projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5510e62a | 1 | Kernel driver MCP3021 |
| b04f2f7d | 2 | ===================== |
| 5510e62a XX |
3 | |
| 4 | Supported chips: | |
| b04f2f7d | 5 | |
| 5510e62a | 6 | * Microchip Technology MCP3021 |
| b04f2f7d | 7 | |
| 5510e62a | 8 | Prefix: 'mcp3021' |
| b04f2f7d | 9 | |
| 5510e62a | 10 | Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf |
| b04f2f7d | 11 | |
| 592758b1 | 12 | * Microchip Technology MCP3221 |
| b04f2f7d | 13 | |
| 592758b1 | 14 | Prefix: 'mcp3221' |
| b04f2f7d | 15 | |
| 592758b1 | 16 | Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21732c.pdf |
| 5510e62a | 17 | |
| b04f2f7d MCC |
18 | |
| 19 | ||
| 592758b1 | 20 | Authors: |
| b04f2f7d MCC |
21 | |
| 22 | - Mingkai Hu | |
| 23 | - Sven Schuchmann <schuchmann@schleissheimer.de> | |
| 5510e62a XX |
24 | |
| 25 | Description | |
| 26 | ----------- | |
| 27 | ||
| 592758b1 SS |
28 | This driver implements support for the Microchip Technology MCP3021 and |
| 29 | MCP3221 chip. | |
| 5510e62a XX |
30 | |
| 31 | The Microchip Technology Inc. MCP3021 is a successive approximation A/D | |
| 592758b1 SS |
32 | converter (ADC) with 10-bit resolution. The MCP3221 has 12-bit resolution. |
| 33 | ||
| 34 | These devices provide one single-ended input with very low power consumption. | |
| 35 | Communication to the MCP3021/MCP3221 is performed using a 2-wire I2C | |
| 36 | compatible interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are | |
| 37 | available. The default I2C device address is 0x4d (contact the Microchip | |
| 38 | factory for additional address options). |