1 // SPDX-License-Identifier: GPL-2.0+
10  * Fan control is provided via pwm interface in the range [0-255].
11  * Old AMD boards use [0-100] as range in the EC, the written value is
13  * AOKZOE are not scaled but have the same EC layout. Newer models
14  * like the 2 and X1 are [0-184] and are scaled to 0-255. OrangePi
15  * are [1-244] and scaled to 0-255.
66 /* Fan reading and PWM */
69 #define OXP_SENSOR_PWM_ENABLE_REG      0x4A /* PWM enable is 1 register long */
70 #define OXP_SENSOR_PWM_REG             0x4B /* PWM reading is 1 register long */
74 /* OrangePi fan reading and PWM */
76 #define ORANGEPI_SENSOR_PWM_ENABLE_REG 0x40 /* PWM enable is 1 register long */
77 #define ORANGEPI_SENSOR_PWM_REG        0x38 /* PWM reading is 1 register long */
80  * Different boards have different values and EC registers
131 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "AB05-Mendocino"),
166 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "NEO-01"),
172 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
179 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
186 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
193 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
200 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
207 			DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
215 /* Helper functions to handle EC read/write */
223 		return -EBUSY;  in read_from_ec()
235 		return -EBUSY;  in read_from_ec()
245 		return -EBUSY;  in write_to_ec()
250 		return -EBUSY;  in write_to_ec()
278 		return -EINVAL;  in tt_toggle_enable()
305 		return -EINVAL;  in tt_toggle_disable()
321 		return attr->mode;  in tt_toggle_is_visible()
371 		return -EINVAL;  in tt_toggle_show()
383 /* PWM enable/disable functions */
405 		return -EINVAL;  in oxp_pwm_enable()
431 		return -EINVAL;  in oxp_pwm_disable()
494 				/* scale from range [1-244] */  in oxp_platform_read()
495 				*val = ((*val - 1) * 254 / 243) + 1;  in oxp_platform_read()
502 				/* scale from range [0-184] */  in oxp_platform_read()
518 				/* scale from range [0-100] */  in oxp_platform_read()
562 	return -EOPNOTSUPP;  in oxp_platform_read()
576 			return -EINVAL;  in oxp_platform_write()
579 				return -EINVAL;  in oxp_platform_write()
582 				/* scale to range [1-244] */  in oxp_platform_write()
583 				val = ((val - 1) * 243 / 254) + 1;  in oxp_platform_write()
587 				/* scale to range [0-184] */  in oxp_platform_write()
600 				/* scale to range [0-100] */  in oxp_platform_write()
618 	return -EOPNOTSUPP;  in oxp_platform_write()
621 /* Known sensors in the OXP EC controllers */
625 	HWMON_CHANNEL_INFO(pwm,
659 	struct device *dev = &pdev->dev;  in oxp_platform_probe()
670 		.name = "oxp-platform",
684 		return -ENODEV;  in oxp_platform_init()
686 	board = (enum oxp_board)(unsigned long)dmi_entry->driver_data;  in oxp_platform_init()
691 	 * to tell them apart is the CPU. Old Intel boards have an unsupported EC.  in oxp_platform_init()
694 		return -ENODEV;  in oxp_platform_init()
715 MODULE_DESCRIPTION("Platform driver that handles EC sensors of OneXPlayer devices");