On Mon, Oct 19, 2020 at 11:10:04PM +0900, Daniel Palmer wrote: > Header adds defines for the gpio number of each pin > from the driver view. The gpio block seems to support 128 lines > but what line is mapped to a physical pin depends on the chip. > The driver itself uses the index of a pin's offset in an array > of the possible offsets for a chip as the gpio number. > > The defines remove the need to work out that index to consume > a pin in the device tree. I'd expect the DT to have 0-127 numbering... If you need to map that to another number, then an array property in DT could handle that. > > Signed-off-by: Daniel Palmer <daniel@xxxxxxxx> > --- > MAINTAINERS | 1 + > include/dt-bindings/gpio/msc313-gpio.h | 95 ++++++++++++++++++++++++++ > 2 files changed, 96 insertions(+) > create mode 100644 include/dt-bindings/gpio/msc313-gpio.h > > diff --git a/MAINTAINERS b/MAINTAINERS > index 3f345f36c22c..a188fae8c04e 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -2132,6 +2132,7 @@ W: http://linux-chenxing.org/ > F: Documentation/devicetree/bindings/arm/mstar/* > F: arch/arm/boot/dts/mstar-* > F: arch/arm/mach-mstar/ > +F: include/dt-bindings/gpio/msc313-gpio.h > > ARM/NEC MOBILEPRO 900/c MACHINE SUPPORT > M: Michael Petchkovsky <mkpetch@xxxxxxxxxxxxxxxx> > diff --git a/include/dt-bindings/gpio/msc313-gpio.h b/include/dt-bindings/gpio/msc313-gpio.h > new file mode 100644 > index 000000000000..9b8cd6ffb7c4 > --- /dev/null > +++ b/include/dt-bindings/gpio/msc313-gpio.h > @@ -0,0 +1,95 @@ > +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */ > +/* > + * GPIO definitions for MStar/SigmaStar MSC313 and later SoCs > + * > + * Copyright (C) 2020 Daniel Palmer <daniel@xxxxxxxxx> > + */ > + > +#ifndef _DT_BINDINGS_MSC313_GPIO_H > +#define _DT_BINDINGS_MSC313_GPIO_H > + > +/* pin names for fuart, same for all SoCs so far */ > +#define MSC313_PINNAME_FUART_RX "fuart_rx" > +#define MSC313_PINNAME_FUART_TX "fuart_tx" > +#define MSC313_PINNAME_FUART_CTS "fuart_cts" > +#define MSC313_PINNAME_FUART_RTS "fuart_rts" Defines for strings serves no purpose. > + > +/* pin names for sr, mercury5 is different */ > +#define MSC313_PINNAME_SR_IO2 "sr_io2" > +#define MSC313_PINNAME_SR_IO3 "sr_io3" > +#define MSC313_PINNAME_SR_IO4 "sr_io4" > +#define MSC313_PINNAME_SR_IO5 "sr_io5" > +#define MSC313_PINNAME_SR_IO6 "sr_io6" > +#define MSC313_PINNAME_SR_IO7 "sr_io7" > +#define MSC313_PINNAME_SR_IO8 "sr_io8" > +#define MSC313_PINNAME_SR_IO9 "sr_io9" > +#define MSC313_PINNAME_SR_IO10 "sr_io10" > +#define MSC313_PINNAME_SR_IO11 "sr_io11" > +#define MSC313_PINNAME_SR_IO12 "sr_io12" > +#define MSC313_PINNAME_SR_IO13 "sr_io13" > +#define MSC313_PINNAME_SR_IO14 "sr_io14" > +#define MSC313_PINNAME_SR_IO15 "sr_io15" > +#define MSC313_PINNAME_SR_IO16 "sr_io16" > +#define MSC313_PINNAME_SR_IO17 "sr_io17" > + > +/* pin names for sd, same for all SoCs so far */ > +#define MSC313_PINNAME_SD_CLK "sd_clk" > +#define MSC313_PINNAME_SD_CMD "sd_cmd" > +#define MSC313_PINNAME_SD_D0 "sd_d0" > +#define MSC313_PINNAME_SD_D1 "sd_d1" > +#define MSC313_PINNAME_SD_D2 "sd_d2" > +#define MSC313_PINNAME_SD_D3 "sd_d3" > + > +/* pin names for i2c1, same for all SoCs so for */ > +#define MSC313_PINNAME_I2C1_SCL "i2c1_scl" > +#define MSC313_PINNAME_I2C1_SCA "i2c1_sda" > + > +/* pin names for spi0, same for all SoCs so far */ > +#define MSC313_PINNAME_SPI0_CZ "spi0_cz" > +#define MSC313_PINNAME_SPI0_CK "spi0_ck" > +#define MSC313_PINNAME_SPI0_DI "spi0_di" > +#define MSC313_PINNAME_SPI0_DO "spi0_do" > + > +#define MSC313_GPIO_FUART 0 > +#define MSC313_GPIO_FUART_RX (MSC313_GPIO_FUART + 0) > +#define MSC313_GPIO_FUART_TX (MSC313_GPIO_FUART + 1) > +#define MSC313_GPIO_FUART_CTS (MSC313_GPIO_FUART + 2) > +#define MSC313_GPIO_FUART_RTS (MSC313_GPIO_FUART + 3) We don't normally have defines for GPIO numbers either. > + > +#define MSC313_GPIO_SR (MSC313_GPIO_FUART_RTS + 1) > +#define MSC313_GPIO_SR_IO2 (MSC313_GPIO_SR + 0) > +#define MSC313_GPIO_SR_IO3 (MSC313_GPIO_SR + 1) > +#define MSC313_GPIO_SR_IO4 (MSC313_GPIO_SR + 2) > +#define MSC313_GPIO_SR_IO5 (MSC313_GPIO_SR + 3) > +#define MSC313_GPIO_SR_IO6 (MSC313_GPIO_SR + 4) > +#define MSC313_GPIO_SR_IO7 (MSC313_GPIO_SR + 5) > +#define MSC313_GPIO_SR_IO8 (MSC313_GPIO_SR + 6) > +#define MSC313_GPIO_SR_IO9 (MSC313_GPIO_SR + 7) > +#define MSC313_GPIO_SR_IO10 (MSC313_GPIO_SR + 8) > +#define MSC313_GPIO_SR_IO11 (MSC313_GPIO_SR + 9) > +#define MSC313_GPIO_SR_IO12 (MSC313_GPIO_SR + 10) > +#define MSC313_GPIO_SR_IO13 (MSC313_GPIO_SR + 11) > +#define MSC313_GPIO_SR_IO14 (MSC313_GPIO_SR + 12) > +#define MSC313_GPIO_SR_IO15 (MSC313_GPIO_SR + 13) > +#define MSC313_GPIO_SR_IO16 (MSC313_GPIO_SR + 14) > +#define MSC313_GPIO_SR_IO17 (MSC313_GPIO_SR + 15) > + > +#define MSC313_GPIO_SD (MSC313_GPIO_SR_IO17 + 1) > +#define MSC313_GPIO_SD_CLK (MSC313_GPIO_SD + 0) > +#define MSC313_GPIO_SD_CMD (MSC313_GPIO_SD + 1) > +#define MSC313_GPIO_SD_D0 (MSC313_GPIO_SD + 2) > +#define MSC313_GPIO_SD_D1 (MSC313_GPIO_SD + 3) > +#define MSC313_GPIO_SD_D2 (MSC313_GPIO_SD + 4) > +#define MSC313_GPIO_SD_D3 (MSC313_GPIO_SD + 5) > + > +#define MSC313_GPIO_I2C1 (MSC313_GPIO_SD_D3 + 1) > +#define MSC313_GPIO_I2C1_SCL (MSC313_GPIO_I2C1 + 0) > +#define MSC313_GPIO_I2C1_SDA (MSC313_GPIO_I2C1 + 1) > + > +#define MSC313_GPIO_SPI0 (MSC313_GPIO_I2C1_SDA + 1) > +#define MSC313_GPIO_SPI0_CZ (MSC313_GPIO_SPI0 + 0) > +#define MSC313_GPIO_SPI0_CK (MSC313_GPIO_SPI0 + 1) > +#define MSC313_GPIO_SPI0_DI (MSC313_GPIO_SPI0 + 2) > +#define MSC313_GPIO_SPI0_DO (MSC313_GPIO_SPI0 + 3) > + > +#endif /* _DT_BINDINGS_MSC313_GPIO_H */ > -- > 2.28.0 >
