| Message ID | 20210524120539.3267145-2-robert.marko@sartura.hr |
|---|---|
| State | New |
| Headers | show |
| Series | [v2,1/4] mfd: simple-mfd-i2c: Add Delta TN48M CPLD support | expand |
On Mon, May 24, 2021 at 3:06 PM Robert Marko <robert.marko@sartura.hr> wrote: > > Delta TN48M CPLD is used as a GPIO expander for the SFP GPIOs. > > It is a mix of input only and output only pins. LGTM! Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: Robert Marko <robert.marko@sartura.hr> > --- > Changes in v2: > * Rewrite to use simple I2C MFD and GPIO regmap > * Drop DT bindings for pin numbering > > drivers/gpio/Kconfig | 12 ++++++ > drivers/gpio/Makefile | 1 + > drivers/gpio/gpio-tn48m.c | 89 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 102 insertions(+) > create mode 100644 drivers/gpio/gpio-tn48m.c > > diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig > index 1dd0ec6727fd..46caf72960e6 100644 > --- a/drivers/gpio/Kconfig > +++ b/drivers/gpio/Kconfig > @@ -1332,6 +1332,18 @@ config GPIO_TIMBERDALE > help > Add support for the GPIO IP in the timberdale FPGA. > > +config GPIO_TN48M_CPLD > + tristate "Delta Networks TN48M switch CPLD GPIO driver" > + depends on MFD_TN48M_CPLD > + select GPIO_REGMAP > + help > + This enables support for the GPIOs found on the Delta > + Networks TN48M switch CPLD. > + They are used for inputs and outputs on the SFP slots. > + > + This driver can also be built as a module. If so, the > + module will be called gpio-tn48m. > + > config GPIO_TPS65086 > tristate "TI TPS65086 GPO" > depends on MFD_TPS65086 > diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile > index d7c81e1611a4..07fa6419305f 100644 > --- a/drivers/gpio/Makefile > +++ b/drivers/gpio/Makefile > @@ -147,6 +147,7 @@ obj-$(CONFIG_GPIO_TEGRA186) += gpio-tegra186.o > obj-$(CONFIG_GPIO_TEGRA) += gpio-tegra.o > obj-$(CONFIG_GPIO_THUNDERX) += gpio-thunderx.o > obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o > +obj-$(CONFIG_GPIO_TN48M_CPLD) += gpio-tn48m.o > obj-$(CONFIG_GPIO_TPIC2810) += gpio-tpic2810.o > obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o > obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o > diff --git a/drivers/gpio/gpio-tn48m.c b/drivers/gpio/gpio-tn48m.c > new file mode 100644 > index 000000000000..41484c002826 > --- /dev/null > +++ b/drivers/gpio/gpio-tn48m.c > @@ -0,0 +1,89 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Delta TN48M CPLD GPIO driver > + * > + * Copyright 2021 Sartura Ltd > + * > + * Author: Robert Marko <robert.marko@sartura.hr> > + */ > + > +#include <linux/device.h> > +#include <linux/gpio/driver.h> > +#include <linux/gpio/regmap.h> > +#include <linux/kernel.h> > +#include <linux/mod_devicetable.h> > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > + > +enum tn48m_gpio_type { > + TN48M_SFP_TX_DISABLE = 1, > + TN48M_SFP_PRESENT, > + TN48M_SFP_LOS, > +}; > + > +static int tn48m_gpio_probe(struct platform_device *pdev) > +{ > + struct gpio_regmap_config config = {0}; > + enum tn48m_gpio_type type; > + struct regmap *regmap; > + u32 base; > + int ret; > + > + if (!pdev->dev.parent) > + return -ENODEV; > + > + type = (uintptr_t)device_get_match_data(&pdev->dev); > + if (!type) > + return -ENODEV; > + > + ret = device_property_read_u32(&pdev->dev, "reg", &base); > + if (ret) > + return -EINVAL; > + > + regmap = dev_get_regmap(pdev->dev.parent, NULL); > + if (!regmap) > + return -ENODEV; > + > + config.regmap = regmap; > + config.parent = &pdev->dev; > + config.ngpio = 4; > + > + switch (type) { > + case TN48M_SFP_TX_DISABLE: > + config.reg_set_base = base; > + break; > + case TN48M_SFP_PRESENT: > + config.reg_dat_base = base; > + break; > + case TN48M_SFP_LOS: > + config.reg_dat_base = base; > + break; > + default: > + dev_err(&pdev->dev, "unknown type %d\n", type); > + return -ENODEV; > + } > + > + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(&pdev->dev, &config)); > +} > + > +static const struct of_device_id tn48m_gpio_of_match[] = { > + { .compatible = "delta,tn48m-gpio-sfp-tx-disable", .data = (void *)TN48M_SFP_TX_DISABLE }, > + { .compatible = "delta,tn48m-gpio-sfp-present", .data = (void *)TN48M_SFP_PRESENT }, > + { .compatible = "delta,tn48m-gpio-sfp-los", .data = (void *)TN48M_SFP_LOS }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, tn48m_gpio_of_match); > + > +static struct platform_driver tn48m_gpio_driver = { > + .driver = { > + .name = "delta-tn48m-gpio", > + .of_match_table = tn48m_gpio_of_match, > + }, > + .probe = tn48m_gpio_probe, > +}; > +module_platform_driver(tn48m_gpio_driver); > + > +MODULE_AUTHOR("Robert Marko <robert.marko@sartura.hr>"); > +MODULE_DESCRIPTION("Delta TN48M CPLD GPIO driver"); > +MODULE_LICENSE("GPL"); > -- > 2.31.1 >
On Mon, May 24, 2021 at 2:05 PM Robert Marko <robert.marko@sartura.hr> wrote: > > Delta TN48M CPLD is used as a GPIO expander for the SFP GPIOs. > > It is a mix of input only and output only pins. > > Signed-off-by: Robert Marko <robert.marko@sartura.hr> > --- > Changes in v2: > * Rewrite to use simple I2C MFD and GPIO regmap > * Drop DT bindings for pin numbering > > drivers/gpio/Kconfig | 12 ++++++ > drivers/gpio/Makefile | 1 + > drivers/gpio/gpio-tn48m.c | 89 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 102 insertions(+) > create mode 100644 drivers/gpio/gpio-tn48m.c > > diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig > index 1dd0ec6727fd..46caf72960e6 100644 > --- a/drivers/gpio/Kconfig > +++ b/drivers/gpio/Kconfig > @@ -1332,6 +1332,18 @@ config GPIO_TIMBERDALE > help > Add support for the GPIO IP in the timberdale FPGA. > > +config GPIO_TN48M_CPLD > + tristate "Delta Networks TN48M switch CPLD GPIO driver" > + depends on MFD_TN48M_CPLD > + select GPIO_REGMAP > + help > + This enables support for the GPIOs found on the Delta > + Networks TN48M switch CPLD. > + They are used for inputs and outputs on the SFP slots. > + > + This driver can also be built as a module. If so, the > + module will be called gpio-tn48m. > + > config GPIO_TPS65086 > tristate "TI TPS65086 GPO" > depends on MFD_TPS65086 > diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile > index d7c81e1611a4..07fa6419305f 100644 > --- a/drivers/gpio/Makefile > +++ b/drivers/gpio/Makefile > @@ -147,6 +147,7 @@ obj-$(CONFIG_GPIO_TEGRA186) += gpio-tegra186.o > obj-$(CONFIG_GPIO_TEGRA) += gpio-tegra.o > obj-$(CONFIG_GPIO_THUNDERX) += gpio-thunderx.o > obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o > +obj-$(CONFIG_GPIO_TN48M_CPLD) += gpio-tn48m.o > obj-$(CONFIG_GPIO_TPIC2810) += gpio-tpic2810.o > obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o > obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o > diff --git a/drivers/gpio/gpio-tn48m.c b/drivers/gpio/gpio-tn48m.c > new file mode 100644 > index 000000000000..41484c002826 > --- /dev/null > +++ b/drivers/gpio/gpio-tn48m.c > @@ -0,0 +1,89 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Delta TN48M CPLD GPIO driver > + * > + * Copyright 2021 Sartura Ltd > + * > + * Author: Robert Marko <robert.marko@sartura.hr> > + */ > + > +#include <linux/device.h> > +#include <linux/gpio/driver.h> > +#include <linux/gpio/regmap.h> > +#include <linux/kernel.h> > +#include <linux/mod_devicetable.h> > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > + > +enum tn48m_gpio_type { > + TN48M_SFP_TX_DISABLE = 1, > + TN48M_SFP_PRESENT, > + TN48M_SFP_LOS, > +}; > + > +static int tn48m_gpio_probe(struct platform_device *pdev) > +{ > + struct gpio_regmap_config config = {0}; > + enum tn48m_gpio_type type; > + struct regmap *regmap; > + u32 base; > + int ret; > + > + if (!pdev->dev.parent) > + return -ENODEV; > + > + type = (uintptr_t)device_get_match_data(&pdev->dev); > + if (!type) > + return -ENODEV; > + > + ret = device_property_read_u32(&pdev->dev, "reg", &base); > + if (ret) > + return -EINVAL; > + > + regmap = dev_get_regmap(pdev->dev.parent, NULL); > + if (!regmap) > + return -ENODEV; > + > + config.regmap = regmap; > + config.parent = &pdev->dev; > + config.ngpio = 4; > + > + switch (type) { > + case TN48M_SFP_TX_DISABLE: > + config.reg_set_base = base; > + break; > + case TN48M_SFP_PRESENT: > + config.reg_dat_base = base; > + break; > + case TN48M_SFP_LOS: > + config.reg_dat_base = base; > + break; > + default: > + dev_err(&pdev->dev, "unknown type %d\n", type); > + return -ENODEV; > + } > + > + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(&pdev->dev, &config)); > +} > + > +static const struct of_device_id tn48m_gpio_of_match[] = { > + { .compatible = "delta,tn48m-gpio-sfp-tx-disable", .data = (void *)TN48M_SFP_TX_DISABLE }, > + { .compatible = "delta,tn48m-gpio-sfp-present", .data = (void *)TN48M_SFP_PRESENT }, > + { .compatible = "delta,tn48m-gpio-sfp-los", .data = (void *)TN48M_SFP_LOS }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, tn48m_gpio_of_match); > + > +static struct platform_driver tn48m_gpio_driver = { > + .driver = { > + .name = "delta-tn48m-gpio", > + .of_match_table = tn48m_gpio_of_match, > + }, > + .probe = tn48m_gpio_probe, > +}; > +module_platform_driver(tn48m_gpio_driver); > + > +MODULE_AUTHOR("Robert Marko <robert.marko@sartura.hr>"); > +MODULE_DESCRIPTION("Delta TN48M CPLD GPIO driver"); > +MODULE_LICENSE("GPL"); > -- > 2.31.1 > Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> I guess this will go through the MFD tree? Bart
On Mon, May 24, 2021 at 2:05 PM Robert Marko <robert.marko@sartura.hr> wrote: > Delta TN48M CPLD is used as a GPIO expander for the SFP GPIOs. > > It is a mix of input only and output only pins. > > Signed-off-by: Robert Marko <robert.marko@sartura.hr> Looks really good! Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 1dd0ec6727fd..46caf72960e6 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1332,6 +1332,18 @@ config GPIO_TIMBERDALE help Add support for the GPIO IP in the timberdale FPGA. +config GPIO_TN48M_CPLD + tristate "Delta Networks TN48M switch CPLD GPIO driver" + depends on MFD_TN48M_CPLD + select GPIO_REGMAP + help + This enables support for the GPIOs found on the Delta + Networks TN48M switch CPLD. + They are used for inputs and outputs on the SFP slots. + + This driver can also be built as a module. If so, the + module will be called gpio-tn48m. + config GPIO_TPS65086 tristate "TI TPS65086 GPO" depends on MFD_TPS65086 diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index d7c81e1611a4..07fa6419305f 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -147,6 +147,7 @@ obj-$(CONFIG_GPIO_TEGRA186) += gpio-tegra186.o obj-$(CONFIG_GPIO_TEGRA) += gpio-tegra.o obj-$(CONFIG_GPIO_THUNDERX) += gpio-thunderx.o obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o +obj-$(CONFIG_GPIO_TN48M_CPLD) += gpio-tn48m.o obj-$(CONFIG_GPIO_TPIC2810) += gpio-tpic2810.o obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o diff --git a/drivers/gpio/gpio-tn48m.c b/drivers/gpio/gpio-tn48m.c new file mode 100644 index 000000000000..41484c002826 --- /dev/null +++ b/drivers/gpio/gpio-tn48m.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Delta TN48M CPLD GPIO driver + * + * Copyright 2021 Sartura Ltd + * + * Author: Robert Marko <robert.marko@sartura.hr> + */ + +#include <linux/device.h> +#include <linux/gpio/driver.h> +#include <linux/gpio/regmap.h> +#include <linux/kernel.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +enum tn48m_gpio_type { + TN48M_SFP_TX_DISABLE = 1, + TN48M_SFP_PRESENT, + TN48M_SFP_LOS, +}; + +static int tn48m_gpio_probe(struct platform_device *pdev) +{ + struct gpio_regmap_config config = {0}; + enum tn48m_gpio_type type; + struct regmap *regmap; + u32 base; + int ret; + + if (!pdev->dev.parent) + return -ENODEV; + + type = (uintptr_t)device_get_match_data(&pdev->dev); + if (!type) + return -ENODEV; + + ret = device_property_read_u32(&pdev->dev, "reg", &base); + if (ret) + return -EINVAL; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) + return -ENODEV; + + config.regmap = regmap; + config.parent = &pdev->dev; + config.ngpio = 4; + + switch (type) { + case TN48M_SFP_TX_DISABLE: + config.reg_set_base = base; + break; + case TN48M_SFP_PRESENT: + config.reg_dat_base = base; + break; + case TN48M_SFP_LOS: + config.reg_dat_base = base; + break; + default: + dev_err(&pdev->dev, "unknown type %d\n", type); + return -ENODEV; + } + + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(&pdev->dev, &config)); +} + +static const struct of_device_id tn48m_gpio_of_match[] = { + { .compatible = "delta,tn48m-gpio-sfp-tx-disable", .data = (void *)TN48M_SFP_TX_DISABLE }, + { .compatible = "delta,tn48m-gpio-sfp-present", .data = (void *)TN48M_SFP_PRESENT }, + { .compatible = "delta,tn48m-gpio-sfp-los", .data = (void *)TN48M_SFP_LOS }, + { } +}; +MODULE_DEVICE_TABLE(of, tn48m_gpio_of_match); + +static struct platform_driver tn48m_gpio_driver = { + .driver = { + .name = "delta-tn48m-gpio", + .of_match_table = tn48m_gpio_of_match, + }, + .probe = tn48m_gpio_probe, +}; +module_platform_driver(tn48m_gpio_driver); + +MODULE_AUTHOR("Robert Marko <robert.marko@sartura.hr>"); +MODULE_DESCRIPTION("Delta TN48M CPLD GPIO driver"); +MODULE_LICENSE("GPL");
Delta TN48M CPLD is used as a GPIO expander for the SFP GPIOs. It is a mix of input only and output only pins. Signed-off-by: Robert Marko <robert.marko@sartura.hr> --- Changes in v2: * Rewrite to use simple I2C MFD and GPIO regmap * Drop DT bindings for pin numbering drivers/gpio/Kconfig | 12 ++++++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tn48m.c | 89 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 drivers/gpio/gpio-tn48m.c