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authorLee Jones <lee.jones@linaro.org>2012-05-17 14:45:14 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-05-18 08:36:45 +0100
commita7ac1d9e4eac7e4ca5f7c76ea98421a0f6af671b (patch)
tree72ef75d9ca752a436d2492b18fbdd69ff9b7d894 /drivers/regulator
parent68c7ff8f9b40bcc35abb22160bc30221477e0a89 (diff)
regulator: ab8500: Split up probe() into manageable pieces
ab8500's probe() function is becoming quite large, so in the lead up to Device Tree enablement which will fork the thread of execution this patch splits it into 3 main areas; basic error checking will remain in probe(), but regulator register initialisation and regulator registration have been moved to their own functions which will be called in sequence by probe() and the DT equivalent. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/ab8500.c150
1 files changed, 87 insertions, 63 deletions
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index d1563907d3c..3571b5425b3 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -708,11 +708,92 @@ static struct ab8500_reg_init ab8500_reg_init[] = {
REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
};
+static __devinit int
+ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value)
+{
+ int err;
+
+ if (value & ~ab8500_reg_init[id].mask) {
+ dev_err(&pdev->dev,
+ "Configuration error: value outside mask.\n");
+ return -EINVAL;
+ }
+
+ err = abx500_mask_and_set_register_interruptible(
+ &pdev->dev,
+ ab8500_reg_init[id].bank,
+ ab8500_reg_init[id].addr,
+ ab8500_reg_init[id].mask,
+ value);
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Failed to initialize 0x%02x, 0x%02x.\n",
+ ab8500_reg_init[id].bank,
+ ab8500_reg_init[id].addr);
+ return err;
+ }
+
+ dev_vdbg(&pdev->dev,
+ "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+ ab8500_reg_init[id].bank,
+ ab8500_reg_init[id].addr,
+ ab8500_reg_init[id].mask,
+ value);
+
+ return 0;
+}
+
+static __devinit int ab8500_regulator_register(struct platform_device *pdev,
+ struct regulator_init_data *init_data,
+ int id,
+ struct device_node *np)
+{
+ struct ab8500_regulator_info *info = NULL;
+ struct regulator_config config = { };
+ int err;
+
+ /* assign per-regulator data */
+ info = &ab8500_regulator_info[id];
+ info->dev = &pdev->dev;
+
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.driver_data = info;
+ config.of_node = np;
+
+ /* fix for hardware before ab8500v2.0 */
+ if (abx500_get_chip_id(info->dev) < 0x20) {
+ if (info->desc.id == AB8500_LDO_AUX3) {
+ info->desc.n_voltages =
+ ARRAY_SIZE(ldo_vauxn_voltages);
+ info->voltages = ldo_vauxn_voltages;
+ info->voltages_len =
+ ARRAY_SIZE(ldo_vauxn_voltages);
+ info->voltage_mask = 0xf;
+ }
+ }
+
+ /* register regulator with framework */
+ info->regulator = regulator_register(&info->desc, &config);
+ if (IS_ERR(info->regulator)) {
+ err = PTR_ERR(info->regulator);
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ info->desc.name);
+ /* when we fail, un-register all earlier regulators */
+ while (--id >= 0) {
+ info = &ab8500_regulator_info[id];
+ regulator_unregister(info->regulator);
+ }
+ return err;
+ }
+
+ return 0;
+}
+
static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
{
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
struct ab8500_platform_data *pdata;
- struct regulator_config config = { };
int i, err;
if (!ab8500) {
@@ -733,8 +814,7 @@ static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
/* initialize registers */
for (i = 0; i < pdata->num_regulator_reg_init; i++) {
- int id;
- u8 value;
+ int id, value;
id = pdata->regulator_reg_init[i].id;
value = pdata->regulator_reg_init[i].value;
@@ -745,73 +825,17 @@ static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
"Configuration error: id outside range.\n");
return -EINVAL;
}
- if (value & ~ab8500_reg_init[id].mask) {
- dev_err(&pdev->dev,
- "Configuration error: value outside mask.\n");
- return -EINVAL;
- }
- /* initialize register */
- err = abx500_mask_and_set_register_interruptible(&pdev->dev,
- ab8500_reg_init[id].bank,
- ab8500_reg_init[id].addr,
- ab8500_reg_init[id].mask,
- value);
- if (err < 0) {
- dev_err(&pdev->dev,
- "Failed to initialize 0x%02x, 0x%02x.\n",
- ab8500_reg_init[id].bank,
- ab8500_reg_init[id].addr);
+ err = ab8500_regulator_init_registers(pdev, id, value);
+ if (err < 0)
return err;
- }
- dev_vdbg(&pdev->dev,
- " init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
- ab8500_reg_init[id].bank,
- ab8500_reg_init[id].addr,
- ab8500_reg_init[id].mask,
- value);
}
/* register all regulators */
for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
- struct ab8500_regulator_info *info = NULL;
-
- /* assign per-regulator data */
- info = &ab8500_regulator_info[i];
- info->dev = &pdev->dev;
-
- config.dev = &pdev->dev;
- config.init_data = &pdata->regulator[i];
- config.driver_data = info;
-
- /* fix for hardware before ab8500v2.0 */
- if (abx500_get_chip_id(info->dev) < 0x20) {
- if (info->desc.id == AB8500_LDO_AUX3) {
- info->desc.n_voltages =
- ARRAY_SIZE(ldo_vauxn_voltages);
- info->voltages = ldo_vauxn_voltages;
- info->voltages_len =
- ARRAY_SIZE(ldo_vauxn_voltages);
- info->voltage_mask = 0xf;
- }
- }
-
- /* register regulator with framework */
- info->regulator = regulator_register(&info->desc, &config);
- if (IS_ERR(info->regulator)) {
- err = PTR_ERR(info->regulator);
- dev_err(&pdev->dev, "failed to register regulator %s\n",
- info->desc.name);
- /* when we fail, un-register all earlier regulators */
- while (--i >= 0) {
- info = &ab8500_regulator_info[i];
- regulator_unregister(info->regulator);
- }
+ err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
+ if (err < 0)
return err;
- }
-
- dev_vdbg(rdev_get_dev(info->regulator),
- "%s-probed\n", info->desc.name);
}
return 0;