media/i2c/max9271.c

1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright (C) 2017-2020 Jacopo Mondi
4  * Copyright (C) 2017-2020 Kieran Bingham
5  * Copyright (C) 2017-2020 Laurent Pinchart
6  * Copyright (C) 2017-2020 Niklas Söderlund
11  * chip. This is not a self-contained driver, as MAX9271 is usually embedded in
16  * functions exported from this library driver to maximize code re-use.
28 	dev_dbg(&dev->client->dev, "%s(0x%02x)\n", __func__, reg);  in max9271_read()
30 	ret = i2c_smbus_read_byte_data(dev->client, reg);  in max9271_read()
32 		dev_dbg(&dev->client->dev,  in max9271_read()
43 	dev_dbg(&dev->client->dev, "%s(0x%02x, 0x%02x)\n", __func__, reg, val);  in max9271_write()
45 	ret = i2c_smbus_write_byte_data(dev->client, reg, val);  in max9271_write()
47 		dev_err(&dev->client->dev,  in max9271_write()
55  * max9271_pclk_detect() - Detect valid pixel clock from image sensor
57  * Wait up to 10ms for a valid pixel clock.
59  * Returns 0 for success, < 0 for pixel clock not properly detected
77 	dev_err(&dev->client->dev, "Unable to detect valid pixel clock\n");  in max9271_pclk_detect()
79 	return -EIO;  in max9271_pclk_detect()
105 	 * Short delays here appear to show bit-errors in the writes following.  in max9271_set_serial_link()
157 	 * - Double input mode, high data rate, 24-bit mode  in max9271_configure_gmsl_link()
158 	 * - Latch input data on PCLKIN rising edge  in max9271_configure_gmsl_link()
159 	 * - Enable HS/VS encoding  in max9271_configure_gmsl_link()
160 	 * - 1-bit parity error detection  in max9271_configure_gmsl_link()
169 	 * Adjust spread spectrum to +4% and auto-detect pixel clock  in max9271_configure_gmsl_link()
191 		dev_err(&dev->client->dev, "Failed to set gpio (%d)\n", ret);  in max9271_set_gpios()
212 		dev_err(&dev->client->dev, "Failed to clear gpio (%d)\n", ret);  in max9271_clear_gpios()
234 		dev_err(&dev->client->dev, "Failed to enable gpio (%d)\n", ret);  in max9271_enable_gpios()
256 		dev_err(&dev->client->dev, "Failed to disable gpio (%d)\n", ret);  in max9271_disable_gpios()
272 		dev_err(&dev->client->dev, "MAX9271 ID read failed (%d)\n",  in max9271_verify_id()
278 		dev_err(&dev->client->dev, "MAX9271 ID mismatch (0x%02x)\n",  in max9271_verify_id()
280 		return -ENXIO;  in max9271_verify_id()
293 		dev_err(&dev->client->dev,  in max9271_set_address()
309 		dev_err(&dev->client->dev,  in max9271_set_deserializer_address()
325 		dev_err(&dev->client->dev,  in max9271_set_translation()
333 		dev_err(&dev->client->dev,  in max9271_set_translation()