ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus.
Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c
index 84815f9..63be60b 100644
--- a/drivers/mfd/mcp-core.c
+++ b/drivers/mfd/mcp-core.c
@@ -26,9 +26,35 @@
#define to_mcp(d) container_of(d, struct mcp, attached_device)
#define to_mcp_driver(d) container_of(d, struct mcp_driver, drv)
+static const struct mcp_device_id *mcp_match_id(const struct mcp_device_id *id,
+ const char *codec)
+{
+ while (id->name[0]) {
+ if (strcmp(codec, id->name) == 0)
+ return id;
+ id++;
+ }
+ return NULL;
+}
+
+const struct mcp_device_id *mcp_get_device_id(const struct mcp *mcp)
+{
+ const struct mcp_driver *driver =
+ to_mcp_driver(mcp->attached_device.driver);
+
+ return mcp_match_id(driver->id_table, mcp->codec);
+}
+EXPORT_SYMBOL(mcp_get_device_id);
+
static int mcp_bus_match(struct device *dev, struct device_driver *drv)
{
- return 1;
+ const struct mcp *mcp = to_mcp(dev);
+ const struct mcp_driver *driver = to_mcp_driver(drv);
+
+ if (driver->id_table)
+ return !!mcp_match_id(driver->id_table, mcp->codec);
+
+ return 0;
}
static int mcp_bus_probe(struct device *dev)
@@ -74,9 +100,18 @@
return ret;
}
+static int mcp_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct mcp *mcp = to_mcp(dev);
+
+ add_uevent_var(env, "MODALIAS=%s%s", MCP_MODULE_PREFIX, mcp->codec);
+ return 0;
+}
+
static struct bus_type mcp_bus_type = {
.name = "mcp",
.match = mcp_bus_match,
+ .uevent = mcp_bus_uevent,
.probe = mcp_bus_probe,
.remove = mcp_bus_remove,
.suspend = mcp_bus_suspend,
@@ -212,9 +247,14 @@
}
EXPORT_SYMBOL(mcp_host_alloc);
-int mcp_host_register(struct mcp *mcp)
+int mcp_host_register(struct mcp *mcp, void *pdata)
{
+ if (!mcp->codec)
+ return -EINVAL;
+
+ mcp->attached_device.platform_data = pdata;
dev_set_name(&mcp->attached_device, "mcp0");
+ request_module("%s%s", MCP_MODULE_PREFIX, mcp->codec);
return device_register(&mcp->attached_device);
}
EXPORT_SYMBOL(mcp_host_register);
diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c
index 02c53a0..da4e077 100644
--- a/drivers/mfd/mcp-sa11x0.c
+++ b/drivers/mfd/mcp-sa11x0.c
@@ -146,6 +146,9 @@
if (!data)
return -ENODEV;
+ if (!data->codec)
+ return -ENODEV;
+
if (!request_mem_region(0x80060000, 0x60, "sa11x0-mcp"))
return -EBUSY;
@@ -162,7 +165,7 @@
mcp->dma_audio_wr = DMA_Ser4MCP0Wr;
mcp->dma_telco_rd = DMA_Ser4MCP1Rd;
mcp->dma_telco_wr = DMA_Ser4MCP1Wr;
- mcp->gpio_base = data->gpio_base;
+ mcp->codec = data->codec;
platform_set_drvdata(pdev, mcp);
@@ -195,7 +198,7 @@
mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) /
mcp->sclk_rate;
- ret = mcp_host_register(mcp);
+ ret = mcp_host_register(mcp, data->codec_pdata);
if (ret == 0)
goto out;
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index b281217..91c4f25 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -36,6 +36,15 @@
static LIST_HEAD(ucb1x00_drivers);
static LIST_HEAD(ucb1x00_devices);
+static struct mcp_device_id ucb1x00_id[] = {
+ { "ucb1x00", 0 }, /* auto-detection */
+ { "ucb1200", UCB_ID_1200 },
+ { "ucb1300", UCB_ID_1300 },
+ { "tc35143", UCB_ID_TC35143 },
+ { }
+};
+MODULE_DEVICE_TABLE(mcp, ucb1x00_id);
+
/**
* ucb1x00_io_set_dir - set IO direction
* @ucb: UCB1x00 structure describing chip
@@ -527,17 +536,33 @@
static int ucb1x00_probe(struct mcp *mcp)
{
+ const struct mcp_device_id *mid;
struct ucb1x00 *ucb;
struct ucb1x00_driver *drv;
+ struct ucb1x00_plat_data *pdata;
unsigned int id;
int ret = -ENODEV;
int temp;
mcp_enable(mcp);
id = mcp_reg_read(mcp, UCB_ID);
+ mid = mcp_get_device_id(mcp);
- if (id != UCB_ID_1200 && id != UCB_ID_1300 && id != UCB_ID_TC35143) {
- printk(KERN_WARNING "UCB1x00 ID not found: %04x\n", id);
+ if (mid && mid->driver_data) {
+ if (id != mid->driver_data) {
+ printk(KERN_WARNING "%s wrong ID %04x found: %04x\n",
+ mid->name, (unsigned int) mid->driver_data, id);
+ goto err_disable;
+ }
+ } else {
+ mid = &ucb1x00_id[1];
+ while (mid->driver_data) {
+ if (id == mid->driver_data)
+ break;
+ mid++;
+ }
+ printk(KERN_WARNING "%s ID not found: %04x\n",
+ ucb1x00_id[0].name, id);
goto err_disable;
}
@@ -546,28 +571,28 @@
if (!ucb)
goto err_disable;
-
+ pdata = mcp->attached_device.platform_data;
ucb->dev.class = &ucb1x00_class;
ucb->dev.parent = &mcp->attached_device;
- dev_set_name(&ucb->dev, "ucb1x00");
+ dev_set_name(&ucb->dev, mid->name);
spin_lock_init(&ucb->lock);
spin_lock_init(&ucb->io_lock);
sema_init(&ucb->adc_sem, 1);
- ucb->id = id;
+ ucb->id = mid;
ucb->mcp = mcp;
ucb->irq = ucb1x00_detect_irq(ucb);
if (ucb->irq == NO_IRQ) {
- printk(KERN_ERR "UCB1x00: IRQ probe failed\n");
+ printk(KERN_ERR "%s: IRQ probe failed\n", mid->name);
ret = -ENODEV;
goto err_free;
}
ucb->gpio.base = -1;
- if (mcp->gpio_base != 0) {
+ if (pdata && (pdata->gpio_base >= 0)) {
ucb->gpio.label = dev_name(&ucb->dev);
- ucb->gpio.base = mcp->gpio_base;
+ ucb->gpio.base = pdata->gpio_base;
ucb->gpio.ngpio = 10;
ucb->gpio.set = ucb1x00_gpio_set;
ucb->gpio.get = ucb1x00_gpio_get;
@@ -580,10 +605,10 @@
dev_info(&ucb->dev, "gpio_base not set so no gpiolib support");
ret = request_irq(ucb->irq, ucb1x00_irq, IRQF_TRIGGER_RISING,
- "UCB1x00", ucb);
+ mid->name, ucb);
if (ret) {
- printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n",
- ucb->irq, ret);
+ printk(KERN_ERR "%s: unable to grab irq%d: %d\n",
+ mid->name, ucb->irq, ret);
goto err_gpio;
}
@@ -705,6 +730,7 @@
.remove = ucb1x00_remove,
.suspend = ucb1x00_suspend,
.resume = ucb1x00_resume,
+ .id_table = ucb1x00_id,
};
static int __init ucb1x00_init(void)
diff --git a/drivers/mfd/ucb1x00-ts.c b/drivers/mfd/ucb1x00-ts.c
index 38ffbd5..40ec3c1 100644
--- a/drivers/mfd/ucb1x00-ts.c
+++ b/drivers/mfd/ucb1x00-ts.c
@@ -382,7 +382,7 @@
ts->adcsync = adcsync ? UCB_SYNC : UCB_NOSYNC;
idev->name = "Touchscreen panel";
- idev->id.product = ts->ucb->id;
+ idev->id.product = ts->ucb->id->driver_data;
idev->open = ucb1x00_ts_open;
idev->close = ucb1x00_ts_close;