forked from Minki/linux
[ARM] S3C: Add new GPIO configuration calls
Add new GPIO configuration calls that mesh with the new gpiolib support. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks
parent
89d043c3db
commit
21b23664b9
34
arch/arm/mach-s3c2410/include/mach/gpio-core.h
Normal file
34
arch/arm/mach-s3c2410/include/mach/gpio-core.h
Normal file
@ -0,0 +1,34 @@
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/* arch/arm/mach-s3c24100/include/mach/gpio-core.h
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*
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* S3C2410 - GPIO core support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_GPIO_CORE_H
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#define __ASM_ARCH_GPIO_CORE_H __FILE__
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#include <plat/gpio-core.h>
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#include <mach/regs-gpio.h>
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extern struct s3c_gpio_chip s3c24xx_gpios[];
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static inline struct s3c_gpio_chip *s3c_gpiolib_getchip(unsigned int pin)
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{
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struct s3c_gpio_chip *chip;
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if (pin > S3C2410_GPG10)
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return NULL;
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chip = &s3c24xx_gpios[pin/32];
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return (S3C2410_GPIO_OFFSET(pin) > chip->chip.ngpio) ? chip : NULL;
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}
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#endif /* __ASM_ARCH_GPIO_CORE_H */
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21
arch/arm/mach-s3c6400/include/mach/gpio-core.h
Normal file
21
arch/arm/mach-s3c6400/include/mach/gpio-core.h
Normal file
@ -0,0 +1,21 @@
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/* arch/arm/mach-s3c6400/include/mach/gpio-core.h
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*
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* S3C64XX - GPIO core support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_GPIO_CORE_H
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#define __ASM_ARCH_GPIO_CORE_H __FILE__
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/* currently we just include the platform support */
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#include <plat/gpio-core.h>
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#endif /* __ASM_ARCH_GPIO_CORE_H */
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@ -120,6 +120,33 @@ config S3C_GPIO_TRACK
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Internal configuration option to enable the s3c specific gpio
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chip tracking if the platform requires it.
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config S3C_GPIO_PULL_UPDOWN
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bool
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help
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Internal configuration to enable the correct GPIO pull helper
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config S3C_GPIO_PULL_DOWN
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bool
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help
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Internal configuration to enable the correct GPIO pull helper
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config S3C_GPIO_PULL_UP
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bool
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help
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Internal configuration to enable the correct GPIO pull helper
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config S3C_GPIO_CFG_S3C24XX
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bool
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help
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Internal configuration to enable S3C24XX style GPIO configuration
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functions.
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config S3C_GPIO_CFG_S3C64XX
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bool
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help
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Internal configuration to enable S3C64XX style GPIO configuration
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functions.
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# device definitions to compile in
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config S3C_DEV_HSMMC
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@ -16,6 +16,7 @@ obj-y += time.o
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obj-y += clock.o
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obj-y += pwm-clock.o
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obj-y += gpio.o
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obj-y += gpio-config.o
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# devices
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163
arch/arm/plat-s3c/gpio-config.c
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163
arch/arm/plat-s3c/gpio-config.c
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@ -0,0 +1,163 @@
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/* linux/arch/arm/plat-s3c/gpio-config.c
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*
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* S3C series GPIO configuration core
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <mach/gpio-core.h>
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#include <plat/gpio-cfg.h>
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#include <plat/gpio-cfg-helpers.h>
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int s3c_gpio_cfgpin(unsigned int pin, unsigned int config)
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{
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struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
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unsigned long flags;
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int offset;
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int ret;
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if (!chip)
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return -EINVAL;
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offset = pin - chip->chip.base;
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local_irq_save(flags);
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ret = s3c_gpio_do_setcfg(chip, offset, config);
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local_irq_restore(flags);
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return ret;
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}
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int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull)
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{
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struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
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unsigned long flags;
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int offset, ret;
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if (!chip)
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return -EINVAL;
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offset = pin - chip->chip.base;
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local_irq_save(flags);
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ret = s3c_gpio_do_setpull(chip, offset, pull);
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local_irq_restore(flags);
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return ret;
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}
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#ifdef CONFIG_S3C_GPIO_CFG_S3C24XX
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int s3c_gpio_setcfg_s3c24xx_banka(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg)
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{
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void __iomem *reg = chip->base;
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unsigned int shift = off;
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u32 con;
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if (s3c_gpio_is_cfg_special(cfg)) {
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cfg &= 0xf;
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/* Map output to 0, and SFN2 to 1 */
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cfg -= 1;
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if (cfg > 1)
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return -EINVAL;
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cfg <<= shift;
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}
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con = __raw_readl(reg);
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con &= ~(0x1 << shift);
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con |= cfg;
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__raw_writel(con, reg);
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return 0;
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}
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int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg)
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{
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void __iomem *reg = chip->base;
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unsigned int shift = off * 2;
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u32 con;
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if (s3c_gpio_is_cfg_special(cfg)) {
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cfg &= 0xf;
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if (cfg > 3)
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return -EINVAL;
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cfg <<= shift;
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}
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con = __raw_readl(reg);
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con &= ~(0x3 << shift);
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con |= cfg;
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__raw_writel(con, reg);
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return 0;
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}
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#endif
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#ifdef CONFIG_S3C_GPIO_CFG_S3C64XX
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int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg)
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{
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void __iomem *reg = chip->base;
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unsigned int shift = (off & 7) * 4;
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u32 con;
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if (off < 8 && chip->chip.ngpio >= 8)
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reg -= 4;
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if (s3c_gpio_is_cfg_special(cfg)) {
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cfg &= 0xf;
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cfg <<= shift;
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}
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con = __raw_readl(reg);
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con &= ~(0xf << shift);
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con |= cfg;
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__raw_writel(con, reg);
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return 0;
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}
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#endif /* CONFIG_S3C_GPIO_CFG_S3C64XX */
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#ifdef CONFIG_S3C_GPIO_PULL_UPDOWN
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int s3c_gpio_setpull_updown(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull)
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{
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void __iomem *reg = chip->base + 0x08;
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int shift = off * 2;
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u32 pup;
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pup = __raw_readl(reg);
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pup &= ~(3 << shift);
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pup |= pull << shift;
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__raw_writel(pup, reg);
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return 0;
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}
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s3c_gpio_pull_t s3c_gpio_getpull_updown(struct s3c_gpio_chip *chip,
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unsigned int off)
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{
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void __iomem *reg = chip->base + 0x08;
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int shift = off * 2;
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u32 pup = __raw_readl(reg);
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pup >>= shift;
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pup &= 0x3;
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return (__force s3c_gpio_pull_t)pup;
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}
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#endif
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176
arch/arm/plat-s3c/include/plat/gpio-cfg-helpers.h
Normal file
176
arch/arm/plat-s3c/include/plat/gpio-cfg-helpers.h
Normal file
@ -0,0 +1,176 @@
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/* linux/arch/arm/plat-s3c/include/plat/gpio-cfg-helper.h
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*
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* Copyright 2008 Openmoko, Inc.
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* Copyright 2008 Simtec Electronics
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* http://armlinux.simtec.co.uk/
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C Platform - GPIO pin configuration helper definitions
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* This is meant for core cpu support, machine or other driver files
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* should not be including this header.
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*/
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#ifndef __PLAT_GPIO_CFG_HELPERS_H
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#define __PLAT_GPIO_CFG_HELPERS_H __FILE__
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/* As a note, all gpio configuration functions are entered exclusively, either
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* with the relevant lock held or the system prevented from doing anything else
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* by disabling interrupts.
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*/
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static inline int s3c_gpio_do_setcfg(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int config)
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{
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return (chip->config->set_config)(chip, off, config);
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}
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static inline int s3c_gpio_do_setpull(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull)
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{
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return (chip->config->set_pull)(chip, off, pull);
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}
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/**
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* s3c_gpio_setcfg_s3c24xx - S3C24XX style GPIO configuration.
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @cfg: The configuration value to set.
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*
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* This helper deal with the GPIO cases where the control register
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* has two bits of configuration per gpio, which have the following
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* functions:
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* 00 = input
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* 01 = output
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* 1x = special function
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*/
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extern int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg);
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/**
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* s3c_gpio_setcfg_s3c24xx_a - S3C24XX style GPIO configuration (Bank A)
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @cfg: The configuration value to set.
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*
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* This helper deal with the GPIO cases where the control register
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* has one bit of configuration for the gpio, where setting the bit
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* means the pin is in special function mode and unset means output.
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*/
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extern int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg);
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/**
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* s3c_gpio_setcfg_s3c64xx_4bit - S3C64XX 4bit single register GPIO config.
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @cfg: The configuration value to set.
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*
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* This helper deal with the GPIO cases where the control register has 4 bits
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* of control per GPIO, generally in the form of:
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* 0000 = Input
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* 0001 = Output
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* others = Special functions (dependant on bank)
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*
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* Note, since the code to deal with the case where there are two control
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* registers instead of one, we do not have a seperate set of functions for
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* each case.
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*/
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extern int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
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unsigned int off, unsigned int cfg);
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/* Pull-{up,down} resistor controls.
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*
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* S3C2410,S3C2440,S3C24A0 = Pull-UP,
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* S3C2412,S3C2413 = Pull-Down
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* S3C6400,S3C6410 = Pull-Both [None,Down,Up,Undef]
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* S3C2443 = Pull-Both [not same as S3C6400]
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*/
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/**
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* s3c_gpio_setpull_1up() - Pull configuration for choice of up or none.
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @param: pull: The pull mode being requested.
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*
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* This is a helper function for the case where we have GPIOs with one
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* bit configuring the presence of a pull-up resistor.
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*/
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extern int s3c_gpio_setpull_1up(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull);
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/**
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* s3c_gpio_setpull_1down() - Pull configuration for choice of down or none
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* @chip: The gpio chip that is being configured
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* @off: The offset for the GPIO being configured
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* @param: pull: The pull mode being requested
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*
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* This is a helper function for the case where we have GPIOs with one
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* bit configuring the presence of a pull-down resistor.
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*/
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extern int s3c_gpio_setpull_1down(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull);
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/**
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* s3c_gpio_setpull_upown() - Pull configuration for choice of up, down or none
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @param: pull: The pull mode being requested.
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*
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* This is a helper function for the case where we have GPIOs with two
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* bits configuring the presence of a pull resistor, in the following
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* order:
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* 00 = No pull resistor connected
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* 01 = Pull-up resistor connected
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* 10 = Pull-down resistor connected
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*/
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extern int s3c_gpio_setpull_updown(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull);
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/**
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* s3c_gpio_getpull_updown() - Get configuration for choice of up, down or none
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* @chip: The gpio chip that the GPIO pin belongs to
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* @off: The offset to the pin to get the configuration of.
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*
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* This helper function reads the state of the pull-{up,down} resistor for the
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* given GPIO in the same case as s3c_gpio_setpull_upown.
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*/
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extern s3c_gpio_pull_t s3c_gpio_getpull_updown(struct s3c_gpio_chip *chip,
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unsigned int off);
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/**
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* s3c_gpio_setpull_s3c2443() - Pull configuration for s3c2443.
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* @chip: The gpio chip that is being configured.
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* @off: The offset for the GPIO being configured.
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* @param: pull: The pull mode being requested.
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*
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* This is a helper function for the case where we have GPIOs with two
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* bits configuring the presence of a pull resistor, in the following
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* order:
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* 00 = Pull-up resistor connected
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* 10 = Pull-down resistor connected
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* x1 = No pull up resistor
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*/
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extern int s3c_gpio_setpull_s3c2443(struct s3c_gpio_chip *chip,
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unsigned int off, s3c_gpio_pull_t pull);
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/**
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* s3c_gpio_getpull_s3c2443() - Get configuration for s3c2443 pull resistors
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* @chip: The gpio chip that the GPIO pin belongs to.
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* @off: The offset to the pin to get the configuration of.
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*
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* This helper function reads the state of the pull-{up,down} resistor for the
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* given GPIO in the same case as s3c_gpio_setpull_upown.
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*/
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extern s3c_gpio_pull_t s3c_gpio_getpull_s3c24xx(struct s3c_gpio_chip *chip,
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unsigned int off);
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#endif /* __PLAT_GPIO_CFG_HELPERS_H */
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110
arch/arm/plat-s3c/include/plat/gpio-cfg.h
Normal file
110
arch/arm/plat-s3c/include/plat/gpio-cfg.h
Normal file
@ -0,0 +1,110 @@
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/* linux/arch/arm/plat-s3c/include/plat/gpio-cfg.h
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*
|
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* Copyright 2008 Openmoko, Inc.
|
||||
* Copyright 2008 Simtec Electronics
|
||||
* http://armlinux.simtec.co.uk/
|
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* Ben Dooks <ben@simtec.co.uk>
|
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*
|
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* S3C Platform - GPIO pin configuration
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
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|
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/* This file contains the necessary definitions to get the basic gpio
|
||||
* pin configuration done such as setting a pin to input or output or
|
||||
* changing the pull-{up,down} configurations.
|
||||
*/
|
||||
|
||||
/* Note, this interface is being added to the s3c64xx arch first and will
|
||||
* be added to the s3c24xx systems later.
|
||||
*/
|
||||
|
||||
#ifndef __PLAT_GPIO_CFG_H
|
||||
#define __PLAT_GPIO_CFG_H __FILE__
|
||||
|
||||
typedef unsigned int __bitwise__ s3c_gpio_pull_t;
|
||||
|
||||
/* forward declaration if gpio-core.h hasn't been included */
|
||||
struct s3c_gpio_chip;
|
||||
|
||||
/**
|
||||
* struct s3c_gpio_cfg GPIO configuration
|
||||
* @cfg_eint: Configuration setting when used for external interrupt source
|
||||
* @get_pull: Read the current pull configuration for the GPIO
|
||||
* @set_pull: Set the current pull configuraiton for the GPIO
|
||||
* @set_config: Set the current configuration for the GPIO
|
||||
* @get_config: Read the current configuration for the GPIO
|
||||
*
|
||||
* Each chip can have more than one type of GPIO bank available and some
|
||||
* have different capabilites even when they have the same control register
|
||||
* layouts. Provide an point to vector control routine and provide any
|
||||
* per-bank configuration information that other systems such as the
|
||||
* external interrupt code will need.
|
||||
*/
|
||||
struct s3c_gpio_cfg {
|
||||
unsigned int cfg_eint;
|
||||
|
||||
s3c_gpio_pull_t (*get_pull)(struct s3c_gpio_chip *chip, unsigned offs);
|
||||
int (*set_pull)(struct s3c_gpio_chip *chip, unsigned offs,
|
||||
s3c_gpio_pull_t pull);
|
||||
|
||||
unsigned (*get_config)(struct s3c_gpio_chip *chip, unsigned offs);
|
||||
int (*set_config)(struct s3c_gpio_chip *chip, unsigned offs,
|
||||
unsigned config);
|
||||
};
|
||||
|
||||
#define S3C_GPIO_SPECIAL_MARK (0xfffffff0)
|
||||
#define S3C_GPIO_SPECIAL(x) (S3C_GPIO_SPECIAL_MARK | (x))
|
||||
|
||||
/* Defines for generic pin configurations */
|
||||
#define S3C_GPIO_INPUT (S3C_GPIO_SPECIAL(0))
|
||||
#define S3C_GPIO_OUTPUT (S3C_GPIO_SPECIAL(1))
|
||||
#define S3C_GPIO_SFN(x) (S3C_GPIO_SPECIAL(x))
|
||||
|
||||
#define s3c_gpio_is_cfg_special(_cfg) \
|
||||
(((_cfg) & S3C_GPIO_SPECIAL_MARK) == S3C_GPIO_SPECIAL_MARK)
|
||||
|
||||
/**
|
||||
* s3c_gpio_cfgpin() - Change the GPIO function of a pin.
|
||||
* @pin pin The pin number to configure.
|
||||
* @pin to The configuration for the pin's function.
|
||||
*
|
||||
* Configure which function is actually connected to the external
|
||||
* pin, such as an gpio input, output or some form of special function
|
||||
* connected to an internal peripheral block.
|
||||
*/
|
||||
extern int s3c_gpio_cfgpin(unsigned int pin, unsigned int to);
|
||||
|
||||
/* Define values for the pull-{up,down} available for each gpio pin.
|
||||
*
|
||||
* These values control the state of the weak pull-{up,down} resistors
|
||||
* available on most pins on the S3C series. Not all chips support both
|
||||
* up or down settings, and it may be dependant on the chip that is being
|
||||
* used to whether the particular mode is available.
|
||||
*/
|
||||
#define S3C_GPIO_PULL_NONE ((__force s3c_gpio_pull_t)0x00)
|
||||
#define S3C_GPIO_PULL_DOWN ((__force s3c_gpio_pull_t)0x01)
|
||||
#define S3C_GPIO_PULL_UP ((__force s3c_gpio_pull_t)0x02)
|
||||
|
||||
/**
|
||||
* s3c_gpio_setpull() - set the state of a gpio pin pull resistor
|
||||
* @pin: The pin number to configure the pull resistor.
|
||||
* @pull: The configuration for the pull resistor.
|
||||
*
|
||||
* This function sets the state of the pull-{up,down} resistor for the
|
||||
* specified pin. It will return 0 if successfull, or a negative error
|
||||
* code if the pin cannot support the requested pull setting.
|
||||
*/
|
||||
extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull);
|
||||
|
||||
/**
|
||||
* s3c_gpio_getpull() - get the pull resistor state of a gpio pin
|
||||
* @pin: The pin number to get the settings for
|
||||
*
|
||||
* Read the pull resistor value for the specified pin.
|
||||
*/
|
||||
extern s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin);
|
||||
|
||||
#endif /* __PLAT_GPIO_CFG_H */
|
||||
@ -20,16 +20,20 @@
|
||||
* specific code.
|
||||
*/
|
||||
|
||||
struct s3c_gpio_cfg;
|
||||
|
||||
/**
|
||||
* struct s3c_gpio_chip - wrapper for specific implementation of gpio
|
||||
* @chip: The chip structure to be exported via gpiolib.
|
||||
* @base: The base pointer to the gpio configuration registers.
|
||||
* @config: special function and pull-resistor control information.
|
||||
*
|
||||
* This wrapper provides the necessary information for the Samsung
|
||||
* specific gpios being registered with gpiolib.
|
||||
*/
|
||||
struct s3c_gpio_chip {
|
||||
struct gpio_chip chip;
|
||||
struct s3c_gpio_cfg *config;
|
||||
void __iomem *base;
|
||||
};
|
||||
|
||||
@ -48,7 +52,6 @@ static inline struct s3c_gpio_chip *to_s3c_gpio(struct gpio_chip *gpc)
|
||||
*/
|
||||
extern void s3c_gpiolib_add(struct s3c_gpio_chip *chip);
|
||||
|
||||
|
||||
/* CONFIG_S3C_GPIO_TRACK enables the tracking of the s3c specific gpios
|
||||
* for use with the configuration calls, and other parts of the s3c gpiolib
|
||||
* support code.
|
||||
@ -65,8 +68,10 @@ extern struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
|
||||
|
||||
static inline struct s3c_gpio_chip *s3c_gpiolib_getchip(unsigned int chip)
|
||||
{
|
||||
return s3c_gpios[chip];
|
||||
return (chip < S3C_GPIO_END) ? s3c_gpios[chip] : NULL;
|
||||
}
|
||||
#else
|
||||
/* machine specific code should provide s3c_gpiolib_getchip */
|
||||
|
||||
static inline void s3c_gpiolib_track(struct s3c_gpio_chip *chip) { }
|
||||
#endif
|
||||
|
||||
@ -59,7 +59,7 @@ static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct s3c_gpio_chip gpios[] = {
|
||||
struct s3c_gpio_chip s3c24xx_gpios[] = {
|
||||
[0] = {
|
||||
.base = S3C24XX_GPIO_BASE(S3C2410_GPA0),
|
||||
.chip = {
|
||||
@ -129,10 +129,10 @@ static struct s3c_gpio_chip gpios[] = {
|
||||
|
||||
static __init int s3c24xx_gpiolib_init(void)
|
||||
{
|
||||
struct s3c_gpio_chip *chip = gpios;
|
||||
struct s3c_gpio_chip *chip = s3c24xx_gpios;
|
||||
int gpn;
|
||||
|
||||
for (gpn = 0; gpn < ARRAY_SIZE(gpios); gpn++, chip++)
|
||||
for (gpn = 0; gpn < ARRAY_SIZE(s3c24xx_gpios); gpn++, chip++)
|
||||
s3c_gpiolib_add(chip);
|
||||
|
||||
return 0;
|
||||
|
||||
@ -15,6 +15,9 @@ config PLAT_S3C64XX
|
||||
select NO_IOPORT
|
||||
select ARCH_REQUIRE_GPIOLIB
|
||||
select S3C_GPIO_TRACK
|
||||
select S3C_GPIO_PULL_UPDOWN
|
||||
select S3C_GPIO_CFG_S3C24XX
|
||||
select S3C_GPIO_CFG_S3C64XX
|
||||
help
|
||||
Base platform code for any Samsung S3C64XX device
|
||||
|
||||
|
||||
@ -18,8 +18,10 @@
|
||||
|
||||
#include <mach/map.h>
|
||||
#include <mach/gpio.h>
|
||||
#include <mach/gpio-core.h>
|
||||
|
||||
#include <plat/gpio-core.h>
|
||||
#include <plat/gpio-cfg.h>
|
||||
#include <plat/gpio-cfg-helpers.h>
|
||||
#include <plat/regs-gpio.h>
|
||||
|
||||
/* GPIO bank summary:
|
||||
@ -52,6 +54,12 @@
|
||||
|
||||
#define con_4bit_shift(__off) ((__off) * 4)
|
||||
|
||||
#if 1
|
||||
#define gpio_dbg(x...) do { } while(0)
|
||||
#else
|
||||
#define gpio_dbg(x...) printk(KERN_DEBUG ## x)
|
||||
#endif
|
||||
|
||||
/* The s3c64xx_gpiolib_4bit routines are to control the gpio banks where
|
||||
* the gpio configuration register (GPxCON) has 4 bits per GPIO, as the
|
||||
* following example:
|
||||
@ -77,6 +85,8 @@ static int s3c64xx_gpiolib_4bit_input(struct gpio_chip *chip, unsigned offset)
|
||||
con &= ~(0xf << con_4bit_shift(offset));
|
||||
__raw_writel(con, base + OFF_GPCON);
|
||||
|
||||
gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -102,6 +112,8 @@ static int s3c64xx_gpiolib_4bit_output(struct gpio_chip *chip,
|
||||
__raw_writel(con, base + OFF_GPCON);
|
||||
__raw_writel(dat, base + OFF_GPDAT);
|
||||
|
||||
gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -142,6 +154,8 @@ static int s3c64xx_gpiolib_4bit2_input(struct gpio_chip *chip, unsigned offset)
|
||||
con &= ~(0xf << con_4bit_shift(offset));
|
||||
__raw_writel(con, regcon);
|
||||
|
||||
gpio_dbg("%s: %p: CON %08lx\n", __func__, base, con);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
@ -174,12 +188,35 @@ static int s3c64xx_gpiolib_4bit2_output(struct gpio_chip *chip,
|
||||
__raw_writel(con, regcon);
|
||||
__raw_writel(dat, base + OFF_GPDAT);
|
||||
|
||||
gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
|
||||
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = {
|
||||
.cfg_eint = 7,
|
||||
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
|
||||
.cfg_eint = 3,
|
||||
.set_config = s3c_gpio_setcfg_s3c64xx_4bit,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
{
|
||||
.base = S3C64XX_GPA_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPA(0),
|
||||
.ngpio = S3C64XX_GPIO_A_NR,
|
||||
@ -187,6 +224,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPB_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPB(0),
|
||||
.ngpio = S3C64XX_GPIO_B_NR,
|
||||
@ -194,6 +232,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPC_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPC(0),
|
||||
.ngpio = S3C64XX_GPIO_C_NR,
|
||||
@ -201,6 +240,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPD_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPD(0),
|
||||
.ngpio = S3C64XX_GPIO_D_NR,
|
||||
@ -208,6 +248,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPE_BASE,
|
||||
.config = &gpio_4bit_cfg_noint,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPE(0),
|
||||
.ngpio = S3C64XX_GPIO_E_NR,
|
||||
@ -215,6 +256,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPG_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPG(0),
|
||||
.ngpio = S3C64XX_GPIO_G_NR,
|
||||
@ -222,6 +264,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPM_BASE,
|
||||
.config = &gpio_4bit_cfg_eint0011,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPM(0),
|
||||
.ngpio = S3C64XX_GPIO_M_NR,
|
||||
@ -233,6 +276,7 @@ static struct s3c_gpio_chip gpio_4bit[] = {
|
||||
static struct s3c_gpio_chip gpio_4bit2[] = {
|
||||
{
|
||||
.base = S3C64XX_GPH_BASE + 0x4,
|
||||
.config = &gpio_4bit_cfg_eint0111,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPH(0),
|
||||
.ngpio = S3C64XX_GPIO_H_NR,
|
||||
@ -240,6 +284,7 @@ static struct s3c_gpio_chip gpio_4bit2[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPK_BASE + 0x4,
|
||||
.config = &gpio_4bit_cfg_noint,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPK(0),
|
||||
.ngpio = S3C64XX_GPIO_K_NR,
|
||||
@ -247,6 +292,7 @@ static struct s3c_gpio_chip gpio_4bit2[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPL_BASE + 0x4,
|
||||
.config = &gpio_4bit_cfg_eint0011,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPL(0),
|
||||
.ngpio = S3C64XX_GPIO_L_NR,
|
||||
@ -255,9 +301,30 @@ static struct s3c_gpio_chip gpio_4bit2[] = {
|
||||
},
|
||||
};
|
||||
|
||||
static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
|
||||
.set_config = s3c_gpio_setcfg_s3c24xx,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
|
||||
.cfg_eint = 2,
|
||||
.set_config = s3c_gpio_setcfg_s3c24xx,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = {
|
||||
.cfg_eint = 3,
|
||||
.set_config = s3c_gpio_setcfg_s3c24xx,
|
||||
.set_pull = s3c_gpio_setpull_updown,
|
||||
.get_pull = s3c_gpio_getpull_updown,
|
||||
};
|
||||
|
||||
static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
{
|
||||
.base = S3C64XX_GPF_BASE,
|
||||
.config = &gpio_2bit_cfg_eint11,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPF(0),
|
||||
.ngpio = S3C64XX_GPIO_F_NR,
|
||||
@ -265,6 +332,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPI_BASE,
|
||||
.config = &gpio_2bit_cfg_noint,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPI(0),
|
||||
.ngpio = S3C64XX_GPIO_I_NR,
|
||||
@ -272,6 +340,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPJ_BASE,
|
||||
.config = &gpio_2bit_cfg_noint,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPJ(0),
|
||||
.ngpio = S3C64XX_GPIO_J_NR,
|
||||
@ -279,6 +348,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPN_BASE,
|
||||
.config = &gpio_2bit_cfg_eint10,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPN(0),
|
||||
.ngpio = S3C64XX_GPIO_N_NR,
|
||||
@ -286,6 +356,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPO_BASE,
|
||||
.config = &gpio_2bit_cfg_eint11,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPO(0),
|
||||
.ngpio = S3C64XX_GPIO_O_NR,
|
||||
@ -293,6 +364,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPP_BASE,
|
||||
.config = &gpio_2bit_cfg_eint11,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPP(0),
|
||||
.ngpio = S3C64XX_GPIO_P_NR,
|
||||
@ -300,6 +372,7 @@ static struct s3c_gpio_chip gpio_2bit[] = {
|
||||
},
|
||||
}, {
|
||||
.base = S3C64XX_GPQ_BASE,
|
||||
.config = &gpio_2bit_cfg_eint11,
|
||||
.chip = {
|
||||
.base = S3C64XX_GPQ(0),
|
||||
.ngpio = S3C64XX_GPIO_Q_NR,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user