[PATCH v5 6/7] i2c: davinci: switch to using gpiod for bus recovery gpios
Phil Reid
preid at electromag.com.au
Wed Nov 1 19:40:29 PDT 2017
Change the driver to use the gpio descriptors for the bus recovery
information instead of the deprecated integer interface.
Reviewed-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
Signed-off-by: Phil Reid <preid at electromag.com.au>
---
drivers/i2c/busses/i2c-davinci.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 2ead9b9..2afb12a 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -294,7 +294,7 @@ static int i2c_davinci_init(struct davinci_i2c_dev *dev)
}
/*
- * This routine does i2c bus recovery by using i2c_generic_gpio_recovery
+ * This routine does i2c bus recovery by using i2c_generic_scl_recovery
* which is provided by I2C Bus recovery infrastructure.
*/
static void davinci_i2c_prepare_recovery(struct i2c_adapter *adap)
@@ -316,7 +316,7 @@ static void davinci_i2c_unprepare_recovery(struct i2c_adapter *adap)
}
static struct i2c_bus_recovery_info davinci_i2c_gpio_recovery_info = {
- .recover_bus = i2c_generic_gpio_recovery,
+ .recover_bus = i2c_generic_scl_recovery,
.prepare_recovery = davinci_i2c_prepare_recovery,
.unprepare_recovery = davinci_i2c_unprepare_recovery,
};
@@ -769,6 +769,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
struct davinci_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem;
+ struct i2c_bus_recovery_info *rinfo;
int r, irq;
irq = platform_get_irq(pdev, 0);
@@ -869,9 +870,18 @@ static int davinci_i2c_probe(struct platform_device *pdev)
if (dev->pdata->has_pfunc)
adap->bus_recovery_info = &davinci_i2c_scl_recovery_info;
else if (dev->pdata->scl_pin) {
- adap->bus_recovery_info = &davinci_i2c_gpio_recovery_info;
- adap->bus_recovery_info->scl_gpio = dev->pdata->scl_pin;
- adap->bus_recovery_info->sda_gpio = dev->pdata->sda_pin;
+ rinfo = &davinci_i2c_gpio_recovery_info;
+ adap->bus_recovery_info = rinfo;
+ r = gpio_request_one(dev->pdata->scl_pin, GPIOF_OPEN_DRAIN |
+ GPIOF_OUT_INIT_HIGH, "i2c-scl");
+ if (r)
+ goto err_unuse_clocks;
+ rinfo->scl_gpiod = gpio_to_desc(dev->pdata->scl_pin);
+
+ r = gpio_request_one(dev->pdata->sda_pin, GPIOF_IN, "i2c-sda");
+ if (r)
+ goto err_unuse_clocks;
+ rinfo->sda_gpiod = gpio_to_desc(dev->pdata->scl_pin);
}
adap->nr = pdev->id;
--
1.8.3.1
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