3  * HWMON Driver for Dialog DA9052
11 #include <linux/hwmon.h>
12 #include <linux/hwmon-sysfs.h>
66 static inline int input_tsireg_to_mv(struct da9052_hwmon *hwmon, int value)  in input_tsireg_to_mv()  argument
68 	return DIV_ROUND_CLOSEST(value * hwmon->tsiref_mv, 1023);  in input_tsireg_to_mv()
87 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_vddout_show()  local
90 	mutex_lock(&hwmon->hwmon_lock);  in da9052_vddout_show()
92 	ret = da9052_enable_vddout_channel(hwmon->da9052);  in da9052_vddout_show()
96 	vdd = da9052_reg_read(hwmon->da9052, DA9052_VDD_RES_REG);  in da9052_vddout_show()
102 	ret = da9052_disable_vddout_channel(hwmon->da9052);  in da9052_vddout_show()
106 	mutex_unlock(&hwmon->hwmon_lock);  in da9052_vddout_show()
110 	da9052_disable_vddout_channel(hwmon->da9052);  in da9052_vddout_show()
112 	mutex_unlock(&hwmon->hwmon_lock);  in da9052_vddout_show()
119 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_ich_show()  local
122 	ret = da9052_reg_read(hwmon->da9052, DA9052_ICHG_AV_REG);  in da9052_ich_show()
133 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_tbat_show()  local
135 	return sprintf(buf, "%d\n", da9052_adc_read_temp(hwmon->da9052));  in da9052_tbat_show()
141 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_vbat_show()  local
144 	ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBAT);  in da9052_vbat_show()
155 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_misc_channel_show()  local
159 	ret = da9052_adc_manual_read(hwmon->da9052, channel);  in da9052_misc_channel_show()
166 static int da9052_request_tsi_read(struct da9052_hwmon *hwmon, int channel)  in da9052_request_tsi_read()  argument
185 	return da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_B_REG, val);  in da9052_request_tsi_read()
188 static int da9052_get_tsi_result(struct da9052_hwmon *hwmon, int channel)  in da9052_get_tsi_result()  argument
194 	err = da9052_group_read(hwmon->da9052, DA9052_TSI_X_MSB_REG,  in da9052_get_tsi_result()
222 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in __da9052_read_tsi()  local
225 	reinit_completion(&hwmon->tsidone);  in __da9052_read_tsi()
227 	ret = da9052_request_tsi_read(hwmon, channel);  in __da9052_read_tsi()
232 	if (!wait_for_completion_timeout(&hwmon->tsidone,  in __da9052_read_tsi()
236 	return da9052_get_tsi_result(hwmon, channel);  in __da9052_read_tsi()
242 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_tsi_show()  local
246 	mutex_lock(&hwmon->da9052->auxadc_lock);  in da9052_tsi_show()
248 	mutex_unlock(&hwmon->da9052->auxadc_lock);  in da9052_tsi_show()
253 		return sprintf(buf, "%d\n", input_tsireg_to_mv(hwmon, ret));  in da9052_tsi_show()
259 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_tjunc_show()  local
263 	tjunc = da9052_reg_read(hwmon->da9052, DA9052_TJUNC_RES_REG);  in da9052_tjunc_show()
267 	toffset = da9052_reg_read(hwmon->da9052, DA9052_T_OFFSET_REG);  in da9052_tjunc_show()
281 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_vbbat_show()  local
284 	ret = da9052_adc_manual_read(hwmon->da9052, DA9052_ADC_VBBAT);  in da9052_vbbat_show()
302 	struct da9052_hwmon *hwmon = dev_get_drvdata(dev);  in da9052_channel_is_visible()  local
307 	if (!hwmon->tsi_as_adc) {  in da9052_channel_is_visible()
388 	struct da9052_hwmon *hwmon = data;  in da9052_tsi_datardy_irq()  local
390 	complete(&hwmon->tsidone);  in da9052_tsi_datardy_irq()
397 	struct da9052_hwmon *hwmon;  in da9052_hwmon_probe()  local
401 	hwmon = devm_kzalloc(dev, sizeof(struct da9052_hwmon), GFP_KERNEL);  in da9052_hwmon_probe()
402 	if (!hwmon)  in da9052_hwmon_probe()
405 	platform_set_drvdata(pdev, hwmon);  in da9052_hwmon_probe()
407 	mutex_init(&hwmon->hwmon_lock);  in da9052_hwmon_probe()
408 	hwmon->da9052 = dev_get_drvdata(pdev->dev.parent);  in da9052_hwmon_probe()
410 	init_completion(&hwmon->tsidone);  in da9052_hwmon_probe()
412 	hwmon->tsi_as_adc =  in da9052_hwmon_probe()
415 	if (hwmon->tsi_as_adc) {  in da9052_hwmon_probe()
422 		/* convert from microvolt (DT) to millivolt (hwmon) */  in da9052_hwmon_probe()
423 		hwmon->tsiref_mv = tsiref_uv / 1000;  in da9052_hwmon_probe()
426 		if (hwmon->tsiref_mv < 1800 || hwmon->tsiref_mv > 2600) {  in da9052_hwmon_probe()
427 			dev_err(hwmon->da9052->dev, "invalid TSIREF voltage: %d",  in da9052_hwmon_probe()
428 				hwmon->tsiref_mv);  in da9052_hwmon_probe()
433 		da9052_reg_write(hwmon->da9052, DA9052_TSI_CONT_A_REG, 0x00);  in da9052_hwmon_probe()
436 		da9052_reg_update(hwmon->da9052, DA9052_ADC_CONT_REG,  in da9052_hwmon_probe()
440 		err = da9052_request_irq(hwmon->da9052, DA9052_IRQ_TSIREADY,  in da9052_hwmon_probe()
442 					 hwmon);  in da9052_hwmon_probe()
451 							   hwmon,  in da9052_hwmon_probe()
460 	if (hwmon->tsi_as_adc)  in da9052_hwmon_probe()
461 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);  in da9052_hwmon_probe()
468 	struct da9052_hwmon *hwmon = platform_get_drvdata(pdev);  in da9052_hwmon_remove()  local
470 	if (hwmon->tsi_as_adc)  in da9052_hwmon_remove()
471 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);  in da9052_hwmon_remove()
478 		.name = "da9052-hwmon",
485 MODULE_DESCRIPTION("DA9052 HWMON driver");
487 MODULE_ALIAS("platform:da9052-hwmon");