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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-14 04:43:32 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-14 04:43:32 (GMT)
commit21ebd6c68b5511b55f4f456e4ba17c2d711e3617 (patch)
tree2f4f98568a7a52ab6734fb190d0cbf6f9c1c6492 /drivers/mfd/mc13xxx-core.c
parent4b8be38cf782f8ebebc089083fa0572ade79d7ca (diff)
parent74d836c4142e5d100f8d9a1b2ee3003c2ed7109d (diff)
downloadlinux-21ebd6c68b5511b55f4f456e4ba17c2d711e3617.tar.xz
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (59 commits) rtc: max8925: Add function to work as wakeup source mfd: Add pm ops to max8925 mfd: Convert aat2870 to dev_pm_ops mfd: Still check other interrupts if we get a wm831x touchscreen IRQ mfd: Introduce missing kfree in 88pm860x probe routine mfd: Add S5M series configuration mfd: Add s5m series irq driver mfd: Add S5M core driver mfd: Improve mc13xxx dt binding document mfd: Fix stmpe section mismatch mfd: Fix stmpe build warning mfd: Fix STMPE I2c build failure mfd: Constify aat2870-core i2c_device_id table gpio: Add support for stmpe variant 801 mfd: Add support for stmpe variant 801 mfd: Add support for stmpe variant 610 mfd: Add support for STMPE SPI interface mfd: Separate out STMPE controller and interface specific code misc: Remove max8997-muic sysfs attributes mfd: Remove unused wm831x_irq_data_to_mask_reg() ... Fix up trivial conflict in drivers/leds/Kconfig due to addition of LEDS_MAX8997 and LEDS_TCA6507 next to each other.
Diffstat (limited to 'drivers/mfd/mc13xxx-core.c')
-rw-r--r--drivers/mfd/mc13xxx-core.c111
1 files changed, 77 insertions, 34 deletions
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index e9619ac..7122386 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -18,11 +18,15 @@
#include <linux/spi/spi.h>
#include <linux/mfd/core.h>
#include <linux/mfd/mc13xxx.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
struct mc13xxx {
struct spi_device *spidev;
struct mutex lock;
int irq;
+ int flags;
irq_handler_t irqhandler[MC13XXX_NUM_IRQ];
void *irqdata[MC13XXX_NUM_IRQ];
@@ -550,10 +554,7 @@ static const char *mc13xxx_get_chipname(struct mc13xxx *mc13xxx)
int mc13xxx_get_flags(struct mc13xxx *mc13xxx)
{
- struct mc13xxx_platform_data *pdata =
- dev_get_platdata(&mc13xxx->spidev->dev);
-
- return pdata->flags;
+ return mc13xxx->flags;
}
EXPORT_SYMBOL(mc13xxx_get_flags);
@@ -615,13 +616,13 @@ int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode,
break;
case MC13XXX_ADC_MODE_SINGLE_CHAN:
- adc0 |= old_adc0 & MC13XXX_ADC0_TSMOD_MASK;
+ adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
adc1 |= (channel & 0x7) << MC13XXX_ADC1_CHAN0_SHIFT;
adc1 |= MC13XXX_ADC1_RAND;
break;
case MC13XXX_ADC_MODE_MULT_CHAN:
- adc0 |= old_adc0 & MC13XXX_ADC0_TSMOD_MASK;
+ adc0 |= old_adc0 & MC13XXX_ADC0_CONFIG_MASK;
adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT;
break;
@@ -696,17 +697,67 @@ static int mc13xxx_add_subdevice(struct mc13xxx *mc13xxx, const char *format)
return mc13xxx_add_subdevice_pdata(mc13xxx, format, NULL, 0);
}
+#ifdef CONFIG_OF
+static int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
+{
+ struct device_node *np = mc13xxx->spidev->dev.of_node;
+
+ if (!np)
+ return -ENODEV;
+
+ if (of_get_property(np, "fsl,mc13xxx-uses-adc", NULL))
+ mc13xxx->flags |= MC13XXX_USE_ADC;
+
+ if (of_get_property(np, "fsl,mc13xxx-uses-codec", NULL))
+ mc13xxx->flags |= MC13XXX_USE_CODEC;
+
+ if (of_get_property(np, "fsl,mc13xxx-uses-rtc", NULL))
+ mc13xxx->flags |= MC13XXX_USE_RTC;
+
+ if (of_get_property(np, "fsl,mc13xxx-uses-touch", NULL))
+ mc13xxx->flags |= MC13XXX_USE_TOUCHSCREEN;
+
+ return 0;
+}
+#else
+static inline int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
+{
+ return -ENODEV;
+}
+#endif
+
+static const struct spi_device_id mc13xxx_device_id[] = {
+ {
+ .name = "mc13783",
+ .driver_data = MC13XXX_ID_MC13783,
+ }, {
+ .name = "mc13892",
+ .driver_data = MC13XXX_ID_MC13892,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(spi, mc13xxx_device_id);
+
+static const struct of_device_id mc13xxx_dt_ids[] = {
+ { .compatible = "fsl,mc13783", .data = (void *) MC13XXX_ID_MC13783, },
+ { .compatible = "fsl,mc13892", .data = (void *) MC13XXX_ID_MC13892, },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
+
static int mc13xxx_probe(struct spi_device *spi)
{
+ const struct of_device_id *of_id;
+ struct spi_driver *sdrv = to_spi_driver(spi->dev.driver);
struct mc13xxx *mc13xxx;
struct mc13xxx_platform_data *pdata = dev_get_platdata(&spi->dev);
enum mc13xxx_id id;
int ret;
- if (!pdata) {
- dev_err(&spi->dev, "invalid platform data\n");
- return -EINVAL;
- }
+ of_id = of_match_device(mc13xxx_dt_ids, &spi->dev);
+ if (of_id)
+ sdrv->id_table = &mc13xxx_device_id[(enum mc13xxx_id) of_id->data];
mc13xxx = kzalloc(sizeof(*mc13xxx), GFP_KERNEL);
if (!mc13xxx)
@@ -749,28 +800,33 @@ err_revision:
mc13xxx_unlock(mc13xxx);
- if (pdata->flags & MC13XXX_USE_ADC)
+ if (mc13xxx_probe_flags_dt(mc13xxx) < 0 && pdata)
+ mc13xxx->flags = pdata->flags;
+
+ if (mc13xxx->flags & MC13XXX_USE_ADC)
mc13xxx_add_subdevice(mc13xxx, "%s-adc");
- if (pdata->flags & MC13XXX_USE_CODEC)
+ if (mc13xxx->flags & MC13XXX_USE_CODEC)
mc13xxx_add_subdevice(mc13xxx, "%s-codec");
- mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator",
- &pdata->regulators, sizeof(pdata->regulators));
-
- if (pdata->flags & MC13XXX_USE_RTC)
+ if (mc13xxx->flags & MC13XXX_USE_RTC)
mc13xxx_add_subdevice(mc13xxx, "%s-rtc");
- if (pdata->flags & MC13XXX_USE_TOUCHSCREEN)
+ if (mc13xxx->flags & MC13XXX_USE_TOUCHSCREEN)
mc13xxx_add_subdevice(mc13xxx, "%s-ts");
- if (pdata->leds)
+ if (pdata) {
+ mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator",
+ &pdata->regulators, sizeof(pdata->regulators));
mc13xxx_add_subdevice_pdata(mc13xxx, "%s-led",
pdata->leds, sizeof(*pdata->leds));
-
- if (pdata->buttons)
mc13xxx_add_subdevice_pdata(mc13xxx, "%s-pwrbutton",
pdata->buttons, sizeof(*pdata->buttons));
+ } else {
+ mc13xxx_add_subdevice(mc13xxx, "%s-regulator");
+ mc13xxx_add_subdevice(mc13xxx, "%s-led");
+ mc13xxx_add_subdevice(mc13xxx, "%s-pwrbutton");
+ }
return 0;
}
@@ -788,25 +844,12 @@ static int __devexit mc13xxx_remove(struct spi_device *spi)
return 0;
}
-static const struct spi_device_id mc13xxx_device_id[] = {
- {
- .name = "mc13783",
- .driver_data = MC13XXX_ID_MC13783,
- }, {
- .name = "mc13892",
- .driver_data = MC13XXX_ID_MC13892,
- }, {
- /* sentinel */
- }
-};
-MODULE_DEVICE_TABLE(spi, mc13xxx_device_id);
-
static struct spi_driver mc13xxx_driver = {
.id_table = mc13xxx_device_id,
.driver = {
.name = "mc13xxx",
- .bus = &spi_bus_type,
.owner = THIS_MODULE,
+ .of_match_table = mc13xxx_dt_ids,
},
.probe = mc13xxx_probe,
.remove = __devexit_p(mc13xxx_remove),