[ARM] pxa/em-x270: add ability to control GPS and GPRS power

Register userspace-consumer devices to allow userspace control of
voltage regulators supplying GPS and GPRS modules

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

1 files changed, 51 insertions, 2 deletions

diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index b2d5a5394e47..5184a570ac5f 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -30,6 +30,7 @@
 #include <linux/apm-emulation.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pca953x.h>
+#include <linux/regulator/userspace-consumer.h>
 
 #include <media/soc_camera.h>
 
@@ -1038,6 +1039,52 @@ static void  __init em_x270_init_camera(void)
 static inline void em_x270_init_camera(void) {}
 #endif
 
+static struct regulator_bulk_data em_x270_gps_consumer_supply = {
+        .supply         = "vcc gps",
+};
+
+static struct regulator_userspace_consumer_data em_x270_gps_consumer_data = {
+        .name           = "vcc gps",
+        .num_supplies   = 1,
+        .supplies       = &em_x270_gps_consumer_supply,
+};
+
+static struct platform_device em_x270_gps_userspace_consumer = {
+        .name           = "reg-userspace-consumer",
+        .id             = 0,
+        .dev            = {
+                .platform_data = &em_x270_gps_consumer_data,
+        },
+};
+
+static struct regulator_bulk_data em_x270_gprs_consumer_supply = {
+        .supply         = "vcc gprs",
+};
+
+static struct regulator_userspace_consumer_data em_x270_gprs_consumer_data = {
+        .name           = "vcc gprs",
+        .num_supplies   = 1,
+        .supplies       = &em_x270_gprs_consumer_supply
+};
+
+static struct platform_device em_x270_gprs_userspace_consumer = {
+        .name           = "reg-userspace-consumer",
+        .id             = 1,
+        .dev            = {
+                .platform_data = &em_x270_gprs_consumer_data,
+        }
+};
+
+static struct platform_device *em_x270_userspace_consumers[] = {
+        &em_x270_gps_userspace_consumer,
+        &em_x270_gprs_userspace_consumer,
+};
+
+static void __init em_x270_userspace_consumers_init(void)
+{
+        platform_add_devices(ARRAY_AND_SIZE(em_x270_userspace_consumers));
+}
+
 /* DA9030 related initializations */
 #define REGULATOR_CONSUMER(_name, _dev, _supply)                               \
         static struct regulator_consumer_supply _name##_consumers[] = { \
@@ -1047,11 +1094,11 @@ static inline void em_x270_init_camera(void) {}
                 },                                                      \
         }
 
-REGULATOR_CONSUMER(ldo3, NULL, "vcc gps");
+REGULATOR_CONSUMER(ldo3, &em_x270_gps_userspace_consumer.dev, "vcc gps");
 REGULATOR_CONSUMER(ldo5, NULL, "vcc cam");
 REGULATOR_CONSUMER(ldo10, &pxa_device_mci.dev, "vcc sdio");
 REGULATOR_CONSUMER(ldo12, NULL, "vcc usb");
-REGULATOR_CONSUMER(ldo19, NULL, "vcc gprs");
+REGULATOR_CONSUMER(ldo19, &em_x270_gprs_userspace_consumer.dev, "vcc gprs");
 
 #define REGULATOR_INIT(_ldo, _min_uV, _max_uV, _ops_mask)               \
         static struct regulator_init_data _ldo##_data = {               \
@@ -1062,6 +1109,7 @@ REGULATOR_CONSUMER(ldo19, NULL, "vcc gprs");
                                 .enabled = 0,                           \
                         },                                              \
                         .valid_ops_mask = _ops_mask,                    \
+                        .apply_uV = 1,                                  \
                 },                                                      \
                 .num_consumer_supplies = ARRAY_SIZE(_ldo##_consumers),  \
                 .consumer_supplies = _ldo##_consumers,                  \
@@ -1240,6 +1288,7 @@ static void __init em_x270_init(void)
         em_x270_init_spi();
         em_x270_init_i2c();
         em_x270_init_camera();
+        em_x270_userspace_consumers_init();
 }
 
 MACHINE_START(EM_X270, "Compulab EM-X270")