mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
5224b7a936
When ARCH=x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/bcm/pinctrl-bcm4908.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/pinctrl-mcp23s08_i2c.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/pinctrl-mcp23s08_spi.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/pinctrl-mcp23s08.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/meson/pinctrl-meson.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). This includes many meson drivers which, although they did not produce a warning with the x86 allmodconfig configuration, may cause this warning with ARM or ARM64 configurations. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> # for Amlogic Pinctrl drivers Link: https://lore.kernel.org/r/20240610-md-drivers-pinctrl-v1-1-68462e3d960c@quicinc.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* MCP23S08 I2C GPIO driver */
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/module.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "pinctrl-mcp23s08.h"
|
|
|
|
static int mcp230xx_probe(struct i2c_client *client)
|
|
{
|
|
const struct mcp23s08_info *info;
|
|
struct device *dev = &client->dev;
|
|
struct mcp23s08 *mcp;
|
|
int ret;
|
|
|
|
mcp = devm_kzalloc(dev, sizeof(*mcp), GFP_KERNEL);
|
|
if (!mcp)
|
|
return -ENOMEM;
|
|
|
|
info = i2c_get_match_data(client);
|
|
if (!info)
|
|
return dev_err_probe(dev, -EINVAL, "invalid device type\n");
|
|
|
|
mcp->reg_shift = info->reg_shift;
|
|
mcp->chip.ngpio = info->ngpio;
|
|
mcp->chip.label = info->label;
|
|
mcp->regmap = devm_regmap_init_i2c(client, info->regmap);
|
|
if (IS_ERR(mcp->regmap))
|
|
return PTR_ERR(mcp->regmap);
|
|
|
|
mcp->irq = client->irq;
|
|
mcp->pinctrl_desc.name = "mcp23xxx-pinctrl";
|
|
|
|
ret = mcp23s08_probe_one(mcp, dev, client->addr, info->type, -1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
i2c_set_clientdata(client, mcp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct mcp23s08_info mcp23008_i2c = {
|
|
.regmap = &mcp23x08_regmap,
|
|
.label = "mcp23008",
|
|
.type = MCP_TYPE_008,
|
|
.ngpio = 8,
|
|
.reg_shift = 0,
|
|
};
|
|
|
|
static const struct mcp23s08_info mcp23017_i2c = {
|
|
.regmap = &mcp23x17_regmap,
|
|
.label = "mcp23017",
|
|
.type = MCP_TYPE_017,
|
|
.ngpio = 16,
|
|
.reg_shift = 1,
|
|
};
|
|
|
|
static const struct mcp23s08_info mcp23018_i2c = {
|
|
.regmap = &mcp23x17_regmap,
|
|
.label = "mcp23018",
|
|
.type = MCP_TYPE_018,
|
|
.ngpio = 16,
|
|
.reg_shift = 1,
|
|
};
|
|
|
|
static const struct i2c_device_id mcp230xx_id[] = {
|
|
{ "mcp23008", (kernel_ulong_t)&mcp23008_i2c },
|
|
{ "mcp23017", (kernel_ulong_t)&mcp23017_i2c },
|
|
{ "mcp23018", (kernel_ulong_t)&mcp23018_i2c },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, mcp230xx_id);
|
|
|
|
static const struct of_device_id mcp23s08_i2c_of_match[] = {
|
|
{ .compatible = "microchip,mcp23008", .data = &mcp23008_i2c },
|
|
{ .compatible = "microchip,mcp23017", .data = &mcp23017_i2c },
|
|
{ .compatible = "microchip,mcp23018", .data = &mcp23018_i2c },
|
|
/* NOTE: The use of the mcp prefix is deprecated and will be removed. */
|
|
{ .compatible = "mcp,mcp23008", .data = &mcp23008_i2c },
|
|
{ .compatible = "mcp,mcp23017", .data = &mcp23017_i2c },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mcp23s08_i2c_of_match);
|
|
|
|
static struct i2c_driver mcp230xx_driver = {
|
|
.driver = {
|
|
.name = "mcp230xx",
|
|
.of_match_table = mcp23s08_i2c_of_match,
|
|
},
|
|
.probe = mcp230xx_probe,
|
|
.id_table = mcp230xx_id,
|
|
};
|
|
|
|
static int __init mcp23s08_i2c_init(void)
|
|
{
|
|
return i2c_add_driver(&mcp230xx_driver);
|
|
}
|
|
|
|
/*
|
|
* Register after I²C postcore initcall and before
|
|
* subsys initcalls that may rely on these GPIOs.
|
|
*/
|
|
subsys_initcall(mcp23s08_i2c_init);
|
|
|
|
static void mcp23s08_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&mcp230xx_driver);
|
|
}
|
|
module_exit(mcp23s08_i2c_exit);
|
|
|
|
MODULE_DESCRIPTION("MCP23S08 I2C GPIO driver");
|
|
MODULE_LICENSE("GPL");
|