diff options
Diffstat (limited to 'arch/arm/mach-mx5/mx51_babbage_pmic_mc13892.c')
| -rw-r--r-- | arch/arm/mach-mx5/mx51_babbage_pmic_mc13892.c | 436 |
1 files changed, 436 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/mx51_babbage_pmic_mc13892.c b/arch/arm/mach-mx5/mx51_babbage_pmic_mc13892.c new file mode 100644 index 000000000000..1d5a06bfb5f4 --- /dev/null +++ b/arch/arm/mach-mx5/mx51_babbage_pmic_mc13892.c @@ -0,0 +1,436 @@ +/* + * mx51-babbage-pmic-mc13892.c -- i.MX51 Babbage Driver for Atlas MC13892 PMIC + */ + /* + * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. + */ + + /* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/spi/spi.h> +#include <linux/err.h> +#include <linux/pmic_external.h> +#include <linux/regulator/machine.h> +#include <linux/mfd/mc13892/core.h> +#include <mach/irqs.h> +#include <mach/hardware.h> +#include <mach/iomux-mx51.h> + +/* + * Convenience conversion. + * Here atm, maybe there is somewhere better for this. + */ +#define mV_to_uV(mV) (mV * 1000) +#define uV_to_mV(uV) (uV / 1000) +#define V_to_uV(V) (mV_to_uV(V * 1000)) +#define uV_to_V(uV) (uV_to_mV(uV) / 1000) + +/* Coin cell charger enable */ +#define COINCHEN_LSH 23 +#define COINCHEN_WID 1 +/* Coin cell charger voltage setting */ +#define VCOIN_LSH 20 +#define VCOIN_WID 3 + +/* Coin Charger voltage */ +#define VCOIN_2_5V 0x0 +#define VCOIN_2_7V 0x1 +#define VCOIN_2_8V 0x2 +#define VCOIN_2_9V 0x3 +#define VCOIN_3_0V 0x4 +#define VCOIN_3_1V 0x5 +#define VCOIN_3_2V 0x6 +#define VCOIN_3_3V 0x7 + +/* Keeps VSRTC and CLK32KMCU on for all states */ +#define DRM_LSH 4 +#define DRM_WID 1 + +/* regulator standby mask */ +#define GEN1_STBY_MASK (1 << 1) +#define IOHI_STBY_MASK (1 << 4) +#define DIG_STBY_MASK (1 << 10) +#define GEN2_STBY_MASK (1 << 13) +#define PLL_STBY_MASK (1 << 16) +#define USB2_STBY_MASK (1 << 19) + +#define GEN3_STBY_MASK (1 << 1) +#define CAM_STBY_MASK (1 << 7) +#define VIDEO_STBY_MASK (1 << 13) +#define AUDIO_STBY_MASK (1 << 16) +#define SD_STBY_MASK (1 << 19) + +/* 0x92412 */ +#define REG_MODE_0_ALL_MASK (GEN1_STBY_MASK |\ + DIG_STBY_MASK | GEN2_STBY_MASK |\ + PLL_STBY_MASK) +/* 0x92082 */ +#define REG_MODE_1_ALL_MASK (CAM_STBY_MASK | VIDEO_STBY_MASK |\ + AUDIO_STBY_MASK | SD_STBY_MASK) + +/* switch mode setting */ +#define SW1MODE_LSB 0 +#define SW2MODE_LSB 10 +#define SW3MODE_LSB 0 +#define SW4MODE_LSB 8 + +#define SWMODE_MASK 0xF +#define SWMODE_AUTO 0x8 + +/* CPU */ +static struct regulator_consumer_supply sw1_consumers[] = { + { + .supply = "cpu_vcc", + } +}; + +static struct regulator_consumer_supply vdig_consumers[] = { + { + /* sgtl5000 */ + .supply = "VDDA", + .dev_name = "1-000a", + }, +}; + +static struct regulator_consumer_supply vvideo_consumers[] = { + { + /* sgtl5000 */ + .supply = "VDDIO", + .dev_name = "1-000a", + }, +}; + +struct mc13892; + +static struct regulator_init_data sw1_init = { + .constraints = { + .name = "SW1", + .min_uV = mV_to_uV(600), + .max_uV = mV_to_uV(1375), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, + .valid_modes_mask = 0, + .always_on = 1, + .boot_on = 1, + .initial_state = PM_SUSPEND_MEM, + .state_mem = { + .uV = 850000, + .mode = REGULATOR_MODE_NORMAL, + .enabled = 1, + }, + }, + .num_consumer_supplies = ARRAY_SIZE(sw1_consumers), + .consumer_supplies = sw1_consumers, +}; + +static struct regulator_init_data sw2_init = { + .constraints = { + .name = "SW2", + .min_uV = mV_to_uV(900), + .max_uV = mV_to_uV(1850), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, + .always_on = 1, + .boot_on = 1, + .initial_state = PM_SUSPEND_MEM, + .state_mem = { + .uV = 950000, + .mode = REGULATOR_MODE_NORMAL, + .enabled = 1, + }, + } +}; + +static struct regulator_init_data sw3_init = { + .constraints = { + .name = "SW3", + .min_uV = mV_to_uV(1100), + .max_uV = mV_to_uV(1850), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, + .always_on = 1, + .boot_on = 1, + } +}; + +static struct regulator_init_data sw4_init = { + .constraints = { + .name = "SW4", + .min_uV = mV_to_uV(1100), + .max_uV = mV_to_uV(1850), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, + .always_on = 1, + .boot_on = 1, + } +}; + +static struct regulator_init_data viohi_init = { + .constraints = { + .name = "VIOHI", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + .always_on = 1, + .boot_on = 1, + } +}; + +static struct regulator_init_data vusb_init = { + .constraints = { + .name = "VUSB", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + .boot_on = 1, + .always_on = 1, + } +}; + +static struct regulator_init_data swbst_init = { + .constraints = { + .name = "SWBST", + } +}; + +static struct regulator_init_data vdig_init = { + .constraints = { + .name = "VDIG", + .min_uV = mV_to_uV(1650), + .max_uV = mV_to_uV(1650), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .boot_on = 1, + }, + .num_consumer_supplies = ARRAY_SIZE(vdig_consumers), + .consumer_supplies = vdig_consumers, +}; + +static struct regulator_init_data vpll_init = { + .constraints = { + .name = "VPLL", + .min_uV = mV_to_uV(1050), + .max_uV = mV_to_uV(1800), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .boot_on = 1, + .always_on = 1, + } +}; + +static struct regulator_init_data vusb2_init = { + .constraints = { + .name = "VUSB2", + .min_uV = mV_to_uV(2400), + .max_uV = mV_to_uV(2775), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .boot_on = 1, + .always_on = 1, + } +}; + +static struct regulator_init_data vvideo_init = { + .constraints = { + .name = "VVIDEO", + .min_uV = mV_to_uV(2775), + .max_uV = mV_to_uV(2775), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .apply_uV = 1, + }, + .num_consumer_supplies = ARRAY_SIZE(vvideo_consumers), + .consumer_supplies = vvideo_consumers, +}; + +static struct regulator_init_data vaudio_init = { + .constraints = { + .name = "VAUDIO", + .min_uV = mV_to_uV(2300), + .max_uV = mV_to_uV(3000), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data vsd_init = { + .constraints = { + .name = "VSD", + .min_uV = mV_to_uV(1800), + .max_uV = mV_to_uV(3150), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data vcam_init = { + .constraints = { + .name = "VCAM", + .min_uV = mV_to_uV(2500), + .max_uV = mV_to_uV(3000), + .valid_ops_mask = + REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_MODE | + REGULATOR_CHANGE_STATUS, + .valid_modes_mask = REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL, + } +}; + +static struct regulator_init_data vgen1_init = { + .constraints = { + .name = "VGEN1", + .min_uV = mV_to_uV(1200), + .max_uV = mV_to_uV(1200), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data vgen2_init = { + .constraints = { + .name = "VGEN2", + .min_uV = mV_to_uV(1200), + .max_uV = mV_to_uV(3150), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .always_on = 1, + } +}; + +static struct regulator_init_data vgen3_init = { + .constraints = { + .name = "VGEN3", + .min_uV = mV_to_uV(1800), + .max_uV = mV_to_uV(2900), + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | + REGULATOR_CHANGE_STATUS, + .always_on = 1, + } +}; + +static struct regulator_init_data gpo1_init = { + .constraints = { + .name = "GPO1", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data gpo2_init = { + .constraints = { + .name = "GPO2", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data gpo3_init = { + .constraints = { + .name = "GPO3", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + } +}; + +static struct regulator_init_data gpo4_init = { + .constraints = { + .name = "GPO4", + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + } +}; + +static int mc13892_regulator_init(struct mc13892 *mc13892) +{ + unsigned int value, register_mask; + printk("Initializing regulators for Babbage.\n"); + if (mxc_cpu_is_rev(CHIP_REV_2_0) < 0) + sw2_init.constraints.state_mem.uV = 1100000; + else if (mxc_cpu_is_rev(CHIP_REV_2_0) == 1) { + sw2_init.constraints.state_mem.uV = 1250000; + sw1_init.constraints.state_mem.uV = 1000000; + } + + /* enable standby controll for all regulators */ + pmic_read_reg(REG_MODE_0, &value, 0xffffff); + value |= REG_MODE_0_ALL_MASK; + pmic_write_reg(REG_MODE_0, value, 0xffffff); + + pmic_read_reg(REG_MODE_1, &value, 0xffffff); + value |= REG_MODE_1_ALL_MASK; + pmic_write_reg(REG_MODE_1, value, 0xffffff); + + /* enable switch audo mode */ + pmic_read_reg(REG_IDENTIFICATION, &value, 0xffffff); + /* only for mc13892 2.0A */ + if ((value & 0x0000FFFF) == 0x45d0) { + pmic_read_reg(REG_SW_4, &value, 0xffffff); + register_mask = (SWMODE_MASK << SW1MODE_LSB) | + (SWMODE_MASK << SW2MODE_LSB); + value &= ~register_mask; + value |= (SWMODE_AUTO << SW1MODE_LSB) | + (SWMODE_AUTO << SW2MODE_LSB); + pmic_write_reg(REG_SW_4, value, 0xffffff); + + pmic_read_reg(REG_SW_5, &value, 0xffffff); + register_mask = (SWMODE_MASK << SW3MODE_LSB) | + (SWMODE_MASK << SW4MODE_LSB); + value &= ~register_mask; + value |= (SWMODE_AUTO << SW3MODE_LSB) | + (SWMODE_AUTO << SW4MODE_LSB); + pmic_write_reg(REG_SW_5, value, 0xffffff); + } + + /* Enable coin cell charger */ + value = BITFVAL(COINCHEN, 1) | BITFVAL(VCOIN, VCOIN_3_0V); + register_mask = BITFMASK(COINCHEN) | BITFMASK(VCOIN); + pmic_write_reg(REG_POWER_CTL0, value, register_mask); + +#if defined(CONFIG_RTC_DRV_MXC_V2) || defined(CONFIG_RTC_DRV_MXC_V2_MODULE) + value = BITFVAL(DRM, 1); + register_mask = BITFMASK(DRM); + pmic_write_reg(REG_POWER_CTL0, value, register_mask); +#endif + + mc13892_register_regulator(mc13892, MC13892_SW1, &sw1_init); + mc13892_register_regulator(mc13892, MC13892_SW2, &sw2_init); + mc13892_register_regulator(mc13892, MC13892_SW3, &sw3_init); + mc13892_register_regulator(mc13892, MC13892_SW4, &sw4_init); + mc13892_register_regulator(mc13892, MC13892_SWBST, &swbst_init); + mc13892_register_regulator(mc13892, MC13892_VIOHI, &viohi_init); + mc13892_register_regulator(mc13892, MC13892_VPLL, &vpll_init); + mc13892_register_regulator(mc13892, MC13892_VDIG, &vdig_init); + mc13892_register_regulator(mc13892, MC13892_VSD, &vsd_init); + mc13892_register_regulator(mc13892, MC13892_VUSB2, &vusb2_init); + mc13892_register_regulator(mc13892, MC13892_VVIDEO, &vvideo_init); + mc13892_register_regulator(mc13892, MC13892_VAUDIO, &vaudio_init); + mc13892_register_regulator(mc13892, MC13892_VCAM, &vcam_init); + mc13892_register_regulator(mc13892, MC13892_VGEN1, &vgen1_init); + mc13892_register_regulator(mc13892, MC13892_VGEN2, &vgen2_init); + mc13892_register_regulator(mc13892, MC13892_VGEN3, &vgen3_init); + mc13892_register_regulator(mc13892, MC13892_VUSB, &vusb_init); + mc13892_register_regulator(mc13892, MC13892_GPO1, &gpo1_init); + mc13892_register_regulator(mc13892, MC13892_GPO2, &gpo2_init); + mc13892_register_regulator(mc13892, MC13892_GPO3, &gpo3_init); + mc13892_register_regulator(mc13892, MC13892_GPO4, &gpo4_init); + + regulator_has_full_constraints(); + + return 0; +} + +static struct mc13892_platform_data mc13892_plat = { + .init = mc13892_regulator_init, +}; + +static struct spi_board_info __initdata mc13892_spi_device = { + .modalias = "pmic_spi", + .irq = IOMUX_TO_IRQ_V3(8), + .max_speed_hz = 6000000, /* max spi SCK clock speed in HZ */ + .bus_num = 1, + .chip_select = 0, + .platform_data = &mc13892_plat, +}; + + +int __init mx51_babbage_init_mc13892(void) +{ + return spi_register_board_info(&mc13892_spi_device, 1); +} |