLETION_NONE;
- host->pio_active = XFER_NONE;
-
- spin_lock_init(&host->complete_lock);
+ spin_lock_init(&host->lock);
INIT_WORK(&host->irq_work, glamo_mci_irq_worker);
- host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!host->mem) {
+ host->regulator = regulator_get(&pdev->dev, "SD_3V3");
+ if (!host->regulator) {
+ dev_err(&pdev->dev, "Cannot proceed without regulator.\n");
+ ret = -ENODEV;
+ goto probe_free_host;
+ }
+
+ host->mmio_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!host->mmio_mem) {
dev_err(&pdev->dev,
"failed to get io memory region resouce.\n");
-
ret = -ENOENT;
- goto probe_free_host;
+ goto probe_regulator_put;
}
- host->mem = request_mem_region(host->mem->start,
- RESSIZE(host->mem), pdev->name);
+ host->mmio_mem = request_mem_region(host->mmio_mem->start,
+ resource_size(host->mmio_mem),
+ pdev->name);
- if (!host->mem) {
+ if (!host->mmio_mem) {
dev_err(&pdev->dev, "failed to request io memory region.\n");
ret = -ENOENT;
- goto probe_free_host;
+ goto probe_regulator_put;
}
- host->base = ioremap(host->mem->start, RESSIZE(host->mem));
- if (!host->base) {
+ host->mmio_base = ioremap(host->mmio_mem->start,
+ resource_size(host->mmio_mem));
+ if (!host->mmio_base) {
dev_err(&pdev->dev, "failed to ioremap() io memory region.\n");
ret = -EINVAL;
- goto probe_free_mem_region;
- }
-
- host->regulator = regulator_get(&pdev->dev, "SD_3V3");
- if (!host->regulator) {
- dev_err(&pdev->dev, "Cannot proceed without regulator.\n");
- return -ENODEV;
+ goto probe_free_mem_region_mmio;
}
- /* set the handler for our bit of the shared chip irq register */
- set_irq_handler(IRQ_GLAMO(GLAMO_IRQIDX_MMC), glamo_mci_irq);
- /* stash host as our handler's private data */
- set_irq_data(IRQ_GLAMO(GLAMO_IRQIDX_MMC), host);
/* Get ahold of our data buffer we use for data in and out on MMC */
- host->mem_data = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!host->mem_data) {
+ host->data_mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!host->data_mem) {
dev_err(&pdev->dev,
"failed to get io memory region resource.\n");
ret = -ENOENT;
- goto probe_iounmap;
+ goto probe_iounmap_mmio;
}
- host->mem_data = request_mem_region(host->mem_data->start,
- RESSIZE(host->mem_data), pdev->name);
+ host->data_mem = request_mem_region(host->data_mem->start,
+ resource_size(host->data_mem),
+ pdev->name);
- if (!host->mem_data) {
+ if (!host->data_mem) {
dev_err(&pdev->dev, "failed to request io memory region.\n");
ret = -ENOENT;
- goto probe_iounmap;
+ goto probe_iounmap_mmio;
}
- host->base_data = ioremap(host->mem_data->start,
- RESSIZE(host->mem_data));
- host->data_max_size = RESSIZE(host->mem_data);
+ host->data_base = ioremap(host->data_mem->start,
+ resource_size(host->data_mem));
- if (host->base_data == 0) {
+ if (host->data_base == 0) {
dev_err(&pdev->dev, "failed to ioremap() io memory region.\n");
ret = -EINVAL;
goto probe_free_mem_region_data;
}
- host->vdd_current = 0;
+ ret = request_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC), glamo_mci_irq, IRQF_SHARED,
+ pdev->name, host);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register irq.\n");
+ goto probe_iounmap_data;
+ }
+
+
+ host->vdd_current = -1;
host->clk_rate = 50000000; /* really it's 49152000 */
host->clk_div = 16;
/* explain our host controller capabilities */
- mmc->ops = &glamo_mci_ops;
- mmc->ocr_avail = host->pdata->ocr_avail;
- mmc->caps = MMC_CAP_4_BIT_DATA |
- MMC_CAP_MMC_HIGHSPEED |
- MMC_CAP_SD_HIGHSPEED;
- mmc->f_min = host->clk_rate / 256;
- mmc->f_max = sd_max_clk;
-
- mmc->max_blk_count = (1 << 16) - 1; /* GLAMO_REG_MMC_RB_BLKCNT */
- mmc->max_blk_size = (1 << 12) - 1; /* GLAMO_REG_MMC_RB_BLKLEN */
- mmc->max_req_size = RESSIZE(host->mem_data) / 2;
- mmc->max_seg_size = mmc->max_req_size;
- mmc->max_phys_segs = 1; /* hw doesn't talk about segs??? */
- mmc->max_hw_segs = 1;
-
- dev_info(&host->pdev->dev, "probe: mapped mci_base:%p irq:%u.\n",
- host->base, host->irq);
+ mmc->ops = &glamo_mci_ops;
+ mmc->ocr_avail = mmc_regulator_get_ocrmask(host->regulator);
+ mmc->caps = MMC_CAP_4_BIT_DATA |
+ MMC_CAP_MMC_HIGHSPEED |
+ MMC_CAP_SD_HIGHSPEED;
+ mmc->f_min = host->clk_rate / 256;
+ mmc->f_max = sd_max_clk;
+
+ mmc->max_blk_count = (1 << 16) - 1; /* GLAMO_REG_MMC_RB_BLKCNT */
+ mmc->max_blk_size = (1 << 12) - 1; /* GLAMO_REG_MMC_RB_BLKLEN */
+ mmc->max_req_size = resource_size(host->data_mem);
+ mmc->max_seg_size = mmc->max_req_size;
+ mmc->max_phys_segs = 128;
+ mmc->max_hw_segs = 128;
platform_set_drvdata(pdev, mmc);
- glamo_engine_enable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC);
- glamo_mci_reset(host);
+ glamo_engine_enable(host->pdata->pglamo, GLAMO_ENGINE_MMC);
+ glamo_engine_reset(host->pdata->pglamo, GLAMO_ENGINE_MMC);
if ((ret = mmc_add_host(mmc))) {
dev_err(&pdev->dev, "failed to add mmc host.\n");
- goto probe_free_mem_region_data;
+ goto probe_freeirq;
}
- dev_info(&pdev->dev,"initialisation done.\n");
- return 0;
-
- probe_free_mem_region_data:
- release_mem_region(host->mem_data->start, RESSIZE(host->mem_data));
+ writew((u16)(host->data_mem->start),
+ host->mmio_base + GLAMO_REG_MMC_WDATADS1);
+ writew((u16)((host->data_mem->start) >> 16),
+ host->mmio_base + GLAMO_REG_MMC_WDATADS2);
- probe_iounmap:
- iounmap(host->base);
+ writew((u16)host->data_mem->start, host->mmio_base +
+ GLAMO_REG_MMC_RDATADS1);
+ writew((u16)(host->data_mem->start >> 16), host->mmio_base +
+ GLAMO_REG_MMC_RDATADS2);
- probe_free_mem_region:
- release_mem_region(host->mem->start, RESSIZE(host->mem));
+ dev_info(&pdev->dev,"initialisation done.\n");
+ return 0;
- probe_free_host:
+probe_freeirq:
+ free_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC), host);
+probe_iounmap_data:
+ iounmap(host->data_base);
+probe_free_mem_region_data:
+ release_mem_region(host->data_mem->start, resource_size(host->data_mem));
+probe_iounmap_mmio:
+ iounmap(host->mmio_base);
+probe_free_mem_region_mmio:
+ release_mem_region(host->mmio_mem->start, resource_size(host->mmio_mem));
+probe_regulator_put:
+ regulator_put(host->regulator);
+probe_free_host:
mmc_free_host(mmc);
- probe_out:
+probe_out:
return ret;
}
static int glamo_mci_remove(struct platform_device *pdev)
{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct glamo_mci_host *host = mmc_priv(mmc);
- struct regulator *regulator;
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct glamo_mci_host *host = mmc_priv(mmc);
+
+ free_irq(IRQ_GLAMO(GLAMO_IRQIDX_MMC), host);
mmc_remove_host(mmc);
- /* stop using our handler, revert it to default */
- set_irq_handler(IRQ_GLAMO(GLAMO_IRQIDX_MMC), handle_level_irq);
- iounmap(host->base);
- iounmap(host->base_data);
- release_mem_region(host->mem->start, RESSIZE(host->mem));
- release_mem_region(host->mem_data->start, RESSIZE(host->mem_data));
-
- regulator = host->regulator;
- regulator_put(regulator);
-
+ iounmap(host->mmio_base);
+ iounmap(host->data_base);
+ release_mem_region(host->mmio_mem->start, resource_size(host->mmio_mem));
+ release_mem_region(host->data_mem->start, resource_size(host->data_mem));
+
+ regulator_put(host->regulator);
+
mmc_free_host(mmc);
- glamo_engine_disable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC);
+ glamo_engine_disable(host->pdata->pglamo, GLAMO_ENGINE_MMC);
return 0;
}
* make sure the clock was running during suspend and consequently
* resume
*/
- __glamo_mci_fix_card_div(host, host->clk_div);
+ glamo_mci_fix_card_div(host, host->clk_div);
/* we are going to do more commands to override this in
* mmc_suspend_host(), so we need to change sd_idleclk for the
ret = mmc_suspend_host(mmc, state);
host->suspending++;
- /* so that when we resume, we use any modified max rate */
- mmc->f_max = sd_max_clk;
return ret;
}
sd_idleclk = 1;
glamo_engine_enable(host->pdata->pglamo, GLAMO_ENGINE_MMC);
- glamo_mci_reset(host);
+ glamo_engine_reset(host->pdata->pglamo, GLAMO_ENGINE_MMC);
host->suspending--;
static int __init glamo_mci_init(void)
{
- spin_lock_init(&clock_lock);
platform_driver_register(&glamo_mci_driver);
return 0;
}
projects / openwrt / staging / robimarko.git / commitdiff