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authorHeikki Krogerus <heikki.krogerus@linux.intel.com>2013-10-16 13:53:42 +0300
committerJohannes Berg <johannes.berg@intel.com>2013-10-28 15:05:25 +0100
commit262c91ee5e524238d4dabf908c88f8518ed334ce (patch)
treedac63459b5f69a8628a8f3dd49e28f7b05f851b8 /net/rfkill
parent0be81727a48cc28c1219395f32da8ccc99d6c6d0 (diff)
downloadlinux-stericsson-262c91ee5e524238d4dabf908c88f8518ed334ce.tar.gz
net: rfkill: gpio: prepare for DT and ACPI support
This will add the relevant values like the gpios and the type in rfkill_gpio_platform_data to the rfkill_gpio_data structure. It will allow those values to be easily picked from DT and ACPI tables later. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Rhyland Klein <rklein@nvidia.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/rfkill')
-rw-r--r--net/rfkill/rfkill-gpio.c92
1 files changed, 51 insertions, 41 deletions
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index aa4ac108c330..2dd78c628d86 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -28,12 +28,17 @@
#include <linux/rfkill-gpio.h>
struct rfkill_gpio_data {
- struct rfkill_gpio_platform_data *pdata;
- struct rfkill *rfkill_dev;
- char *reset_name;
- char *shutdown_name;
- struct clk *clk;
- bool clk_enabled;
+ const char *name;
+ enum rfkill_type type;
+ int reset_gpio;
+ int shutdown_gpio;
+
+ struct rfkill *rfkill_dev;
+ char *reset_name;
+ char *shutdown_name;
+ struct clk *clk;
+
+ bool clk_enabled;
};
static int rfkill_gpio_set_power(void *data, bool blocked)
@@ -41,19 +46,19 @@ static int rfkill_gpio_set_power(void *data, bool blocked)
struct rfkill_gpio_data *rfkill = data;
if (blocked) {
- if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
- gpio_set_value(rfkill->pdata->shutdown_gpio, 0);
- if (gpio_is_valid(rfkill->pdata->reset_gpio))
- gpio_set_value(rfkill->pdata->reset_gpio, 0);
+ if (gpio_is_valid(rfkill->shutdown_gpio))
+ gpio_set_value(rfkill->shutdown_gpio, 0);
+ if (gpio_is_valid(rfkill->reset_gpio))
+ gpio_set_value(rfkill->reset_gpio, 0);
if (!IS_ERR(rfkill->clk) && rfkill->clk_enabled)
clk_disable(rfkill->clk);
} else {
if (!IS_ERR(rfkill->clk) && !rfkill->clk_enabled)
clk_enable(rfkill->clk);
- if (gpio_is_valid(rfkill->pdata->reset_gpio))
- gpio_set_value(rfkill->pdata->reset_gpio, 1);
- if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
- gpio_set_value(rfkill->pdata->shutdown_gpio, 1);
+ if (gpio_is_valid(rfkill->reset_gpio))
+ gpio_set_value(rfkill->reset_gpio, 1);
+ if (gpio_is_valid(rfkill->shutdown_gpio))
+ gpio_set_value(rfkill->shutdown_gpio, 1);
}
rfkill->clk_enabled = blocked;
@@ -67,29 +72,35 @@ static const struct rfkill_ops rfkill_gpio_ops = {
static int rfkill_gpio_probe(struct platform_device *pdev)
{
- struct rfkill_gpio_data *rfkill;
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
+ struct rfkill_gpio_data *rfkill;
+ const char *clk_name = NULL;
int ret = 0;
int len = 0;
- if (!pdata) {
- pr_warn("%s: No platform data specified\n", __func__);
- return -EINVAL;
+ rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL);
+ if (!rfkill)
+ return -ENOMEM;
+
+ if (pdata) {
+ clk_name = pdata->power_clk_name;
+ rfkill->name = pdata->name;
+ rfkill->type = pdata->type;
+ rfkill->reset_gpio = pdata->reset_gpio;
+ rfkill->shutdown_gpio = pdata->shutdown_gpio;
+ } else {
+ return -ENODEV;
}
/* make sure at-least one of the GPIO is defined and that
* a name is specified for this instance */
- if (!pdata->name || (!gpio_is_valid(pdata->reset_gpio) &&
- !gpio_is_valid(pdata->shutdown_gpio))) {
+ if ((!gpio_is_valid(rfkill->reset_gpio) &&
+ !gpio_is_valid(rfkill->shutdown_gpio)) || !rfkill->name) {
pr_warn("%s: invalid platform data\n", __func__);
return -EINVAL;
}
- rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL);
- if (!rfkill)
- return -ENOMEM;
-
- if (pdata->gpio_runtime_setup) {
+ if (pdata && pdata->gpio_runtime_setup) {
ret = pdata->gpio_runtime_setup(pdev);
if (ret) {
pr_warn("%s: can't set up gpio\n", __func__);
@@ -97,9 +108,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
}
}
- rfkill->pdata = pdata;
-
- len = strlen(pdata->name);
+ len = strlen(rfkill->name);
rfkill->reset_name = devm_kzalloc(&pdev->dev, len + 7, GFP_KERNEL);
if (!rfkill->reset_name)
return -ENOMEM;
@@ -108,13 +117,13 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
if (!rfkill->shutdown_name)
return -ENOMEM;
- snprintf(rfkill->reset_name, len + 6 , "%s_reset", pdata->name);
- snprintf(rfkill->shutdown_name, len + 9, "%s_shutdown", pdata->name);
+ snprintf(rfkill->reset_name, len + 6 , "%s_reset", rfkill->name);
+ snprintf(rfkill->shutdown_name, len + 9, "%s_shutdown", rfkill->name);
- rfkill->clk = devm_clk_get(&pdev->dev, pdata->power_clk_name);
+ rfkill->clk = devm_clk_get(&pdev->dev, clk_name);
- if (gpio_is_valid(pdata->reset_gpio)) {
- ret = devm_gpio_request_one(&pdev->dev, pdata->reset_gpio,
+ if (gpio_is_valid(rfkill->reset_gpio)) {
+ ret = devm_gpio_request_one(&pdev->dev, rfkill->reset_gpio,
0, rfkill->reset_name);
if (ret) {
pr_warn("%s: failed to get reset gpio.\n", __func__);
@@ -122,8 +131,8 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
}
}
- if (gpio_is_valid(pdata->shutdown_gpio)) {
- ret = devm_gpio_request_one(&pdev->dev, pdata->shutdown_gpio,
+ if (gpio_is_valid(rfkill->shutdown_gpio)) {
+ ret = devm_gpio_request_one(&pdev->dev, rfkill->shutdown_gpio,
0, rfkill->shutdown_name);
if (ret) {
pr_warn("%s: failed to get shutdown gpio.\n", __func__);
@@ -131,8 +140,9 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
}
}
- rfkill->rfkill_dev = rfkill_alloc(pdata->name, &pdev->dev, pdata->type,
- &rfkill_gpio_ops, rfkill);
+ rfkill->rfkill_dev = rfkill_alloc(rfkill->name, &pdev->dev,
+ rfkill->type, &rfkill_gpio_ops,
+ rfkill);
if (!rfkill->rfkill_dev)
return -ENOMEM;
@@ -142,7 +152,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, rfkill);
- dev_info(&pdev->dev, "%s device registered.\n", pdata->name);
+ dev_info(&pdev->dev, "%s device registered.\n", rfkill->name);
return 0;
}
@@ -152,7 +162,7 @@ static int rfkill_gpio_remove(struct platform_device *pdev)
struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev);
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
- if (pdata->gpio_runtime_close)
+ if (pdata && pdata->gpio_runtime_close)
pdata->gpio_runtime_close(pdev);
rfkill_unregister(rfkill->rfkill_dev);
rfkill_destroy(rfkill->rfkill_dev);
@@ -164,8 +174,8 @@ static struct platform_driver rfkill_gpio_driver = {
.probe = rfkill_gpio_probe,
.remove = rfkill_gpio_remove,
.driver = {
- .name = "rfkill_gpio",
- .owner = THIS_MODULE,
+ .name = "rfkill_gpio",
+ .owner = THIS_MODULE,
},
};