diff options
author | Arnd Bergmann <arnd@arndb.de> | 2013-06-20 01:51:18 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2013-06-20 01:51:18 +0200 |
commit | c3b693d1d63444afe4fbf809d8a311b63741e503 (patch) | |
tree | 5c0c264203967f1524ac28645f0b5cea57b624bc /arch/arm/mach-u300/regulator.c | |
parent | 596fd95ea606548adaa8310a7c05a6dcfec46f16 (diff) | |
parent | 7fca1f20c0f3e9d7a3b23ee1fc9e832f520f3f1a (diff) |
Merge tag 'u300-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/soc
From Linus Walleij:
Device Tree and Multiplatform support for U300:
- Add devicetree support to timer, pinctrl (probe), I2C block,
watchdog, DMA controller and clocks.
- Piecewise add a device tree containing all peripherals.
- Delete the ATAG boot path.
- Delete redundant platform data and board files.
- Convert to multiplatform.
* tag 'u300-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: (40 commits)
ARM: u300: switch to using syscon regmap for board
ARM: u300: Update MMC configs for u300 defconfig
spi: pl022: use DMA by default when probing from DT
pinctrl: get rid of all platform data for coh901
ARM: u300: convert MMC/SD clock to device tree
ARM: u300: move the gated system controller clocks to DT
i2c: stu300: do not request a specific clock name
clk: move the U300 fixed and fixed-factor to DT
ARM: u300: remove register definition file
ARM: u300: add syscon node
ARM: u300 use module_spi_driver to register driver
ARM: u300: delete remnant machine headers
ARM: u300: convert to multiplatform
ARM: u300: localize <mach/u300-regs.h>
ARM: u300: delete <mach/irqs.h>
ARM: u300: delete <mach/hardware.h>
ARM: u300: push down syscon registers
ARM: u300: remove deps from debug macro
ARM: u300: move debugmacro to debug includes
ARM: u300: delete all static board data
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-u300/regulator.c')
-rw-r--r-- | arch/arm/mach-u300/regulator.c | 67 |
1 files changed, 56 insertions, 11 deletions
diff --git a/arch/arm/mach-u300/regulator.c b/arch/arm/mach-u300/regulator.c index 9c53f01c62eb..bf40cd478fe9 100644 --- a/arch/arm/mach-u300/regulator.c +++ b/arch/arm/mach-u300/regulator.c @@ -10,11 +10,18 @@ #include <linux/device.h> #include <linux/signal.h> #include <linux/err.h> +#include <linux/of.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regulator/machine.h> #include <linux/regulator/consumer.h> -/* Those are just for writing in syscon */ -#include <linux/io.h> -#include <mach/hardware.h> -#include <mach/syscon.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> + +/* Power Management Control 16bit (R/W) */ +#define U300_SYSCON_PMCR (0x50) +#define U300_SYSCON_PMCR_DCON_ENABLE (0x0002) +#define U300_SYSCON_PMCR_PWR_MGNT_ENABLE (0x0001) /* * Regulators that power the board and chip and which are @@ -47,13 +54,28 @@ void u300_pm_poweroff(void) /* * Hog the regulators needed to power up the board. */ -static int __init u300_init_boardpower(void) +static int __init __u300_init_boardpower(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; + struct device_node *syscon_np; + struct regmap *regmap; int err; - u32 val; pr_info("U300: setting up board power\n"); - main_power_15 = regulator_get(NULL, "vana15"); + + syscon_np = of_parse_phandle(np, "syscon", 0); + if (!syscon_np) { + pr_crit("U300: no syscon node\n"); + return -ENODEV; + } + regmap = syscon_node_to_regmap(syscon_np); + if (!regmap) { + pr_crit("U300: could not locate syscon regmap\n"); + return -ENODEV; + } + + main_power_15 = regulator_get(&pdev->dev, "vana15"); + if (IS_ERR(main_power_15)) { pr_err("could not get vana15"); return PTR_ERR(main_power_15); @@ -72,9 +94,8 @@ static int __init u300_init_boardpower(void) * the rest of the U300 power management is implemented. */ pr_info("U300: disable system controller pull-up\n"); - val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMCR); - val &= ~U300_SYSCON_PMCR_DCON_ENABLE; - writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMCR); + regmap_update_bits(regmap, U300_SYSCON_PMCR, + U300_SYSCON_PMCR_DCON_ENABLE, 0); /* Register globally exported PM poweroff hook */ pm_power_off = u300_pm_poweroff; @@ -82,7 +103,31 @@ static int __init u300_init_boardpower(void) return 0; } +static int __init s365_board_probe(struct platform_device *pdev) +{ + return __u300_init_boardpower(pdev); +} + +static const struct of_device_id s365_board_match[] = { + { .compatible = "stericsson,s365" }, + {}, +}; + +static struct platform_driver s365_board_driver = { + .driver = { + .name = "s365-board", + .owner = THIS_MODULE, + .of_match_table = s365_board_match, + }, +}; + /* * So at module init time we hog the regulator! */ -module_init(u300_init_boardpower); +static int __init u300_init_boardpower(void) +{ + return platform_driver_probe(&s365_board_driver, + s365_board_probe); +} + +device_initcall(u300_init_boardpower); |