ARM: OMAP2+: gpmc-smsc911x: add required smsc911x regulators

This fixes smsc911x support on platforms using gpmc_smsc911x_init().

Commit c7e963f6888816 (net/smsc911x: Add regulator support) added
the requirement that platforms provide vdd33a and vddvario supplies.

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/gpmc-smsc911x.c b/arch/arm/mach-omap2/gpmc-smsc911x.c
index 997033129d26..bbb870c04a5e 100644
--- a/arch/arm/mach-omap2/gpmc-smsc911x.c
+++ b/arch/arm/mach-omap2/gpmc-smsc911x.c
@@ -19,6 +19,8 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/smsc911x.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
 
 #include <plat/board.h>
 #include <plat/gpmc.h>
@@ -42,6 +44,50 @@ static struct smsc911x_platform_config gpmc_smsc911x_config = {
         .flags          = SMSC911X_USE_16BIT,
 };
 
+static struct regulator_consumer_supply gpmc_smsc911x_supply[] = {
+        REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
+        REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
+};
+
+/* Generic regulator definition to satisfy smsc911x */
+static struct regulator_init_data gpmc_smsc911x_reg_init_data = {
+        .constraints = {
+                .min_uV                 = 3300000,
+                .max_uV                 = 3300000,
+                .valid_modes_mask       = REGULATOR_MODE_NORMAL
+                                        | REGULATOR_MODE_STANDBY,
+                .valid_ops_mask         = REGULATOR_CHANGE_MODE
+                                        | REGULATOR_CHANGE_STATUS,
+        },
+        .num_consumer_supplies  = ARRAY_SIZE(gpmc_smsc911x_supply),
+        .consumer_supplies      = gpmc_smsc911x_supply,
+};
+
+static struct fixed_voltage_config gpmc_smsc911x_fixed_reg_data = {
+        .supply_name            = "gpmc_smsc911x",
+        .microvolts             = 3300000,
+        .gpio                   = -EINVAL,
+        .startup_delay          = 0,
+        .enable_high            = 0,
+        .enabled_at_boot        = 1,
+        .init_data              = &gpmc_smsc911x_reg_init_data,
+};
+
+/*
+ * Platform device id of 42 is a temporary fix to avoid conflicts
+ * with other reg-fixed-voltage devices. The real fix should
+ * involve the driver core providing a way of dynamically
+ * assigning a unique id on registration for platform devices
+ * in the same name space.
+ */
+static struct platform_device gpmc_smsc911x_regulator = {
+        .name           = "reg-fixed-voltage",
+        .id             = 42,
+        .dev = {
+                .platform_data  = &gpmc_smsc911x_fixed_reg_data,
+        },
+};
+
 /*
  * Initialize smsc911x device connected to the GPMC. Note that we
  * assume that pin multiplexing is done in the board-*.c file,
@@ -55,6 +101,12 @@ void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
 
         gpmc_cfg = board_data;
 
+        ret = platform_device_register(&gpmc_smsc911x_regulator);
+        if (ret < 0) {
+                pr_err("Unable to register smsc911x regulators: %d\n", ret);
+                return;
+        }
+
         if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
                 pr_err("Failed to request GPMC mem region\n");
                 return;