| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* |
| 3 | * Register definitions and functions for: |
| 4 | * Philips UCB1400 driver |
| 5 | * |
| 6 | * Based on ucb1400_ts: |
| 7 | * Author: Nicolas Pitre |
| 8 | * Created: September 25, 2006 |
| 9 | * Copyright: MontaVista Software, Inc. |
| 10 | * |
| 11 | * Spliting done by: Marek Vasut <marek.vasut@gmail.com> |
| 12 | * If something doesn't work and it worked before spliting, e-mail me, |
| 13 | * dont bother Nicolas please ;-) |
| 14 | * |
| 15 | * This code is heavily based on ucb1x00-*.c copyrighted by Russell King |
| 16 | * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has |
| 17 | * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _LINUX__UCB1400_H |
| 21 | #define _LINUX__UCB1400_H |
| 22 | |
| 23 | #include <sound/ac97_codec.h> |
| 24 | #include <linux/mutex.h> |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/gpio.h> |
| 27 | |
| 28 | /* |
| 29 | * UCB1400 AC-link registers |
| 30 | */ |
| 31 | |
| 32 | #define UCB_IO_DATA 0x5a |
| 33 | #define UCB_IO_DIR 0x5c |
| 34 | #define UCB_IE_RIS 0x5e |
| 35 | #define UCB_IE_FAL 0x60 |
| 36 | #define UCB_IE_STATUS 0x62 |
| 37 | #define UCB_IE_CLEAR 0x62 |
| 38 | #define UCB_IE_ADC (1 << 11) |
| 39 | #define UCB_IE_TSPX (1 << 12) |
| 40 | |
| 41 | #define UCB_TS_CR 0x64 |
| 42 | #define UCB_TS_CR_TSMX_POW (1 << 0) |
| 43 | #define UCB_TS_CR_TSPX_POW (1 << 1) |
| 44 | #define UCB_TS_CR_TSMY_POW (1 << 2) |
| 45 | #define UCB_TS_CR_TSPY_POW (1 << 3) |
| 46 | #define UCB_TS_CR_TSMX_GND (1 << 4) |
| 47 | #define UCB_TS_CR_TSPX_GND (1 << 5) |
| 48 | #define UCB_TS_CR_TSMY_GND (1 << 6) |
| 49 | #define UCB_TS_CR_TSPY_GND (1 << 7) |
| 50 | #define UCB_TS_CR_MODE_INT (0 << 8) |
| 51 | #define UCB_TS_CR_MODE_PRES (1 << 8) |
| 52 | #define UCB_TS_CR_MODE_POS (2 << 8) |
| 53 | #define UCB_TS_CR_BIAS_ENA (1 << 11) |
| 54 | #define UCB_TS_CR_TSPX_LOW (1 << 12) |
| 55 | #define UCB_TS_CR_TSMX_LOW (1 << 13) |
| 56 | |
| 57 | #define UCB_ADC_CR 0x66 |
| 58 | #define UCB_ADC_SYNC_ENA (1 << 0) |
| 59 | #define UCB_ADC_VREFBYP_CON (1 << 1) |
| 60 | #define UCB_ADC_INP_TSPX (0 << 2) |
| 61 | #define UCB_ADC_INP_TSMX (1 << 2) |
| 62 | #define UCB_ADC_INP_TSPY (2 << 2) |
| 63 | #define UCB_ADC_INP_TSMY (3 << 2) |
| 64 | #define UCB_ADC_INP_AD0 (4 << 2) |
| 65 | #define UCB_ADC_INP_AD1 (5 << 2) |
| 66 | #define UCB_ADC_INP_AD2 (6 << 2) |
| 67 | #define UCB_ADC_INP_AD3 (7 << 2) |
| 68 | #define UCB_ADC_EXT_REF (1 << 5) |
| 69 | #define UCB_ADC_START (1 << 7) |
| 70 | #define UCB_ADC_ENA (1 << 15) |
| 71 | |
| 72 | #define UCB_ADC_DATA 0x68 |
| 73 | #define UCB_ADC_DAT_VALID (1 << 15) |
| 74 | |
| 75 | #define UCB_FCSR 0x6c |
| 76 | #define UCB_FCSR_AVE (1 << 12) |
| 77 | |
| 78 | #define UCB_ADC_DAT_MASK 0x3ff |
| 79 | |
| 80 | #define UCB_ID 0x7e |
| 81 | #define UCB_ID_1400 0x4304 |
| 82 | |
| 83 | struct ucb1400_gpio { |
| 84 | struct gpio_chip gc; |
| 85 | struct snd_ac97 *ac97; |
| 86 | int gpio_offset; |
| 87 | int (*gpio_setup)(struct device *dev, int ngpio); |
| 88 | int (*gpio_teardown)(struct device *dev, int ngpio); |
| 89 | }; |
| 90 | |
| 91 | struct ucb1400_ts { |
| 92 | struct input_dev *ts_idev; |
| 93 | int id; |
| 94 | int irq; |
| 95 | struct snd_ac97 *ac97; |
| 96 | wait_queue_head_t ts_wait; |
| 97 | bool stopped; |
| 98 | }; |
| 99 | |
| 100 | struct ucb1400 { |
| 101 | struct platform_device *ucb1400_ts; |
| 102 | struct platform_device *ucb1400_gpio; |
| 103 | }; |
| 104 | |
| 105 | struct ucb1400_pdata { |
| 106 | int irq; |
| 107 | int gpio_offset; |
| 108 | int (*gpio_setup)(struct device *dev, int ngpio); |
| 109 | int (*gpio_teardown)(struct device *dev, int ngpio); |
| 110 | }; |
| 111 | |
| 112 | static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg) |
| 113 | { |
| 114 | return ac97->bus->ops->read(ac97, reg); |
| 115 | } |
| 116 | |
| 117 | static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val) |
| 118 | { |
| 119 | ac97->bus->ops->write(ac97, reg, val); |
| 120 | } |
| 121 | |
| 122 | static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio) |
| 123 | { |
| 124 | return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio); |
| 125 | } |
| 126 | |
| 127 | static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio, |
| 128 | u16 val) |
| 129 | { |
| 130 | ucb1400_reg_write(ac97, UCB_IO_DATA, val ? |
| 131 | ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) : |
| 132 | ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio)); |
| 133 | } |
| 134 | |
| 135 | static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio) |
| 136 | { |
| 137 | return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio); |
| 138 | } |
| 139 | |
| 140 | static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio, |
| 141 | u16 dir) |
| 142 | { |
| 143 | ucb1400_reg_write(ac97, UCB_IO_DIR, dir ? |
| 144 | ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) : |
| 145 | ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio)); |
| 146 | } |
| 147 | |
| 148 | static inline void ucb1400_adc_enable(struct snd_ac97 *ac97) |
| 149 | { |
| 150 | ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA); |
| 151 | } |
| 152 | |
| 153 | static inline void ucb1400_adc_disable(struct snd_ac97 *ac97) |
| 154 | { |
| 155 | ucb1400_reg_write(ac97, UCB_ADC_CR, 0); |
| 156 | } |
| 157 | |
| 158 | |
| 159 | unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel, |
| 160 | int adcsync); |
| 161 | |
| 162 | #endif |