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path: root/drivers/mmc/wbsd.c
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Diffstat (limited to 'drivers/mmc/wbsd.c')
-rw-r--r--drivers/mmc/wbsd.c169
1 files changed, 117 insertions, 52 deletions
diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index 3cbca7cbea8..c7eb7c26908 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -26,7 +26,7 @@
#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>
@@ -42,7 +42,7 @@
#include "wbsd.h"
#define DRIVER_NAME "wbsd"
-#define DRIVER_VERSION "1.4"
+#define DRIVER_VERSION "1.5"
#ifdef CONFIG_MMC_DEBUG
#define DBG(x...) \
@@ -201,7 +201,7 @@ 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).
@@ -880,8 +880,9 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* 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;
}
@@ -1033,13 +1034,16 @@ static void wbsd_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
}
else
{
- setup &= ~WBSD_DAT3_H;
+ 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);
+ /*
+ * 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);
@@ -1166,8 +1170,8 @@ static void wbsd_tasklet_card(unsigned long param)
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;
@@ -1461,8 +1465,10 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
{
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;
@@ -1470,13 +1476,13 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
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;
}
@@ -1487,13 +1493,14 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
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;
}
@@ -1595,8 +1602,7 @@ static void __devexit wbsd_release_dma(struct wbsd_host* host)
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);
@@ -1699,8 +1705,10 @@ static void __devexit wbsd_release_resources(struct wbsd_host* host)
* 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.
*/
@@ -1733,16 +1741,20 @@ static void __devinit wbsd_chip_config(struct wbsd_host* host)
*/
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.
*/
@@ -1758,6 +1770,8 @@ static int __devinit wbsd_chip_validate(struct wbsd_host* host)
dma = wbsd_read_config(host, WBSD_CONF_DRQ);
+ wbsd_lock_config(host);
+
/*
* Validate against given configuration.
*/
@@ -1771,6 +1785,20 @@ static int __devinit wbsd_chip_validate(struct wbsd_host* host)
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 *
@@ -1824,9 +1852,9 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
/*
* 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! "
@@ -1844,7 +1872,11 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
*/
#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.
@@ -1885,16 +1917,11 @@ static void __devexit wbsd_shutdown(struct device* dev, int pnp)
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);
@@ -1905,14 +1932,14 @@ static void __devexit wbsd_shutdown(struct device* dev, int pnp)
* 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;
}
@@ -1955,34 +1982,71 @@ static void __devexit wbsd_pnp_remove(struct pnp_dev * dev)
*/
#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
@@ -1991,7 +2055,7 @@ static struct pnp_driver wbsd_pnp_driver = {
.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 */
@@ -2022,7 +2086,7 @@ static int __init wbsd_drv_init(void)
if (nopnp)
{
- result = driver_register(&wbsd_driver);
+ result = platform_driver_register(&wbsd_driver);
if (result < 0)
return result;
@@ -2048,7 +2112,7 @@ static void __exit wbsd_drv_exit(void)
{
platform_device_unregister(wbsd_device);
- driver_unregister(&wbsd_driver);
+ platform_driver_unregister(&wbsd_driver);
}
DBG("unloaded\n");
@@ -2064,6 +2128,7 @@ module_param(irq, uint, 0444);
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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-06 22:07:41 +0000