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input/tc3589x: add tc3589x keypad support

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Add support for the keypad controller module found on the
TC3589X devices. This driver default adds the support for
TC35893 device.

Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
[Some minor fixups for compilation]
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
This commit is contained in:
Sundar Iyer 2010-12-21 15:53:31 +05:30 • committed by Linus Walleij
parent 11c8ea81cc
commit 09c730a488
5 changed files with 562 additions and 1 deletions
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52
include/linux/mfd/tc3589x.h
View file

@ -20,6 +20,17 @@ enum tx3589x_block {
#define TC3589x_RSTCTRL_KBDRST (1 << 1)
#define TC3589x_RSTCTRL_GPIRST (1 << 0)
/* Keyboard Configuration Registers */
#define TC3589x_KBDSETTLE_REG 0x01
#define TC3589x_KBDBOUNCE 0x02
#define TC3589x_KBDSIZE 0x03
#define TC3589x_KBCFG_LSB 0x04
#define TC3589x_KBCFG_MSB 0x05
#define TC3589x_KBDIC 0x08
#define TC3589x_KBDMSK 0x09
#define TC3589x_EVTCODE_FIFO 0x10
#define TC3589x_KBDMFS 0x8F
#define TC3589x_IRQST 0x91
#define TC3589x_MANFCODE_MAGIC 0x03
@ -35,6 +46,14 @@ enum tx3589x_block {
#define TC3589x_EXTRSTN 0x83
#define TC3589x_RSTINTCLR 0x84
/* Pull up/down configuration registers */
#define TC3589x_IOCFG 0xA7
#define TC3589x_IOPULLCFG0_LSB 0xAA
#define TC3589x_IOPULLCFG0_MSB 0xAB
#define TC3589x_IOPULLCFG1_LSB 0xAC
#define TC3589x_IOPULLCFG1_MSB 0xAD
#define TC3589x_IOPULLCFG2_LSB 0xAE
#define TC3589x_GPIOIS0 0xC9
#define TC3589x_GPIOIS1 0xCA
#define TC3589x_GPIOIS2 0xCB
@ -112,6 +131,37 @@ extern int tc3589x_block_write(struct tc3589x *tc3589x, u8 reg, u8 length,
const u8 *values);
extern int tc3589x_set_bits(struct tc3589x *tc3589x, u8 reg, u8 mask, u8 val);
/*
* Keypad related platform specific constants
* These values may be modified for fine tuning
*/
#define TC_KPD_ROWS 0x8
#define TC_KPD_COLUMNS 0x8
#define TC_KPD_DEBOUNCE_PERIOD 0xA3
#define TC_KPD_SETTLE_TIME 0xA3
/**
* struct tc35893_platform_data - data structure for platform specific data
* @keymap_data: matrix scan code table for keycodes
* @krow: mask for available rows, value is 0xFF
* @kcol: mask for available columns, value is 0xFF
* @debounce_period: platform specific debounce time
* @settle_time: platform specific settle down time
* @irqtype: type of interrupt, falling or rising edge
* @enable_wakeup: specifies if keypad event can wake up system from sleep
* @no_autorepeat: flag for auto repetition
*/
struct tc3589x_keypad_platform_data {
const struct matrix_keymap_data *keymap_data;
u8 krow;
u8 kcol;
u8 debounce_period;
u8 settle_time;
unsigned long irqtype;
bool enable_wakeup;
bool no_autorepeat;
};
/**
* struct tc3589x_gpio_platform_data - TC3589x GPIO platform data
* @gpio_base: first gpio number assigned to TC3589x. A maximum of
@ -130,11 +180,13 @@ struct tc3589x_gpio_platform_data {
* @block: bitmask of blocks to enable (use TC3589x_BLOCK_*)
* @irq_base: base IRQ number. %TC3589x_NR_IRQS irqs will be used.
* @gpio: GPIO-specific platform data
* @keypad: keypad-specific platform data
*/
struct tc3589x_platform_data {
unsigned int block;
int irq_base;
struct tc3589x_gpio_platform_data *gpio;
const struct tc3589x_keypad_platform_data *keypad;
};
#define TC3589x_NR_GPIOS 24