forked from Minki/linux
mfd: Add STMPE1600 support
STMPE1600 is a 16-bit port expander. Datasheet is available here : http://www2.st.com/content/st_com/en/products/interfaces-and-transceivers/ i-o-expanders-and-level-translators/i-o-expanders/stmpe1600.html Signed-off-by: Amelie DELAUNAY <amelie.delaunay@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Patrice Chotard
Lee Jones
parent
bd495916f2
commit
6bb9f0d933
@ -57,6 +57,7 @@ static const struct of_device_id stmpe_of_match[] = {
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{ .compatible = "st,stmpe610", .data = (void *)STMPE610, },
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{ .compatible = "st,stmpe801", .data = (void *)STMPE801, },
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{ .compatible = "st,stmpe811", .data = (void *)STMPE811, },
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{ .compatible = "st,stmpe1600", .data = (void *)STMPE1600, },
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{ .compatible = "st,stmpe1601", .data = (void *)STMPE1601, },
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{ .compatible = "st,stmpe1801", .data = (void *)STMPE1801, },
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{ .compatible = "st,stmpe2401", .data = (void *)STMPE2401, },
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@ -101,6 +102,7 @@ static const struct i2c_device_id stmpe_i2c_id[] = {
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{ "stmpe610", STMPE610 },
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{ "stmpe801", STMPE801 },
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{ "stmpe811", STMPE811 },
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{ "stmpe1600", STMPE1600 },
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{ "stmpe1601", STMPE1601 },
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{ "stmpe1801", STMPE1801 },
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{ "stmpe2401", STMPE2401 },
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@ -552,6 +552,59 @@ static struct stmpe_variant_info stmpe610 = {
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.get_altfunc = stmpe811_get_altfunc,
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};
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/*
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* STMPE1600
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* Compared to all others STMPE variant, LSB and MSB regs are located in this
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* order : LSB addr
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* MSB addr + 1
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* As there is only 2 * 8bits registers for GPMR/GPSR/IEGPIOPR, CSB index is MSB registers
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*/
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static const u8 stmpe1600_regs[] = {
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[STMPE_IDX_CHIP_ID] = STMPE1600_REG_CHIP_ID,
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[STMPE_IDX_SYS_CTRL] = STMPE1600_REG_SYS_CTRL,
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[STMPE_IDX_ICR_LSB] = STMPE1600_REG_SYS_CTRL,
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[STMPE_IDX_GPMR_LSB] = STMPE1600_REG_GPMR_LSB,
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[STMPE_IDX_GPMR_CSB] = STMPE1600_REG_GPMR_MSB,
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[STMPE_IDX_GPSR_LSB] = STMPE1600_REG_GPSR_LSB,
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[STMPE_IDX_GPSR_CSB] = STMPE1600_REG_GPSR_MSB,
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[STMPE_IDX_GPDR_LSB] = STMPE1600_REG_GPDR_LSB,
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[STMPE_IDX_GPDR_CSB] = STMPE1600_REG_GPDR_MSB,
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[STMPE_IDX_IEGPIOR_LSB] = STMPE1600_REG_IEGPIOR_LSB,
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[STMPE_IDX_IEGPIOR_CSB] = STMPE1600_REG_IEGPIOR_MSB,
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[STMPE_IDX_ISGPIOR_LSB] = STMPE1600_REG_ISGPIOR_LSB,
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};
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static struct stmpe_variant_block stmpe1600_blocks[] = {
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{
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.cell = &stmpe_gpio_cell,
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.irq = 0,
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.block = STMPE_BLOCK_GPIO,
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},
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};
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static int stmpe1600_enable(struct stmpe *stmpe, unsigned int blocks,
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bool enable)
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{
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if (blocks & STMPE_BLOCK_GPIO)
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return 0;
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else
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return -EINVAL;
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}
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static struct stmpe_variant_info stmpe1600 = {
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.name = "stmpe1600",
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.id_val = STMPE1600_ID,
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.id_mask = 0xffff,
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.num_gpios = 16,
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.af_bits = 0,
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.regs = stmpe1600_regs,
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.blocks = stmpe1600_blocks,
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.num_blocks = ARRAY_SIZE(stmpe1600_blocks),
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.num_irqs = STMPE1600_NR_INTERNAL_IRQS,
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.enable = stmpe1600_enable,
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};
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/*
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* STMPE1601
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*/
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@ -949,6 +1002,7 @@ static struct stmpe_variant_info *stmpe_variant_info[STMPE_NBR_PARTS] = {
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[STMPE610] = &stmpe610,
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[STMPE801] = &stmpe801,
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[STMPE811] = &stmpe811,
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[STMPE1600] = &stmpe1600,
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[STMPE1601] = &stmpe1601,
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[STMPE1801] = &stmpe1801,
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[STMPE2401] = &stmpe2401,
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@ -975,7 +1029,8 @@ static irqreturn_t stmpe_irq(int irq, void *data)
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int ret;
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int i;
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if (variant->id_val == STMPE801_ID) {
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if (variant->id_val == STMPE801_ID ||
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variant->id_val == STMPE1600_ID) {
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int base = irq_create_mapping(stmpe->domain, 0);
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handle_nested_irq(base);
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@ -1149,13 +1204,13 @@ static int stmpe_chip_init(struct stmpe *stmpe)
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return ret;
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if (stmpe->irq >= 0) {
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if (id == STMPE801_ID)
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if (id == STMPE801_ID || id == STMPE1600_ID)
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icr = STMPE_SYS_CTRL_INT_EN;
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else
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icr = STMPE_ICR_LSB_GIM;
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/* STMPE801 doesn't support Edge interrupts */
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if (id != STMPE801_ID) {
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/* STMPE801 and STMPE1600 don't support Edge interrupts */
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if (id != STMPE801_ID && id != STMPE1600_ID) {
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if (irq_trigger == IRQF_TRIGGER_FALLING ||
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irq_trigger == IRQF_TRIGGER_RISING)
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icr |= STMPE_ICR_LSB_EDGE;
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@ -1163,7 +1218,7 @@ static int stmpe_chip_init(struct stmpe *stmpe)
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if (irq_trigger == IRQF_TRIGGER_RISING ||
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irq_trigger == IRQF_TRIGGER_HIGH) {
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if (id == STMPE801_ID)
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if (id == STMPE801_ID || id == STMPE1600_ID)
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icr |= STMPE_SYS_CTRL_INT_HI;
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else
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icr |= STMPE_ICR_LSB_HIGH;
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@ -163,6 +163,27 @@ int stmpe_remove(struct stmpe *stmpe);
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#define STMPE811_SYS_CTRL2_GPIO_OFF (1 << 2)
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#define STMPE811_SYS_CTRL2_TS_OFF (1 << 3)
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/*
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* STMPE1600
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*/
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#define STMPE1600_ID 0x0016
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#define STMPE1600_NR_INTERNAL_IRQS 16
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#define STMPE1600_REG_CHIP_ID 0x00
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#define STMPE1600_REG_SYS_CTRL 0x03
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#define STMPE1600_REG_IEGPIOR_LSB 0x08
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#define STMPE1600_REG_IEGPIOR_MSB 0x09
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#define STMPE1600_REG_ISGPIOR_LSB 0x0A
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#define STMPE1600_REG_ISGPIOR_MSB 0x0B
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#define STMPE1600_REG_GPMR_LSB 0x10
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#define STMPE1600_REG_GPMR_MSB 0x11
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#define STMPE1600_REG_GPSR_LSB 0x12
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#define STMPE1600_REG_GPSR_MSB 0x13
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#define STMPE1600_REG_GPDR_LSB 0x14
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#define STMPE1600_REG_GPDR_MSB 0x15
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#define STMPE1600_REG_GPPIR_LSB 0x16
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#define STMPE1600_REG_GPPIR_MSB 0x17
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/*
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* STMPE1601
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*/
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@ -26,6 +26,7 @@ enum stmpe_partnum {
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STMPE610,
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STMPE801,
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STMPE811,
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STMPE1600,
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STMPE1601,
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STMPE1801,
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STMPE2401,
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