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Diffstat (limited to 'Documentation/input/cma3000_d0x.txt')
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1 files changed, 0 insertions, 115 deletions
diff --git a/Documentation/input/cma3000_d0x.txt b/Documentation/input/cma3000_d0x.txt deleted file mode 100644 index 29d088db4afd..000000000000 --- a/Documentation/input/cma3000_d0x.txt +++ /dev/null @@ -1,115 +0,0 @@ -Kernel driver for CMA3000-D0x -============================ - -Supported chips: -* VTI CMA3000-D0x -Datasheet: - CMA3000-D0X Product Family Specification 8281000A.02.pdf - <http://www.vti.fi/en/> - -Author: Hemanth V <hemanthv@ti.com> - - -Description ------------ -CMA3000 Tri-axis accelerometer supports Motion detect, Measurement and -Free fall modes. - -Motion Detect Mode: Its the low power mode where interrupts are generated only -when motion exceeds the defined thresholds. - -Measurement Mode: This mode is used to read the acceleration data on X,Y,Z -axis and supports 400, 100, 40 Hz sample frequency. - -Free fall Mode: This mode is intended to save system resources. - -Threshold values: Chip supports defining threshold values for above modes -which includes time and g value. Refer product specifications for more details. - -CMA3000 chip supports mutually exclusive I2C and SPI interfaces for -communication, currently the driver supports I2C based communication only. -Initial configuration for bus mode is set in non volatile memory and can later -be modified through bus interface command. - -Driver reports acceleration data through input subsystem. It generates ABS_MISC -event with value 1 when free fall is detected. - -Platform data need to be configured for initial default values. - -Platform Data -------------- -fuzz_x: Noise on X Axis - -fuzz_y: Noise on Y Axis - -fuzz_z: Noise on Z Axis - -g_range: G range in milli g i.e 2000 or 8000 - -mode: Default Operating mode - -mdthr: Motion detect g range threshold value - -mdfftmr: Motion detect and free fall time threshold value - -ffthr: Free fall g range threshold value - -Input Interface --------------- -Input driver version is 1.0.0 -Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0 -Input device name: "cma3000-accelerometer" -Supported events: - Event type 0 (Sync) - Event type 3 (Absolute) - Event code 0 (X) - Value 47 - Min -8000 - Max 8000 - Fuzz 200 - Event code 1 (Y) - Value -28 - Min -8000 - Max 8000 - Fuzz 200 - Event code 2 (Z) - Value 905 - Min -8000 - Max 8000 - Fuzz 200 - Event code 40 (Misc) - Value 0 - Min 0 - Max 1 - Event type 4 (Misc) - - -Register/Platform parameters Description ----------------------------------------- - -mode: - 0: power down mode - 1: 100 Hz Measurement mode - 2: 400 Hz Measurement mode - 3: 40 Hz Measurement mode - 4: Motion Detect mode (default) - 5: 100 Hz Free fall mode - 6: 40 Hz Free fall mode - 7: Power off mode - -grange: - 2000: 2000 mg or 2G Range - 8000: 8000 mg or 8G Range - -mdthr: - X: X * 71mg (8G Range) - X: X * 18mg (2G Range) - -mdfftmr: - X: (X & 0x70) * 100 ms (MDTMR) - (X & 0x0F) * 2.5 ms (FFTMR 400 Hz) - (X & 0x0F) * 10 ms (FFTMR 100 Hz) - -ffthr: - X: (X >> 2) * 18mg (2G Range) - X: (X & 0x0F) * 71 mg (8G Range) |