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Message-ID: <ZXlCRsnOu_L8xeTC@google.com>
Date: Tue, 12 Dec 2023 21:33:58 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-input@...r.kernel.org
Cc: Jiri Valek - 2N <jiriv@...s.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: cap11xx - stop using chip ID when configuring it
struct cap11xx_hw_model is supposed to describe the chip capabilities,
however later code changes introduced checks against chip ID.
Introduce new capabilities in cap11xx_hw_model and use them when applying
chip configuration, and remove the enum for chip ID. While at it, rename
no_gain to has_gain to match the rest of the new capabilities.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
drivers/input/keyboard/cap11xx.c | 125 +++++++++++++++++--------------
1 file changed, 70 insertions(+), 55 deletions(-)
diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c
index ebcbc00d2059..c85bb0ca0e39 100644
--- a/drivers/input/keyboard/cap11xx.c
+++ b/drivers/input/keyboard/cap11xx.c
@@ -86,7 +86,6 @@ struct cap11xx_priv {
struct device *dev;
struct input_dev *idev;
const struct cap11xx_hw_model *model;
- u8 id;
struct cap11xx_led *leds;
int num_leds;
@@ -104,27 +103,10 @@ struct cap11xx_hw_model {
u8 product_id;
unsigned int num_channels;
unsigned int num_leds;
- bool no_gain;
-};
-
-enum {
- CAP1106,
- CAP1126,
- CAP1188,
- CAP1203,
- CAP1206,
- CAP1293,
- CAP1298
-};
-
-static const struct cap11xx_hw_model cap11xx_devices[] = {
- [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 },
- [CAP1203] = { .product_id = 0x6d, .num_channels = 3, .num_leds = 0, .no_gain = true },
- [CAP1206] = { .product_id = 0x67, .num_channels = 6, .num_leds = 0, .no_gain = true },
- [CAP1293] = { .product_id = 0x6f, .num_channels = 3, .num_leds = 0, .no_gain = false },
- [CAP1298] = { .product_id = 0x71, .num_channels = 8, .num_leds = 0, .no_gain = false },
+ bool has_gain;
+ bool has_irq_config;
+ bool has_sensitivity_control;
+ bool has_signal_guard;
};
static const struct reg_default cap11xx_reg_defaults[] = {
@@ -227,7 +209,7 @@ static int cap11xx_init_keys(struct cap11xx_priv *priv)
}
if (!of_property_read_u32(node, "microchip,sensor-gain", &u32_val)) {
- if (priv->model->no_gain) {
+ if (!priv->model->has_gain) {
dev_warn(dev,
"This model doesn't support 'sensor-gain'\n");
} else if (is_power_of_2(u32_val) && u32_val <= 8) {
@@ -246,9 +228,7 @@ static int cap11xx_init_keys(struct cap11xx_priv *priv)
}
if (of_property_read_bool(node, "microchip,irq-active-high")) {
- if (priv->id == CAP1106 ||
- priv->id == CAP1126 ||
- priv->id == CAP1188) {
+ if (priv->model->has_irq_config) {
error = regmap_update_bits(priv->regmap,
CAP11XX_REG_CONFIG2,
CAP11XX_REG_CONFIG2_ALT_POL,
@@ -299,7 +279,7 @@ static int cap11xx_init_keys(struct cap11xx_priv *priv)
if (!of_property_read_u32_array(node, "microchip,calib-sensitivity",
priv->calib_sensitivities,
priv->model->num_channels)) {
- if (priv->id == CAP1293 || priv->id == CAP1298) {
+ if (priv->model->has_sensitivity_control) {
for (i = 0; i < priv->model->num_channels; i++) {
if (!is_power_of_2(priv->calib_sensitivities[i]) ||
priv->calib_sensitivities[i] > 4) {
@@ -314,7 +294,7 @@ static int cap11xx_init_keys(struct cap11xx_priv *priv)
if (error)
return error;
- if (priv->id == CAP1298) {
+ if (priv->model->num_channels > 4) {
error = cap11xx_write_calib_sens_config_2(priv);
if (error)
return error;
@@ -336,7 +316,7 @@ static int cap11xx_init_keys(struct cap11xx_priv *priv)
}
if (priv->signal_guard_inputs_mask) {
- if (priv->id == CAP1293 || priv->id == CAP1298) {
+ if (priv->model->has_signal_guard) {
error = regmap_write(priv->regmap,
CAP11XX_REG_SIGNAL_GUARD_ENABLE,
priv->signal_guard_inputs_mask);
@@ -511,20 +491,16 @@ static int cap11xx_init_leds(struct device *dev,
static int cap11xx_i2c_probe(struct i2c_client *i2c_client)
{
- const struct i2c_device_id *id = i2c_client_get_device_id(i2c_client);
+ const struct i2c_device_id *id;
+ const struct cap11xx_hw_model *cap;
struct device *dev = &i2c_client->dev;
struct cap11xx_priv *priv;
- const struct cap11xx_hw_model *cap;
int i, error;
unsigned int val, rev;
- if (id->driver_data >= ARRAY_SIZE(cap11xx_devices)) {
- dev_err(dev, "Invalid device ID %lu\n", id->driver_data);
- return -EINVAL;
- }
-
- cap = &cap11xx_devices[id->driver_data];
- if (!cap || !cap->num_channels) {
+ id = i2c_client_get_device_id(i2c_client);
+ cap = i2c_get_match_data(i2c_client);
+ if (!id || !cap || !cap->num_channels) {
dev_err(dev, "Invalid device configuration\n");
return -EINVAL;
}
@@ -569,7 +545,6 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client)
id->name, rev);
priv->model = cap;
- priv->id = id->driver_data;
dev_info(dev, "CAP11XX device detected, model %s, revision 0x%02x\n",
id->name, rev);
@@ -630,27 +605,67 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client)
return 0;
}
+static const struct cap11xx_hw_model cap1106_model = {
+ .product_id = 0x55, .num_channels = 6, .num_leds = 0,
+ .has_gain = true,
+ .has_irq_config = true,
+};
+
+static const struct cap11xx_hw_model cap1126_model = {
+ .product_id = 0x53, .num_channels = 6, .num_leds = 2,
+ .has_gain = true,
+ .has_irq_config = true,
+};
+
+static const struct cap11xx_hw_model cap1188_model = {
+ .product_id = 0x50, .num_channels = 8, .num_leds = 8,
+ .has_gain = true,
+ .has_irq_config = true,
+};
+
+static const struct cap11xx_hw_model cap1203_model = {
+ .product_id = 0x6d, .num_channels = 3, .num_leds = 0,
+};
+
+static const struct cap11xx_hw_model cap1206_model = {
+ .product_id = 0x67, .num_channels = 6, .num_leds = 0,
+};
+
+static const struct cap11xx_hw_model cap1293_model = {
+ .product_id = 0x6f, .num_channels = 3, .num_leds = 0,
+ .has_gain = true,
+ .has_sensitivity_control = true,
+ .has_signal_guard = true,
+};
+
+static const struct cap11xx_hw_model cap1298_model = {
+ .product_id = 0x71, .num_channels = 8, .num_leds = 0,
+ .has_gain = true,
+ .has_sensitivity_control = true,
+ .has_signal_guard = true,
+};
+
static const struct of_device_id cap11xx_dt_ids[] = {
- { .compatible = "microchip,cap1106", },
- { .compatible = "microchip,cap1126", },
- { .compatible = "microchip,cap1188", },
- { .compatible = "microchip,cap1203", },
- { .compatible = "microchip,cap1206", },
- { .compatible = "microchip,cap1293", },
- { .compatible = "microchip,cap1298", },
- {}
+ { .compatible = "microchip,cap1106", .data = &cap1106_model },
+ { .compatible = "microchip,cap1126", .data = &cap1126_model },
+ { .compatible = "microchip,cap1188", .data = &cap1188_model },
+ { .compatible = "microchip,cap1203", .data = &cap1203_model },
+ { .compatible = "microchip,cap1206", .data = &cap1206_model },
+ { .compatible = "microchip,cap1293", .data = &cap1293_model },
+ { .compatible = "microchip,cap1298", .data = &cap1298_model },
+ { }
};
MODULE_DEVICE_TABLE(of, cap11xx_dt_ids);
static const struct i2c_device_id cap11xx_i2c_ids[] = {
- { "cap1106", CAP1106 },
- { "cap1126", CAP1126 },
- { "cap1188", CAP1188 },
- { "cap1203", CAP1203 },
- { "cap1206", CAP1206 },
- { "cap1293", CAP1293 },
- { "cap1298", CAP1298 },
- {}
+ { "cap1106", (kernel_ulong_t)&cap1106_model },
+ { "cap1126", (kernel_ulong_t)&cap1126_model },
+ { "cap1188", (kernel_ulong_t)&cap1188_model },
+ { "cap1203", (kernel_ulong_t)&cap1203_model },
+ { "cap1206", (kernel_ulong_t)&cap1206_model },
+ { "cap1293", (kernel_ulong_t)&cap1293_model },
+ { "cap1298", (kernel_ulong_t)&cap1298_model },
+ { }
};
MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids);
--
2.43.0.472.g3155946c3a-goog
--
Dmitry
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