diff options
Diffstat (limited to 'drivers/input/touchscreen/himax_hx83112b.c')
| -rw-r--r-- | drivers/input/touchscreen/himax_hx83112b.c | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/input/touchscreen/himax_hx83112b.c b/drivers/input/touchscreen/himax_hx83112b.c index c9cc69bf242a..5092a357c332 100644 --- a/drivers/input/touchscreen/himax_hx83112b.c +++ b/drivers/input/touchscreen/himax_hx83112b.c @@ -20,8 +20,6 @@ #include <linux/kernel.h> #include <linux/regmap.h> -#define HIMAX_ID_83112B 0x83112b - #define HIMAX_MAX_POINTS 10 #define HIMAX_AHB_ADDR_BYTE_0 0x00 @@ -55,7 +53,16 @@ struct himax_event { static_assert(sizeof(struct himax_event) == 56); +struct himax_ts_data; +struct himax_chip { + u32 id; + int (*check_id)(struct himax_ts_data *ts); + int (*read_events)(struct himax_ts_data *ts, struct himax_event *event, + size_t length); +}; + struct himax_ts_data { + const struct himax_chip *chip; struct gpio_desc *gpiod_rst; struct input_dev *input_dev; struct i2c_client *client; @@ -167,15 +174,12 @@ static int himax_check_product_id(struct himax_ts_data *ts) dev_dbg(&ts->client->dev, "Product id: %x\n", product_id); - switch (product_id) { - case HIMAX_ID_83112B: + if (product_id == ts->chip->id) return 0; - default: - dev_err(&ts->client->dev, - "Unknown product id: %x\n", product_id); - return -EINVAL; - } + dev_err(&ts->client->dev, "Unknown product id: %x\n", + product_id); + return -EINVAL; } static int himax_input_register(struct himax_ts_data *ts) @@ -277,13 +281,19 @@ static bool himax_verify_checksum(struct himax_ts_data *ts, return true; } +static int himax_read_events(struct himax_ts_data *ts, + struct himax_event *event, size_t length) +{ + return regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, event, + length); +} + static int himax_handle_input(struct himax_ts_data *ts) { int error; struct himax_event event; - error = regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, &event, - sizeof(event)); + error = ts->chip->read_events(ts, &event, sizeof(event)); if (error) { dev_err(&ts->client->dev, "Failed to read input event: %d\n", error); @@ -329,6 +339,7 @@ static int himax_probe(struct i2c_client *client) i2c_set_clientdata(client, ts); ts->client = client; + ts->chip = i2c_get_match_data(client); ts->regmap = devm_regmap_init_i2c(client, &himax_regmap_config); error = PTR_ERR_OR_ZERO(ts->regmap); @@ -346,9 +357,11 @@ static int himax_probe(struct i2c_client *client) himax_reset(ts); - error = himax_check_product_id(ts); - if (error) - return error; + if (ts->chip->check_id) { + error = himax_check_product_id(ts); + if (error) + return error; + } error = himax_input_register(ts); if (error) @@ -381,15 +394,21 @@ static int himax_resume(struct device *dev) static DEFINE_SIMPLE_DEV_PM_OPS(himax_pm_ops, himax_suspend, himax_resume); +static const struct himax_chip hx83112b_chip = { + .id = 0x83112b, + .check_id = himax_check_product_id, + .read_events = himax_read_events, +}; + static const struct i2c_device_id himax_ts_id[] = { - { "hx83112b" }, + { "hx83112b", (kernel_ulong_t)&hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, himax_ts_id); #ifdef CONFIG_OF static const struct of_device_id himax_of_match[] = { - { .compatible = "himax,hx83112b" }, + { .compatible = "himax,hx83112b", .data = &hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, himax_of_match); |