Add fixed regulator to enable basic audio-support until full regulator support is done.
Signed-off-by: Wolfram Sang w.sang@pengutronix.de Cc: Dong Aisheng b29396@freescale.com ---
Aisheng: This is the other patch (together with [1]) making the sgtl-hack obsolete. Needs fixed regulators, of course.
[1] http://mailman.alsa-project.org/pipermail/alsa-devel/2011-July/041974.html
arch/arm/mach-mxs/mach-mx28evk.c | 42 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c index f99fc6b..edab588 100644 --- a/arch/arm/mach-mxs/mach-mx28evk.c +++ b/arch/arm/mach-mxs/mach-mx28evk.c @@ -19,6 +19,8 @@ #include <linux/irq.h> #include <linux/clk.h> #include <linux/i2c.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/fixed.h>
#include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -379,6 +381,44 @@ static struct i2c_board_info mxs_i2c0_board_info[] __initdata = { }, };
+#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE) +static struct regulator_consumer_supply mx28evk_audio_consumer_supplies[] = { + REGULATOR_SUPPLY("VDDA", "0-000a"), + REGULATOR_SUPPLY("VDDIO", "0-000a"), +}; + +static struct regulator_init_data mx28evk_vdd_reg_init_data = { + .constraints = { + .name = "3V3", + .always_on = 1, + }, + .consumer_supplies = mx28evk_audio_consumer_supplies, + .num_consumer_supplies = ARRAY_SIZE(mx28evk_audio_consumer_supplies), +}; + +static struct fixed_voltage_config mx28evk_vdd_pdata = { + .supply_name = "board-3V3", + .microvolts = 3300000, + .gpio = -EINVAL, + .enabled_at_boot = 1, + .init_data = &mx28evk_vdd_reg_init_data, +}; +static struct platform_device mx28evk_voltage_regulator = { + .name = "reg-fixed-voltage", + .id = -1, + .num_resources = 0, + .dev = { + .platform_data = &mx28evk_vdd_pdata, + }, +}; +static void __init mx28evk_add_regulators(void) +{ + platform_device_register(&mx28evk_voltage_regulator); +} +#else +static void __init mx28evk_add_regulators(void) {} +#endif + static void __init mx28evk_init(void) { int ret; @@ -426,6 +466,8 @@ static void __init mx28evk_init(void) i2c_register_board_info(0, mxs_i2c0_board_info, ARRAY_SIZE(mxs_i2c0_board_info));
+ mx28evk_add_regulators(); + mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0, NULL, 0);