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Input: cap11xx - add support for cap1206 

According to the datasheet "The CAP1206 is pin- and register-compatible
with the CAP1106, with the exception of the GAIN[1:0] bits and ALT_POL
bit"(57). So, this patch aims to disable them as they are no longer
used.

Signed-off-by: Jesse Taube <mr.bossman075@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Jesse Taube 2021-11-02 16:55:49 -07:00 committed by Dmitry Torokhov
parent 5fe11512cd
commit 322a552e19
2 changed files with 30 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/devicetree/bindings/input/cap11xx.txt
View File

@ -9,6 +9,7 @@ Required properties:
"microchip,cap1106"
"microchip,cap1126"
"microchip,cap1188"
"microchip,cap1206"
reg: The I2C slave address of the device.

43
drivers/input/keyboard/cap11xx.c
View File

@ -91,18 +91,21 @@ struct cap11xx_hw_model {
u8 product_id;
unsigned int num_channels;
unsigned int num_leds;
bool no_gain;
};
enum {
CAP1106,
CAP1126,
CAP1188,
CAP1206,
};
static const struct cap11xx_hw_model cap11xx_devices[] = {
[CAP1106] = { .product_id = 0x55, .num_channels = 6, .num_leds = 0 },
[CAP1126] = { .product_id = 0x53, .num_channels = 6, .num_leds = 2 },
[CAP1188] = { .product_id = 0x50, .num_channels = 8, .num_leds = 8 },
[CAP1106] = { .product_id = 0x55, .num_channels = 6, .num_leds = 0, .no_gain = false },
[CAP1126] = { .product_id = 0x53, .num_channels = 6, .num_leds = 2, .no_gain = false },
[CAP1188] = { .product_id = 0x50, .num_channels = 8, .num_leds = 8, .no_gain = false },
[CAP1206] = { .product_id = 0x67, .num_channels = 6, .num_leds = 0, .no_gain = true },
};
static const struct reg_default cap11xx_reg_defaults[] = {
@ -378,17 +381,24 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client,
node = dev->of_node;
if (!of_property_read_u32(node, "microchip,sensor-gain", &gain32)) {
if (is_power_of_2(gain32) && gain32 <= 8)
if (cap->no_gain)
dev_warn(dev,
"This version doesn't support sensor gain\n");
else if (is_power_of_2(gain32) && gain32 <= 8)
gain = ilog2(gain32);
else
dev_err(dev, "Invalid sensor-gain value %d\n", gain32);
}
if (of_property_read_bool(node, "microchip,irq-active-high")) {
error = regmap_update_bits(priv->regmap, CAP11XX_REG_CONFIG2,
CAP11XX_REG_CONFIG2_ALT_POL, 0);
if (error)
return error;
if (id->driver_data != CAP1206) {
if (of_property_read_bool(node, "microchip,irq-active-high")) {
error = regmap_update_bits(priv->regmap,
CAP11XX_REG_CONFIG2,
CAP11XX_REG_CONFIG2_ALT_POL,
0);
if (error)
return error;
}
}
/* Provide some useful defaults */
@ -398,11 +408,14 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client,
of_property_read_u32_array(node, "linux,keycodes",
priv->keycodes, cap->num_channels);
error = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL,
CAP11XX_REG_MAIN_CONTROL_GAIN_MASK,
gain << CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT);
if (error)
return error;
if (!cap->no_gain) {
error = regmap_update_bits(priv->regmap,
CAP11XX_REG_MAIN_CONTROL,
CAP11XX_REG_MAIN_CONTROL_GAIN_MASK,
gain << CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT);
if (error)
return error;
}
/* Disable autorepeat. The Linux input system has its own handling. */
error = regmap_write(priv->regmap, CAP11XX_REG_REPEAT_RATE, 0);
@ -470,6 +483,7 @@ static const struct of_device_id cap11xx_dt_ids[] = {
{ .compatible = "microchip,cap1106", },
{ .compatible = "microchip,cap1126", },
{ .compatible = "microchip,cap1188", },
{ .compatible = "microchip,cap1206", },
{}
};
MODULE_DEVICE_TABLE(of, cap11xx_dt_ids);
@ -478,6 +492,7 @@ static const struct i2c_device_id cap11xx_i2c_ids[] = {
{ "cap1106", CAP1106 },
{ "cap1126", CAP1126 },
{ "cap1188", CAP1188 },
{ "cap1206", CAP1206 },
{}
};
MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids);