2 * Copyright (C) ST-Ericsson SA 2010
4 * License Terms: GNU General Public License, version 2
5 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
8 #ifndef __LINUX_MFD_STMPE_H
9 #define __LINUX_MFD_STMPE_H
11 #include <linux/device.h>
14 STMPE_BLOCK_GPIO = 1 << 0,
15 STMPE_BLOCK_KEYPAD = 1 << 1,
16 STMPE_BLOCK_TOUCHSCREEN = 1 << 2,
17 STMPE_BLOCK_ADC = 1 << 3,
18 STMPE_BLOCK_PWM = 1 << 4,
19 STMPE_BLOCK_ROTATOR = 1 << 5,
31 * For registers whose locations differ on variants, the correct address is
32 * obtained by indexing stmpe->regs with one of the following.
46 STMPE_IDX_GPAFR_U_MSB,
47 STMPE_IDX_IEGPIOR_LSB,
48 STMPE_IDX_ISGPIOR_MSB,
53 struct stmpe_variant_info;
54 struct stmpe_client_info;
57 * struct stmpe - STMPE MFD structure
58 * @lock: lock protecting I/O operations
59 * @irq_lock: IRQ bus lock
60 * @dev: device, mostly for dev_dbg()
61 * @client: client - i2c or spi
62 * @ci: client specific information
63 * @partnum: part number
64 * @variant: the detected STMPE model number
65 * @regs: list of addresses of registers which are at different addresses on
66 * different variants. Indexed by one of STMPE_IDX_*.
67 * @irq: irq number for stmpe
68 * @irq_base: starting IRQ number for internal IRQs
69 * @num_gpios: number of gpios, differs for variants
70 * @ier: cache of IER registers for bus_lock
71 * @oldier: cache of IER registers for bus_lock
72 * @pdata: platform data
76 struct mutex irq_lock;
79 struct stmpe_client_info *ci;
80 enum stmpe_partnum partnum;
81 struct stmpe_variant_info *variant;
89 struct stmpe_platform_data *pdata;
92 extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data);
93 extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg);
94 extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length,
96 extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
98 extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val);
99 extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins,
100 enum stmpe_block block);
101 extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks);
102 extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
104 struct matrix_keymap_data;
107 * struct stmpe_keypad_platform_data - STMPE keypad platform data
108 * @keymap_data: key map table and size
109 * @debounce_ms: debounce interval, in ms. Maximum is
110 * %STMPE_KEYPAD_MAX_DEBOUNCE.
111 * @scan_count: number of key scanning cycles to confirm key data.
112 * Maximum is %STMPE_KEYPAD_MAX_SCAN_COUNT.
113 * @no_autorepeat: disable key autorepeat
115 struct stmpe_keypad_platform_data {
116 struct matrix_keymap_data *keymap_data;
117 unsigned int debounce_ms;
118 unsigned int scan_count;
122 #define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
125 * struct stmpe_gpio_platform_data - STMPE GPIO platform data
126 * @gpio_base: first gpio number assigned. A maximum of
127 * %STMPE_NR_GPIOS GPIOs will be allocated.
128 * @norequest_mask: bitmask specifying which GPIOs should _not_ be
129 * requestable due to different usage (e.g. touch, keypad)
130 * STMPE_GPIO_NOREQ_* macros can be used here.
131 * @setup: board specific setup callback.
132 * @remove: board specific remove callback
134 struct stmpe_gpio_platform_data {
136 unsigned norequest_mask;
137 void (*setup)(struct stmpe *stmpe, unsigned gpio_base);
138 void (*remove)(struct stmpe *stmpe, unsigned gpio_base);
142 * struct stmpe_ts_platform_data - stmpe811 touch screen controller platform
144 * @sample_time: ADC converstion time in number of clock.
145 * (0 -> 36 clocks, 1 -> 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks,
146 * 4 -> 80 clocks, 5 -> 96 clocks, 6 -> 144 clocks),
148 * @mod_12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC)
149 * @ref_sel: ADC reference source
150 * (0 -> internal reference, 1 -> external reference)
151 * @adc_freq: ADC Clock speed
152 * (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz)
153 * @ave_ctrl: Sample average control
154 * (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
155 * @touch_det_delay: Touch detect interrupt delay
156 * (0 -> 10 us, 1 -> 50 us, 2 -> 100 us, 3 -> 500 us,
157 * 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms)
159 * @settling: Panel driver settling time
160 * (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3 -> 1 ms,
161 * 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms)
163 * @fraction_z: Length of the fractional part in z
164 * (fraction_z ([0..7]) = Count of the fractional part)
166 * @i_drive: current limit value of the touchscreen drivers
167 * (0 -> 20 mA typical 35 mA max, 1 -> 50 mA typical 80 mA max)
170 struct stmpe_ts_platform_data {
183 * struct stmpe_platform_data - STMPE platform data
184 * @id: device id to distinguish between multiple STMPEs on the same board
185 * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*)
186 * @irq_trigger: IRQ trigger to use for the interrupt to the host
187 * @irq_invert_polarity: IRQ line is connected with reversed polarity
188 * @autosleep: bool to enable/disable stmpe autosleep
189 * @autosleep_timeout: inactivity timeout in milliseconds for autosleep
190 * @irq_base: base IRQ number. %STMPE_NR_IRQS irqs will be used, or
191 * %STMPE_NR_INTERNAL_IRQS if the GPIO driver is not used.
192 * @irq_over_gpio: true if gpio is used to get irq
193 * @irq_gpio: gpio number over which irq will be requested (significant only if
194 * irq_over_gpio is true)
195 * @gpio: GPIO-specific platform data
196 * @keypad: keypad-specific platform data
197 * @ts: touchscreen-specific platform data
199 struct stmpe_platform_data {
203 unsigned int irq_trigger;
204 bool irq_invert_polarity;
208 int autosleep_timeout;
210 struct stmpe_gpio_platform_data *gpio;
211 struct stmpe_keypad_platform_data *keypad;
212 struct stmpe_ts_platform_data *ts;
215 #define STMPE_NR_INTERNAL_IRQS 9
216 #define STMPE_INT_GPIO(x) (STMPE_NR_INTERNAL_IRQS + (x))
218 #define STMPE_NR_GPIOS 24
219 #define STMPE_NR_IRQS STMPE_INT_GPIO(STMPE_NR_GPIOS)