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leds: pca955x: Convert enum->pointer for data in the match tables

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Convert enum->pointer for data in the match tables, so that
device_get_match_data() can do match against OF/ACPI/I2C tables, once i2c
bus type match support added to it.

Replace enum->struct *pca955x_chipdefs for data in the match table.
Simplify the probe() by replacing device_get_match_data() and ID lookup
for retrieving data by i2c_get_match_data().

While at it, add const definition to pca955x_chipdefs[].

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230923171921.53503-2-biju.das.jz@bp.renesas.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Biju Das 2023-09-23 18:19:20 +01:00 committed by Lee Jones
parent a337ee0d25
commit 3b581cb588
1 changed files with 17 additions and 30 deletions
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47
drivers/leds/leds-pca955x.c
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@ -76,7 +76,7 @@ struct pca955x_chipdef {
int slv_addr_shift; /* Number of bits to ignore */
};
static struct pca955x_chipdef pca955x_chipdefs[] = {
static const struct pca955x_chipdef pca955x_chipdefs[] = {
[pca9550] = {
.bits = 2,
.slv_addr = /* 110000x */ 0x60,
@ -105,11 +105,11 @@ static struct pca955x_chipdef pca955x_chipdefs[] = {
};
static const struct i2c_device_id pca955x_id[] = {
{ "pca9550", pca9550 },
{ "pca9551", pca9551 },
{ "pca9552", pca9552 },
{ "ibm-pca9552", ibm_pca9552 },
{ "pca9553", pca9553 },
{ "pca9550", (kernel_ulong_t)&pca955x_chipdefs[pca9550] },
{ "pca9551", (kernel_ulong_t)&pca955x_chipdefs[pca9551] },
{ "pca9552", (kernel_ulong_t)&pca955x_chipdefs[pca9552] },
{ "ibm-pca9552", (kernel_ulong_t)&pca955x_chipdefs[ibm_pca9552] },
{ "pca9553", (kernel_ulong_t)&pca955x_chipdefs[pca9553] },
{ }
};
MODULE_DEVICE_TABLE(i2c, pca955x_id);
@ -117,7 +117,7 @@ MODULE_DEVICE_TABLE(i2c, pca955x_id);
struct pca955x {
struct mutex lock;
struct pca955x_led *leds;
struct pca955x_chipdef *chipdef;
const struct pca955x_chipdef *chipdef;
struct i2c_client *client;
unsigned long active_pins;
#ifdef CONFIG_LEDS_PCA955X_GPIO
@ -415,7 +415,7 @@ static int pca955x_gpio_direction_output(struct gpio_chip *gc,
#endif /* CONFIG_LEDS_PCA955X_GPIO */
static struct pca955x_platform_data *
pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
pca955x_get_pdata(struct i2c_client *client, const struct pca955x_chipdef *chip)
{
struct pca955x_platform_data *pdata;
struct pca955x_led *led;
@ -458,11 +458,11 @@ pca955x_get_pdata(struct i2c_client *client, struct pca955x_chipdef *chip)
}
static const struct of_device_id of_pca955x_match[] = {
{ .compatible = "nxp,pca9550", .data = (void *)pca9550 },
{ .compatible = "nxp,pca9551", .data = (void *)pca9551 },
{ .compatible = "nxp,pca9552", .data = (void *)pca9552 },
{ .compatible = "ibm,pca9552", .data = (void *)ibm_pca9552 },
{ .compatible = "nxp,pca9553", .data = (void *)pca9553 },
{ .compatible = "nxp,pca9550", .data = &pca955x_chipdefs[pca9550] },
{ .compatible = "nxp,pca9551", .data = &pca955x_chipdefs[pca9551] },
{ .compatible = "nxp,pca9552", .data = &pca955x_chipdefs[pca9552] },
{ .compatible = "ibm,pca9552", .data = &pca955x_chipdefs[ibm_pca9552] },
{ .compatible = "nxp,pca9553", .data = &pca955x_chipdefs[pca9553] },
{},
};
MODULE_DEVICE_TABLE(of, of_pca955x_match);
@ -471,7 +471,7 @@ static int pca955x_probe(struct i2c_client *client)
{
struct pca955x *pca955x;
struct pca955x_led *pca955x_led;
struct pca955x_chipdef *chip;
const struct pca955x_chipdef *chip;
struct led_classdev *led;
struct led_init_data init_data;
struct i2c_adapter *adapter;
@ -480,24 +480,11 @@ static int pca955x_probe(struct i2c_client *client)
bool set_default_label = false;
bool keep_pwm = false;
char default_label[8];
enum pca955x_type chip_type;
const void *md = device_get_match_data(&client->dev);
if (md) {
chip_type = (enum pca955x_type)(uintptr_t)md;
} else {
const struct i2c_device_id *id = i2c_match_id(pca955x_id,
client);
chip = i2c_get_match_data(client);
if (!chip)
return dev_err_probe(&client->dev, -ENODEV, "unknown chip\n");
if (id) {
chip_type = (enum pca955x_type)id->driver_data;
} else {
dev_err(&client->dev, "unknown chip\n");
return -ENODEV;
}
}
chip = &pca955x_chipdefs[chip_type];
adapter = client->adapter;
pdata = dev_get_platdata(&client->dev);
if (!pdata) {