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Input: ili210x - add ili2120 support
This adds support for the Ilitek ili2120 touchscreen found in the Fairphone 2 smartphone. Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Link: https://lore.kernel.org/r/20200209151904.661210-1-luca@z3ntu.xyz Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -1,9 +1,10 @@
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Ilitek ILI210x/ILI2117/ILI251x touchscreen controller
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Ilitek ILI210x/ILI2117/ILI2120/ILI251x touchscreen controller
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Required properties:
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- compatible:
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ilitek,ili210x for ILI210x
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ilitek,ili2117 for ILI2117
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ilitek,ili2120 for ILI2120
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ilitek,ili251x for ILI251x
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- reg: The I2C address of the device
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@ -167,6 +167,36 @@ static const struct ili2xxx_chip ili211x_chip = {
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.resolution = 2048,
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};
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static bool ili212x_touchdata_to_coords(const u8 *touchdata,
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unsigned int finger,
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unsigned int *x, unsigned int *y)
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{
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u16 val;
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val = get_unaligned_be16(touchdata + 3 + (finger * 5) + 0);
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if (!(val & BIT(15))) /* Touch indication */
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return false;
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*x = val & 0x3fff;
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*y = get_unaligned_be16(touchdata + 3 + (finger * 5) + 2);
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return true;
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}
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static bool ili212x_check_continue_polling(const u8 *data, bool touch)
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{
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return touch;
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}
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static const struct ili2xxx_chip ili212x_chip = {
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.read_reg = ili210x_read_reg,
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.get_touch_data = ili210x_read_touch_data,
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.parse_touch_data = ili212x_touchdata_to_coords,
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.continue_polling = ili212x_check_continue_polling,
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.max_touches = 10,
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.has_calibrate_reg = true,
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};
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static int ili251x_read_reg(struct i2c_client *client,
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u8 reg, void *buf, size_t len)
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{
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@ -447,6 +477,7 @@ static int ili210x_i2c_probe(struct i2c_client *client,
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static const struct i2c_device_id ili210x_i2c_id[] = {
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{ "ili210x", (long)&ili210x_chip },
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{ "ili2117", (long)&ili211x_chip },
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{ "ili2120", (long)&ili212x_chip },
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{ "ili251x", (long)&ili251x_chip },
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{ }
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};
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@ -455,6 +486,7 @@ MODULE_DEVICE_TABLE(i2c, ili210x_i2c_id);
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static const struct of_device_id ili210x_dt_ids[] = {
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{ .compatible = "ilitek,ili210x", .data = &ili210x_chip },
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{ .compatible = "ilitek,ili2117", .data = &ili211x_chip },
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{ .compatible = "ilitek,ili2120", .data = &ili212x_chip },
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{ .compatible = "ilitek,ili251x", .data = &ili251x_chip },
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{ }
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};
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