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authorJochen Friedrich <jochen@scram.de>2011-11-28 01:00:54 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2012-01-09 03:37:33 +0400
commit5dd7bf59e0e8563265b3e5b33276099ef628fcc7 (patch)
tree1372dd626865e4ed21cac103a706f06ef6ff700e /drivers/mfd/ucb1x00-core.c
parentc9531227b289947950cce29cfe881b768bf9d7d9 (diff)
downloadlinux-5dd7bf59e0e8563265b3e5b33276099ef628fcc7.tar.xz
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>
Diffstat (limited to 'drivers/mfd/ucb1x00-core.c')
-rw-r--r--drivers/mfd/ucb1x00-core.c48
1 files changed, 37 insertions, 11 deletions
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index b281217334eb..91c4f25e0e55 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -36,6 +36,15 @@ static DEFINE_MUTEX(ucb1x00_mutex);
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 struct class ucb1x00_class = {
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 @@ static int ucb1x00_probe(struct mcp *mcp)
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 @@ static int ucb1x00_probe(struct mcp *mcp)
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 @@ static struct mcp_driver ucb1x00_driver = {
.remove = ucb1x00_remove,
.suspend = ucb1x00_suspend,
.resume = ucb1x00_resume,
+ .id_table = ucb1x00_id,
};
static int __init ucb1x00_init(void)