diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/mfd/stmpe-i2c.c | 1 | ||||
| -rw-r--r-- | drivers/mfd/stmpe.c | 97 | ||||
| -rw-r--r-- | drivers/mfd/stmpe.h | 49 |
4 files changed, 147 insertions, 1 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 533ce2c9435b..9d64e321e8c0 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -393,6 +393,7 @@ config MFD_STMPE STMPE811: GPIO, Touchscreen STMPE1601: GPIO, Keypad + STMPE1801: GPIO, Keypad STMPE2401: GPIO, Keypad STMPE2403: GPIO, Keypad diff --git a/drivers/mfd/stmpe-i2c.c b/drivers/mfd/stmpe-i2c.c index fd5fcb630685..0da02e11d58e 100644 --- a/drivers/mfd/stmpe-i2c.c +++ b/drivers/mfd/stmpe-i2c.c @@ -75,6 +75,7 @@ static const struct i2c_device_id stmpe_i2c_id[] = { { "stmpe801", STMPE801 }, { "stmpe811", STMPE811 }, { "stmpe1601", STMPE1601 }, + { "stmpe1801", STMPE1801 }, { "stmpe2401", STMPE2401 }, { "stmpe2403", STMPE2403 }, { } diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index bc8587777993..bbccd514d3ec 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -19,6 +19,7 @@ #include <linux/pm.h> #include <linux/slab.h> #include <linux/mfd/core.h> +#include <linux/delay.h> #include "stmpe.h" static int __stmpe_enable(struct stmpe *stmpe, unsigned int blocks) @@ -643,6 +644,88 @@ static struct stmpe_variant_info stmpe1601 = { }; /* + * STMPE1801 + */ +static const u8 stmpe1801_regs[] = { + [STMPE_IDX_CHIP_ID] = STMPE1801_REG_CHIP_ID, + [STMPE_IDX_ICR_LSB] = STMPE1801_REG_INT_CTRL_LOW, + [STMPE_IDX_IER_LSB] = STMPE1801_REG_INT_EN_MASK_LOW, + [STMPE_IDX_ISR_LSB] = STMPE1801_REG_INT_STA_LOW, + [STMPE_IDX_GPMR_LSB] = STMPE1801_REG_GPIO_MP_LOW, + [STMPE_IDX_GPSR_LSB] = STMPE1801_REG_GPIO_SET_LOW, + [STMPE_IDX_GPCR_LSB] = STMPE1801_REG_GPIO_CLR_LOW, + [STMPE_IDX_GPDR_LSB] = STMPE1801_REG_GPIO_SET_DIR_LOW, + [STMPE_IDX_GPRER_LSB] = STMPE1801_REG_GPIO_RE_LOW, + [STMPE_IDX_GPFER_LSB] = STMPE1801_REG_GPIO_FE_LOW, + [STMPE_IDX_IEGPIOR_LSB] = STMPE1801_REG_INT_EN_GPIO_MASK_LOW, + [STMPE_IDX_ISGPIOR_LSB] = STMPE1801_REG_INT_STA_GPIO_LOW, +}; + +static struct stmpe_variant_block stmpe1801_blocks[] = { + { + .cell = &stmpe_gpio_cell, + .irq = STMPE1801_IRQ_GPIOC, + .block = STMPE_BLOCK_GPIO, + }, + { + .cell = &stmpe_keypad_cell, + .irq = STMPE1801_IRQ_KEYPAD, + .block = STMPE_BLOCK_KEYPAD, + }, +}; + +static int stmpe1801_enable(struct stmpe *stmpe, unsigned int blocks, + bool enable) +{ + unsigned int mask = 0; + if (blocks & STMPE_BLOCK_GPIO) + mask |= STMPE1801_MSK_INT_EN_GPIO; + + if (blocks & STMPE_BLOCK_KEYPAD) + mask |= STMPE1801_MSK_INT_EN_KPC; + + return __stmpe_set_bits(stmpe, STMPE1801_REG_INT_EN_MASK_LOW, mask, + enable ? mask : 0); +} + +static int stmpe1801_reset(struct stmpe *stmpe) +{ + unsigned long timeout; + int ret = 0; + + ret = __stmpe_set_bits(stmpe, STMPE1801_REG_SYS_CTRL, + STMPE1801_MSK_SYS_CTRL_RESET, STMPE1801_MSK_SYS_CTRL_RESET); + if (ret < 0) + return ret; + + timeout = jiffies + msecs_to_jiffies(100); + while (time_before(jiffies, timeout)) { + ret = __stmpe_reg_read(stmpe, STMPE1801_REG_SYS_CTRL); + if (ret < 0) + return ret; + if (!(ret & STMPE1801_MSK_SYS_CTRL_RESET)) + return 0; + usleep_range(100, 200); + }; + return -EIO; +} + +static struct stmpe_variant_info stmpe1801 = { + .name = "stmpe1801", + .id_val = STMPE1801_ID, + .id_mask = 0xfff0, + .num_gpios = 18, + .af_bits = 0, + .regs = stmpe1801_regs, + .blocks = stmpe1801_blocks, + .num_blocks = ARRAY_SIZE(stmpe1801_blocks), + .num_irqs = STMPE1801_NR_INTERNAL_IRQS, + .enable = stmpe1801_enable, + /* stmpe1801 do not have any gpio alternate function */ + .get_altfunc = NULL, +}; + +/* * STMPE24XX */ @@ -740,6 +823,7 @@ static struct stmpe_variant_info *stmpe_variant_info[STMPE_NBR_PARTS] = { [STMPE801] = &stmpe801, [STMPE811] = &stmpe811, [STMPE1601] = &stmpe1601, + [STMPE1801] = &stmpe1801, [STMPE2401] = &stmpe2401, [STMPE2403] = &stmpe2403, }; @@ -759,7 +843,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) struct stmpe *stmpe = data; struct stmpe_variant_info *variant = stmpe->variant; int num = DIV_ROUND_UP(variant->num_irqs, 8); - u8 israddr = stmpe->regs[STMPE_IDX_ISR_MSB]; + u8 israddr; u8 isr[num]; int ret; int i; @@ -771,6 +855,11 @@ static irqreturn_t stmpe_irq(int irq, void *data) return IRQ_HANDLED; } + if (variant->id_val == STMPE1801_ID) + israddr = stmpe->regs[STMPE_IDX_ISR_LSB]; + else + israddr = stmpe->regs[STMPE_IDX_ISR_MSB]; + ret = stmpe_block_read(stmpe, israddr, num, isr); if (ret < 0) return IRQ_NONE; @@ -938,6 +1027,12 @@ static int stmpe_chip_init(struct stmpe *stmpe) if (ret) return ret; + if (id == STMPE1801_ID) { + ret = stmpe1801_reset(stmpe); + if (ret < 0) + return ret; + } + if (stmpe->irq >= 0) { if (id == STMPE801_ID) icr = STMPE801_REG_SYS_CTRL_INT_EN; diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h index 7b8e13f5b764..ff2b09ba8797 100644 --- a/drivers/mfd/stmpe.h +++ b/drivers/mfd/stmpe.h @@ -199,6 +199,55 @@ int stmpe_remove(struct stmpe *stmpe); #define STPME1601_AUTOSLEEP_ENABLE (1 << 3) /* + * STMPE1801 + */ +#define STMPE1801_ID 0xc110 +#define STMPE1801_NR_INTERNAL_IRQS 5 +#define STMPE1801_IRQ_KEYPAD_COMBI 4 +#define STMPE1801_IRQ_GPIOC 3 +#define STMPE1801_IRQ_KEYPAD_OVER 2 +#define STMPE1801_IRQ_KEYPAD 1 +#define STMPE1801_IRQ_WAKEUP 0 + +#define STMPE1801_REG_CHIP_ID 0x00 +#define STMPE1801_REG_SYS_CTRL 0x02 +#define STMPE1801_REG_INT_CTRL_LOW 0x04 +#define STMPE1801_REG_INT_EN_MASK_LOW 0x06 +#define STMPE1801_REG_INT_STA_LOW 0x08 +#define STMPE1801_REG_INT_EN_GPIO_MASK_LOW 0x0A +#define STMPE1801_REG_INT_EN_GPIO_MASK_MID 0x0B +#define STMPE1801_REG_INT_EN_GPIO_MASK_HIGH 0x0C +#define STMPE1801_REG_INT_STA_GPIO_LOW 0x0D +#define STMPE1801_REG_INT_STA_GPIO_MID 0x0E +#define STMPE1801_REG_INT_STA_GPIO_HIGH 0x0F +#define STMPE1801_REG_GPIO_SET_LOW 0x10 +#define STMPE1801_REG_GPIO_SET_MID 0x11 +#define STMPE1801_REG_GPIO_SET_HIGH 0x12 +#define STMPE1801_REG_GPIO_CLR_LOW 0x13 +#define STMPE1801_REG_GPIO_CLR_MID 0x14 +#define STMPE1801_REG_GPIO_CLR_HIGH 0x15 +#define STMPE1801_REG_GPIO_MP_LOW 0x16 +#define STMPE1801_REG_GPIO_MP_MID 0x17 +#define STMPE1801_REG_GPIO_MP_HIGH 0x18 +#define STMPE1801_REG_GPIO_SET_DIR_LOW 0x19 +#define STMPE1801_REG_GPIO_SET_DIR_MID 0x1A +#define STMPE1801_REG_GPIO_SET_DIR_HIGH 0x1B +#define STMPE1801_REG_GPIO_RE_LOW 0x1C +#define STMPE1801_REG_GPIO_RE_MID 0x1D +#define STMPE1801_REG_GPIO_RE_HIGH 0x1E +#define STMPE1801_REG_GPIO_FE_LOW 0x1F +#define STMPE1801_REG_GPIO_FE_MID 0x20 +#define STMPE1801_REG_GPIO_FE_HIGH 0x21 +#define STMPE1801_REG_GPIO_PULL_UP_LOW 0x22 +#define STMPE1801_REG_GPIO_PULL_UP_MID 0x23 +#define STMPE1801_REG_GPIO_PULL_UP_HIGH 0x24 + +#define STMPE1801_MSK_SYS_CTRL_RESET (1 << 7) + +#define STMPE1801_MSK_INT_EN_KPC (1 << 1) +#define STMPE1801_MSK_INT_EN_GPIO (1 << 3) + +/* * STMPE24xx */ |