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Input: goodix - use string-based chip ID

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For Goodix GT917S chip, the chip ID string is "917S", which contains not
only numbers now.

Use string-based chip ID in the driver to support this chip and further
chips with alphanumber ID.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20200228010146.12215-3-icenowy@aosc.io
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Icenowy Zheng 2020-03-24 11:57:58 -07:00 committed by Dmitry Torokhov
parent 8c2327ef79
commit cae102e2fc
1 changed files with 39 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
drivers/input/touchscreen/goodix.c
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@ -79,6 +79,13 @@ struct goodix_chip_data {
void (*calc_config_checksum)(struct goodix_ts_data *ts);
};
struct goodix_chip_id {
const char *id;
const struct goodix_chip_data *data;
};
#define GOODIX_ID_MAX_LEN 4
struct goodix_ts_data {
struct i2c_client *client;
struct input_dev *input_dev;
@ -92,7 +99,7 @@ struct goodix_ts_data {
struct gpio_desc *gpiod_rst;
int gpio_count;
int gpio_int_idx;
u16 id;
char id[GOODIX_ID_MAX_LEN + 1];
u16 version;
const char *cfg_name;
bool reset_controller_at_probe;
@ -140,6 +147,22 @@ static const struct goodix_chip_data gt9x_chip_data = {
.calc_config_checksum = goodix_calc_cfg_checksum_8,
};
static const struct goodix_chip_id goodix_chip_ids[] = {
{ .id = "1151", .data = &gt1x_chip_data },
{ .id = "5663", .data = &gt1x_chip_data },
{ .id = "5688", .data = &gt1x_chip_data },
{ .id = "911", .data = &gt911_chip_data },
{ .id = "9271", .data = &gt911_chip_data },
{ .id = "9110", .data = &gt911_chip_data },
{ .id = "927", .data = &gt911_chip_data },
{ .id = "928", .data = &gt911_chip_data },
{ .id = "912", .data = &gt967_chip_data },
{ .id = "967", .data = &gt967_chip_data },
{ }
};
static const unsigned long goodix_irq_flags[] = {
IRQ_TYPE_EDGE_RISING,
IRQ_TYPE_EDGE_FALLING,
@ -276,28 +299,16 @@ static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value)
return goodix_i2c_write(client, reg, &value, sizeof(value));
}
static const struct goodix_chip_data *goodix_get_chip_data(u16 id)
static const struct goodix_chip_data *goodix_get_chip_data(const char *id)
{
switch (id) {
case 1151:
case 5663:
case 5688:
return &gt1x_chip_data;
unsigned int i;
case 911:
case 9271:
case 9110:
case 927:
case 928:
return &gt911_chip_data;
case 912:
case 967:
return &gt967_chip_data;
default:
return &gt9x_chip_data;
for (i = 0; goodix_chip_ids[i].id; i++) {
if (!strcmp(goodix_chip_ids[i].id, id))
return goodix_chip_ids[i].data;
}
return &gt9x_chip_data;
}
static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
@ -951,7 +962,7 @@ static int goodix_read_version(struct goodix_ts_data *ts)
{
int error;
u8 buf[6];
char id_str[5];
char id_str[GOODIX_ID_MAX_LEN + 1];
error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf));
if (error) {
@ -959,14 +970,13 @@ static int goodix_read_version(struct goodix_ts_data *ts)
return error;
}
memcpy(id_str, buf, 4);
id_str[4] = 0;
if (kstrtou16(id_str, 10, &ts->id))
ts->id = 0x1001;
memcpy(id_str, buf, GOODIX_ID_MAX_LEN);
id_str[GOODIX_ID_MAX_LEN] = 0;
strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1);
ts->version = get_unaligned_le16(&buf[4]);
dev_info(&ts->client->dev, "ID %d, version: %04x\n", ts->id,
dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id,
ts->version);
return 0;
@ -1025,7 +1035,8 @@ static int goodix_configure_dev(struct goodix_ts_data *ts)
ts->input_dev->phys = "input/ts";
ts->input_dev->id.bustype = BUS_I2C;
ts->input_dev->id.vendor = 0x0416;
ts->input_dev->id.product = ts->id;
if (kstrtou16(ts->id, 10, &ts->input_dev->id.product))
ts->input_dev->id.product = 0x1001;
ts->input_dev->id.version = ts->version;
ts->input_dev->keycode = ts->keymap;
@ -1228,7 +1239,7 @@ reset:
if (ts->load_cfg_from_disk) {
/* update device config */
ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL,
"goodix_%d_cfg.bin", ts->id);
"goodix_%s_cfg.bin", ts->id);
if (!ts->cfg_name)
return -ENOMEM;