#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/ioport.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include "wbsd.h"
#define DRIVER_NAME "wbsd"
-#define DRIVER_VERSION "1.2"
+#define DRIVER_VERSION "1.5"
#ifdef CONFIG_MMC_DEBUG
#define DBG(x...) \
#define DBGF(x...) do { } while (0)
#endif
-#ifdef CONFIG_MMC_DEBUG
-void DBG_REG(int reg, u8 value)
-{
- int i;
-
- printk(KERN_DEBUG "wbsd: Register %d: 0x%02X %3d '%c' ",
- reg, (int)value, (int)value, (value < 0x20)?'.':value);
-
- for (i = 7;i >= 0;i--)
- {
- if (value & (1 << i))
- printk("x");
- else
- printk(".");
- }
-
- printk("\n");
-}
-#else
-#define DBG_REG(r, v) do {} while (0)
-#endif
-
/*
* Device resources
*/
#endif /* CONFIG_PNP */
+static const int config_ports[] = { 0x2E, 0x4E };
+static const int unlock_codes[] = { 0x83, 0x87 };
+
+static const int valid_ids[] = {
+ 0x7112,
+ };
+
#ifdef CONFIG_PNP
static unsigned int nopnp = 0;
#else
static inline void wbsd_unlock_config(struct wbsd_host* host)
{
BUG_ON(host->config == 0);
-
+
outb(host->unlock_code, host->config);
outb(host->unlock_code, host->config);
}
static inline void wbsd_lock_config(struct wbsd_host* host)
{
BUG_ON(host->config == 0);
-
+
outb(LOCK_CODE, host->config);
}
static inline void wbsd_write_config(struct wbsd_host* host, u8 reg, u8 value)
{
BUG_ON(host->config == 0);
-
+
outb(reg, host->config);
outb(value, host->config + 1);
}
static inline u8 wbsd_read_config(struct wbsd_host* host, u8 reg)
{
BUG_ON(host->config == 0);
-
+
outb(reg, host->config);
return inb(host->config + 1);
}
static void wbsd_init_device(struct wbsd_host* host)
{
u8 setup, ier;
-
+
/*
* Reset chip (SD/MMC part) and fifo.
*/
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
-
+
/*
* Set DAT3 to input
*/
setup &= ~WBSD_DAT3_H;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
host->flags &= ~WBSD_FIGNORE_DETECT;
-
+
/*
* Read back default clock.
*/
* Power down port.
*/
outb(WBSD_POWER_N, host->base + WBSD_CSR);
-
+
/*
* Set maximum timeout.
*/
wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F);
-
+
/*
* Test for card presence
*/
host->flags |= WBSD_FCARD_PRESENT;
else
host->flags &= ~WBSD_FCARD_PRESENT;
-
+
/*
* Enable interesting interrupts.
*/
static void wbsd_reset(struct wbsd_host* host)
{
u8 setup;
-
- printk(KERN_ERR DRIVER_NAME ": Resetting chip\n");
-
+
+ printk(KERN_ERR "%s: Resetting chip\n", mmc_hostname(host->mmc));
+
/*
* Soft reset of chip (SD/MMC part).
*/
static void wbsd_request_end(struct wbsd_host* host, struct mmc_request* mrq)
{
unsigned long dmaflags;
-
+
DBGF("Ending request, cmd (%x)\n", mrq->cmd->opcode);
-
+
if (host->dma >= 0)
{
/*
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
}
-
+
host->mrq = NULL;
/*
host->offset = 0;
host->remain = host->cur_sg->length;
}
-
+
return host->num_sg;
}
struct scatterlist* sg;
char* dmabuf = host->dma_buffer;
char* sgbuf;
-
+
size = host->size;
-
+
sg = data->sg;
len = data->sg_len;
-
+
/*
* Just loop through all entries. Size might not
* be the entire list though so make sure that
memcpy(dmabuf, sgbuf, sg[i].length);
kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ);
dmabuf += sg[i].length;
-
+
if (size < sg[i].length)
size = 0;
else
size -= sg[i].length;
-
+
if (size == 0)
break;
}
-
+
/*
* Check that we didn't get a request to transfer
* more data than can fit into the SG list.
*/
-
+
BUG_ON(size != 0);
-
+
host->size -= size;
}
struct scatterlist* sg;
char* dmabuf = host->dma_buffer;
char* sgbuf;
-
+
size = host->size;
-
+
sg = data->sg;
len = data->sg_len;
-
+
/*
* Just loop through all entries. Size might not
* be the entire list though so make sure that
memcpy(sgbuf, dmabuf, sg[i].length);
kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ);
dmabuf += sg[i].length;
-
+
if (size < sg[i].length)
size = 0;
else
size -= sg[i].length;
-
+
if (size == 0)
break;
}
-
+
/*
* Check that we didn't get a request to transfer
* more data than can fit into the SG list.
*/
-
+
BUG_ON(size != 0);
-
+
host->size -= size;
}
/*
* Command handling
*/
-
+
static inline void wbsd_get_short_reply(struct wbsd_host* host,
struct mmc_command* cmd)
{
cmd->error = MMC_ERR_INVALID;
return;
}
-
+
cmd->resp[0] =
wbsd_read_index(host, WBSD_IDX_RESP12) << 24;
cmd->resp[0] |=
struct mmc_command* cmd)
{
int i;
-
+
/*
* Correct response type?
*/
cmd->error = MMC_ERR_INVALID;
return;
}
-
+
for (i = 0;i < 4;i++)
{
cmd->resp[i] =
{
int i;
u8 status, isr;
-
+
DBGF("Sending cmd (%x)\n", cmd->opcode);
/*
* transfer.
*/
host->isr = 0;
-
+
/*
* Send the command (CRC calculated by host).
*/
outb(cmd->opcode, host->base + WBSD_CMDR);
for (i = 3;i >= 0;i--)
outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR);
-
+
cmd->error = MMC_ERR_NONE;
-
+
/*
* Wait for the request to complete.
*/
* Read back status.
*/
isr = host->isr;
-
+
/* Card removed? */
if (isr & WBSD_INT_CARD)
cmd->error = MMC_ERR_TIMEOUT;
struct mmc_data* data = host->mrq->cmd->data;
char* buffer;
int i, fsr, fifo;
-
+
/*
* Handle excessive data.
*/
if (data->bytes_xfered == host->size)
return;
-
+
buffer = wbsd_kmap_sg(host) + host->offset;
/*
/*
* The size field in the FSR is broken so we have to
* do some guessing.
- */
+ */
if (fsr & WBSD_FIFO_FULL)
fifo = 16;
else if (fsr & WBSD_FIFO_FUTHRE)
fifo = 8;
else
fifo = 1;
-
+
for (i = 0;i < fifo;i++)
{
*buffer = inb(host->base + WBSD_DFR);
host->remain--;
data->bytes_xfered++;
-
+
/*
* Transfer done?
*/
if (data->bytes_xfered == host->size)
{
- wbsd_kunmap_sg(host);
+ wbsd_kunmap_sg(host);
return;
}
-
+
/*
* End of scatter list entry?
*/
if (host->remain == 0)
{
wbsd_kunmap_sg(host);
-
+
/*
* Get next entry. Check if last.
*/
* into the scatter list.
*/
BUG_ON(1);
-
+
host->size = data->bytes_xfered;
-
+
return;
}
-
+
buffer = wbsd_kmap_sg(host);
}
}
}
-
+
wbsd_kunmap_sg(host);
/*
struct mmc_data* data = host->mrq->cmd->data;
char* buffer;
int i, fsr, fifo;
-
+
/*
* Check that we aren't being called after the
* entire buffer has been transfered.
/*
* The size field in the FSR is broken so we have to
* do some guessing.
- */
+ */
if (fsr & WBSD_FIFO_EMPTY)
fifo = 0;
else if (fsr & WBSD_FIFO_EMTHRE)
buffer++;
host->offset++;
host->remain--;
-
+
data->bytes_xfered++;
-
+
/*
* Transfer done?
*/
if (host->remain == 0)
{
wbsd_kunmap_sg(host);
-
+
/*
* Get next entry. Check if last.
*/
* into the scatter list.
*/
BUG_ON(1);
-
+
host->size = data->bytes_xfered;
-
+
return;
}
-
+
buffer = wbsd_kmap_sg(host);
}
}
}
-
+
wbsd_kunmap_sg(host);
-
+
/*
* The controller stops sending interrupts for
* 'FIFO empty' under certain conditions. So we
1 << data->blksz_bits, data->blocks, data->flags);
DBGF("tsac %d ms nsac %d clk\n",
data->timeout_ns / 1000000, data->timeout_clks);
-
+
/*
* Calculate size.
*/
wbsd_write_index(host, WBSD_IDX_TAAC, 127);
else
wbsd_write_index(host, WBSD_IDX_TAAC, data->timeout_ns/1000000);
-
+
if (data->timeout_clks > 255)
wbsd_write_index(host, WBSD_IDX_NSAC, 255);
else
wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks);
-
+
/*
* Inform the chip of how large blocks will be
* sent. It needs this to determine when to
* calculate CRC.
*
* Space for CRC must be included in the size.
+ * Two bytes are needed for each data line.
*/
- blksize = (1 << data->blksz_bits) + 2;
-
- wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0);
- wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
+ if (host->bus_width == MMC_BUS_WIDTH_1)
+ {
+ blksize = (1 << data->blksz_bits) + 2;
+
+ wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0);
+ wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
+ }
+ else if (host->bus_width == MMC_BUS_WIDTH_4)
+ {
+ blksize = (1 << data->blksz_bits) + 2 * 4;
+
+ wbsd_write_index(host, WBSD_IDX_PBSMSB, ((blksize >> 4) & 0xF0)
+ | WBSD_DATA_WIDTH);
+ wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
+ }
+ else
+ {
+ data->error = MMC_ERR_INVALID;
+ return;
+ }
/*
* Clear the FIFO. This is needed even for DMA
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
setup |= WBSD_FIFO_RESET;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
-
+
/*
* DMA transfer?
*/
if (host->dma >= 0)
- {
+ {
/*
* The buffer for DMA is only 64 kB.
*/
data->error = MMC_ERR_INVALID;
return;
}
-
+
/*
* Transfer data from the SG list to
* the DMA buffer.
*/
if (data->flags & MMC_DATA_WRITE)
wbsd_sg_to_dma(host, data);
-
+
/*
* Initialise the ISA DMA controller.
- */
+ */
dmaflags = claim_dma_lock();
disable_dma(host->dma);
clear_dma_ff(host->dma);
* output to a minimum.
*/
host->firsterr = 1;
-
+
/*
* Initialise the SG list.
*/
wbsd_init_sg(host, data);
-
+
/*
* Turn off DMA.
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
-
+
/*
* Set up FIFO threshold levels (and fill
* buffer if doing a write).
WBSD_FIFOEN_EMPTY | 8);
wbsd_fill_fifo(host);
}
- }
-
+ }
+
data->error = MMC_ERR_NONE;
}
unsigned long dmaflags;
int count;
u8 status;
-
+
WARN_ON(host->mrq == NULL);
/*
{
status = wbsd_read_index(host, WBSD_IDX_STATUS);
} while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE));
-
+
/*
* DMA transfer?
*/
* Disable DMA on the host.
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
-
+
/*
* Turn of ISA DMA controller.
*/
clear_dma_ff(host->dma);
count = get_dma_residue(host->dma);
release_dma_lock(dmaflags);
-
+
/*
* Any leftover data?
*/
if (count)
{
- printk(KERN_ERR DRIVER_NAME ": Incomplete DMA "
- "transfer. %d bytes left.\n", count);
-
+ printk(KERN_ERR "%s: Incomplete DMA transfer. "
+ "%d bytes left.\n",
+ mmc_hostname(host->mmc), count);
+
data->error = MMC_ERR_FAILED;
}
else
*/
if (data->flags & MMC_DATA_READ)
wbsd_dma_to_sg(host, data);
-
+
data->bytes_xfered = host->size;
}
}
-
+
DBGF("Ending data transfer (%d bytes)\n", data->bytes_xfered);
-
+
wbsd_request_end(host, host->mrq);
}
cmd = mrq->cmd;
host->mrq = mrq;
-
+
/*
* If there is no card in the slot then
* timeout immediatly.
if (cmd->data)
{
wbsd_prepare_data(host, cmd->data);
-
+
if (cmd->data->error != MMC_ERR_NONE)
goto done;
}
-
+
wbsd_send_command(host, cmd);
/*
* If this is a data transfer the request
* will be finished after the data has
* transfered.
- */
+ */
if (cmd->data && (cmd->error == MMC_ERR_NONE))
{
/*
return;
}
-
+
done:
wbsd_request_end(host, mrq);
{
struct wbsd_host* host = mmc_priv(mmc);
u8 clk, setup, pwr;
-
- DBGF("clock %uHz busmode %u powermode %u Vdd %u\n",
- ios->clock, ios->bus_mode, ios->power_mode, ios->vdd);
+
+ DBGF("clock %uHz busmode %u powermode %u cs %u Vdd %u width %u\n",
+ ios->clock, ios->bus_mode, ios->power_mode, ios->chip_select,
+ ios->vdd, ios->bus_width);
spin_lock_bh(&host->lock);
*/
if (ios->power_mode == MMC_POWER_OFF)
wbsd_init_device(host);
-
+
if (ios->clock >= 24000000)
clk = WBSD_CLK_24M;
else if (ios->clock >= 16000000)
/*
* MMC cards need to have pin 1 high during init.
- * Init time corresponds rather nicely with the bus mode.
* It wreaks havoc with the card detection though so
- * that needs to be disabed.
+ * that needs to be disabled.
*/
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
- if ((ios->power_mode == MMC_POWER_ON) &&
- (ios->bus_mode == MMC_BUSMODE_OPENDRAIN))
+ if (ios->chip_select == MMC_CS_HIGH)
{
+ BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1);
setup |= WBSD_DAT3_H;
host->flags |= WBSD_FIGNORE_DETECT;
}
else
{
- setup &= ~WBSD_DAT3_H;
- host->flags &= ~WBSD_FIGNORE_DETECT;
+ if (setup & WBSD_DAT3_H)
+ {
+ setup &= ~WBSD_DAT3_H;
+
+ /*
+ * We cannot resume card detection immediatly
+ * because of capacitance and delays in the chip.
+ */
+ mod_timer(&host->ignore_timer, jiffies + HZ/100);
+ }
}
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
-
+
+ /*
+ * Store bus width for later. Will be used when
+ * setting up the data transfer.
+ */
+ host->bus_width = ios->bus_width;
+
+ spin_unlock_bh(&host->lock);
+}
+
+static int wbsd_get_ro(struct mmc_host* mmc)
+{
+ struct wbsd_host* host = mmc_priv(mmc);
+ u8 csr;
+
+ spin_lock_bh(&host->lock);
+
+ csr = inb(host->base + WBSD_CSR);
+ csr |= WBSD_MSLED;
+ outb(csr, host->base + WBSD_CSR);
+
+ mdelay(1);
+
+ csr = inb(host->base + WBSD_CSR);
+ csr &= ~WBSD_MSLED;
+ outb(csr, host->base + WBSD_CSR);
+
spin_unlock_bh(&host->lock);
+
+ return csr & WBSD_WRPT;
}
static struct mmc_host_ops wbsd_ops = {
.request = wbsd_request,
.set_ios = wbsd_set_ios,
+ .get_ro = wbsd_get_ro,
};
/*****************************************************************************\
\*****************************************************************************/
/*
- * Helper function for card detection
+ * Helper function to reset detection ignore
*/
-static void wbsd_detect_card(unsigned long data)
+
+static void wbsd_reset_ignore(unsigned long data)
{
struct wbsd_host *host = (struct wbsd_host*)data;
-
+
BUG_ON(host == NULL);
-
- DBG("Executing card detection\n");
-
- mmc_detect_change(host->mmc);
+
+ DBG("Resetting card detection ignore\n");
+
+ spin_lock_bh(&host->lock);
+
+ host->flags &= ~WBSD_FIGNORE_DETECT;
+
+ /*
+ * Card status might have changed during the
+ * blackout.
+ */
+ tasklet_schedule(&host->card_tasklet);
+
+ spin_unlock_bh(&host->lock);
}
/*
* Tasklets
*/
-inline static struct mmc_data* wbsd_get_data(struct wbsd_host* host)
+static inline struct mmc_data* wbsd_get_data(struct wbsd_host* host)
{
WARN_ON(!host->mrq);
if (!host->mrq)
WARN_ON(!host->mrq->cmd->data);
if (!host->mrq->cmd->data)
return NULL;
-
+
return host->mrq->cmd->data;
}
{
struct wbsd_host* host = (struct wbsd_host*)param;
u8 csr;
-
+ int delay = -1;
+
spin_lock(&host->lock);
-
+
if (host->flags & WBSD_FIGNORE_DETECT)
{
spin_unlock(&host->lock);
return;
}
-
+
csr = inb(host->base + WBSD_CSR);
WARN_ON(csr == 0xff);
-
+
if (csr & WBSD_CARDPRESENT)
{
if (!(host->flags & WBSD_FCARD_PRESENT))
{
DBG("Card inserted\n");
host->flags |= WBSD_FCARD_PRESENT;
-
- /*
- * Delay card detection to allow electrical connections
- * to stabilise.
- */
- mod_timer(&host->timer, jiffies + HZ/2);
+
+ delay = 500;
}
-
- spin_unlock(&host->lock);
}
else if (host->flags & WBSD_FCARD_PRESENT)
{
DBG("Card removed\n");
host->flags &= ~WBSD_FCARD_PRESENT;
-
+
if (host->mrq)
{
- printk(KERN_ERR DRIVER_NAME
- ": Card removed during transfer!\n");
+ printk(KERN_ERR "%s: Card removed during transfer!\n",
+ mmc_hostname(host->mmc));
wbsd_reset(host);
-
+
host->mrq->cmd->error = MMC_ERR_FAILED;
tasklet_schedule(&host->finish_tasklet);
}
-
- /*
- * Unlock first since we might get a call back.
- */
- spin_unlock(&host->lock);
- mmc_detect_change(host->mmc);
+ delay = 0;
}
+
+ /*
+ * Unlock first since we might get a call back.
+ */
+
+ spin_unlock(&host->lock);
+
+ if (delay != -1)
+ mmc_detect_change(host->mmc, msecs_to_jiffies(delay));
}
static void wbsd_tasklet_fifo(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
-
+
spin_lock(&host->lock);
-
+
if (!host->mrq)
goto end;
-
+
data = wbsd_get_data(host);
if (!data)
goto end;
tasklet_schedule(&host->finish_tasklet);
}
-end:
+end:
spin_unlock(&host->lock);
}
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
-
+
spin_lock(&host->lock);
-
+
if (!host->mrq)
goto end;
-
+
data = wbsd_get_data(host);
if (!data)
goto end;
-
+
DBGF("CRC error\n");
data->error = MMC_ERR_BADCRC;
-
+
tasklet_schedule(&host->finish_tasklet);
-end:
+end:
spin_unlock(&host->lock);
}
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
-
+
spin_lock(&host->lock);
-
+
if (!host->mrq)
goto end;
-
+
data = wbsd_get_data(host);
if (!data)
goto end;
-
+
DBGF("Timeout\n");
data->error = MMC_ERR_TIMEOUT;
-
+
tasklet_schedule(&host->finish_tasklet);
-end:
+end:
spin_unlock(&host->lock);
}
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
-
+
spin_lock(&host->lock);
-
+
WARN_ON(!host->mrq);
if (!host->mrq)
goto end;
-
+
data = wbsd_get_data(host);
if (!data)
goto end;
wbsd_finish_data(host, data);
-
-end:
+
+end:
spin_unlock(&host->lock);
}
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
-
+
spin_lock(&host->lock);
if ((wbsd_read_index(host, WBSD_IDX_CRCSTATUS) & WBSD_CRC_MASK) !=
data = wbsd_get_data(host);
if (!data)
goto end;
-
+
DBGF("CRC error\n");
data->error = MMC_ERR_BADCRC;
-
+
tasklet_schedule(&host->finish_tasklet);
}
-end:
+end:
spin_unlock(&host->lock);
}
{
struct wbsd_host* host = dev_id;
int isr;
-
+
isr = inb(host->base + WBSD_ISR);
/*
*/
if (isr == 0xff || isr == 0x00)
return IRQ_NONE;
-
+
host->isr |= isr;
/*
tasklet_hi_schedule(&host->block_tasklet);
if (isr & WBSD_INT_TC)
tasklet_schedule(&host->finish_tasklet);
-
+
return IRQ_HANDLED;
}
{
struct mmc_host* mmc;
struct wbsd_host* host;
-
+
/*
* Allocate MMC structure.
*/
mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev);
if (!mmc)
return -ENOMEM;
-
+
host = mmc_priv(mmc);
host->mmc = mmc;
mmc->f_min = 375000;
mmc->f_max = 24000000;
mmc->ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34;
-
+ mmc->caps = MMC_CAP_4_BIT_DATA;
+
spin_lock_init(&host->lock);
-
+
/*
- * Set up detection timer
+ * Set up timers
*/
- init_timer(&host->timer);
- host->timer.data = (unsigned long)host;
- host->timer.function = wbsd_detect_card;
-
+ init_timer(&host->ignore_timer);
+ host->ignore_timer.data = (unsigned long)host;
+ host->ignore_timer.function = wbsd_reset_ignore;
+
/*
* Maximum number of segments. Worst case is one sector per segment
* so this will be 64kB/512.
*/
mmc->max_hw_segs = 128;
mmc->max_phys_segs = 128;
-
+
/*
* Maximum number of sectors in one transfer. Also limited by 64kB
* buffer.
*/
mmc->max_sectors = 128;
-
+
/*
* Maximum segment size. Could be one segment with the maximum number
* of segments.
*/
mmc->max_seg_size = mmc->max_sectors * 512;
-
+
dev_set_drvdata(dev, mmc);
-
+
return 0;
}
{
struct mmc_host* mmc;
struct wbsd_host* host;
-
+
mmc = dev_get_drvdata(dev);
if (!mmc)
return;
-
+
host = mmc_priv(mmc);
BUG_ON(host == NULL);
-
- del_timer_sync(&host->timer);
-
+
+ del_timer_sync(&host->ignore_timer);
+
mmc_free_host(mmc);
-
+
dev_set_drvdata(dev, NULL);
}
{
int i, j, k;
int id;
-
+
/*
* Iterate through all ports, all codes to
* find hardware that is in our known list.
{
if (!request_region(config_ports[i], 2, DRIVER_NAME))
continue;
-
+
for (j = 0;j < sizeof(unlock_codes)/sizeof(int);j++)
{
id = 0xFFFF;
-
- outb(unlock_codes[j], config_ports[i]);
- outb(unlock_codes[j], config_ports[i]);
-
+
+ host->config = config_ports[i];
+ host->unlock_code = unlock_codes[j];
+
+ wbsd_unlock_config(host);
+
outb(WBSD_CONF_ID_HI, config_ports[i]);
id = inb(config_ports[i] + 1) << 8;
outb(WBSD_CONF_ID_LO, config_ports[i]);
id |= inb(config_ports[i] + 1);
-
+
+ wbsd_lock_config(host);
+
for (k = 0;k < sizeof(valid_ids)/sizeof(int);k++)
{
if (id == valid_ids[k])
- {
+ {
host->chip_id = id;
- host->config = config_ports[i];
- host->unlock_code = unlock_codes[i];
-
+
return 0;
}
}
-
+
if (id != 0xFFFF)
{
DBG("Unknown hardware (id %x) found at %x\n",
id, config_ports[i]);
}
-
- outb(LOCK_CODE, config_ports[i]);
}
-
+
release_region(config_ports[i], 2);
}
-
+
+ host->config = 0;
+ host->unlock_code = 0;
+
return -ENODEV;
}
{
if (io & 0x7)
return -EINVAL;
-
+
if (!request_region(base, 8, DRIVER_NAME))
return -EIO;
-
+
host->base = io;
-
+
return 0;
}
{
if (host->base)
release_region(host->base, 8);
-
+
host->base = 0;
if (host->config)
release_region(host->config, 2);
-
+
host->config = 0;
}
{
if (dma < 0)
return;
-
+
if (request_dma(dma, DRIVER_NAME))
goto err;
-
+
/*
* We need to allocate a special buffer in
* order for ISA to be able to DMA to it.
*/
host->dma_addr = dma_map_single(host->mmc->dev, host->dma_buffer,
WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
-
+
/*
* ISA DMA must be aligned on a 64k basis.
*/
goto kfree;
host->dma = dma;
-
+
return;
-
+
kfree:
/*
* If we've gotten here then there is some kind of alignment bug
*/
BUG_ON(1);
-
+
dma_unmap_single(host->mmc->dev, host->dma_addr, WBSD_DMA_SIZE,
DMA_BIDIRECTIONAL);
host->dma_addr = (dma_addr_t)NULL;
-
+
kfree(host->dma_buffer);
host->dma_buffer = NULL;
if (host->dma_addr)
dma_unmap_single(host->mmc->dev, host->dma_addr, WBSD_DMA_SIZE,
DMA_BIDIRECTIONAL);
- if (host->dma_buffer)
- kfree(host->dma_buffer);
+ kfree(host->dma_buffer);
if (host->dma >= 0)
free_dma(host->dma);
-
+
host->dma = -1;
host->dma_buffer = NULL;
host->dma_addr = (dma_addr_t)NULL;
static int __devinit wbsd_request_irq(struct wbsd_host* host, int irq)
{
int ret;
-
+
/*
* Allocate interrupt.
*/
ret = request_irq(irq, wbsd_irq, SA_SHIRQ, DRIVER_NAME, host);
if (ret)
return ret;
-
+
host->irq = irq;
/*
tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout, (unsigned long)host);
tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish, (unsigned long)host);
tasklet_init(&host->block_tasklet, wbsd_tasklet_block, (unsigned long)host);
-
+
return 0;
}
return;
free_irq(host->irq, host);
-
+
host->irq = 0;
-
+
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->fifo_tasklet);
tasklet_kill(&host->crc_tasklet);
int base, int irq, int dma)
{
int ret;
-
+
/*
* Allocate I/O ports.
*/
* Allocate DMA.
*/
wbsd_request_dma(host, dma);
-
+
return 0;
}
* Configure the resources the chip should use.
*/
-static void __devinit wbsd_chip_config(struct wbsd_host* host)
+static void wbsd_chip_config(struct wbsd_host* host)
{
+ wbsd_unlock_config(host);
+
/*
* Reset the chip.
- */
+ */
wbsd_write_config(host, WBSD_CONF_SWRST, 1);
wbsd_write_config(host, WBSD_CONF_SWRST, 0);
* Select SD/MMC function.
*/
wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
-
+
/*
* Set up card detection.
*/
wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11);
-
+
/*
* Configure chip
*/
wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8);
wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff);
-
+
wbsd_write_config(host, WBSD_CONF_IRQ, host->irq);
-
+
if (host->dma >= 0)
wbsd_write_config(host, WBSD_CONF_DRQ, host->dma);
-
+
/*
* Enable and power up chip.
*/
wbsd_write_config(host, WBSD_CONF_ENABLE, 1);
wbsd_write_config(host, WBSD_CONF_POWER, 0x20);
+
+ wbsd_lock_config(host);
}
/*
* Check that configured resources are correct.
*/
-
-static int __devinit wbsd_chip_validate(struct wbsd_host* host)
+
+static int wbsd_chip_validate(struct wbsd_host* host)
{
int base, irq, dma;
-
+
+ wbsd_unlock_config(host);
+
/*
* Select SD/MMC function.
*/
wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
-
+
/*
* Read configuration.
*/
base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8;
base |= wbsd_read_config(host, WBSD_CONF_PORT_LO);
-
+
irq = wbsd_read_config(host, WBSD_CONF_IRQ);
-
+
dma = wbsd_read_config(host, WBSD_CONF_DRQ);
-
+
+ wbsd_lock_config(host);
+
/*
* Validate against given configuration.
*/
return 0;
if ((dma != host->dma) && (host->dma != -1))
return 0;
-
+
return 1;
}
+/*
+ * Powers down the SD function
+ */
+
+static void wbsd_chip_poweroff(struct wbsd_host* host)
+{
+ wbsd_unlock_config(host);
+
+ wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
+ wbsd_write_config(host, WBSD_CONF_ENABLE, 0);
+
+ wbsd_lock_config(host);
+}
+
/*****************************************************************************\
* *
* Devices setup and shutdown *
struct wbsd_host* host = NULL;
struct mmc_host* mmc = NULL;
int ret;
-
+
ret = wbsd_alloc_mmc(dev);
if (ret)
return ret;
-
+
mmc = dev_get_drvdata(dev);
host = mmc_priv(mmc);
-
+
/*
* Scan for hardware.
*/
return ret;
}
}
-
+
/*
* Request resources.
*/
wbsd_free_mmc(dev);
return ret;
}
-
+
/*
* See if chip needs to be configured.
*/
- if (pnp && (host->config != 0))
+ if (pnp)
{
- if (!wbsd_chip_validate(host))
+ if ((host->config != 0) && !wbsd_chip_validate(host))
{
printk(KERN_WARNING DRIVER_NAME
": PnP active but chip not configured! "
}
else
wbsd_chip_config(host);
-
+
/*
* Power Management stuff. No idea how this works.
* Not tested.
*/
#ifdef CONFIG_PM
if (host->config)
+ {
+ wbsd_unlock_config(host);
wbsd_write_config(host, WBSD_CONF_PME, 0xA0);
+ wbsd_lock_config(host);
+ }
#endif
/*
* Allow device to initialise itself properly.
* Reset the chip into a known state.
*/
wbsd_init_device(host);
-
+
mmc_add_host(mmc);
- printk(KERN_INFO "%s: W83L51xD", mmc->host_name);
+ printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc));
if (host->chip_id != 0)
printk(" id %x", (int)host->chip_id);
printk(" at 0x%x irq %d", (int)host->base, (int)host->irq);
{
struct mmc_host* mmc = dev_get_drvdata(dev);
struct wbsd_host* host;
-
+
if (!mmc)
return;
host = mmc_priv(mmc);
-
+
mmc_remove_host(mmc);
+ /*
+ * Power down the SD/MMC function.
+ */
if (!pnp)
- {
- /*
- * Power down the SD/MMC function.
- */
- wbsd_unlock_config(host);
- wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
- wbsd_write_config(host, WBSD_CONF_ENABLE, 0);
- wbsd_lock_config(host);
- }
-
+ wbsd_chip_poweroff(host);
+
wbsd_release_resources(host);
-
+
wbsd_free_mmc(dev);
}
* Non-PnP
*/
-static int __devinit wbsd_probe(struct device* dev)
+static int __devinit wbsd_probe(struct platform_device* dev)
{
- return wbsd_init(dev, io, irq, dma, 0);
+ return wbsd_init(&dev->dev, io, irq, dma, 0);
}
-static int __devexit wbsd_remove(struct device* dev)
+static int __devexit wbsd_remove(struct platform_device* dev)
{
- wbsd_shutdown(dev, 0);
+ wbsd_shutdown(&dev->dev, 0);
return 0;
}
wbsd_pnp_probe(struct pnp_dev * pnpdev, const struct pnp_device_id *dev_id)
{
int io, irq, dma;
-
+
/*
* Get resources from PnP layer.
*/
dma = pnp_dma(pnpdev, 0);
else
dma = -1;
-
+
DBGF("PnP resources: port %3x irq %d dma %d\n", io, irq, dma);
-
+
return wbsd_init(&pnpdev->dev, io, irq, dma, 1);
}
*/
#ifdef CONFIG_PM
-static int wbsd_suspend(struct device *dev, pm_message_t state, u32 level)
+
+static int wbsd_suspend(struct platform_device *dev, pm_message_t state)
{
- DBGF("Not yet supported\n");
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+ struct wbsd_host *host;
+ int ret;
+
+ if (!mmc)
+ return 0;
+
+ DBG("Suspending...\n");
+
+ ret = mmc_suspend_host(mmc, state);
+ if (!ret)
+ return ret;
+
+ host = mmc_priv(mmc);
+
+ wbsd_chip_poweroff(host);
return 0;
}
-static int wbsd_resume(struct device *dev, u32 level)
+static int wbsd_resume(struct platform_device *dev)
{
- DBGF("Not yet supported\n");
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+ struct wbsd_host *host;
- return 0;
+ if (!mmc)
+ return 0;
+
+ DBG("Resuming...\n");
+
+ host = mmc_priv(mmc);
+
+ wbsd_chip_config(host);
+
+ /*
+ * Allow device to initialise itself properly.
+ */
+ mdelay(5);
+
+ wbsd_init_device(host);
+
+ return mmc_resume_host(mmc);
}
-#else
+
+#else /* CONFIG_PM */
+
#define wbsd_suspend NULL
#define wbsd_resume NULL
-#endif
+
+#endif /* CONFIG_PM */
static struct platform_device *wbsd_device;
-static struct device_driver wbsd_driver = {
- .name = DRIVER_NAME,
- .bus = &platform_bus_type,
+static struct platform_driver wbsd_driver = {
.probe = wbsd_probe,
- .remove = wbsd_remove,
-
+ .remove = __devexit_p(wbsd_remove),
+
.suspend = wbsd_suspend,
.resume = wbsd_resume,
+ .driver = {
+ .name = DRIVER_NAME,
+ },
};
#ifdef CONFIG_PNP
.name = DRIVER_NAME,
.id_table = pnp_dev_table,
.probe = wbsd_pnp_probe,
- .remove = wbsd_pnp_remove,
+ .remove = __devexit_p(wbsd_pnp_remove),
};
#endif /* CONFIG_PNP */
static int __init wbsd_drv_init(void)
{
int result;
-
+
printk(KERN_INFO DRIVER_NAME
": Winbond W83L51xD SD/MMC card interface driver, "
DRIVER_VERSION "\n");
return result;
}
-#endif /* CONFIG_PNP */
-
+#endif /* CONFIG_PNP */
+
if (nopnp)
{
- result = driver_register(&wbsd_driver);
+ result = platform_driver_register(&wbsd_driver);
if (result < 0)
return result;
if (!nopnp)
pnp_unregister_driver(&wbsd_pnp_driver);
-
-#endif /* CONFIG_PNP */
+
+#endif /* CONFIG_PNP */
if (nopnp)
{
platform_device_unregister(wbsd_device);
-
- driver_unregister(&wbsd_driver);
+
+ platform_driver_unregister(&wbsd_driver);
}
DBG("unloaded\n");
module_param(dma, int, 0444);
MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver");
MODULE_VERSION(DRIVER_VERSION);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff