diff options
Diffstat (limited to 'include/linux/mfd/stmpe.h')
| -rw-r--r-- | include/linux/mfd/stmpe.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h new file mode 100644 index 000000000000..cb83883918a7 --- /dev/null +++ b/include/linux/mfd/stmpe.h @@ -0,0 +1,141 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License Terms: GNU General Public License, version 2 + * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson + */ + +#ifndef __LINUX_MFD_STMPE_H +#define __LINUX_MFD_STMPE_H + +#include <linux/mutex.h> + +struct device; +struct regulator; + +enum stmpe_block { + STMPE_BLOCK_GPIO = 1 << 0, + STMPE_BLOCK_KEYPAD = 1 << 1, + STMPE_BLOCK_TOUCHSCREEN = 1 << 2, + STMPE_BLOCK_ADC = 1 << 3, + STMPE_BLOCK_PWM = 1 << 4, + STMPE_BLOCK_ROTATOR = 1 << 5, +}; + +enum stmpe_partnum { + STMPE610, + STMPE801, + STMPE811, + STMPE1601, + STMPE1801, + STMPE2401, + STMPE2403, + STMPE_NBR_PARTS +}; + +/* + * For registers whose locations differ on variants, the correct address is + * obtained by indexing stmpe->regs with one of the following. + */ +enum { + STMPE_IDX_CHIP_ID, + STMPE_IDX_ICR_LSB, + STMPE_IDX_IER_LSB, + STMPE_IDX_ISR_LSB, + STMPE_IDX_ISR_MSB, + STMPE_IDX_GPMR_LSB, + STMPE_IDX_GPSR_LSB, + STMPE_IDX_GPCR_LSB, + STMPE_IDX_GPDR_LSB, + STMPE_IDX_GPEDR_MSB, + STMPE_IDX_GPRER_LSB, + STMPE_IDX_GPFER_LSB, + STMPE_IDX_GPPUR_LSB, + STMPE_IDX_GPPDR_LSB, + STMPE_IDX_GPAFR_U_MSB, + STMPE_IDX_IEGPIOR_LSB, + STMPE_IDX_ISGPIOR_LSB, + STMPE_IDX_ISGPIOR_MSB, + STMPE_IDX_MAX, +}; + + +struct stmpe_variant_info; +struct stmpe_client_info; + +/** + * struct stmpe - STMPE MFD structure + * @vcc: optional VCC regulator + * @vio: optional VIO regulator + * @lock: lock protecting I/O operations + * @irq_lock: IRQ bus lock + * @dev: device, mostly for dev_dbg() + * @irq_domain: IRQ domain + * @client: client - i2c or spi + * @ci: client specific information + * @partnum: part number + * @variant: the detected STMPE model number + * @regs: list of addresses of registers which are at different addresses on + * different variants. Indexed by one of STMPE_IDX_*. + * @irq: irq number for stmpe + * @num_gpios: number of gpios, differs for variants + * @ier: cache of IER registers for bus_lock + * @oldier: cache of IER registers for bus_lock + * @pdata: platform data + */ +struct stmpe { + struct regulator *vcc; + struct regulator *vio; + struct mutex lock; + struct mutex irq_lock; + struct device *dev; + struct irq_domain *domain; + void *client; + struct stmpe_client_info *ci; + enum stmpe_partnum partnum; + struct stmpe_variant_info *variant; + const u8 *regs; + + int irq; + int num_gpios; + u8 ier[2]; + u8 oldier[2]; + struct stmpe_platform_data *pdata; +}; + +extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data); +extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg); +extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length, + u8 *values); +extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length, + const u8 *values); +extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val); +extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, + enum stmpe_block block); +extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks); +extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks); + +#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0) + +/** + * struct stmpe_platform_data - STMPE platform data + * @id: device id to distinguish between multiple STMPEs on the same board + * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*) + * @irq_trigger: IRQ trigger to use for the interrupt to the host + * @autosleep: bool to enable/disable stmpe autosleep + * @autosleep_timeout: inactivity timeout in milliseconds for autosleep + * @irq_over_gpio: true if gpio is used to get irq + * @irq_gpio: gpio number over which irq will be requested (significant only if + * irq_over_gpio is true) + */ +struct stmpe_platform_data { + int id; + unsigned int blocks; + unsigned int irq_trigger; + bool autosleep; + bool irq_over_gpio; + int irq_gpio; + int autosleep_timeout; +}; + +#endif |