Message ID | 1446201391-22553-2-git-send-email-albeu@free.fr |
---|---|
State | New |
Headers | show |
Hi Alban,
[auto build test ERROR on v4.3-rc7 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
url: https://github.com/0day-ci/linux/commits/Alban-Bedel/MAINTAINERS-Add-an-entry-for-the-ATH79-GPIO-driver/20151030-183832
config: i386-allmodconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
>> drivers/gpio/gpio-ath79.c:20:40: fatal error: asm/mach-ath79/ar71xx_regs.h: No such file or directory
compilation terminated.
vim +20 drivers/gpio/gpio-ath79.c
6eae43c5 arch/mips/ath79/gpio.c Gabor Juhos 2011-01-04 14
7351d84b drivers/gpio/gpio-ath79.c Alban Bedel 2015-10-30 15 #include <linux/gpio/driver.h>
2ddf3a79 arch/mips/ath79/gpio.c Alban Bedel 2015-05-31 16 #include <linux/platform_data/gpio-ath79.h>
2ddf3a79 arch/mips/ath79/gpio.c Alban Bedel 2015-05-31 17 #include <linux/of_device.h>
7351d84b drivers/gpio/gpio-ath79.c Alban Bedel 2015-10-30 18 #include <linux/basic_mmio_gpio.h>
6eae43c5 arch/mips/ath79/gpio.c Gabor Juhos 2011-01-04 19
6eae43c5 arch/mips/ath79/gpio.c Gabor Juhos 2011-01-04 @20 #include <asm/mach-ath79/ar71xx_regs.h>
6eae43c5 arch/mips/ath79/gpio.c Gabor Juhos 2011-01-04 21
7351d84b drivers/gpio/gpio-ath79.c Alban Bedel 2015-10-30 22 struct ath79_gpio {
7351d84b drivers/gpio/gpio-ath79.c Alban Bedel 2015-10-30 23 struct bgpio_chip bgc;
:::::: The code at line 20 was first introduced by commit
:::::: 6eae43c57ee92de91f6cc7c391cea97c43295da0 MIPS: ath79: add GPIOLIB support
:::::: TO: Gabor Juhos <juhosg@openwrt.org>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
On Fri, Oct 30, 2015 at 11:36 AM, Alban Bedel <albeu@free.fr> wrote: > Turn the ath79 driver into a true driver supporting multiple > instances while dropping most of the code in favor of the generic > MMIO GPIO driver. > > As the driver now depend on CONFIG_GPIO_GENERIC also add a Kconfig > entry to make the driver optional. > > Signed-off-by: Alban Bedel <albeu@free.fr> This patch looks nice but sadly does not apply to my "devel" branch in the GPIO tree: https://git.kernel.org/cgit/linux/kernel/git/linusw/linux-gpio.git/log/?h=devel Please rebase it on this branch or wait until after the merge window. > +config GPIO_ATH79 > + tristate "Atheros AR71XX/AR724X/AR913X GPIO support" > + default y if ATH79 > + depends on ATH79 || COMPILE_TEST I think the build robot is complaining because of COMPILE_TEST. This driver doesn't really compile on anything else than ATH79 does it? Noone else has asm/mach-ath79/ar71xx_regs.h So I suggest dropping the compile test until this is fixed (e.g. by moving the GPIO register offsets into the driver, what do I know). > + select GPIO_GENERIC This is very very nice. And works out nice, as we can see. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sat, 31 Oct 2015 22:02:53 +0100 Linus Walleij <linus.walleij@linaro.org> wrote: > On Fri, Oct 30, 2015 at 11:36 AM, Alban Bedel <albeu@free.fr> wrote: > > > Turn the ath79 driver into a true driver supporting multiple > > instances while dropping most of the code in favor of the generic > > MMIO GPIO driver. > > > > As the driver now depend on CONFIG_GPIO_GENERIC also add a Kconfig > > entry to make the driver optional. > > > > Signed-off-by: Alban Bedel <albeu@free.fr> > > This patch looks nice but sadly does not apply to my "devel" branch in > the GPIO tree: > https://git.kernel.org/cgit/linux/kernel/git/linusw/linux-gpio.git/log/?h=devel > > Please rebase it on this branch or wait until after the merge window. I see that you applied my previous patch "gpio: ath79: Convert to the state container design pattern", this series was supposed to replace this patch. I'm sorry I forgot to mention this. That old patch doesn't make much sense any more as most of the code it changed just get dropped in the move to GPIO_GENERIC. > > +config GPIO_ATH79 > > + tristate "Atheros AR71XX/AR724X/AR913X GPIO support" > > + default y if ATH79 > > + depends on ATH79 || COMPILE_TEST > > I think the build robot is complaining because of COMPILE_TEST. This > driver doesn't really compile on anything else than ATH79 does it? > Noone else has asm/mach-ath79/ar71xx_regs.h > > So I suggest dropping the compile test until this is fixed (e.g. by > moving the GPIO register offsets into the driver, what do I know). I'm going to split the compile test support to a separate patch. Alban -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sun, Nov 1, 2015 at 6:46 PM, Alban <albeu@free.fr> wrote: > On Sat, 31 Oct 2015 22:02:53 +0100 > Linus Walleij <linus.walleij@linaro.org> wrote: >> Please rebase it on this branch or wait until after the merge window. > > I see that you applied my previous patch "gpio: ath79: Convert to the > state container design pattern", this series was supposed to replace > this patch. I'm sorry I forgot to mention this. That old patch doesn't > make much sense any more as most of the code it changed just get > dropped in the move to GPIO_GENERIC. Hm you can tell me exactly which commits I need to revert or something ... I cannot rebase the tree now. It would be best if you cook a GPIO_GENERIC patch based on devel. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 8949b3f..a979f1a 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -119,6 +119,15 @@ config GPIO_ALTERA If driver is built as a module it will be called gpio-altera. +config GPIO_ATH79 + tristate "Atheros AR71XX/AR724X/AR913X GPIO support" + default y if ATH79 + depends on ATH79 || COMPILE_TEST + select GPIO_GENERIC + help + Select this option to enable GPIO driver for + Atheros AR71XX/AR724X/AR913X SoC devices. + config GPIO_BCM_KONA bool "Broadcom Kona GPIO" depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index f79a7c4..24c7371 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -20,7 +20,7 @@ obj-$(CONFIG_GPIO_ADP5588) += gpio-adp5588.o obj-$(CONFIG_GPIO_ALTERA) += gpio-altera.o obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o -obj-$(CONFIG_ATH79) += gpio-ath79.o +obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.o obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c index 03b9953..3e71ced 100644 --- a/drivers/gpio/gpio-ath79.c +++ b/drivers/gpio/gpio-ath79.c @@ -12,129 +12,15 @@ * by the Free Software Foundation. */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <linux/platform_data/gpio-ath79.h> #include <linux/of_device.h> +#include <linux/basic_mmio_gpio.h> #include <asm/mach-ath79/ar71xx_regs.h> -static void __iomem *ath79_gpio_base; -static u32 ath79_gpio_count; -static DEFINE_SPINLOCK(ath79_gpio_lock); - -static void __ath79_gpio_set_value(unsigned gpio, int value) -{ - void __iomem *base = ath79_gpio_base; - - if (value) - __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_SET); - else - __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_CLEAR); -} - -static int __ath79_gpio_get_value(unsigned gpio) -{ - return (__raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_IN) >> gpio) & 1; -} - -static int ath79_gpio_get_value(struct gpio_chip *chip, unsigned offset) -{ - return __ath79_gpio_get_value(offset); -} - -static void ath79_gpio_set_value(struct gpio_chip *chip, - unsigned offset, int value) -{ - __ath79_gpio_set_value(offset, value); -} - -static int ath79_gpio_direction_input(struct gpio_chip *chip, - unsigned offset) -{ - void __iomem *base = ath79_gpio_base; - unsigned long flags; - - spin_lock_irqsave(&ath79_gpio_lock, flags); - - __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset), - base + AR71XX_GPIO_REG_OE); - - spin_unlock_irqrestore(&ath79_gpio_lock, flags); - - return 0; -} - -static int ath79_gpio_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - void __iomem *base = ath79_gpio_base; - unsigned long flags; - - spin_lock_irqsave(&ath79_gpio_lock, flags); - - if (value) - __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET); - else - __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR); - - __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset), - base + AR71XX_GPIO_REG_OE); - - spin_unlock_irqrestore(&ath79_gpio_lock, flags); - - return 0; -} - -static int ar934x_gpio_direction_input(struct gpio_chip *chip, unsigned offset) -{ - void __iomem *base = ath79_gpio_base; - unsigned long flags; - - spin_lock_irqsave(&ath79_gpio_lock, flags); - - __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset), - base + AR71XX_GPIO_REG_OE); - - spin_unlock_irqrestore(&ath79_gpio_lock, flags); - - return 0; -} - -static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset, - int value) -{ - void __iomem *base = ath79_gpio_base; - unsigned long flags; - - spin_lock_irqsave(&ath79_gpio_lock, flags); - - if (value) - __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET); - else - __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR); - - __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset), - base + AR71XX_GPIO_REG_OE); - - spin_unlock_irqrestore(&ath79_gpio_lock, flags); - - return 0; -} - -static struct gpio_chip ath79_gpio_chip = { - .label = "ath79", - .get = ath79_gpio_get_value, - .set = ath79_gpio_set_value, - .direction_input = ath79_gpio_direction_input, - .direction_output = ath79_gpio_direction_output, - .base = 0, +struct ath79_gpio { + struct bgpio_chip bgc; }; static const struct of_device_id ath79_gpio_of_match[] = { @@ -147,10 +33,17 @@ static int ath79_gpio_probe(struct platform_device *pdev) { struct ath79_gpio_platform_data *pdata = pdev->dev.platform_data; struct device_node *np = pdev->dev.of_node; + void __iomem *ath79_gpio_base; + struct ath79_gpio *ctrl; struct resource *res; + u32 ath79_gpio_count; bool oe_inverted; int err; + ctrl = devm_kzalloc(&pdev->dev, sizeof(*ctrl), GFP_KERNEL); + if (!ctrl) + return -ENOMEM; + if (np) { err = of_property_read_u32(np, "ngpios", &ath79_gpio_count); if (err) { @@ -176,14 +69,25 @@ static int ath79_gpio_probe(struct platform_device *pdev) if (!ath79_gpio_base) return -ENOMEM; - ath79_gpio_chip.dev = &pdev->dev; - ath79_gpio_chip.ngpio = ath79_gpio_count; - if (oe_inverted) { - ath79_gpio_chip.direction_input = ar934x_gpio_direction_input; - ath79_gpio_chip.direction_output = ar934x_gpio_direction_output; + err = bgpio_init(&ctrl->bgc, &pdev->dev, 4, + ath79_gpio_base + AR71XX_GPIO_REG_IN, + ath79_gpio_base + AR71XX_GPIO_REG_SET, + ath79_gpio_base + AR71XX_GPIO_REG_CLEAR, + oe_inverted ? + NULL : ath79_gpio_base + AR71XX_GPIO_REG_OE, + oe_inverted ? + ath79_gpio_base + AR71XX_GPIO_REG_OE : NULL, + 0); + if (err) { + dev_err(&pdev->dev, "bgpio_init failed\n"); + return err; } - err = gpiochip_add(&ath79_gpio_chip); + ctrl->bgc.gc.label = "ath79"; + ctrl->bgc.gc.base = 0; + ctrl->bgc.gc.ngpio = ath79_gpio_count; + + err = gpiochip_add(&ctrl->bgc.gc); if (err) { dev_err(&pdev->dev, "cannot add AR71xx GPIO chip, error=%d", err);
Turn the ath79 driver into a true driver supporting multiple instances while dropping most of the code in favor of the generic MMIO GPIO driver. As the driver now depend on CONFIG_GPIO_GENERIC also add a Kconfig entry to make the driver optional. Signed-off-by: Alban Bedel <albeu@free.fr> --- drivers/gpio/Kconfig | 9 +++ drivers/gpio/Makefile | 2 +- drivers/gpio/gpio-ath79.c | 152 +++++++++------------------------------------- 3 files changed, 38 insertions(+), 125 deletions(-)