Lines Matching defs:stmpe
3 * ST Microelectronics MFD: stmpe's driver
24 #include "stmpe.h"
31 * @autosleep: bool to enable/disable stmpe autosleep
47 static int __stmpe_enable(struct stmpe *stmpe, unsigned int blocks)
49 return stmpe->variant->enable(stmpe, blocks, true);
52 static int __stmpe_disable(struct stmpe *stmpe, unsigned int blocks)
54 return stmpe->variant->enable(stmpe, blocks, false);
57 static int __stmpe_reg_read(struct stmpe *stmpe, u8 reg)
61 ret = stmpe->ci->read_byte(stmpe, reg);
63 dev_err(stmpe->dev, "failed to read reg %#x: %d\n", reg, ret);
65 dev_vdbg(stmpe->dev, "rd: reg %#x => data %#x\n", reg, ret);
70 static int __stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 val)
74 dev_vdbg(stmpe->dev, "wr: reg %#x <= %#x\n", reg, val);
76 ret = stmpe->ci->write_byte(stmpe, reg, val);
78 dev_err(stmpe->dev, "failed to write reg %#x: %d\n", reg, ret);
83 static int __stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val)
87 ret = __stmpe_reg_read(stmpe, reg);
94 return __stmpe_reg_write(stmpe, reg, ret);
97 static int __stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length,
102 ret = stmpe->ci->read_block(stmpe, reg, length, values);
104 dev_err(stmpe->dev, "failed to read regs %#x: %d\n", reg, ret);
106 dev_vdbg(stmpe->dev, "rd: reg %#x (%d) => ret %#x\n", reg, length, ret);
107 stmpe_dump_bytes("stmpe rd: ", values, length);
112 static int __stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
117 dev_vdbg(stmpe->dev, "wr: regs %#x (%d)\n", reg, length);
118 stmpe_dump_bytes("stmpe wr: ", values, length);
120 ret = stmpe->ci->write_block(stmpe, reg, length, values);
122 dev_err(stmpe->dev, "failed to write regs %#x: %d\n", reg, ret);
129 * @stmpe: Device to work on
132 int stmpe_enable(struct stmpe *stmpe, unsigned int blocks)
136 mutex_lock(&stmpe->lock);
137 ret = __stmpe_enable(stmpe, blocks);
138 mutex_unlock(&stmpe->lock);
146 * @stmpe: Device to work on
149 int stmpe_disable(struct stmpe *stmpe, unsigned int blocks)
153 mutex_lock(&stmpe->lock);
154 ret = __stmpe_disable(stmpe, blocks);
155 mutex_unlock(&stmpe->lock);
163 * @stmpe: Device to read from
166 int stmpe_reg_read(struct stmpe *stmpe, u8 reg)
170 mutex_lock(&stmpe->lock);
171 ret = __stmpe_reg_read(stmpe, reg);
172 mutex_unlock(&stmpe->lock);
180 * @stmpe: Device to write to
184 int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 val)
188 mutex_lock(&stmpe->lock);
189 ret = __stmpe_reg_write(stmpe, reg, val);
190 mutex_unlock(&stmpe->lock);
198 * @stmpe: Device to write to
203 int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val)
207 mutex_lock(&stmpe->lock);
208 ret = __stmpe_set_bits(stmpe, reg, mask, val);
209 mutex_unlock(&stmpe->lock);
217 * @stmpe: Device to read from
222 int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values)
226 mutex_lock(&stmpe->lock);
227 ret = __stmpe_block_read(stmpe, reg, length, values);
228 mutex_unlock(&stmpe->lock);
236 * @stmpe: Device to write to
241 int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
246 mutex_lock(&stmpe->lock);
247 ret = __stmpe_block_write(stmpe, reg, length, values);
248 mutex_unlock(&stmpe->lock);
256 * @stmpe: Device to configure
266 int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins, enum stmpe_block block)
268 struct stmpe_variant_info *variant = stmpe->variant;
269 u8 regaddr = stmpe->regs[STMPE_IDX_GPAFR_U_MSB];
271 int numregs = DIV_ROUND_UP(stmpe->num_gpios * af_bits, 8);
280 mutex_lock(&stmpe->lock);
282 ret = __stmpe_enable(stmpe, STMPE_BLOCK_GPIO);
286 ret = __stmpe_block_read(stmpe, regaddr, numregs, regs);
290 af = variant->get_altfunc(stmpe, block);
303 ret = __stmpe_block_write(stmpe, regaddr, numregs, regs);
306 mutex_unlock(&stmpe->lock);
323 .name = "stmpe-gpio",
324 .of_compatible = "st,stmpe-gpio",
330 .name = "stmpe-gpio",
331 .of_compatible = "st,stmpe-gpio",
351 .name = "stmpe-keypad",
352 .of_compatible = "st,stmpe-keypad",
376 .name = "stmpe-pwm",
377 .of_compatible = "st,stmpe-pwm",
412 static int stmpe801_enable(struct stmpe *stmpe, unsigned int blocks,
460 .name = "stmpe-ts",
461 .of_compatible = "st,stmpe-ts",
482 .name = "stmpe-adc",
483 .of_compatible = "st,stmpe-adc",
529 static int stmpe811_enable(struct stmpe *stmpe, unsigned int blocks,
543 return __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL2], mask,
547 int stmpe811_adc_common_init(struct stmpe *stmpe)
552 adc_ctrl1 = STMPE_SAMPLE_TIME(stmpe->sample_time) |
553 STMPE_MOD_12B(stmpe->mod_12b) |
554 STMPE_REF_SEL(stmpe->ref_sel);
558 ret = stmpe_set_bits(stmpe, STMPE811_REG_ADC_CTRL1,
561 dev_err(stmpe->dev, "Could not setup ADC\n");
565 ret = stmpe_set_bits(stmpe, STMPE811_REG_ADC_CTRL2,
566 STMPE_ADC_FREQ(0xff), STMPE_ADC_FREQ(stmpe->adc_freq));
568 dev_err(stmpe->dev, "Could not setup ADC\n");
576 static int stmpe811_get_altfunc(struct stmpe *stmpe, enum stmpe_block block)
644 static int stmpe1600_enable(struct stmpe *stmpe, unsigned int blocks,
738 static int stmpe_autosleep(struct stmpe *stmpe, int autosleep_timeout)
742 if (!stmpe->variant->enable_autosleep)
745 mutex_lock(&stmpe->lock);
746 ret = stmpe->variant->enable_autosleep(stmpe, autosleep_timeout);
747 mutex_unlock(&stmpe->lock);
753 * Both stmpe 1601/2403 support same layout for autosleep
755 static int stmpe1601_autosleep(struct stmpe *stmpe,
763 dev_err(stmpe->dev, "invalid timeout\n");
767 ret = __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL2],
773 return __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL2],
778 static int stmpe1601_enable(struct stmpe *stmpe, unsigned int blocks,
798 return __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL], mask,
802 static int stmpe1601_get_altfunc(struct stmpe *stmpe, enum stmpe_block block)
879 static int stmpe1801_enable(struct stmpe *stmpe, unsigned int blocks,
889 return __stmpe_set_bits(stmpe, STMPE1801_REG_INT_EN_MASK_LOW, mask,
893 static int stmpe_reset(struct stmpe *stmpe)
895 u16 id_val = stmpe->variant->id_val;
907 ret = __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL],
916 ret = __stmpe_reg_read(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL]);
1001 static int stmpe24xx_enable(struct stmpe *stmpe, unsigned int blocks,
1012 return __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL], mask,
1016 static int stmpe24xx_get_altfunc(struct stmpe *stmpe, enum stmpe_block block)
1084 struct stmpe *stmpe = data;
1085 struct stmpe_variant_info *variant = stmpe->variant;
1094 int base = irq_find_mapping(stmpe->domain, 0);
1101 israddr = stmpe->regs[STMPE_IDX_ISR_LSB];
1103 israddr = stmpe->regs[STMPE_IDX_ISR_MSB];
1105 ret = stmpe_block_read(stmpe, israddr, num, isr);
1114 status &= stmpe->ier[bank];
1122 int nestedirq = irq_find_mapping(stmpe->domain, line);
1128 stmpe_reg_write(stmpe, israddr + i, clear);
1136 struct stmpe *stmpe = irq_data_get_irq_chip_data(data);
1138 mutex_lock(&stmpe->irq_lock);
1143 struct stmpe *stmpe = irq_data_get_irq_chip_data(data);
1144 struct stmpe_variant_info *variant = stmpe->variant;
1149 u8 new = stmpe->ier[i];
1150 u8 old = stmpe->oldier[i];
1155 stmpe->oldier[i] = new;
1156 stmpe_reg_write(stmpe, stmpe->regs[STMPE_IDX_IER_LSB + i], new);
1159 mutex_unlock(&stmpe->irq_lock);
1164 struct stmpe *stmpe = irq_data_get_irq_chip_data(data);
1169 stmpe->ier[regoffset] &= ~mask;
1174 struct stmpe *stmpe = irq_data_get_irq_chip_data(data);
1179 stmpe->ier[regoffset] |= mask;
1183 .name = "stmpe",
1193 struct stmpe *stmpe = d->host_data;
1196 if (stmpe->variant->id_val != STMPE801_ID)
1199 irq_set_chip_data(virq, stmpe);
1219 static int stmpe_irq_init(struct stmpe *stmpe, struct device_node *np)
1222 int num_irqs = stmpe->variant->num_irqs;
1224 stmpe->domain = irq_domain_add_simple(np, num_irqs, base,
1225 &stmpe_irq_ops, stmpe);
1226 if (!stmpe->domain) {
1227 dev_err(stmpe->dev, "Failed to create irqdomain\n");
1234 static int stmpe_chip_init(struct stmpe *stmpe)
1236 unsigned int irq_trigger = stmpe->pdata->irq_trigger;
1237 int autosleep_timeout = stmpe->pdata->autosleep_timeout;
1238 struct stmpe_variant_info *variant = stmpe->variant;
1244 ret = stmpe_block_read(stmpe, stmpe->regs[STMPE_IDX_CHIP_ID],
1251 dev_err(stmpe->dev, "unknown chip id: %#x\n", id);
1255 dev_info(stmpe->dev, "%s detected, chip id: %#x\n", variant->name, id);
1258 ret = stmpe_disable(stmpe, ~0);
1262 ret = stmpe_reset(stmpe);
1266 if (stmpe->irq >= 0) {
1288 if (stmpe->pdata->autosleep) {
1289 ret = stmpe_autosleep(stmpe, autosleep_timeout);
1294 return stmpe_reg_write(stmpe, stmpe->regs[STMPE_IDX_ICR_LSB], icr);
1297 static int stmpe_add_device(struct stmpe *stmpe, const struct mfd_cell *cell)
1299 return mfd_add_devices(stmpe->dev, stmpe->pdata->id, cell, 1,
1300 NULL, 0, stmpe->domain);
1303 static int stmpe_devices_init(struct stmpe *stmpe)
1305 struct stmpe_variant_info *variant = stmpe->variant;
1306 unsigned int platform_blocks = stmpe->pdata->blocks;
1326 ret = stmpe_add_device(stmpe, block->cell);
1332 dev_warn(stmpe->dev,
1344 pdata->id = of_alias_get_id(np, "stmpe-i2c");
1382 struct stmpe *stmpe;
1395 stmpe = devm_kzalloc(ci->dev, sizeof(struct stmpe), GFP_KERNEL);
1396 if (!stmpe)
1399 mutex_init(&stmpe->irq_lock);
1400 mutex_init(&stmpe->lock);
1403 stmpe->sample_time = val;
1405 stmpe->mod_12b = val;
1407 stmpe->ref_sel = val;
1409 stmpe->adc_freq = val;
1411 stmpe->dev = ci->dev;
1412 stmpe->client = ci->client;
1413 stmpe->pdata = pdata;
1414 stmpe->ci = ci;
1415 stmpe->partnum = partnum;
1416 stmpe->variant = stmpe_variant_info[partnum];
1417 stmpe->regs = stmpe->variant->regs;
1418 stmpe->num_gpios = stmpe->variant->num_gpios;
1419 stmpe->vcc = devm_regulator_get_optional(ci->dev, "vcc");
1420 if (!IS_ERR(stmpe->vcc)) {
1421 ret = regulator_enable(stmpe->vcc);
1425 stmpe->vio = devm_regulator_get_optional(ci->dev, "vio");
1426 if (!IS_ERR(stmpe->vio)) {
1427 ret = regulator_enable(stmpe->vio);
1431 dev_set_drvdata(stmpe->dev, stmpe);
1434 ci->init(stmpe);
1438 GPIOF_DIR_IN, "stmpe");
1440 dev_err(stmpe->dev, "failed to request IRQ GPIO: %d\n",
1445 stmpe->irq = gpio_to_irq(pdata->irq_gpio);
1447 stmpe->irq = ci->irq;
1450 if (stmpe->irq < 0) {
1452 dev_info(stmpe->dev,
1454 stmpe->variant->name);
1455 if (!stmpe_noirq_variant_info[stmpe->partnum]) {
1456 dev_err(stmpe->dev,
1458 stmpe->variant->name);
1461 stmpe->variant = stmpe_noirq_variant_info[stmpe->partnum];
1463 pdata->irq_trigger = irq_get_trigger_type(stmpe->irq);
1466 ret = stmpe_chip_init(stmpe);
1470 if (stmpe->irq >= 0) {
1471 ret = stmpe_irq_init(stmpe, np);
1475 ret = devm_request_threaded_irq(ci->dev, stmpe->irq, NULL,
1477 "stmpe", stmpe);
1479 dev_err(stmpe->dev, "failed to request IRQ: %d\n",
1485 ret = stmpe_devices_init(stmpe);
1489 dev_err(stmpe->dev, "failed to add children\n");
1490 mfd_remove_devices(stmpe->dev);
1495 int stmpe_remove(struct stmpe *stmpe)
1497 if (!IS_ERR(stmpe->vio) && regulator_is_enabled(stmpe->vio))
1498 regulator_disable(stmpe->vio);
1499 if (!IS_ERR(stmpe->vcc) && regulator_is_enabled(stmpe->vcc))
1500 regulator_disable(stmpe->vcc);
1502 __stmpe_disable(stmpe, STMPE_BLOCK_ADC);
1504 mfd_remove_devices(stmpe->dev);
1512 struct stmpe *stmpe = dev_get_drvdata(dev);
1514 if (stmpe->irq >= 0 && device_may_wakeup(dev))
1515 enable_irq_wake(stmpe->irq);
1522 struct stmpe *stmpe = dev_get_drvdata(dev);
1524 if (stmpe->irq >= 0 && device_may_wakeup(dev))
1525 disable_irq_wake(stmpe->irq);