Subject: [PATCH 7/8] ARM: ux500: Use the GPIO regulator framework for SDI0's 'en' and 'vsel'

From: [email-masked] (Lee Jones)
Date: Mon, 21 Jan 2013 13:11:55 +0000

On Thu, 13 Dec 2012, Ulf Hansson wrote:

> On 13 December 2012 14:22, Lee Jones <[email-masked]> wrote:
> > To prevent lots of unnecessary call-backs into platform code, we're
> > now using the GPIO regulator framework to control the 'enable' (en)
> > and 'voltage select' (vsel) GPIO pins which in turn control the
> > MMCI's secondary regulator settings. This already works with Device
> > Tree, but when booting with ATAGs we need to register it as a
> > platform device.
> >
> > Signed-off-by: Lee Jones <[email-masked]>

What's the latest on these Ulf? Have they been taken in yet? 

> >  arch/arm/mach-ux500/board-mop500-regulators.c |   14 ++++++++
> >  arch/arm/mach-ux500/board-mop500-regulators.h |    1 +
> >  arch/arm/mach-ux500/board-mop500.c            |   44 +++++++++++++++++++++++++
> >  3 files changed, 59 insertions(+)
> >
> > diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c
> > index 2a17bc5..cb75405 100644
> > --- a/arch/arm/mach-ux500/board-mop500-regulators.c
> > +++ b/arch/arm/mach-ux500/board-mop500-regulators.c
> > @@ -28,6 +28,20 @@ struct regulator_init_data gpio_en_3v3_regulator = {
> >         .consumer_supplies = gpio_en_3v3_consumers,
> >  };
> >
> > +static struct regulator_consumer_supply sdi0_reg_consumers[] = {
> > +        REGULATOR_SUPPLY("vqmmc", "sdi0"),
> > +};
> > +
> > +struct regulator_init_data sdi0_reg_init_data = {
> > +        .constraints = {
> > +                .min_uV         = 1800000,
> > +                .max_uV         = 2900000,
> > +                .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE|REGULATOR_CHANGE_STATUS,
> > +        },
> > +        .num_consumer_supplies  = ARRAY_SIZE(sdi0_reg_consumers),
> > +        .consumer_supplies      = sdi0_reg_consumers,
> > +};
> > +
> >  /*
> >   * TPS61052 regulator
> >   */
> > diff --git a/arch/arm/mach-ux500/board-mop500-regulators.h b/arch/arm/mach-ux500/board-mop500-regulators.h
> > index 78a0642..0c79d90 100644
> > --- a/arch/arm/mach-ux500/board-mop500-regulators.h
> > +++ b/arch/arm/mach-ux500/board-mop500-regulators.h
> > @@ -19,5 +19,6 @@ ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS];
> >  extern struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS];
> >  extern struct regulator_init_data tps61052_regulator;
> >  extern struct regulator_init_data gpio_en_3v3_regulator;
> > +extern struct regulator_init_data sdi0_reg_init_data;
> >
> >  #endif
> > diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
> > index daa4237..e934176 100644
> > --- a/arch/arm/mach-ux500/board-mop500.c
> > +++ b/arch/arm/mach-ux500/board-mop500.c
> > @@ -24,6 +24,8 @@
> >  #include <linux/mfd/abx500/ab8500.h>
> >  #include <linux/regulator/ab8500.h>
> >  #include <linux/regulator/fixed.h>
> > +#include <linux/regulator/driver.h>
> > +#include <linux/regulator/gpio-regulator.h>
> >  #include <linux/mfd/tc3589x.h>
> >  #include <linux/mfd/tps6105x.h>
> >  #include <linux/mfd/abx500/ab8500-gpio.h>
> > @@ -91,6 +93,37 @@ static struct platform_device snowball_gpio_en_3v3_regulator_dev = {
> >         },
> >  };
> >
> > +/* Dynamically populated. */
> > +static struct gpio sdi0_reg_gpios[] = {
> > +        { 0, GPIOF_OUT_INIT_LOW, "mmci_vsel" },
> > +};
> > +
> > +static struct gpio_regulator_state sdi0_reg_states[] = {
> > +        { .value = 2900000, .gpios = (0 << 0) },
> > +        { .value = 1800000, .gpios = (1 << 0) },
> > +};
> > +
> > +static struct gpio_regulator_config sdi0_reg_info = {
> > +       .supply_name           = "ext-mmc-level-shifter",
> > +       .gpios                 = sdi0_reg_gpios,
> > +       .nr_gpios              = ARRAY_SIZE(sdi0_reg_gpios),
> > +       .states                = sdi0_reg_states,
> > +       .nr_states             = ARRAY_SIZE(sdi0_reg_states),
> > +       .type                  = REGULATOR_VOLTAGE,
> > +       .enable_high           = 1,
> > +       .enabled_at_boot       = 0,
> > +       .init_data             = &sdi0_reg_init_data,
> > +       .startup_delay         = 100,
> > +};
> > +
> > +static struct platform_device sdi0_regulator = {
> > +        .name = "gpio-regulator",
> > +        .id   = -1,
> > +        .dev  = {
> > +                .platform_data = &sdi0_reg_info,
> > +        },
> > +};
> > +
> >  static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
> >         .gpio_base              = MOP500_AB8500_PIN_GPIO(1),
> >         .irq_base               = MOP500_AB8500_VIR_GPIO_IRQ_BASE,
> > @@ -440,6 +473,7 @@ static struct hash_platform_data u8500_hash1_platform_data = {
> >  /* add any platform devices here - TODO */
> >  static struct platform_device *mop500_platform_devs[] __initdata = {
> >         &mop500_gpio_keys_device,
> > +       &sdi0_regulator,
> >  };
> >
> >  #ifdef CONFIG_STE_DMA40
> > @@ -581,6 +615,7 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
> >         &snowball_key_dev,
> >         &snowball_sbnet_dev,
> >         &snowball_gpio_en_3v3_regulator_dev,
> > +       &sdi0_regulator,
> >  };
> >
> >  static void __init mop500_init_machine(void)
> > @@ -591,6 +626,9 @@ static void __init mop500_init_machine(void)
> >
> >         mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
> >
> > +       sdi0_reg_info.enable_gpio = GPIO_SDMMC_EN;
> > +       sdi0_reg_info.gpios[0].gpio = GPIO_SDMMC_1V8_3V_SEL;
> > +
> >         mop500_pinmaps_init();
> >         parent = u8500_init_devices(&ab8500_platdata);
> >
> > @@ -623,6 +661,9 @@ static void __init snowball_init_machine(void)
> >         struct device *parent = NULL;
> >         int i;
> >
> > +       sdi0_reg_info.enable_gpio = SNOWBALL_SDMMC_EN_GPIO;
> > +       sdi0_reg_info.gpios[0].gpio = SNOWBALL_SDMMC_1V8_3V_GPIO;
> > +
> >         snowball_pinmaps_init();
> >         parent = u8500_init_devices(&ab8500_platdata);
> >
> > @@ -655,6 +696,9 @@ static void __init hrefv60_init_machine(void)
> >          */
> >         mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO;
> >
> > +       sdi0_reg_info.enable_gpio = HREFV60_SDMMC_EN_GPIO;
> > +       sdi0_reg_info.gpios[0].gpio = HREFV60_SDMMC_1V8_3V_GPIO;
> > +
> >         hrefv60_pinmaps_init();
> >         parent = u8500_init_devices(&ab8500_platdata);
> >
> >
> 
> 
> Acked-by: Ulf Hansson <[email-masked]>

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
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