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1065 lines
28 KiB
1065 lines
28 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Description: keypad driver for ADP5589, ADP5585 |
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* I2C QWERTY Keypad and IO Expander |
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* Bugs: Enter bugs at http://blackfin.uclinux.org/ |
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* |
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* Copyright (C) 2010-2011 Analog Devices Inc. |
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*/ |
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#include <linux/bitops.h> |
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#include <linux/module.h> |
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#include <linux/interrupt.h> |
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#include <linux/irq.h> |
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#include <linux/workqueue.h> |
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#include <linux/errno.h> |
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#include <linux/pm.h> |
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#include <linux/pm_wakeirq.h> |
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#include <linux/platform_device.h> |
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#include <linux/input.h> |
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#include <linux/i2c.h> |
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#include <linux/gpio.h> |
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#include <linux/slab.h> |
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#include <linux/input/adp5589.h> |
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/* ADP5589/ADP5585 Common Registers */ |
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#define ADP5589_5_ID 0x00 |
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#define ADP5589_5_INT_STATUS 0x01 |
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#define ADP5589_5_STATUS 0x02 |
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#define ADP5589_5_FIFO_1 0x03 |
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#define ADP5589_5_FIFO_2 0x04 |
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#define ADP5589_5_FIFO_3 0x05 |
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#define ADP5589_5_FIFO_4 0x06 |
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#define ADP5589_5_FIFO_5 0x07 |
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#define ADP5589_5_FIFO_6 0x08 |
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#define ADP5589_5_FIFO_7 0x09 |
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#define ADP5589_5_FIFO_8 0x0A |
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#define ADP5589_5_FIFO_9 0x0B |
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#define ADP5589_5_FIFO_10 0x0C |
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#define ADP5589_5_FIFO_11 0x0D |
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#define ADP5589_5_FIFO_12 0x0E |
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#define ADP5589_5_FIFO_13 0x0F |
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#define ADP5589_5_FIFO_14 0x10 |
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#define ADP5589_5_FIFO_15 0x11 |
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#define ADP5589_5_FIFO_16 0x12 |
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#define ADP5589_5_GPI_INT_STAT_A 0x13 |
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#define ADP5589_5_GPI_INT_STAT_B 0x14 |
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/* ADP5589 Registers */ |
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#define ADP5589_GPI_INT_STAT_C 0x15 |
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#define ADP5589_GPI_STATUS_A 0x16 |
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#define ADP5589_GPI_STATUS_B 0x17 |
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#define ADP5589_GPI_STATUS_C 0x18 |
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#define ADP5589_RPULL_CONFIG_A 0x19 |
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#define ADP5589_RPULL_CONFIG_B 0x1A |
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#define ADP5589_RPULL_CONFIG_C 0x1B |
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#define ADP5589_RPULL_CONFIG_D 0x1C |
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#define ADP5589_RPULL_CONFIG_E 0x1D |
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#define ADP5589_GPI_INT_LEVEL_A 0x1E |
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#define ADP5589_GPI_INT_LEVEL_B 0x1F |
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#define ADP5589_GPI_INT_LEVEL_C 0x20 |
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#define ADP5589_GPI_EVENT_EN_A 0x21 |
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#define ADP5589_GPI_EVENT_EN_B 0x22 |
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#define ADP5589_GPI_EVENT_EN_C 0x23 |
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#define ADP5589_GPI_INTERRUPT_EN_A 0x24 |
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#define ADP5589_GPI_INTERRUPT_EN_B 0x25 |
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#define ADP5589_GPI_INTERRUPT_EN_C 0x26 |
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#define ADP5589_DEBOUNCE_DIS_A 0x27 |
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#define ADP5589_DEBOUNCE_DIS_B 0x28 |
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#define ADP5589_DEBOUNCE_DIS_C 0x29 |
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#define ADP5589_GPO_DATA_OUT_A 0x2A |
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#define ADP5589_GPO_DATA_OUT_B 0x2B |
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#define ADP5589_GPO_DATA_OUT_C 0x2C |
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#define ADP5589_GPO_OUT_MODE_A 0x2D |
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#define ADP5589_GPO_OUT_MODE_B 0x2E |
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#define ADP5589_GPO_OUT_MODE_C 0x2F |
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#define ADP5589_GPIO_DIRECTION_A 0x30 |
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#define ADP5589_GPIO_DIRECTION_B 0x31 |
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#define ADP5589_GPIO_DIRECTION_C 0x32 |
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#define ADP5589_UNLOCK1 0x33 |
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#define ADP5589_UNLOCK2 0x34 |
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#define ADP5589_EXT_LOCK_EVENT 0x35 |
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#define ADP5589_UNLOCK_TIMERS 0x36 |
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#define ADP5589_LOCK_CFG 0x37 |
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#define ADP5589_RESET1_EVENT_A 0x38 |
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#define ADP5589_RESET1_EVENT_B 0x39 |
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#define ADP5589_RESET1_EVENT_C 0x3A |
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#define ADP5589_RESET2_EVENT_A 0x3B |
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#define ADP5589_RESET2_EVENT_B 0x3C |
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#define ADP5589_RESET_CFG 0x3D |
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#define ADP5589_PWM_OFFT_LOW 0x3E |
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#define ADP5589_PWM_OFFT_HIGH 0x3F |
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#define ADP5589_PWM_ONT_LOW 0x40 |
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#define ADP5589_PWM_ONT_HIGH 0x41 |
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#define ADP5589_PWM_CFG 0x42 |
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#define ADP5589_CLOCK_DIV_CFG 0x43 |
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#define ADP5589_LOGIC_1_CFG 0x44 |
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#define ADP5589_LOGIC_2_CFG 0x45 |
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#define ADP5589_LOGIC_FF_CFG 0x46 |
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#define ADP5589_LOGIC_INT_EVENT_EN 0x47 |
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#define ADP5589_POLL_PTIME_CFG 0x48 |
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#define ADP5589_PIN_CONFIG_A 0x49 |
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#define ADP5589_PIN_CONFIG_B 0x4A |
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#define ADP5589_PIN_CONFIG_C 0x4B |
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#define ADP5589_PIN_CONFIG_D 0x4C |
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#define ADP5589_GENERAL_CFG 0x4D |
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#define ADP5589_INT_EN 0x4E |
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/* ADP5585 Registers */ |
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#define ADP5585_GPI_STATUS_A 0x15 |
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#define ADP5585_GPI_STATUS_B 0x16 |
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#define ADP5585_RPULL_CONFIG_A 0x17 |
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#define ADP5585_RPULL_CONFIG_B 0x18 |
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#define ADP5585_RPULL_CONFIG_C 0x19 |
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#define ADP5585_RPULL_CONFIG_D 0x1A |
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#define ADP5585_GPI_INT_LEVEL_A 0x1B |
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#define ADP5585_GPI_INT_LEVEL_B 0x1C |
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#define ADP5585_GPI_EVENT_EN_A 0x1D |
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#define ADP5585_GPI_EVENT_EN_B 0x1E |
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#define ADP5585_GPI_INTERRUPT_EN_A 0x1F |
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#define ADP5585_GPI_INTERRUPT_EN_B 0x20 |
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#define ADP5585_DEBOUNCE_DIS_A 0x21 |
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#define ADP5585_DEBOUNCE_DIS_B 0x22 |
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#define ADP5585_GPO_DATA_OUT_A 0x23 |
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#define ADP5585_GPO_DATA_OUT_B 0x24 |
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#define ADP5585_GPO_OUT_MODE_A 0x25 |
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#define ADP5585_GPO_OUT_MODE_B 0x26 |
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#define ADP5585_GPIO_DIRECTION_A 0x27 |
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#define ADP5585_GPIO_DIRECTION_B 0x28 |
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#define ADP5585_RESET1_EVENT_A 0x29 |
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#define ADP5585_RESET1_EVENT_B 0x2A |
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#define ADP5585_RESET1_EVENT_C 0x2B |
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#define ADP5585_RESET2_EVENT_A 0x2C |
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#define ADP5585_RESET2_EVENT_B 0x2D |
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#define ADP5585_RESET_CFG 0x2E |
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#define ADP5585_PWM_OFFT_LOW 0x2F |
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#define ADP5585_PWM_OFFT_HIGH 0x30 |
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#define ADP5585_PWM_ONT_LOW 0x31 |
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#define ADP5585_PWM_ONT_HIGH 0x32 |
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#define ADP5585_PWM_CFG 0x33 |
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#define ADP5585_LOGIC_CFG 0x34 |
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#define ADP5585_LOGIC_FF_CFG 0x35 |
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#define ADP5585_LOGIC_INT_EVENT_EN 0x36 |
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#define ADP5585_POLL_PTIME_CFG 0x37 |
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#define ADP5585_PIN_CONFIG_A 0x38 |
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#define ADP5585_PIN_CONFIG_B 0x39 |
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#define ADP5585_PIN_CONFIG_D 0x3A |
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#define ADP5585_GENERAL_CFG 0x3B |
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#define ADP5585_INT_EN 0x3C |
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/* ID Register */ |
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#define ADP5589_5_DEVICE_ID_MASK 0xF |
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#define ADP5589_5_MAN_ID_MASK 0xF |
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#define ADP5589_5_MAN_ID_SHIFT 4 |
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#define ADP5589_5_MAN_ID 0x02 |
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/* GENERAL_CFG Register */ |
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#define OSC_EN BIT(7) |
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#define CORE_CLK(x) (((x) & 0x3) << 5) |
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#define LCK_TRK_LOGIC BIT(4) /* ADP5589 only */ |
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#define LCK_TRK_GPI BIT(3) /* ADP5589 only */ |
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#define INT_CFG BIT(1) |
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#define RST_CFG BIT(0) |
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/* INT_EN Register */ |
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#define LOGIC2_IEN BIT(5) /* ADP5589 only */ |
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#define LOGIC1_IEN BIT(4) |
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#define LOCK_IEN BIT(3) /* ADP5589 only */ |
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#define OVRFLOW_IEN BIT(2) |
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#define GPI_IEN BIT(1) |
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#define EVENT_IEN BIT(0) |
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/* Interrupt Status Register */ |
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#define LOGIC2_INT BIT(5) /* ADP5589 only */ |
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#define LOGIC1_INT BIT(4) |
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#define LOCK_INT BIT(3) /* ADP5589 only */ |
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#define OVRFLOW_INT BIT(2) |
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#define GPI_INT BIT(1) |
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#define EVENT_INT BIT(0) |
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/* STATUS Register */ |
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#define LOGIC2_STAT BIT(7) /* ADP5589 only */ |
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#define LOGIC1_STAT BIT(6) |
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#define LOCK_STAT BIT(5) /* ADP5589 only */ |
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#define KEC 0x1F |
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/* PIN_CONFIG_D Register */ |
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#define C4_EXTEND_CFG BIT(6) /* RESET2 */ |
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#define R4_EXTEND_CFG BIT(5) /* RESET1 */ |
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/* LOCK_CFG */ |
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#define LOCK_EN BIT(0) |
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#define PTIME_MASK 0x3 |
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#define LTIME_MASK 0x3 /* ADP5589 only */ |
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/* Key Event Register xy */ |
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#define KEY_EV_PRESSED BIT(7) |
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#define KEY_EV_MASK 0x7F |
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#define KEYP_MAX_EVENT 16 |
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#define ADP5589_MAXGPIO 19 |
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#define ADP5585_MAXGPIO 11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */ |
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enum { |
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ADP5589, |
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ADP5585_01, |
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ADP5585_02 |
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}; |
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struct adp_constants { |
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u8 maxgpio; |
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u8 keymapsize; |
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u8 gpi_pin_row_base; |
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u8 gpi_pin_row_end; |
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u8 gpi_pin_col_base; |
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u8 gpi_pin_base; |
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u8 gpi_pin_end; |
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u8 gpimapsize_max; |
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u8 max_row_num; |
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u8 max_col_num; |
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u8 row_mask; |
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u8 col_mask; |
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u8 col_shift; |
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u8 c4_extend_cfg; |
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u8 (*bank) (u8 offset); |
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u8 (*bit) (u8 offset); |
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u8 (*reg) (u8 reg); |
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}; |
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struct adp5589_kpad { |
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struct i2c_client *client; |
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struct input_dev *input; |
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const struct adp_constants *var; |
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unsigned short keycode[ADP5589_KEYMAPSIZE]; |
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const struct adp5589_gpi_map *gpimap; |
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unsigned short gpimapsize; |
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unsigned extend_cfg; |
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bool is_adp5585; |
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bool support_row5; |
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#ifdef CONFIG_GPIOLIB |
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unsigned char gpiomap[ADP5589_MAXGPIO]; |
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struct gpio_chip gc; |
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struct mutex gpio_lock; /* Protect cached dir, dat_out */ |
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u8 dat_out[3]; |
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u8 dir[3]; |
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#endif |
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}; |
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/* |
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* ADP5589 / ADP5585 derivative / variant handling |
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*/ |
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/* ADP5589 */ |
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static unsigned char adp5589_bank(unsigned char offset) |
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{ |
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return offset >> 3; |
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} |
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static unsigned char adp5589_bit(unsigned char offset) |
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{ |
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return 1u << (offset & 0x7); |
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} |
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static unsigned char adp5589_reg(unsigned char reg) |
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{ |
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return reg; |
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} |
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static const struct adp_constants const_adp5589 = { |
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.maxgpio = ADP5589_MAXGPIO, |
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.keymapsize = ADP5589_KEYMAPSIZE, |
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.gpi_pin_row_base = ADP5589_GPI_PIN_ROW_BASE, |
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.gpi_pin_row_end = ADP5589_GPI_PIN_ROW_END, |
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.gpi_pin_col_base = ADP5589_GPI_PIN_COL_BASE, |
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.gpi_pin_base = ADP5589_GPI_PIN_BASE, |
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.gpi_pin_end = ADP5589_GPI_PIN_END, |
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.gpimapsize_max = ADP5589_GPIMAPSIZE_MAX, |
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.c4_extend_cfg = 12, |
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.max_row_num = ADP5589_MAX_ROW_NUM, |
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.max_col_num = ADP5589_MAX_COL_NUM, |
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.row_mask = ADP5589_ROW_MASK, |
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.col_mask = ADP5589_COL_MASK, |
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.col_shift = ADP5589_COL_SHIFT, |
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.bank = adp5589_bank, |
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.bit = adp5589_bit, |
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.reg = adp5589_reg, |
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}; |
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/* ADP5585 */ |
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static unsigned char adp5585_bank(unsigned char offset) |
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{ |
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return offset > ADP5585_MAX_ROW_NUM; |
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} |
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static unsigned char adp5585_bit(unsigned char offset) |
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{ |
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return (offset > ADP5585_MAX_ROW_NUM) ? |
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1u << (offset - ADP5585_COL_SHIFT) : 1u << offset; |
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} |
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static const unsigned char adp5585_reg_lut[] = { |
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[ADP5589_GPI_STATUS_A] = ADP5585_GPI_STATUS_A, |
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[ADP5589_GPI_STATUS_B] = ADP5585_GPI_STATUS_B, |
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[ADP5589_RPULL_CONFIG_A] = ADP5585_RPULL_CONFIG_A, |
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[ADP5589_RPULL_CONFIG_B] = ADP5585_RPULL_CONFIG_B, |
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[ADP5589_RPULL_CONFIG_C] = ADP5585_RPULL_CONFIG_C, |
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[ADP5589_RPULL_CONFIG_D] = ADP5585_RPULL_CONFIG_D, |
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[ADP5589_GPI_INT_LEVEL_A] = ADP5585_GPI_INT_LEVEL_A, |
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[ADP5589_GPI_INT_LEVEL_B] = ADP5585_GPI_INT_LEVEL_B, |
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[ADP5589_GPI_EVENT_EN_A] = ADP5585_GPI_EVENT_EN_A, |
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[ADP5589_GPI_EVENT_EN_B] = ADP5585_GPI_EVENT_EN_B, |
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[ADP5589_GPI_INTERRUPT_EN_A] = ADP5585_GPI_INTERRUPT_EN_A, |
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[ADP5589_GPI_INTERRUPT_EN_B] = ADP5585_GPI_INTERRUPT_EN_B, |
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[ADP5589_DEBOUNCE_DIS_A] = ADP5585_DEBOUNCE_DIS_A, |
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[ADP5589_DEBOUNCE_DIS_B] = ADP5585_DEBOUNCE_DIS_B, |
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[ADP5589_GPO_DATA_OUT_A] = ADP5585_GPO_DATA_OUT_A, |
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[ADP5589_GPO_DATA_OUT_B] = ADP5585_GPO_DATA_OUT_B, |
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[ADP5589_GPO_OUT_MODE_A] = ADP5585_GPO_OUT_MODE_A, |
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[ADP5589_GPO_OUT_MODE_B] = ADP5585_GPO_OUT_MODE_B, |
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[ADP5589_GPIO_DIRECTION_A] = ADP5585_GPIO_DIRECTION_A, |
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[ADP5589_GPIO_DIRECTION_B] = ADP5585_GPIO_DIRECTION_B, |
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[ADP5589_RESET1_EVENT_A] = ADP5585_RESET1_EVENT_A, |
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[ADP5589_RESET1_EVENT_B] = ADP5585_RESET1_EVENT_B, |
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[ADP5589_RESET1_EVENT_C] = ADP5585_RESET1_EVENT_C, |
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[ADP5589_RESET2_EVENT_A] = ADP5585_RESET2_EVENT_A, |
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[ADP5589_RESET2_EVENT_B] = ADP5585_RESET2_EVENT_B, |
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[ADP5589_RESET_CFG] = ADP5585_RESET_CFG, |
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[ADP5589_PWM_OFFT_LOW] = ADP5585_PWM_OFFT_LOW, |
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[ADP5589_PWM_OFFT_HIGH] = ADP5585_PWM_OFFT_HIGH, |
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[ADP5589_PWM_ONT_LOW] = ADP5585_PWM_ONT_LOW, |
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[ADP5589_PWM_ONT_HIGH] = ADP5585_PWM_ONT_HIGH, |
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[ADP5589_PWM_CFG] = ADP5585_PWM_CFG, |
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[ADP5589_LOGIC_1_CFG] = ADP5585_LOGIC_CFG, |
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[ADP5589_LOGIC_FF_CFG] = ADP5585_LOGIC_FF_CFG, |
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[ADP5589_LOGIC_INT_EVENT_EN] = ADP5585_LOGIC_INT_EVENT_EN, |
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[ADP5589_POLL_PTIME_CFG] = ADP5585_POLL_PTIME_CFG, |
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[ADP5589_PIN_CONFIG_A] = ADP5585_PIN_CONFIG_A, |
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[ADP5589_PIN_CONFIG_B] = ADP5585_PIN_CONFIG_B, |
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[ADP5589_PIN_CONFIG_D] = ADP5585_PIN_CONFIG_D, |
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[ADP5589_GENERAL_CFG] = ADP5585_GENERAL_CFG, |
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[ADP5589_INT_EN] = ADP5585_INT_EN, |
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}; |
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static unsigned char adp5585_reg(unsigned char reg) |
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{ |
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return adp5585_reg_lut[reg]; |
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} |
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static const struct adp_constants const_adp5585 = { |
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.maxgpio = ADP5585_MAXGPIO, |
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.keymapsize = ADP5585_KEYMAPSIZE, |
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.gpi_pin_row_base = ADP5585_GPI_PIN_ROW_BASE, |
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.gpi_pin_row_end = ADP5585_GPI_PIN_ROW_END, |
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.gpi_pin_col_base = ADP5585_GPI_PIN_COL_BASE, |
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.gpi_pin_base = ADP5585_GPI_PIN_BASE, |
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.gpi_pin_end = ADP5585_GPI_PIN_END, |
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.gpimapsize_max = ADP5585_GPIMAPSIZE_MAX, |
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.c4_extend_cfg = 10, |
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.max_row_num = ADP5585_MAX_ROW_NUM, |
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.max_col_num = ADP5585_MAX_COL_NUM, |
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.row_mask = ADP5585_ROW_MASK, |
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.col_mask = ADP5585_COL_MASK, |
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.col_shift = ADP5585_COL_SHIFT, |
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.bank = adp5585_bank, |
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.bit = adp5585_bit, |
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.reg = adp5585_reg, |
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}; |
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static int adp5589_read(struct i2c_client *client, u8 reg) |
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{ |
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int ret = i2c_smbus_read_byte_data(client, reg); |
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if (ret < 0) |
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dev_err(&client->dev, "Read Error\n"); |
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return ret; |
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} |
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static int adp5589_write(struct i2c_client *client, u8 reg, u8 val) |
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{ |
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return i2c_smbus_write_byte_data(client, reg, val); |
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} |
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#ifdef CONFIG_GPIOLIB |
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static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off) |
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{ |
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struct adp5589_kpad *kpad = gpiochip_get_data(chip); |
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unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); |
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unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); |
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return !!(adp5589_read(kpad->client, |
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kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) & |
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bit); |
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} |
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static void adp5589_gpio_set_value(struct gpio_chip *chip, |
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unsigned off, int val) |
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{ |
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struct adp5589_kpad *kpad = gpiochip_get_data(chip); |
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unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); |
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unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); |
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mutex_lock(&kpad->gpio_lock); |
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if (val) |
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kpad->dat_out[bank] |= bit; |
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else |
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kpad->dat_out[bank] &= ~bit; |
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adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) + |
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bank, kpad->dat_out[bank]); |
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mutex_unlock(&kpad->gpio_lock); |
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} |
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static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off) |
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{ |
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struct adp5589_kpad *kpad = gpiochip_get_data(chip); |
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unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); |
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unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); |
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int ret; |
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mutex_lock(&kpad->gpio_lock); |
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kpad->dir[bank] &= ~bit; |
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ret = adp5589_write(kpad->client, |
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kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank, |
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kpad->dir[bank]); |
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mutex_unlock(&kpad->gpio_lock); |
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return ret; |
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} |
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static int adp5589_gpio_direction_output(struct gpio_chip *chip, |
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unsigned off, int val) |
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{ |
|
struct adp5589_kpad *kpad = gpiochip_get_data(chip); |
|
unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); |
|
unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); |
|
int ret; |
|
|
|
mutex_lock(&kpad->gpio_lock); |
|
|
|
kpad->dir[bank] |= bit; |
|
|
|
if (val) |
|
kpad->dat_out[bank] |= bit; |
|
else |
|
kpad->dat_out[bank] &= ~bit; |
|
|
|
ret = adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) |
|
+ bank, kpad->dat_out[bank]); |
|
ret |= adp5589_write(kpad->client, |
|
kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank, |
|
kpad->dir[bank]); |
|
|
|
mutex_unlock(&kpad->gpio_lock); |
|
|
|
return ret; |
|
} |
|
|
|
static int adp5589_build_gpiomap(struct adp5589_kpad *kpad, |
|
const struct adp5589_kpad_platform_data *pdata) |
|
{ |
|
bool pin_used[ADP5589_MAXGPIO]; |
|
int n_unused = 0; |
|
int i; |
|
|
|
memset(pin_used, false, sizeof(pin_used)); |
|
|
|
for (i = 0; i < kpad->var->maxgpio; i++) |
|
if (pdata->keypad_en_mask & BIT(i)) |
|
pin_used[i] = true; |
|
|
|
for (i = 0; i < kpad->gpimapsize; i++) |
|
pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true; |
|
|
|
if (kpad->extend_cfg & R4_EXTEND_CFG) |
|
pin_used[4] = true; |
|
|
|
if (kpad->extend_cfg & C4_EXTEND_CFG) |
|
pin_used[kpad->var->c4_extend_cfg] = true; |
|
|
|
if (!kpad->support_row5) |
|
pin_used[5] = true; |
|
|
|
for (i = 0; i < kpad->var->maxgpio; i++) |
|
if (!pin_used[i]) |
|
kpad->gpiomap[n_unused++] = i; |
|
|
|
return n_unused; |
|
} |
|
|
|
static int adp5589_gpio_add(struct adp5589_kpad *kpad) |
|
{ |
|
struct device *dev = &kpad->client->dev; |
|
const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev); |
|
const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data; |
|
int i, error; |
|
|
|
if (!gpio_data) |
|
return 0; |
|
|
|
kpad->gc.parent = dev; |
|
kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata); |
|
if (kpad->gc.ngpio == 0) { |
|
dev_info(dev, "No unused gpios left to export\n"); |
|
return 0; |
|
} |
|
|
|
kpad->gc.direction_input = adp5589_gpio_direction_input; |
|
kpad->gc.direction_output = adp5589_gpio_direction_output; |
|
kpad->gc.get = adp5589_gpio_get_value; |
|
kpad->gc.set = adp5589_gpio_set_value; |
|
kpad->gc.can_sleep = 1; |
|
|
|
kpad->gc.base = gpio_data->gpio_start; |
|
kpad->gc.label = kpad->client->name; |
|
kpad->gc.owner = THIS_MODULE; |
|
|
|
mutex_init(&kpad->gpio_lock); |
|
|
|
error = devm_gpiochip_add_data(dev, &kpad->gc, kpad); |
|
if (error) |
|
return error; |
|
|
|
for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) { |
|
kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg( |
|
ADP5589_GPO_DATA_OUT_A) + i); |
|
kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg( |
|
ADP5589_GPIO_DIRECTION_A) + i); |
|
} |
|
|
|
return 0; |
|
} |
|
#else |
|
static inline int adp5589_gpio_add(struct adp5589_kpad *kpad) |
|
{ |
|
return 0; |
|
} |
|
#endif |
|
|
|
static void adp5589_report_switches(struct adp5589_kpad *kpad, |
|
int key, int key_val) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < kpad->gpimapsize; i++) { |
|
if (key_val == kpad->gpimap[i].pin) { |
|
input_report_switch(kpad->input, |
|
kpad->gpimap[i].sw_evt, |
|
key & KEY_EV_PRESSED); |
|
break; |
|
} |
|
} |
|
} |
|
|
|
static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < ev_cnt; i++) { |
|
int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i); |
|
int key_val = key & KEY_EV_MASK; |
|
|
|
if (key_val >= kpad->var->gpi_pin_base && |
|
key_val <= kpad->var->gpi_pin_end) { |
|
adp5589_report_switches(kpad, key, key_val); |
|
} else { |
|
input_report_key(kpad->input, |
|
kpad->keycode[key_val - 1], |
|
key & KEY_EV_PRESSED); |
|
} |
|
} |
|
} |
|
|
|
static irqreturn_t adp5589_irq(int irq, void *handle) |
|
{ |
|
struct adp5589_kpad *kpad = handle; |
|
struct i2c_client *client = kpad->client; |
|
int status, ev_cnt; |
|
|
|
status = adp5589_read(client, ADP5589_5_INT_STATUS); |
|
|
|
if (status & OVRFLOW_INT) /* Unlikely and should never happen */ |
|
dev_err(&client->dev, "Event Overflow Error\n"); |
|
|
|
if (status & EVENT_INT) { |
|
ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC; |
|
if (ev_cnt) { |
|
adp5589_report_events(kpad, ev_cnt); |
|
input_sync(kpad->input); |
|
} |
|
} |
|
|
|
adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */ |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < kpad->var->keymapsize; i++) |
|
if (key == kpad->keycode[i]) |
|
return (i + 1) | KEY_EV_PRESSED; |
|
|
|
dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n"); |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static int adp5589_setup(struct adp5589_kpad *kpad) |
|
{ |
|
struct i2c_client *client = kpad->client; |
|
const struct adp5589_kpad_platform_data *pdata = |
|
dev_get_platdata(&client->dev); |
|
u8 (*reg) (u8) = kpad->var->reg; |
|
unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0; |
|
unsigned char pull_mask = 0; |
|
int i, ret; |
|
|
|
ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A), |
|
pdata->keypad_en_mask & kpad->var->row_mask); |
|
ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B), |
|
(pdata->keypad_en_mask >> kpad->var->col_shift) & |
|
kpad->var->col_mask); |
|
|
|
if (!kpad->is_adp5585) |
|
ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C, |
|
(pdata->keypad_en_mask >> 16) & 0xFF); |
|
|
|
if (!kpad->is_adp5585 && pdata->en_keylock) { |
|
ret |= adp5589_write(client, ADP5589_UNLOCK1, |
|
pdata->unlock_key1); |
|
ret |= adp5589_write(client, ADP5589_UNLOCK2, |
|
pdata->unlock_key2); |
|
ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS, |
|
pdata->unlock_timer & LTIME_MASK); |
|
ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN); |
|
} |
|
|
|
for (i = 0; i < KEYP_MAX_EVENT; i++) |
|
ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i); |
|
|
|
for (i = 0; i < pdata->gpimapsize; i++) { |
|
unsigned short pin = pdata->gpimap[i].pin; |
|
|
|
if (pin <= kpad->var->gpi_pin_row_end) { |
|
evt_mode1 |= BIT(pin - kpad->var->gpi_pin_row_base); |
|
} else { |
|
evt_mode2 |= |
|
BIT(pin - kpad->var->gpi_pin_col_base) & 0xFF; |
|
if (!kpad->is_adp5585) |
|
evt_mode3 |= |
|
BIT(pin - kpad->var->gpi_pin_col_base) >> 8; |
|
} |
|
} |
|
|
|
if (pdata->gpimapsize) { |
|
ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A), |
|
evt_mode1); |
|
ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B), |
|
evt_mode2); |
|
if (!kpad->is_adp5585) |
|
ret |= adp5589_write(client, |
|
reg(ADP5589_GPI_EVENT_EN_C), |
|
evt_mode3); |
|
} |
|
|
|
if (pdata->pull_dis_mask & pdata->pullup_en_100k & |
|
pdata->pullup_en_300k & pdata->pulldown_en_300k) |
|
dev_warn(&client->dev, "Conflicting pull resistor config\n"); |
|
|
|
for (i = 0; i <= kpad->var->max_row_num; i++) { |
|
unsigned int val = 0, bit = BIT(i); |
|
if (pdata->pullup_en_300k & bit) |
|
val = 0; |
|
else if (pdata->pulldown_en_300k & bit) |
|
val = 1; |
|
else if (pdata->pullup_en_100k & bit) |
|
val = 2; |
|
else if (pdata->pull_dis_mask & bit) |
|
val = 3; |
|
|
|
pull_mask |= val << (2 * (i & 0x3)); |
|
|
|
if (i % 4 == 3 || i == kpad->var->max_row_num) { |
|
ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A) |
|
+ (i >> 2), pull_mask); |
|
pull_mask = 0; |
|
} |
|
} |
|
|
|
for (i = 0; i <= kpad->var->max_col_num; i++) { |
|
unsigned int val = 0, bit = BIT(i + kpad->var->col_shift); |
|
if (pdata->pullup_en_300k & bit) |
|
val = 0; |
|
else if (pdata->pulldown_en_300k & bit) |
|
val = 1; |
|
else if (pdata->pullup_en_100k & bit) |
|
val = 2; |
|
else if (pdata->pull_dis_mask & bit) |
|
val = 3; |
|
|
|
pull_mask |= val << (2 * (i & 0x3)); |
|
|
|
if (i % 4 == 3 || i == kpad->var->max_col_num) { |
|
ret |= adp5589_write(client, |
|
reg(ADP5585_RPULL_CONFIG_C) + |
|
(i >> 2), pull_mask); |
|
pull_mask = 0; |
|
} |
|
} |
|
|
|
if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) { |
|
ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A), |
|
adp5589_get_evcode(kpad, |
|
pdata->reset1_key_1)); |
|
ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B), |
|
adp5589_get_evcode(kpad, |
|
pdata->reset1_key_2)); |
|
ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C), |
|
adp5589_get_evcode(kpad, |
|
pdata->reset1_key_3)); |
|
kpad->extend_cfg |= R4_EXTEND_CFG; |
|
} |
|
|
|
if (pdata->reset2_key_1 && pdata->reset2_key_2) { |
|
ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A), |
|
adp5589_get_evcode(kpad, |
|
pdata->reset2_key_1)); |
|
ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B), |
|
adp5589_get_evcode(kpad, |
|
pdata->reset2_key_2)); |
|
kpad->extend_cfg |= C4_EXTEND_CFG; |
|
} |
|
|
|
if (kpad->extend_cfg) { |
|
ret |= adp5589_write(client, reg(ADP5589_RESET_CFG), |
|
pdata->reset_cfg); |
|
ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D), |
|
kpad->extend_cfg); |
|
} |
|
|
|
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A), |
|
pdata->debounce_dis_mask & kpad->var->row_mask); |
|
|
|
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B), |
|
(pdata->debounce_dis_mask >> kpad->var->col_shift) |
|
& kpad->var->col_mask); |
|
|
|
if (!kpad->is_adp5585) |
|
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C), |
|
(pdata->debounce_dis_mask >> 16) & 0xFF); |
|
|
|
ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG), |
|
pdata->scan_cycle_time & PTIME_MASK); |
|
ret |= adp5589_write(client, ADP5589_5_INT_STATUS, |
|
(kpad->is_adp5585 ? 0 : LOGIC2_INT) | |
|
LOGIC1_INT | OVRFLOW_INT | |
|
(kpad->is_adp5585 ? 0 : LOCK_INT) | |
|
GPI_INT | EVENT_INT); /* Status is W1C */ |
|
|
|
ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG), |
|
INT_CFG | OSC_EN | CORE_CLK(3)); |
|
ret |= adp5589_write(client, reg(ADP5589_INT_EN), |
|
OVRFLOW_IEN | GPI_IEN | EVENT_IEN); |
|
|
|
if (ret < 0) { |
|
dev_err(&client->dev, "Write Error\n"); |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void adp5589_report_switch_state(struct adp5589_kpad *kpad) |
|
{ |
|
int gpi_stat_tmp, pin_loc; |
|
int i; |
|
int gpi_stat1 = adp5589_read(kpad->client, |
|
kpad->var->reg(ADP5589_GPI_STATUS_A)); |
|
int gpi_stat2 = adp5589_read(kpad->client, |
|
kpad->var->reg(ADP5589_GPI_STATUS_B)); |
|
int gpi_stat3 = !kpad->is_adp5585 ? |
|
adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0; |
|
|
|
for (i = 0; i < kpad->gpimapsize; i++) { |
|
unsigned short pin = kpad->gpimap[i].pin; |
|
|
|
if (pin <= kpad->var->gpi_pin_row_end) { |
|
gpi_stat_tmp = gpi_stat1; |
|
pin_loc = pin - kpad->var->gpi_pin_row_base; |
|
} else if ((pin - kpad->var->gpi_pin_col_base) < 8) { |
|
gpi_stat_tmp = gpi_stat2; |
|
pin_loc = pin - kpad->var->gpi_pin_col_base; |
|
} else { |
|
gpi_stat_tmp = gpi_stat3; |
|
pin_loc = pin - kpad->var->gpi_pin_col_base - 8; |
|
} |
|
|
|
if (gpi_stat_tmp < 0) { |
|
dev_err(&kpad->client->dev, |
|
"Can't read GPIO_DAT_STAT switch %d, default to OFF\n", |
|
pin); |
|
gpi_stat_tmp = 0; |
|
} |
|
|
|
input_report_switch(kpad->input, |
|
kpad->gpimap[i].sw_evt, |
|
!(gpi_stat_tmp & BIT(pin_loc))); |
|
} |
|
|
|
input_sync(kpad->input); |
|
} |
|
|
|
static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid) |
|
{ |
|
struct i2c_client *client = kpad->client; |
|
const struct adp5589_kpad_platform_data *pdata = |
|
dev_get_platdata(&client->dev); |
|
struct input_dev *input; |
|
unsigned int i; |
|
int error; |
|
|
|
if (!((pdata->keypad_en_mask & kpad->var->row_mask) && |
|
(pdata->keypad_en_mask >> kpad->var->col_shift)) || |
|
!pdata->keymap) { |
|
dev_err(&client->dev, "no rows, cols or keymap from pdata\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (pdata->keymapsize != kpad->var->keymapsize) { |
|
dev_err(&client->dev, "invalid keymapsize\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (!pdata->gpimap && pdata->gpimapsize) { |
|
dev_err(&client->dev, "invalid gpimap from pdata\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (pdata->gpimapsize > kpad->var->gpimapsize_max) { |
|
dev_err(&client->dev, "invalid gpimapsize\n"); |
|
return -EINVAL; |
|
} |
|
|
|
for (i = 0; i < pdata->gpimapsize; i++) { |
|
unsigned short pin = pdata->gpimap[i].pin; |
|
|
|
if (pin < kpad->var->gpi_pin_base || |
|
pin > kpad->var->gpi_pin_end) { |
|
dev_err(&client->dev, "invalid gpi pin data\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (BIT(pin - kpad->var->gpi_pin_row_base) & |
|
pdata->keypad_en_mask) { |
|
dev_err(&client->dev, "invalid gpi row/col data\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (!client->irq) { |
|
dev_err(&client->dev, "no IRQ?\n"); |
|
return -EINVAL; |
|
} |
|
|
|
input = devm_input_allocate_device(&client->dev); |
|
if (!input) |
|
return -ENOMEM; |
|
|
|
kpad->input = input; |
|
|
|
input->name = client->name; |
|
input->phys = "adp5589-keys/input0"; |
|
input->dev.parent = &client->dev; |
|
|
|
input_set_drvdata(input, kpad); |
|
|
|
input->id.bustype = BUS_I2C; |
|
input->id.vendor = 0x0001; |
|
input->id.product = 0x0001; |
|
input->id.version = revid; |
|
|
|
input->keycodesize = sizeof(kpad->keycode[0]); |
|
input->keycodemax = pdata->keymapsize; |
|
input->keycode = kpad->keycode; |
|
|
|
memcpy(kpad->keycode, pdata->keymap, |
|
pdata->keymapsize * input->keycodesize); |
|
|
|
kpad->gpimap = pdata->gpimap; |
|
kpad->gpimapsize = pdata->gpimapsize; |
|
|
|
/* setup input device */ |
|
__set_bit(EV_KEY, input->evbit); |
|
|
|
if (pdata->repeat) |
|
__set_bit(EV_REP, input->evbit); |
|
|
|
for (i = 0; i < input->keycodemax; i++) |
|
if (kpad->keycode[i] <= KEY_MAX) |
|
__set_bit(kpad->keycode[i], input->keybit); |
|
__clear_bit(KEY_RESERVED, input->keybit); |
|
|
|
if (kpad->gpimapsize) |
|
__set_bit(EV_SW, input->evbit); |
|
for (i = 0; i < kpad->gpimapsize; i++) |
|
__set_bit(kpad->gpimap[i].sw_evt, input->swbit); |
|
|
|
error = input_register_device(input); |
|
if (error) { |
|
dev_err(&client->dev, "unable to register input device\n"); |
|
return error; |
|
} |
|
|
|
error = devm_request_threaded_irq(&client->dev, client->irq, |
|
NULL, adp5589_irq, |
|
IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
|
client->dev.driver->name, kpad); |
|
if (error) { |
|
dev_err(&client->dev, "unable to request irq %d\n", client->irq); |
|
return error; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void adp5589_clear_config(void *data) |
|
{ |
|
struct i2c_client *client = data; |
|
struct adp5589_kpad *kpad = i2c_get_clientdata(client); |
|
|
|
adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0); |
|
} |
|
|
|
static int adp5589_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
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{ |
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struct adp5589_kpad *kpad; |
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const struct adp5589_kpad_platform_data *pdata = |
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dev_get_platdata(&client->dev); |
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unsigned int revid; |
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int error, ret; |
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|
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if (!i2c_check_functionality(client->adapter, |
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I2C_FUNC_SMBUS_BYTE_DATA)) { |
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dev_err(&client->dev, "SMBUS Byte Data not Supported\n"); |
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return -EIO; |
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} |
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|
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if (!pdata) { |
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dev_err(&client->dev, "no platform data?\n"); |
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return -EINVAL; |
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} |
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|
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kpad = devm_kzalloc(&client->dev, sizeof(*kpad), GFP_KERNEL); |
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if (!kpad) |
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return -ENOMEM; |
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|
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kpad->client = client; |
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|
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switch (id->driver_data) { |
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case ADP5585_02: |
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kpad->support_row5 = true; |
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fallthrough; |
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case ADP5585_01: |
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kpad->is_adp5585 = true; |
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kpad->var = &const_adp5585; |
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break; |
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case ADP5589: |
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kpad->support_row5 = true; |
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kpad->var = &const_adp5589; |
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break; |
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} |
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|
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error = devm_add_action_or_reset(&client->dev, adp5589_clear_config, |
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client); |
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if (error) |
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return error; |
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|
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ret = adp5589_read(client, ADP5589_5_ID); |
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if (ret < 0) |
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return ret; |
|
|
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revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK; |
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|
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if (pdata->keymapsize) { |
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error = adp5589_keypad_add(kpad, revid); |
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if (error) |
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return error; |
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} |
|
|
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error = adp5589_setup(kpad); |
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if (error) |
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return error; |
|
|
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if (kpad->gpimapsize) |
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adp5589_report_switch_state(kpad); |
|
|
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error = adp5589_gpio_add(kpad); |
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if (error) |
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return error; |
|
|
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i2c_set_clientdata(client, kpad); |
|
|
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dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq); |
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return 0; |
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} |
|
|
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static int __maybe_unused adp5589_suspend(struct device *dev) |
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{ |
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struct i2c_client *client = to_i2c_client(dev); |
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struct adp5589_kpad *kpad = i2c_get_clientdata(client); |
|
|
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if (kpad->input) |
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disable_irq(client->irq); |
|
|
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return 0; |
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} |
|
|
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static int __maybe_unused adp5589_resume(struct device *dev) |
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{ |
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struct i2c_client *client = to_i2c_client(dev); |
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struct adp5589_kpad *kpad = i2c_get_clientdata(client); |
|
|
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if (kpad->input) |
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enable_irq(client->irq); |
|
|
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return 0; |
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} |
|
|
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static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume); |
|
|
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static const struct i2c_device_id adp5589_id[] = { |
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{"adp5589-keys", ADP5589}, |
|
{"adp5585-keys", ADP5585_01}, |
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{"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */ |
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{} |
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}; |
|
|
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MODULE_DEVICE_TABLE(i2c, adp5589_id); |
|
|
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static struct i2c_driver adp5589_driver = { |
|
.driver = { |
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.name = KBUILD_MODNAME, |
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.pm = &adp5589_dev_pm_ops, |
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}, |
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.probe = adp5589_probe, |
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.id_table = adp5589_id, |
|
}; |
|
|
|
module_i2c_driver(adp5589_driver); |
|
|
|
MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Michael Hennerich <[email protected]>"); |
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MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");
|
|
|