1114 lines
30 KiB
C
1114 lines
30 KiB
C
/*
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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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* Licensed under the GPL-2.
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*/
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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/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 (1 << 7)
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#define CORE_CLK(x) (((x) & 0x3) << 5)
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#define LCK_TRK_LOGIC (1 << 4) /* ADP5589 only */
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#define LCK_TRK_GPI (1 << 3) /* ADP5589 only */
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#define INT_CFG (1 << 1)
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#define RST_CFG (1 << 0)
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/* INT_EN Register */
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#define LOGIC2_IEN (1 << 5) /* ADP5589 only */
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#define LOGIC1_IEN (1 << 4)
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#define LOCK_IEN (1 << 3) /* ADP5589 only */
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#define OVRFLOW_IEN (1 << 2)
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#define GPI_IEN (1 << 1)
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#define EVENT_IEN (1 << 0)
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/* Interrupt Status Register */
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#define LOGIC2_INT (1 << 5) /* ADP5589 only */
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#define LOGIC1_INT (1 << 4)
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#define LOCK_INT (1 << 3) /* ADP5589 only */
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#define OVRFLOW_INT (1 << 2)
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#define GPI_INT (1 << 1)
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#define EVENT_INT (1 << 0)
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/* STATUS Register */
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#define LOGIC2_STAT (1 << 7) /* ADP5589 only */
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#define LOGIC1_STAT (1 << 6)
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#define LOCK_STAT (1 << 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 (1 << 6) /* RESET2 */
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#define R4_EXTEND_CFG (1 << 5) /* RESET1 */
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/* LOCK_CFG */
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#define LOCK_EN (1 << 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 (1 << 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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bool export_gpio;
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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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}
|
|
|
|
static void adp5589_gpio_set_value(struct gpio_chip *chip,
|
|
unsigned off, int val)
|
|
{
|
|
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]);
|
|
|
|
mutex_lock(&kpad->gpio_lock);
|
|
|
|
if (val)
|
|
kpad->dat_out[bank] |= bit;
|
|
else
|
|
kpad->dat_out[bank] &= ~bit;
|
|
|
|
adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) +
|
|
bank, kpad->dat_out[bank]);
|
|
|
|
mutex_unlock(&kpad->gpio_lock);
|
|
}
|
|
|
|
static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)
|
|
{
|
|
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;
|
|
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_gpio_direction_output(struct gpio_chip *chip,
|
|
unsigned off, int val)
|
|
{
|
|
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 & (1 << 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.ngpio = adp5589_build_gpiomap(kpad, pdata);
|
|
if (kpad->gc.ngpio == 0) {
|
|
dev_info(dev, "No unused gpios left to export\n");
|
|
return 0;
|
|
}
|
|
|
|
kpad->export_gpio = true;
|
|
|
|
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 = gpiochip_add_data(&kpad->gc, kpad);
|
|
if (error) {
|
|
dev_err(dev, "gpiochip_add_data() failed, err: %d\n", 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);
|
|
}
|
|
|
|
if (gpio_data->setup) {
|
|
error = gpio_data->setup(kpad->client,
|
|
kpad->gc.base, kpad->gc.ngpio,
|
|
gpio_data->context);
|
|
if (error)
|
|
dev_warn(dev, "setup failed, %d\n", error);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void adp5589_gpio_remove(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 error;
|
|
|
|
if (!kpad->export_gpio)
|
|
return;
|
|
|
|
if (gpio_data->teardown) {
|
|
error = gpio_data->teardown(kpad->client,
|
|
kpad->gc.base, kpad->gc.ngpio,
|
|
gpio_data->context);
|
|
if (error)
|
|
dev_warn(dev, "teardown failed %d\n", error);
|
|
}
|
|
|
|
gpiochip_remove(&kpad->gc);
|
|
}
|
|
#else
|
|
static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
|
|
{
|
|
}
|
|
#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 |= (1 << (pin - kpad->var->gpi_pin_row_base));
|
|
} else {
|
|
evt_mode2 |=
|
|
((1 << (pin - kpad->var->gpi_pin_col_base)) & 0xFF);
|
|
if (!kpad->is_adp5585)
|
|
evt_mode3 |= ((1 << (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 val = 0, bit = (1 << 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 val = 0, bit = 1 << (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 & (1 << pin_loc)));
|
|
}
|
|
|
|
input_sync(kpad->input);
|
|
}
|
|
|
|
static int adp5589_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct adp5589_kpad *kpad;
|
|
const struct adp5589_kpad_platform_data *pdata =
|
|
dev_get_platdata(&client->dev);
|
|
struct input_dev *input;
|
|
unsigned int revid;
|
|
int ret, i;
|
|
int error;
|
|
|
|
if (!i2c_check_functionality(client->adapter,
|
|
I2C_FUNC_SMBUS_BYTE_DATA)) {
|
|
dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (!pdata) {
|
|
dev_err(&client->dev, "no platform data?\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
|
|
if (!kpad)
|
|
return -ENOMEM;
|
|
|
|
switch (id->driver_data) {
|
|
case ADP5585_02:
|
|
kpad->support_row5 = true;
|
|
/* fall through */
|
|
case ADP5585_01:
|
|
kpad->is_adp5585 = true;
|
|
kpad->var = &const_adp5585;
|
|
break;
|
|
case ADP5589:
|
|
kpad->support_row5 = true;
|
|
kpad->var = &const_adp5589;
|
|
break;
|
|
}
|
|
|
|
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");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
if (pdata->keymapsize != kpad->var->keymapsize) {
|
|
dev_err(&client->dev, "invalid keymapsize\n");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
if (!pdata->gpimap && pdata->gpimapsize) {
|
|
dev_err(&client->dev, "invalid gpimap from pdata\n");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
|
|
dev_err(&client->dev, "invalid gpimapsize\n");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
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");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
if ((1 << (pin - kpad->var->gpi_pin_row_base)) &
|
|
pdata->keypad_en_mask) {
|
|
dev_err(&client->dev, "invalid gpi row/col data\n");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
}
|
|
|
|
if (!client->irq) {
|
|
dev_err(&client->dev, "no IRQ?\n");
|
|
error = -EINVAL;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
input = input_allocate_device();
|
|
if (!input) {
|
|
error = -ENOMEM;
|
|
goto err_free_mem;
|
|
}
|
|
|
|
kpad->client = client;
|
|
kpad->input = input;
|
|
|
|
ret = adp5589_read(client, ADP5589_5_ID);
|
|
if (ret < 0) {
|
|
error = ret;
|
|
goto err_free_input;
|
|
}
|
|
|
|
revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
|
|
|
|
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");
|
|
goto err_free_input;
|
|
}
|
|
|
|
error = request_threaded_irq(client->irq, NULL, adp5589_irq,
|
|
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
|
|
client->dev.driver->name, kpad);
|
|
if (error) {
|
|
dev_err(&client->dev, "irq %d busy?\n", client->irq);
|
|
goto err_unreg_dev;
|
|
}
|
|
|
|
error = adp5589_setup(kpad);
|
|
if (error)
|
|
goto err_free_irq;
|
|
|
|
if (kpad->gpimapsize)
|
|
adp5589_report_switch_state(kpad);
|
|
|
|
error = adp5589_gpio_add(kpad);
|
|
if (error)
|
|
goto err_free_irq;
|
|
|
|
device_init_wakeup(&client->dev, 1);
|
|
i2c_set_clientdata(client, kpad);
|
|
|
|
dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
|
|
return 0;
|
|
|
|
err_free_irq:
|
|
free_irq(client->irq, kpad);
|
|
err_unreg_dev:
|
|
input_unregister_device(input);
|
|
input = NULL;
|
|
err_free_input:
|
|
input_free_device(input);
|
|
err_free_mem:
|
|
kfree(kpad);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int adp5589_remove(struct i2c_client *client)
|
|
{
|
|
struct adp5589_kpad *kpad = i2c_get_clientdata(client);
|
|
|
|
adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
|
|
free_irq(client->irq, kpad);
|
|
input_unregister_device(kpad->input);
|
|
adp5589_gpio_remove(kpad);
|
|
kfree(kpad);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int adp5589_suspend(struct device *dev)
|
|
{
|
|
struct adp5589_kpad *kpad = dev_get_drvdata(dev);
|
|
struct i2c_client *client = kpad->client;
|
|
|
|
disable_irq(client->irq);
|
|
|
|
if (device_may_wakeup(&client->dev))
|
|
enable_irq_wake(client->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adp5589_resume(struct device *dev)
|
|
{
|
|
struct adp5589_kpad *kpad = dev_get_drvdata(dev);
|
|
struct i2c_client *client = kpad->client;
|
|
|
|
if (device_may_wakeup(&client->dev))
|
|
disable_irq_wake(client->irq);
|
|
|
|
enable_irq(client->irq);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
|
|
|
|
static const struct i2c_device_id adp5589_id[] = {
|
|
{"adp5589-keys", ADP5589},
|
|
{"adp5585-keys", ADP5585_01},
|
|
{"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, adp5589_id);
|
|
|
|
static struct i2c_driver adp5589_driver = {
|
|
.driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.pm = &adp5589_dev_pm_ops,
|
|
},
|
|
.probe = adp5589_probe,
|
|
.remove = adp5589_remove,
|
|
.id_table = adp5589_id,
|
|
};
|
|
|
|
module_i2c_driver(adp5589_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
|
|
MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");
|