diff options
Diffstat (limited to 'drivers/mfd/stmpe.c')
| -rw-r--r-- | drivers/mfd/stmpe.c | 97 |
1 files changed, 84 insertions, 13 deletions
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 67ff3dc5bb45..fc2c6afb31e1 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -241,12 +241,14 @@ int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, enum stmpe_block block) u8 regaddr = stmpe->regs[STMPE_IDX_GPAFR_U_MSB]; int af_bits = variant->af_bits; int numregs = DIV_ROUND_UP(stmpe->num_gpios * af_bits, 8); - int afperreg = 8 / af_bits; int mask = (1 << af_bits) - 1; u8 regs[numregs]; - int af; - int ret; + int af, afperreg, ret; + + if (!variant->get_altfunc) + return 0; + afperreg = 8 / af_bits; mutex_lock(&stmpe->lock); ret = __stmpe_enable(stmpe, STMPE_BLOCK_GPIO); @@ -321,6 +323,50 @@ static struct mfd_cell stmpe_keypad_cell = { }; /* + * STMPE801 + */ +static const u8 stmpe801_regs[] = { + [STMPE_IDX_CHIP_ID] = STMPE801_REG_CHIP_ID, + [STMPE_IDX_ICR_LSB] = STMPE801_REG_SYS_CTRL, + [STMPE_IDX_GPMR_LSB] = STMPE801_REG_GPIO_MP_STA, + [STMPE_IDX_GPSR_LSB] = STMPE801_REG_GPIO_SET_PIN, + [STMPE_IDX_GPCR_LSB] = STMPE801_REG_GPIO_SET_PIN, + [STMPE_IDX_GPDR_LSB] = STMPE801_REG_GPIO_DIR, + [STMPE_IDX_IEGPIOR_LSB] = STMPE801_REG_GPIO_INT_EN, + [STMPE_IDX_ISGPIOR_MSB] = STMPE801_REG_GPIO_INT_STA, + +}; + +static struct stmpe_variant_block stmpe801_blocks[] = { + { + .cell = &stmpe_gpio_cell, + .irq = 0, + .block = STMPE_BLOCK_GPIO, + }, +}; + +static int stmpe801_enable(struct stmpe *stmpe, unsigned int blocks, + bool enable) +{ + if (blocks & STMPE_BLOCK_GPIO) + return 0; + else + return -EINVAL; +} + +static struct stmpe_variant_info stmpe801 = { + .name = "stmpe801", + .id_val = STMPE801_ID, + .id_mask = 0xffff, + .num_gpios = 8, + .regs = stmpe801_regs, + .blocks = stmpe801_blocks, + .num_blocks = ARRAY_SIZE(stmpe801_blocks), + .num_irqs = STMPE801_NR_INTERNAL_IRQS, + .enable = stmpe801_enable, +}; + +/* * Touchscreen (STMPE811 or STMPE610) */ @@ -667,6 +713,7 @@ static struct stmpe_variant_info stmpe2403 = { static struct stmpe_variant_info *stmpe_variant_info[] = { [STMPE610] = &stmpe610, + [STMPE801] = &stmpe801, [STMPE811] = &stmpe811, [STMPE1601] = &stmpe1601, [STMPE2401] = &stmpe2401, @@ -683,6 +730,11 @@ static irqreturn_t stmpe_irq(int irq, void *data) int ret; int i; + if (variant->id_val == STMPE801_ID) { + handle_nested_irq(stmpe->irq_base); + return IRQ_HANDLED; + } + ret = stmpe_block_read(stmpe, israddr, num, isr); if (ret < 0) return IRQ_NONE; @@ -769,14 +821,17 @@ static struct irq_chip stmpe_irq_chip = { static int __devinit stmpe_irq_init(struct stmpe *stmpe) { + struct irq_chip *chip = NULL; int num_irqs = stmpe->variant->num_irqs; int base = stmpe->irq_base; int irq; + if (stmpe->variant->id_val != STMPE801_ID) + chip = &stmpe_irq_chip; + for (irq = base; irq < base + num_irqs; irq++) { irq_set_chip_data(irq, stmpe); - irq_set_chip_and_handler(irq, &stmpe_irq_chip, - handle_edge_irq); + irq_set_chip_and_handler(irq, chip, handle_edge_irq); irq_set_nested_thread(irq, 1); #ifdef CONFIG_ARM set_irq_flags(irq, IRQF_VALID); @@ -808,7 +863,7 @@ static int __devinit stmpe_chip_init(struct stmpe *stmpe) unsigned int irq_trigger = stmpe->pdata->irq_trigger; int autosleep_timeout = stmpe->pdata->autosleep_timeout; struct stmpe_variant_info *variant = stmpe->variant; - u8 icr = STMPE_ICR_LSB_GIM; + u8 icr; unsigned int id; u8 data[2]; int ret; @@ -831,16 +886,32 @@ static int __devinit stmpe_chip_init(struct stmpe *stmpe) if (ret) return ret; - if (irq_trigger == IRQF_TRIGGER_FALLING || - irq_trigger == IRQF_TRIGGER_RISING) - icr |= STMPE_ICR_LSB_EDGE; + if (id == STMPE801_ID) + icr = STMPE801_REG_SYS_CTRL_INT_EN; + else + icr = STMPE_ICR_LSB_GIM; + + /* STMPE801 doesn't support Edge interrupts */ + if (id != STMPE801_ID) { + if (irq_trigger == IRQF_TRIGGER_FALLING || + irq_trigger == IRQF_TRIGGER_RISING) + icr |= STMPE_ICR_LSB_EDGE; + } if (irq_trigger == IRQF_TRIGGER_RISING || - irq_trigger == IRQF_TRIGGER_HIGH) - icr |= STMPE_ICR_LSB_HIGH; + irq_trigger == IRQF_TRIGGER_HIGH) { + if (id == STMPE801_ID) + icr |= STMPE801_REG_SYS_CTRL_INT_HI; + else + icr |= STMPE_ICR_LSB_HIGH; + } - if (stmpe->pdata->irq_invert_polarity) - icr ^= STMPE_ICR_LSB_HIGH; + if (stmpe->pdata->irq_invert_polarity) { + if (id == STMPE801_ID) + icr ^= STMPE801_REG_SYS_CTRL_INT_HI; + else + icr ^= STMPE_ICR_LSB_HIGH; + } if (stmpe->pdata->autosleep) { ret = stmpe_autosleep(stmpe, autosleep_timeout); |