1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/clk-provider.h>
20  * 79234640-9e10-4fea-a5c1-b5aa8b19756f
31  * 822ace8f-2814-4174-a56b-5f029fe079ee
46  * specific deviations from the documented behaviour of GPIOs.
54 	{ "powerdown", "reset" },
59 	/* Lenovo Miix 510-12ISK - OV2680, Front */
61 	/* Lenovo Miix 510-12ISK - OV5648, Rear */
63 	/* Surface Go 1&2 - OV5693, Front */
73 	obj = acpi_evaluate_dsm_typed(int3472->sensor->handle,  in skl_int3472_get_sensor_module_config()
78 		dev_err(int3472->dev,  in skl_int3472_get_sensor_module_config()
80 		return ERR_PTR(-ENODEV);  in skl_int3472_get_sensor_module_config()
83 	if (obj->string.type != ACPI_TYPE_STRING) {  in skl_int3472_get_sensor_module_config()
84 		dev_err(int3472->dev,  in skl_int3472_get_sensor_module_config()
85 			"Sensor _DSM returned a non-string value\n");  in skl_int3472_get_sensor_module_config()
88 		return ERR_PTR(-EINVAL);  in skl_int3472_get_sensor_module_config()
93 			    obj->string.pointer))  in skl_int3472_get_sensor_module_config()
100 		return ERR_PTR(-EINVAL);  in skl_int3472_get_sensor_module_config()
110 	char *path = agpio->resource_source.string_ptr;  in skl_int3472_map_gpio_to_sensor()
116 	if (int3472->n_sensor_gpios >= INT3472_MAX_SENSOR_GPIOS) {  in skl_int3472_map_gpio_to_sensor()
117 		dev_warn(int3472->dev, "Too many GPIOs mapped\n");  in skl_int3472_map_gpio_to_sensor()
118 		return -EINVAL;  in skl_int3472_map_gpio_to_sensor()
121 	sensor_config = int3472->sensor_config;  in skl_int3472_map_gpio_to_sensor()
122 	if (!IS_ERR(sensor_config) && sensor_config->function_maps) {  in skl_int3472_map_gpio_to_sensor()
125 		for (remap = sensor_config->function_maps; remap->documented; remap++) {  in skl_int3472_map_gpio_to_sensor()
126 			if (!strcmp(func, remap->documented)) {  in skl_int3472_map_gpio_to_sensor()
127 				func = remap->actual;  in skl_int3472_map_gpio_to_sensor()
139 		return -EINVAL;  in skl_int3472_map_gpio_to_sensor()
143 		return -ENODEV;  in skl_int3472_map_gpio_to_sensor()
145 	table_entry = &int3472->gpios.table[int3472->n_sensor_gpios];  in skl_int3472_map_gpio_to_sensor()
146 	table_entry->key = acpi_dev_name(adev);  in skl_int3472_map_gpio_to_sensor()
147 	table_entry->chip_hwnum = agpio->pin_table[0];  in skl_int3472_map_gpio_to_sensor()
148 	table_entry->con_id = func;  in skl_int3472_map_gpio_to_sensor()
149 	table_entry->idx = 0;  in skl_int3472_map_gpio_to_sensor()
150 	table_entry->flags = polarity;  in skl_int3472_map_gpio_to_sensor()
152 	int3472->n_sensor_gpios++;  in skl_int3472_map_gpio_to_sensor()
160 	char *path = agpio->resource_source.string_ptr;  in skl_int3472_map_gpio_to_clk()
161 	u16 pin = agpio->pin_table[0];  in skl_int3472_map_gpio_to_clk()
166 		gpio = acpi_get_and_request_gpiod(path, pin, "int3472,clk-enable");  in skl_int3472_map_gpio_to_clk()
170 		int3472->clock.ena_gpio = gpio;  in skl_int3472_map_gpio_to_clk()
173 		gpio = acpi_get_and_request_gpiod(path, pin, "int3472,privacy-led");  in skl_int3472_map_gpio_to_clk()
177 		int3472->clock.led_gpio = gpio;  in skl_int3472_map_gpio_to_clk()
180 		dev_err(int3472->dev, "Invalid GPIO type 0x%02x for clock\n", type);  in skl_int3472_map_gpio_to_clk()
207  * by the mapping sub-functions.
209  * GPIOs will either be mapped directly to the sensor device or else used
213  * * 1		- To continue the loop
214  * * 0		- When all resources found are handled properly.
215  * * -EINVAL	- If the resource is not a GPIO IO resource
216  * * -ENODEV	- If the resource has no corresponding _DSM entry
217  * * -Other	- Errors propagated from one of the sub-functions.
233 	 * ngpios + 2 because the index of this _DSM function is 1-based and  in skl_int3472_handle_gpio_resources()
236 	obj = acpi_evaluate_dsm_typed(int3472->adev->handle,  in skl_int3472_handle_gpio_resources()
238 				      int3472->ngpios + 2,  in skl_int3472_handle_gpio_resources()
242 		dev_warn(int3472->dev, "No _DSM entry for GPIO pin %u\n",  in skl_int3472_handle_gpio_resources()
243 			 agpio->pin_table[0]);  in skl_int3472_handle_gpio_resources()
247 	type = obj->integer.value & 0xff;  in skl_int3472_handle_gpio_resources()
258 		ret = skl_int3472_map_gpio_to_sensor(int3472, agpio, "powerdown",  in skl_int3472_handle_gpio_resources()
261 			err_msg = "Failed to map powerdown pin to sensor\n";  in skl_int3472_handle_gpio_resources()
278 		dev_warn(int3472->dev,  in skl_int3472_handle_gpio_resources()
285 	int3472->ngpios++;  in skl_int3472_handle_gpio_resources()
289 		return dev_err_probe(int3472->dev, ret, err_msg);  in skl_int3472_handle_gpio_resources()
303 	int3472->sensor_config = skl_int3472_get_sensor_module_config(int3472);  in skl_int3472_parse_crs()
305 	ret = acpi_dev_get_resources(int3472->adev, &resource_list,  in skl_int3472_parse_crs()
318 	if (int3472->clock.ena_gpio) {  in skl_int3472_parse_crs()
323 		if (int3472->clock.led_gpio)  in skl_int3472_parse_crs()
324 			dev_warn(int3472->dev,  in skl_int3472_parse_crs()
328 	int3472->gpios.dev_id = int3472->sensor_name;  in skl_int3472_parse_crs()
329 	gpiod_add_lookup_table(&int3472->gpios);  in skl_int3472_parse_crs()
338 	gpiod_remove_lookup_table(&int3472->gpios);  in skl_int3472_discrete_remove()
340 	if (int3472->clock.cl)  in skl_int3472_discrete_remove()
343 	gpiod_put(int3472->clock.ena_gpio);  in skl_int3472_discrete_remove()
344 	gpiod_put(int3472->clock.led_gpio);  in skl_int3472_discrete_remove()
353 	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);  in skl_int3472_discrete_probe()
360 		dev_err(&pdev->dev, "Couldn't fill CLDB structure\n");  in skl_int3472_discrete_probe()
365 		dev_err(&pdev->dev, "Unsupported control logic type %u\n",  in skl_int3472_discrete_probe()
367 		return -EINVAL;  in skl_int3472_discrete_probe()
370 	/* Max num GPIOs we've seen plus a terminator */  in skl_int3472_discrete_probe()
371 	int3472 = devm_kzalloc(&pdev->dev, struct_size(int3472, gpios.table,  in skl_int3472_discrete_probe()
374 		return -ENOMEM;  in skl_int3472_discrete_probe()
376 	int3472->adev = adev;  in skl_int3472_discrete_probe()
377 	int3472->dev = &pdev->dev;  in skl_int3472_discrete_probe()
380 	ret = skl_int3472_get_sensor_adev_and_name(&pdev->dev, &int3472->sensor,  in skl_int3472_discrete_probe()
381 						   &int3472->sensor_name);  in skl_int3472_discrete_probe()
389 	INIT_LIST_HEAD(&int3472->gpios.list);  in skl_int3472_discrete_probe()
409 		.name = "int3472-discrete",