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543 lines
13 KiB
543 lines
13 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* tps65910.c -- TI TPS6591x chip family multi-function driver |
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* |
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* Copyright 2010 Texas Instruments Inc. |
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* |
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* Author: Graeme Gregory <[email protected]> |
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* Author: Jorge Eduardo Candelaria <[email protected]> |
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*/ |
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|
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/slab.h> |
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#include <linux/i2c.h> |
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#include <linux/interrupt.h> |
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#include <linux/irq.h> |
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#include <linux/irqdomain.h> |
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#include <linux/mfd/core.h> |
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#include <linux/regmap.h> |
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#include <linux/mfd/tps65910.h> |
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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static const struct resource rtc_resources[] = { |
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{ |
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.start = TPS65910_IRQ_RTC_ALARM, |
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.end = TPS65910_IRQ_RTC_ALARM, |
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.flags = IORESOURCE_IRQ, |
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} |
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}; |
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static const struct mfd_cell tps65910s[] = { |
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{ |
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.name = "tps65910-gpio", |
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}, |
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{ |
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.name = "tps65910-pmic", |
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}, |
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{ |
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.name = "tps65910-rtc", |
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.num_resources = ARRAY_SIZE(rtc_resources), |
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.resources = &rtc_resources[0], |
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}, |
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{ |
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.name = "tps65910-power", |
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}, |
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}; |
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static const struct regmap_irq tps65911_irqs[] = { |
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/* INT_STS */ |
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[TPS65911_IRQ_PWRHOLD_F] = { |
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.mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_VBAT_VMHI] = { |
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.mask = INT_MSK_VMBHI_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_PWRON] = { |
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.mask = INT_MSK_PWRON_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_PWRON_LP] = { |
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.mask = INT_MSK_PWRON_LP_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_PWRHOLD_R] = { |
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.mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_HOTDIE] = { |
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.mask = INT_MSK_HOTDIE_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_RTC_ALARM] = { |
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.mask = INT_MSK_RTC_ALARM_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65911_IRQ_RTC_PERIOD] = { |
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.mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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/* INT_STS2 */ |
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[TPS65911_IRQ_GPIO0_R] = { |
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.mask = INT_MSK2_GPIO0_R_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO0_F] = { |
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.mask = INT_MSK2_GPIO0_F_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO1_R] = { |
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.mask = INT_MSK2_GPIO1_R_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO1_F] = { |
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.mask = INT_MSK2_GPIO1_F_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO2_R] = { |
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.mask = INT_MSK2_GPIO2_R_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO2_F] = { |
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.mask = INT_MSK2_GPIO2_F_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO3_R] = { |
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.mask = INT_MSK2_GPIO3_R_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65911_IRQ_GPIO3_F] = { |
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.mask = INT_MSK2_GPIO3_F_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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/* INT_STS2 */ |
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[TPS65911_IRQ_GPIO4_R] = { |
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.mask = INT_MSK3_GPIO4_R_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_GPIO4_F] = { |
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.mask = INT_MSK3_GPIO4_F_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_GPIO5_R] = { |
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.mask = INT_MSK3_GPIO5_R_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_GPIO5_F] = { |
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.mask = INT_MSK3_GPIO5_F_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_WTCHDG] = { |
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.mask = INT_MSK3_WTCHDG_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_VMBCH2_H] = { |
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.mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_VMBCH2_L] = { |
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.mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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[TPS65911_IRQ_PWRDN] = { |
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.mask = INT_MSK3_PWRDN_IT_MSK_MASK, |
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.reg_offset = 2, |
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}, |
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}; |
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static const struct regmap_irq tps65910_irqs[] = { |
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/* INT_STS */ |
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[TPS65910_IRQ_VBAT_VMBDCH] = { |
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.mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_VBAT_VMHI] = { |
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.mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_PWRON] = { |
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.mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_PWRON_LP] = { |
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.mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_PWRHOLD] = { |
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.mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_HOTDIE] = { |
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.mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_RTC_ALARM] = { |
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.mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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[TPS65910_IRQ_RTC_PERIOD] = { |
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.mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK, |
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.reg_offset = 0, |
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}, |
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/* INT_STS2 */ |
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[TPS65910_IRQ_GPIO_R] = { |
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.mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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[TPS65910_IRQ_GPIO_F] = { |
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.mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK, |
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.reg_offset = 1, |
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}, |
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}; |
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static struct regmap_irq_chip tps65911_irq_chip = { |
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.name = "tps65910", |
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.irqs = tps65911_irqs, |
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.num_irqs = ARRAY_SIZE(tps65911_irqs), |
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.num_regs = 3, |
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.irq_reg_stride = 2, |
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.status_base = TPS65910_INT_STS, |
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.mask_base = TPS65910_INT_MSK, |
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.ack_base = TPS65910_INT_STS, |
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}; |
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static struct regmap_irq_chip tps65910_irq_chip = { |
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.name = "tps65910", |
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.irqs = tps65910_irqs, |
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.num_irqs = ARRAY_SIZE(tps65910_irqs), |
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.num_regs = 2, |
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.irq_reg_stride = 2, |
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.status_base = TPS65910_INT_STS, |
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.mask_base = TPS65910_INT_MSK, |
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.ack_base = TPS65910_INT_STS, |
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}; |
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static int tps65910_irq_init(struct tps65910 *tps65910, int irq, |
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struct tps65910_platform_data *pdata) |
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{ |
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int ret; |
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static struct regmap_irq_chip *tps6591x_irqs_chip; |
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if (!irq) { |
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dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n"); |
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return -EINVAL; |
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} |
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if (!pdata) { |
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dev_warn(tps65910->dev, "No interrupt support, no pdata\n"); |
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return -EINVAL; |
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} |
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switch (tps65910_chip_id(tps65910)) { |
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case TPS65910: |
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tps6591x_irqs_chip = &tps65910_irq_chip; |
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break; |
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case TPS65911: |
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tps6591x_irqs_chip = &tps65911_irq_chip; |
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break; |
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} |
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tps65910->chip_irq = irq; |
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ret = devm_regmap_add_irq_chip(tps65910->dev, tps65910->regmap, |
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tps65910->chip_irq, |
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IRQF_ONESHOT, pdata->irq_base, |
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tps6591x_irqs_chip, &tps65910->irq_data); |
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if (ret < 0) { |
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dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret); |
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tps65910->chip_irq = 0; |
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} |
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return ret; |
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} |
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static bool is_volatile_reg(struct device *dev, unsigned int reg) |
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{ |
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struct tps65910 *tps65910 = dev_get_drvdata(dev); |
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|
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/* |
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* Caching all regulator registers. |
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* All regualator register address range is same for |
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* TPS65910 and TPS65911 |
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*/ |
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if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) { |
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/* Check for non-existing register */ |
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if (tps65910_chip_id(tps65910) == TPS65910) |
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if ((reg == TPS65911_VDDCTRL_OP) || |
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(reg == TPS65911_VDDCTRL_SR)) |
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return true; |
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return false; |
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} |
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return true; |
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} |
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static const struct regmap_config tps65910_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.volatile_reg = is_volatile_reg, |
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.max_register = TPS65910_MAX_REGISTER - 1, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int tps65910_ck32k_init(struct tps65910 *tps65910, |
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struct tps65910_board *pmic_pdata) |
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{ |
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int ret; |
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if (!pmic_pdata->en_ck32k_xtal) |
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return 0; |
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ret = regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL, |
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DEVCTRL_CK32K_CTRL_MASK); |
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if (ret < 0) { |
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dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret); |
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return ret; |
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} |
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return 0; |
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} |
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static int tps65910_sleepinit(struct tps65910 *tps65910, |
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struct tps65910_board *pmic_pdata) |
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{ |
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struct device *dev; |
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int ret; |
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if (!pmic_pdata->en_dev_slp) |
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return 0; |
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dev = tps65910->dev; |
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/* enabling SLEEP device state */ |
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ret = regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL, |
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DEVCTRL_DEV_SLP_MASK); |
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if (ret < 0) { |
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dev_err(dev, "set dev_slp failed: %d\n", ret); |
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goto err_sleep_init; |
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} |
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if (pmic_pdata->slp_keepon.therm_keepon) { |
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ret = regmap_set_bits(tps65910->regmap, |
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TPS65910_SLEEP_KEEP_RES_ON, |
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SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK); |
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if (ret < 0) { |
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dev_err(dev, "set therm_keepon failed: %d\n", ret); |
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goto disable_dev_slp; |
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} |
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} |
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if (pmic_pdata->slp_keepon.clkout32k_keepon) { |
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ret = regmap_set_bits(tps65910->regmap, |
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TPS65910_SLEEP_KEEP_RES_ON, |
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SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK); |
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if (ret < 0) { |
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dev_err(dev, "set clkout32k_keepon failed: %d\n", ret); |
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goto disable_dev_slp; |
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} |
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} |
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if (pmic_pdata->slp_keepon.i2chs_keepon) { |
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ret = regmap_set_bits(tps65910->regmap, |
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TPS65910_SLEEP_KEEP_RES_ON, |
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SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK); |
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if (ret < 0) { |
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dev_err(dev, "set i2chs_keepon failed: %d\n", ret); |
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goto disable_dev_slp; |
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} |
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} |
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return 0; |
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disable_dev_slp: |
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regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL, |
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DEVCTRL_DEV_SLP_MASK); |
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err_sleep_init: |
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return ret; |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id tps65910_of_match[] = { |
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{ .compatible = "ti,tps65910", .data = (void *)TPS65910}, |
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{ .compatible = "ti,tps65911", .data = (void *)TPS65911}, |
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{ }, |
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}; |
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static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, |
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unsigned long *chip_id) |
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{ |
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struct device_node *np = client->dev.of_node; |
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struct tps65910_board *board_info; |
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unsigned int prop; |
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const struct of_device_id *match; |
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int ret; |
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match = of_match_device(tps65910_of_match, &client->dev); |
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if (!match) { |
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dev_err(&client->dev, "Failed to find matching dt id\n"); |
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return NULL; |
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} |
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*chip_id = (unsigned long)match->data; |
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board_info = devm_kzalloc(&client->dev, sizeof(*board_info), |
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GFP_KERNEL); |
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if (!board_info) |
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return NULL; |
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ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop); |
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if (!ret) |
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board_info->vmbch_threshold = prop; |
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ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop); |
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if (!ret) |
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board_info->vmbch2_threshold = prop; |
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prop = of_property_read_bool(np, "ti,en-ck32k-xtal"); |
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board_info->en_ck32k_xtal = prop; |
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prop = of_property_read_bool(np, "ti,sleep-enable"); |
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board_info->en_dev_slp = prop; |
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prop = of_property_read_bool(np, "ti,sleep-keep-therm"); |
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board_info->slp_keepon.therm_keepon = prop; |
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prop = of_property_read_bool(np, "ti,sleep-keep-ck32k"); |
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board_info->slp_keepon.clkout32k_keepon = prop; |
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prop = of_property_read_bool(np, "ti,sleep-keep-hsclk"); |
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board_info->slp_keepon.i2chs_keepon = prop; |
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board_info->irq = client->irq; |
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board_info->irq_base = -1; |
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board_info->pm_off = of_property_read_bool(np, |
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"ti,system-power-controller"); |
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return board_info; |
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} |
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#else |
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static inline |
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struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, |
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unsigned long *chip_id) |
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{ |
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return NULL; |
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} |
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#endif |
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static struct i2c_client *tps65910_i2c_client; |
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static void tps65910_power_off(void) |
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{ |
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struct tps65910 *tps65910; |
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tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev); |
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|
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/* |
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* The PWR_OFF bit needs to be set separately, before transitioning |
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* to the OFF state. It enables the "sequential" power-off mode on |
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* TPS65911, it's a NO-OP on TPS65910. |
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*/ |
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if (regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL, |
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DEVCTRL_PWR_OFF_MASK) < 0) |
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return; |
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regmap_update_bits(tps65910->regmap, TPS65910_DEVCTRL, |
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DEVCTRL_DEV_OFF_MASK | DEVCTRL_DEV_ON_MASK, |
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DEVCTRL_DEV_OFF_MASK); |
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} |
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static int tps65910_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct tps65910 *tps65910; |
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struct tps65910_board *pmic_plat_data; |
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struct tps65910_board *of_pmic_plat_data = NULL; |
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struct tps65910_platform_data *init_data; |
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unsigned long chip_id = id->driver_data; |
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int ret; |
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pmic_plat_data = dev_get_platdata(&i2c->dev); |
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if (!pmic_plat_data && i2c->dev.of_node) { |
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pmic_plat_data = tps65910_parse_dt(i2c, &chip_id); |
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of_pmic_plat_data = pmic_plat_data; |
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} |
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|
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if (!pmic_plat_data) |
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return -EINVAL; |
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init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL); |
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if (init_data == NULL) |
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return -ENOMEM; |
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tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL); |
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if (tps65910 == NULL) |
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return -ENOMEM; |
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tps65910->of_plat_data = of_pmic_plat_data; |
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i2c_set_clientdata(i2c, tps65910); |
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tps65910->dev = &i2c->dev; |
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tps65910->i2c_client = i2c; |
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tps65910->id = chip_id; |
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|
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/* Work around silicon erratum SWCZ010: the tps65910 may miss the |
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* first I2C transfer. So issue a dummy transfer before the first |
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* real transfer. |
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*/ |
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i2c_master_send(i2c, "", 1); |
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tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config); |
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if (IS_ERR(tps65910->regmap)) { |
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ret = PTR_ERR(tps65910->regmap); |
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dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); |
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return ret; |
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} |
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init_data->irq = pmic_plat_data->irq; |
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init_data->irq_base = pmic_plat_data->irq_base; |
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|
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tps65910_irq_init(tps65910, init_data->irq, init_data); |
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tps65910_ck32k_init(tps65910, pmic_plat_data); |
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tps65910_sleepinit(tps65910, pmic_plat_data); |
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|
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if (pmic_plat_data->pm_off && !pm_power_off) { |
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tps65910_i2c_client = i2c; |
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pm_power_off = tps65910_power_off; |
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} |
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|
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ret = devm_mfd_add_devices(tps65910->dev, -1, |
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tps65910s, ARRAY_SIZE(tps65910s), |
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NULL, 0, |
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regmap_irq_get_domain(tps65910->irq_data)); |
|
if (ret < 0) { |
|
dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static const struct i2c_device_id tps65910_i2c_id[] = { |
|
{ "tps65910", TPS65910 }, |
|
{ "tps65911", TPS65911 }, |
|
{ } |
|
}; |
|
|
|
static struct i2c_driver tps65910_i2c_driver = { |
|
.driver = { |
|
.name = "tps65910", |
|
.of_match_table = of_match_ptr(tps65910_of_match), |
|
}, |
|
.probe = tps65910_i2c_probe, |
|
.id_table = tps65910_i2c_id, |
|
}; |
|
|
|
static int __init tps65910_i2c_init(void) |
|
{ |
|
return i2c_add_driver(&tps65910_i2c_driver); |
|
} |
|
/* init early so consumer devices can complete system boot */ |
|
subsys_initcall(tps65910_i2c_init);
|
|
|