From: Arnd Bergmann <arnd@arndb.de> To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org> Cc: linux-samsung-soc@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 25/36] ARM: s3c: spi: avoid hardcoding fiq number in driver Date: Thu, 10 Oct 2019 22:30:09 +0200 [thread overview] Message-ID: <20191010203043.1241612-25-arnd@arndb.de> (raw) In-Reply-To: <20191010203043.1241612-1-arnd@arndb.de> The IRQ_EINT0 constant is a platform detail that is defined in mach/irqs.h and not visible to drivers once that header is made private. Since the same calculation already happens in s3c24xx_set_fiq, just return the value from there. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm/mach-s3c24xx/irq-s3c24xx.c | 12 +++++++++--- drivers/spi/spi-s3c24xx.c | 18 ++---------------- include/linux/spi/s3c24xx.h | 2 +- 3 files changed, 12 insertions(+), 20 deletions(-) diff --git a/arch/arm/mach-s3c24xx/irq-s3c24xx.c b/arch/arm/mach-s3c24xx/irq-s3c24xx.c index b0e879ee14c1..3965347cacf0 100644 --- a/arch/arm/mach-s3c24xx/irq-s3c24xx.c +++ b/arch/arm/mach-s3c24xx/irq-s3c24xx.c @@ -376,14 +376,17 @@ asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs) /** * s3c24xx_set_fiq - set the FIQ routing * @irq: IRQ number to route to FIQ on processor. + * @ack_ptr: pointer to a location for storing the bit mask * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing. * * Change the state of the IRQ to FIQ routing depending on @irq and @on. If * @on is true, the @irq is checked to see if it can be routed and the * interrupt controller updated to route the IRQ. If @on is false, the FIQ * routing is cleared, regardless of which @irq is specified. + * + * returns the mask value for the register. */ -int s3c24xx_set_fiq(unsigned int irq, bool on) +int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on) { u32 intmod; unsigned offs; @@ -391,15 +394,18 @@ int s3c24xx_set_fiq(unsigned int irq, bool on) if (on) { offs = irq - FIQ_START; if (offs > 31) - return -EINVAL; + return 0; intmod = 1 << offs; } else { intmod = 0; } + if (ack_ptr) + *ack_ptr = intmod; writel_relaxed(intmod, S3C2410_INTMOD); - return 0; + + return intmod; } EXPORT_SYMBOL_GPL(s3c24xx_set_fiq); diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c index 464146fc8420..58025876a081 100644 --- a/drivers/spi/spi-s3c24xx.c +++ b/drivers/spi/spi-s3c24xx.c @@ -229,17 +229,6 @@ struct spi_fiq_code { u8 data[0]; }; -/** - * ack_bit - turn IRQ into IRQ acknowledgement bit - * @irq: The interrupt number - * - * Returns the bit to write to the interrupt acknowledge register. - */ -static inline u32 ack_bit(unsigned int irq) -{ - return 1 << (irq - IRQ_EINT0); -} - /** * s3c24xx_spi_tryfiq - attempt to claim and setup FIQ for transfer * @hw: The hardware state. @@ -256,6 +245,7 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) struct pt_regs regs; enum spi_fiq_mode mode; struct spi_fiq_code *code; + u32 *ack_ptr = NULL; int ret; if (!hw->fiq_claimed) { @@ -282,8 +272,6 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) set_fiq_regs(®s); if (hw->fiq_mode != mode) { - u32 *ack_ptr; - hw->fiq_mode = mode; switch (mode) { @@ -303,12 +291,10 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) BUG_ON(!code); ack_ptr = (u32 *)&code->data[code->ack_offset]; - *ack_ptr = ack_bit(hw->irq); - set_fiq_handler(&code->data, code->length); } - s3c24xx_set_fiq(hw->irq, true); + s3c24xx_set_fiq(hw->irq, ack_ptr, true); hw->fiq_mode = mode; hw->fiq_inuse = 1; diff --git a/include/linux/spi/s3c24xx.h b/include/linux/spi/s3c24xx.h index c91d10b82f08..440a71593162 100644 --- a/include/linux/spi/s3c24xx.h +++ b/include/linux/spi/s3c24xx.h @@ -20,6 +20,6 @@ struct s3c2410_spi_info { void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol); }; -extern int s3c24xx_set_fiq(unsigned int irq, bool on); +extern int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on); #endif /* __LINUX_SPI_S3C24XX_H */ -- 2.20.0
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de> To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org> Cc: linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linus.walleij@linaro.org, Arnd Bergmann <arnd@arndb.de>, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Subject: [PATCH 25/36] ARM: s3c: spi: avoid hardcoding fiq number in driver Date: Thu, 10 Oct 2019 22:30:09 +0200 [thread overview] Message-ID: <20191010203043.1241612-25-arnd@arndb.de> (raw) Message-ID: <20191010203009.bSh-0-xMRIG_jt3LzmbKbnWztpQEPDG0P8OnNZiY-EY@z> (raw) In-Reply-To: <20191010203043.1241612-1-arnd@arndb.de> The IRQ_EINT0 constant is a platform detail that is defined in mach/irqs.h and not visible to drivers once that header is made private. Since the same calculation already happens in s3c24xx_set_fiq, just return the value from there. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/arm/mach-s3c24xx/irq-s3c24xx.c | 12 +++++++++--- drivers/spi/spi-s3c24xx.c | 18 ++---------------- include/linux/spi/s3c24xx.h | 2 +- 3 files changed, 12 insertions(+), 20 deletions(-) diff --git a/arch/arm/mach-s3c24xx/irq-s3c24xx.c b/arch/arm/mach-s3c24xx/irq-s3c24xx.c index b0e879ee14c1..3965347cacf0 100644 --- a/arch/arm/mach-s3c24xx/irq-s3c24xx.c +++ b/arch/arm/mach-s3c24xx/irq-s3c24xx.c @@ -376,14 +376,17 @@ asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs) /** * s3c24xx_set_fiq - set the FIQ routing * @irq: IRQ number to route to FIQ on processor. + * @ack_ptr: pointer to a location for storing the bit mask * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing. * * Change the state of the IRQ to FIQ routing depending on @irq and @on. If * @on is true, the @irq is checked to see if it can be routed and the * interrupt controller updated to route the IRQ. If @on is false, the FIQ * routing is cleared, regardless of which @irq is specified. + * + * returns the mask value for the register. */ -int s3c24xx_set_fiq(unsigned int irq, bool on) +int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on) { u32 intmod; unsigned offs; @@ -391,15 +394,18 @@ int s3c24xx_set_fiq(unsigned int irq, bool on) if (on) { offs = irq - FIQ_START; if (offs > 31) - return -EINVAL; + return 0; intmod = 1 << offs; } else { intmod = 0; } + if (ack_ptr) + *ack_ptr = intmod; writel_relaxed(intmod, S3C2410_INTMOD); - return 0; + + return intmod; } EXPORT_SYMBOL_GPL(s3c24xx_set_fiq); diff --git a/drivers/spi/spi-s3c24xx.c b/drivers/spi/spi-s3c24xx.c index 464146fc8420..58025876a081 100644 --- a/drivers/spi/spi-s3c24xx.c +++ b/drivers/spi/spi-s3c24xx.c @@ -229,17 +229,6 @@ struct spi_fiq_code { u8 data[0]; }; -/** - * ack_bit - turn IRQ into IRQ acknowledgement bit - * @irq: The interrupt number - * - * Returns the bit to write to the interrupt acknowledge register. - */ -static inline u32 ack_bit(unsigned int irq) -{ - return 1 << (irq - IRQ_EINT0); -} - /** * s3c24xx_spi_tryfiq - attempt to claim and setup FIQ for transfer * @hw: The hardware state. @@ -256,6 +245,7 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) struct pt_regs regs; enum spi_fiq_mode mode; struct spi_fiq_code *code; + u32 *ack_ptr = NULL; int ret; if (!hw->fiq_claimed) { @@ -282,8 +272,6 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) set_fiq_regs(®s); if (hw->fiq_mode != mode) { - u32 *ack_ptr; - hw->fiq_mode = mode; switch (mode) { @@ -303,12 +291,10 @@ static void s3c24xx_spi_tryfiq(struct s3c24xx_spi *hw) BUG_ON(!code); ack_ptr = (u32 *)&code->data[code->ack_offset]; - *ack_ptr = ack_bit(hw->irq); - set_fiq_handler(&code->data, code->length); } - s3c24xx_set_fiq(hw->irq, true); + s3c24xx_set_fiq(hw->irq, ack_ptr, true); hw->fiq_mode = mode; hw->fiq_inuse = 1; diff --git a/include/linux/spi/s3c24xx.h b/include/linux/spi/s3c24xx.h index c91d10b82f08..440a71593162 100644 --- a/include/linux/spi/s3c24xx.h +++ b/include/linux/spi/s3c24xx.h @@ -20,6 +20,6 @@ struct s3c2410_spi_info { void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol); }; -extern int s3c24xx_set_fiq(unsigned int irq, bool on); +extern int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on); #endif /* __LINUX_SPI_S3C24XX_H */ -- 2.20.0
next prev parent reply other threads:[~2019-10-10 20:30 UTC|newest] Thread overview: 135+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-10 20:28 [PATCH 00/36] ARM: samsung platform cleanup Arnd Bergmann 2019-10-10 20:28 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 01/36] ARM: samsung: make S3C24XX_MISCCR access indirect Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 02/36] ARM: s3c: simplify mach/io.h Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 03/36] usb: gadget: s3c: use platform resources Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 10:06 ` Krzysztof Kozlowski 2019-10-23 12:46 ` Krzysztof Kozlowski 2019-10-23 13:26 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 04/36] usb: gadget: s3c-hsudc: remove platform header dependency Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 10:09 ` Krzysztof Kozlowski 2019-10-23 12:21 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 05/36] ARM: samsung: make pm-debug platform independent Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 10:27 ` Krzysztof Kozlowski 2019-10-23 12:13 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 06/36] ARM: samsung: move CONFIG_DEBUG_S3C_UART to Kconfig.debug Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 10:12 ` Krzysztof Kozlowski 2019-10-23 12:22 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 07/36] ARM: exynos: use private samsung_cpu_id copy Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 10:54 ` Krzysztof Kozlowski 2019-10-23 12:37 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 08/36] ARM: exynos: stop selecting PLAT_SAMSUNG Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-15 14:12 ` Ulf Hansson 2019-10-23 10:57 ` Krzysztof Kozlowski 2019-10-23 12:43 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 09/36] ARM: samsung: move pm check code to drivers/soc Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 11:32 ` Krzysztof Kozlowski 2019-10-23 12:45 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 10/36] ARM: s5pv210: use private pm save/restore Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 11:55 ` Krzysztof Kozlowski 2019-10-23 13:12 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 11/36] ARM: s5pv210: split from plat-samsung Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-11 5:51 ` Uwe Kleine-König 2019-10-11 5:51 ` Uwe Kleine-König 2019-10-22 14:01 ` Arnd Bergmann 2019-10-22 15:53 ` Uwe Kleine-König 2019-10-22 16:20 ` Arnd Bergmann 2019-10-15 14:13 ` Ulf Hansson 2019-10-15 14:23 ` Thierry Reding 2019-10-23 12:14 ` Krzysztof Kozlowski 2019-10-23 13:17 ` Arnd Bergmann 2019-10-23 14:12 ` Krzysztof Kozlowski 2019-10-10 20:29 ` [PATCH 12/36] ARM: s3c64xx: remove mach/hardware.h Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-16 10:09 ` Charles Keepax 2019-10-10 20:29 ` [PATCH 13/36] ARM: s3c: move regs-spi.h into spi driver Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-23 12:32 ` Krzysztof Kozlowski 2019-10-23 13:21 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 14/36] ARM: s3c: move irqchip driver back into platform Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-10 20:29 ` [PATCH 15/36] ARM: s3c: adc: move header to linux/soc/samsung Arnd Bergmann 2019-10-10 20:29 ` Arnd Bergmann 2019-10-10 22:20 ` Guenter Roeck 2019-10-10 22:20 ` Guenter Roeck 2019-10-10 22:29 ` Dmitry Torokhov 2019-10-10 22:29 ` Dmitry Torokhov 2019-10-10 22:44 ` Sebastian Reichel 2019-10-10 22:44 ` Sebastian Reichel 2019-10-23 12:37 ` Krzysztof Kozlowski 2019-10-23 13:23 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 16/36] ARM: s3c: move spi fiq handler into platform Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 17/36] ARM: s3c: h1940-audio: turn into platform driver Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 18/36] ARM: s3c: gta02-audio: " Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 19/36] ARM: s3c: rx1950: " Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 20/36] ASoC: samsung: s3c2412-i2s: avoid hardcoded S3C2410_PA_IIS Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-11 10:50 ` Mark Brown 2019-10-11 10:50 ` Mark Brown 2019-10-10 20:30 ` [PATCH 21/36] ARM: s3c: move iis pinctrl config into boards Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-23 12:50 ` Krzysztof Kozlowski 2019-10-23 13:29 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 22/36] ARM: s3c: leds: move setpull() calls into board files Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 23/36] ARM: s3c: move s3cmci pinctrl handling " Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-15 14:12 ` Ulf Hansson 2019-10-16 13:12 ` Linus Walleij 2019-10-10 20:30 ` [PATCH 24/36] ARM: s3c: include mach/irqs.h where needed Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann [this message] 2019-10-10 20:30 ` [PATCH 25/36] ARM: s3c: spi: avoid hardcoding fiq number in driver Arnd Bergmann 2019-10-10 20:30 ` [PATCH 26/36] ARM: s3c: bast: avoid irq_desc array usage Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 27/36] ARM: s3c: fix mmc gpio lookup tables Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 28/36] fbdev: s3c2410fb: remove mach header dependency Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-23 13:13 ` Krzysztof Kozlowski 2019-10-23 13:35 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 29/36] ARM: s3c: cpufreq: split out registers Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 30/36] ARM: s3c: remove cpufreq header dependencies Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-23 13:38 ` Krzysztof Kozlowski 2019-10-23 13:46 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 31/36] ARM: s3c: cpufreq: use global s3c2412_cpufreq_setrefresh Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-23 13:44 ` Krzysztof Kozlowski 2019-10-23 13:57 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 32/36] ARM: s3c: iotiming: make functions static Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 33/36] ARM: s3c: move low-level clk reg access into platform code Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-23 13:49 ` Krzysztof Kozlowski 2019-10-23 13:54 ` Arnd Bergmann 2019-10-10 20:30 ` [PATCH 34/36] ARM: s3c: stop including mach/hardware.h from mach/io.h Arnd Bergmann 2019-10-10 20:30 ` Arnd Bergmann 2019-10-10 21:02 ` Russell King - ARM Linux admin 2019-10-10 21:02 ` Russell King - ARM Linux admin 2019-10-10 21:53 ` Arnd Bergmann 2019-10-10 21:53 ` Arnd Bergmann 2019-10-15 14:52 ` [PATCH 01/36] ARM: samsung: make S3C24XX_MISCCR access indirect Tomasz Figa 2019-10-10 21:07 ` [PATCH 35/36] ARM: s3c: move into a common directory Arnd Bergmann 2019-10-10 21:07 ` Arnd Bergmann 2019-10-23 14:05 ` Krzysztof Kozlowski 2019-10-10 21:07 ` [PATCH 36/36] ARM: s3c: make headers local if possible Arnd Bergmann 2019-10-10 21:07 ` Arnd Bergmann 2019-10-23 13:10 ` [PATCH 00/36] ARM: samsung platform cleanup Krzysztof Kozlowski 2019-10-23 13:39 ` Arnd Bergmann
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