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stmpe.h
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1 /*
2  * Copyright (C) ST-Ericsson SA 2010
3  *
4  * License Terms: GNU General Public License, version 2
5  * Author: Rabin Vincent <[email protected]> for ST-Ericsson
6  */
7 
8 #ifndef __LINUX_MFD_STMPE_H
9 #define __LINUX_MFD_STMPE_H
10 
11 #include <linux/mutex.h>
12 
13 struct device;
14 
15 enum stmpe_block {
16  STMPE_BLOCK_GPIO = 1 << 0,
17  STMPE_BLOCK_KEYPAD = 1 << 1,
18  STMPE_BLOCK_TOUCHSCREEN = 1 << 2,
19  STMPE_BLOCK_ADC = 1 << 3,
20  STMPE_BLOCK_PWM = 1 << 4,
21  STMPE_BLOCK_ROTATOR = 1 << 5,
22 };
23 
24 enum stmpe_partnum {
25  STMPE610,
26  STMPE801,
27  STMPE811,
28  STMPE1601,
29  STMPE2401,
30  STMPE2403,
31  STMPE_NBR_PARTS
32 };
33 
34 /*
35  * For registers whose locations differ on variants, the correct address is
36  * obtained by indexing stmpe->regs with one of the following.
37  */
38 enum {
39  STMPE_IDX_CHIP_ID,
40  STMPE_IDX_ICR_LSB,
41  STMPE_IDX_IER_LSB,
42  STMPE_IDX_ISR_MSB,
43  STMPE_IDX_GPMR_LSB,
44  STMPE_IDX_GPSR_LSB,
45  STMPE_IDX_GPCR_LSB,
46  STMPE_IDX_GPDR_LSB,
47  STMPE_IDX_GPEDR_MSB,
48  STMPE_IDX_GPRER_LSB,
49  STMPE_IDX_GPFER_LSB,
50  STMPE_IDX_GPAFR_U_MSB,
51  STMPE_IDX_IEGPIOR_LSB,
52  STMPE_IDX_ISGPIOR_MSB,
53  STMPE_IDX_MAX,
54 };
55 
56 
57 struct stmpe_variant_info;
58 struct stmpe_client_info;
59 
78 struct stmpe {
79  struct mutex lock;
80  struct mutex irq_lock;
81  struct device *dev;
82  void *client;
83  struct stmpe_client_info *ci;
84  enum stmpe_partnum partnum;
85  struct stmpe_variant_info *variant;
86  const u8 *regs;
87 
88  int irq;
89  int irq_base;
90  int num_gpios;
91  u8 ier[2];
92  u8 oldier[2];
93  struct stmpe_platform_data *pdata;
94 };
95 
96 extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data);
97 extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg);
98 extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length,
99  u8 *values);
100 extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
101  const u8 *values);
102 extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val);
103 extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins,
104  enum stmpe_block block);
105 extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks);
106 extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
107 
108 struct matrix_keymap_data;
109 
119 struct stmpe_keypad_platform_data {
120  const struct matrix_keymap_data *keymap_data;
121  unsigned int debounce_ms;
122  unsigned int scan_count;
123  bool no_autorepeat;
124 };
125 
126 #define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
127 
138 struct stmpe_gpio_platform_data {
139  int gpio_base;
140  unsigned norequest_mask;
141  void (*setup)(struct stmpe *stmpe, unsigned gpio_base);
142  void (*remove)(struct stmpe *stmpe, unsigned gpio_base);
143 };
144 
174 struct stmpe_ts_platform_data {
175  u8 sample_time;
176  u8 mod_12b;
177  u8 ref_sel;
178  u8 adc_freq;
179  u8 ave_ctrl;
180  u8 touch_det_delay;
181  u8 settling;
182  u8 fraction_z;
183  u8 i_drive;
184 };
185 
203 struct stmpe_platform_data {
204  int id;
205  unsigned int blocks;
206  int irq_base;
207  unsigned int irq_trigger;
208  bool irq_invert_polarity;
209  bool autosleep;
210  bool irq_over_gpio;
211  int irq_gpio;
212  int autosleep_timeout;
213 
214  struct stmpe_gpio_platform_data *gpio;
215  struct stmpe_keypad_platform_data *keypad;
216  struct stmpe_ts_platform_data *ts;
217 };
218 
219 #define STMPE_NR_INTERNAL_IRQS 9
220 #define STMPE_INT_GPIO(x) (STMPE_NR_INTERNAL_IRQS + (x))
221 
222 #define STMPE_NR_GPIOS 24
223 #define STMPE_NR_IRQS STMPE_INT_GPIO(STMPE_NR_GPIOS)
224 
225 #endif
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