128 lines
5.0 KiB
C
128 lines
5.0 KiB
C
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#ifndef __LIS3LV02D_H_
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#define __LIS3LV02D_H_
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/**
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* struct lis3lv02d_platform_data - lis3 chip family platform data
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* @click_flags: Click detection unit configuration
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* @click_thresh_x: Click detection unit x axis threshold
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* @click_thresh_y: Click detection unit y axis threshold
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* @click_thresh_z: Click detection unit z axis threshold
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* @click_time_limit: Click detection unit time parameter
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* @click_latency: Click detection unit latency parameter
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* @click_window: Click detection unit window parameter
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* @irq_cfg: On chip irq source and type configuration (click /
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* data available / wake up, open drain, polarity)
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* @irq_flags1: Additional irq triggering flags for irq channel 0
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* @irq_flags2: Additional irq triggering flags for irq channel 1
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* @duration1: Wake up unit 1 duration parameter
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* @duration2: Wake up unit 2 duration parameter
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* @wakeup_flags: Wake up unit 1 flags
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* @wakeup_thresh: Wake up unit 1 threshold value
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* @wakeup_flags2: Wake up unit 2 flags
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* @wakeup_thresh2: Wake up unit 2 threshold value
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* @hipass_ctrl: High pass filter control (enable / disable, cut off
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* frequency)
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* @axis_x: Sensor orientation remapping for x-axis
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* @axis_y: Sensor orientation remapping for y-axis
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* @axis_z: Sensor orientation remapping for z-axis
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* @driver_features: Enable bits for different features. Disabled by default
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* @default_rate: Default sampling rate. 0 means reset default
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* @setup_resources: Interrupt line setup call back function
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* @release_resources: Interrupt line release call back function
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* @st_min_limits[3]: Selftest acceptance minimum values
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* @st_max_limits[3]: Selftest acceptance maximum values
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* @irq2: Irq line 2 number
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*
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* Platform data is used to setup the sensor chip. Meaning of the different
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* chip features can be found from the data sheet. It is publicly available
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* at www.st.com web pages. Currently the platform data is used
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* only for the 8 bit device. The 8 bit device has two wake up / free fall
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* detection units and click detection unit. There are plenty of ways to
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* configure the chip which makes is quite hard to explain deeper meaning of
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* the fields here. Behaviour of the detection blocks varies heavily depending
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* on the configuration. For example, interrupt detection block can use high
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* pass filtered data which makes it react to the changes in the acceleration.
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* Irq_flags can be used to enable interrupt detection on the both edges.
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* With proper chip configuration this produces interrupt when some trigger
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* starts and when it goes away.
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*/
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struct lis3lv02d_platform_data {
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/* please note: the 'click' feature is only supported for
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* LIS[32]02DL variants of the chip and will be ignored for
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* others */
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#define LIS3_CLICK_SINGLE_X (1 << 0)
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#define LIS3_CLICK_DOUBLE_X (1 << 1)
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#define LIS3_CLICK_SINGLE_Y (1 << 2)
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#define LIS3_CLICK_DOUBLE_Y (1 << 3)
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#define LIS3_CLICK_SINGLE_Z (1 << 4)
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#define LIS3_CLICK_DOUBLE_Z (1 << 5)
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unsigned char click_flags;
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unsigned char click_thresh_x;
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unsigned char click_thresh_y;
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unsigned char click_thresh_z;
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unsigned char click_time_limit;
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unsigned char click_latency;
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unsigned char click_window;
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#define LIS3_IRQ1_DISABLE (0 << 0)
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#define LIS3_IRQ1_FF_WU_1 (1 << 0)
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#define LIS3_IRQ1_FF_WU_2 (2 << 0)
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#define LIS3_IRQ1_FF_WU_12 (3 << 0)
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#define LIS3_IRQ1_DATA_READY (4 << 0)
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#define LIS3_IRQ1_CLICK (7 << 0)
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#define LIS3_IRQ1_MASK (7 << 0)
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#define LIS3_IRQ2_DISABLE (0 << 3)
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#define LIS3_IRQ2_FF_WU_1 (1 << 3)
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#define LIS3_IRQ2_FF_WU_2 (2 << 3)
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#define LIS3_IRQ2_FF_WU_12 (3 << 3)
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#define LIS3_IRQ2_DATA_READY (4 << 3)
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#define LIS3_IRQ2_CLICK (7 << 3)
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#define LIS3_IRQ2_MASK (7 << 3)
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#define LIS3_IRQ_OPEN_DRAIN (1 << 6)
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#define LIS3_IRQ_ACTIVE_LOW (1 << 7)
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unsigned char irq_cfg;
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unsigned char irq_flags1; /* Additional irq edge / level flags */
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unsigned char irq_flags2; /* Additional irq edge / level flags */
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unsigned char duration1;
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unsigned char duration2;
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#define LIS3_WAKEUP_X_LO (1 << 0)
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#define LIS3_WAKEUP_X_HI (1 << 1)
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#define LIS3_WAKEUP_Y_LO (1 << 2)
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#define LIS3_WAKEUP_Y_HI (1 << 3)
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#define LIS3_WAKEUP_Z_LO (1 << 4)
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#define LIS3_WAKEUP_Z_HI (1 << 5)
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unsigned char wakeup_flags;
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unsigned char wakeup_thresh;
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unsigned char wakeup_flags2;
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unsigned char wakeup_thresh2;
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#define LIS3_HIPASS_CUTFF_8HZ 0
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#define LIS3_HIPASS_CUTFF_4HZ 1
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#define LIS3_HIPASS_CUTFF_2HZ 2
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#define LIS3_HIPASS_CUTFF_1HZ 3
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#define LIS3_HIPASS1_DISABLE (1 << 2)
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#define LIS3_HIPASS2_DISABLE (1 << 3)
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unsigned char hipass_ctrl;
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#define LIS3_NO_MAP 0
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#define LIS3_DEV_X 1
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#define LIS3_DEV_Y 2
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#define LIS3_DEV_Z 3
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#define LIS3_INV_DEV_X -1
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#define LIS3_INV_DEV_Y -2
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#define LIS3_INV_DEV_Z -3
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s8 axis_x;
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s8 axis_y;
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s8 axis_z;
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#define LIS3_USE_BLOCK_READ 0x02
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u16 driver_features;
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int default_rate;
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int (*setup_resources)(void);
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int (*release_resources)(void);
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/* Limits for selftest are specified in chip data sheet */
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s16 st_min_limits[3]; /* min pass limit x, y, z */
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s16 st_max_limits[3]; /* max pass limit x, y, z */
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int irq2;
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};
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#endif /* __LIS3LV02D_H_ */
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