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-rw-r--r--kernel/include/linux/mfd/stmpe.h185
1 files changed, 185 insertions, 0 deletions
diff --git a/kernel/include/linux/mfd/stmpe.h b/kernel/include/linux/mfd/stmpe.h
new file mode 100644
index 000000000..c9d869027
--- /dev/null
+++ b/kernel/include/linux/mfd/stmpe.h
@@ -0,0 +1,185 @@
+/*
+ * 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_ts_platform_data - stmpe811 touch screen controller platform
+ * data
+ * @sample_time: ADC converstion time in number of clock.
+ * (0 -> 36 clocks, 1 -> 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks,
+ * 4 -> 80 clocks, 5 -> 96 clocks, 6 -> 144 clocks),
+ * recommended is 4.
+ * @mod_12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC)
+ * @ref_sel: ADC reference source
+ * (0 -> internal reference, 1 -> external reference)
+ * @adc_freq: ADC Clock speed
+ * (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz)
+ * @ave_ctrl: Sample average control
+ * (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
+ * @touch_det_delay: Touch detect interrupt delay
+ * (0 -> 10 us, 1 -> 50 us, 2 -> 100 us, 3 -> 500 us,
+ * 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms)
+ * recommended is 3
+ * @settling: Panel driver settling time
+ * (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3 -> 1 ms,
+ * 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms)
+ * recommended is 2
+ * @fraction_z: Length of the fractional part in z
+ * (fraction_z ([0..7]) = Count of the fractional part)
+ * recommended is 7
+ * @i_drive: current limit value of the touchscreen drivers
+ * (0 -> 20 mA typical 35 mA max, 1 -> 50 mA typical 80 mA max)
+ *
+ * */
+struct stmpe_ts_platform_data {
+ u8 sample_time;
+ u8 mod_12b;
+ u8 ref_sel;
+ u8 adc_freq;
+ u8 ave_ctrl;
+ u8 touch_det_delay;
+ u8 settling;
+ u8 fraction_z;
+ u8 i_drive;
+};
+
+/**
+ * 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)
+ * @ts: touchscreen-specific platform data
+ */
+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;
+
+ struct stmpe_ts_platform_data *ts;
+};
+
+#endif