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author | Olof Johansson <olof@lixom.net> | 2020-09-13 11:14:59 -0700 |
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committer | Olof Johansson <olof@lixom.net> | 2020-09-13 11:15:01 -0700 |
commit | 465c335bb5fd25f1f433481b7423a982e23a4c58 (patch) | |
tree | 7c6214703083462e2b539dc630bfb63f3ac97874 /arch/arm/mach-s3c/pm-core-s3c64xx.h | |
parent | Linux 5.9-rc3 (diff) | |
parent | ARM: s3c: Avoid naming clash of S3C24xx and S3C64xx timer setup (diff) | |
download | linux-dev-465c335bb5fd25f1f433481b7423a982e23a4c58.tar.xz linux-dev-465c335bb5fd25f1f433481b7423a982e23a4c58.zip |
Merge tag 'samsung-soc-s3c-5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/soc
Samsung S3C24xx and S3C64xx machine code cleanup for v5.10
Big cleanup for the Samsung S3C24xx and S3C64xx platforms, although it
also touches files shared with S5Pv210 and Exynos. This is mostly Arnd
Bergmann work which Krzysztof Kozlowski took over, rebased and polished.
The goal is to cleanup, merge and finally make the Samsung S3C24xx and
S3C64xx architectures multiplatform. The multiplatform did not happen
yet here - just cleaning up and merging into one arch/arm/mach-s3c
directory. However this is step forward for multiplatform or at least
to keep this code still maintainable.
This pulls also branch with changes for Samsung SoC sound drivers from
broonie/sound because the cleanups there were part of this series and
all further patches depend on them.
* tag 'samsung-soc-s3c-5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: (62 commits)
ARM: s3c: Avoid naming clash of S3C24xx and S3C64xx timer setup
ARM: s3c: Cleanup from old plat-samsung include
ARM: s3c: make headers local if possible
ARM: s3c: move into a common directory
ARM: s3c24xx: stop including mach/hardware.h from mach/io.h
cpufreq: s3c24xx: move low-level clk reg access into platform code
cpufreq: s3c2412: use global s3c2412_cpufreq_setrefresh
ARM: s3c: remove cpufreq header dependencies
cpufreq: s3c24xx: split out registers
fbdev: s3c2410fb: remove mach header dependency
ARM: s3c24xx: bast: avoid irq_desc array usage
ARM: s3c24xx: spi: avoid hardcoding fiq number in driver
ARM: s3c24xx: include mach/irqs.h where needed
ARM: s3c24xx: move s3cmci pinctrl handling into board files
ARM: s3c24xx: move iis pinctrl config into boards
ARM: s3c24xx: move spi fiq handler into platform
ARM: s3c: adc: move header to linux/soc/samsung
ARM: s3c24xx: move irqchip driver back into platform
ARM: s3c24xx: move regs-spi.h into spi driver
ARM: s3c64xx: remove mach/hardware.h
...
Link: https://lore.kernel.org/r/20200831154751.7551-1-krzk@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-s3c/pm-core-s3c64xx.h')
-rw-r--r-- | arch/arm/mach-s3c/pm-core-s3c64xx.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/pm-core-s3c64xx.h b/arch/arm/mach-s3c/pm-core-s3c64xx.h new file mode 100644 index 000000000000..06f564e5cf63 --- /dev/null +++ b/arch/arm/mach-s3c/pm-core-s3c64xx.h @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C64XX - PM core support for arch/arm/plat-s3c/pm.c + */ + +#ifndef __MACH_S3C64XX_PM_CORE_H +#define __MACH_S3C64XX_PM_CORE_H __FILE__ + +#include <linux/serial_s3c.h> +#include <linux/delay.h> + +#include "regs-gpio.h" +#include "regs-clock.h" +#include "map.h" + +static inline void s3c_pm_debug_init_uart(void) +{ +#ifdef CONFIG_SAMSUNG_PM_DEBUG + u32 tmp = __raw_readl(S3C_PCLK_GATE); + + /* As a note, since the S3C64XX UARTs generally have multiple + * clock sources, we simply enable PCLK at the moment and hope + * that the resume settings for the UART are suitable for the + * use with PCLK. + */ + + tmp |= S3C_CLKCON_PCLK_UART0; + tmp |= S3C_CLKCON_PCLK_UART1; + tmp |= S3C_CLKCON_PCLK_UART2; + tmp |= S3C_CLKCON_PCLK_UART3; + + __raw_writel(tmp, S3C_PCLK_GATE); + udelay(10); +#endif +} + +static inline void s3c_pm_arch_prepare_irqs(void) +{ + /* VIC should have already been taken care of */ + + /* clear any pending EINT0 interrupts */ + __raw_writel(__raw_readl(S3C64XX_EINT0PEND), S3C64XX_EINT0PEND); +} + +static inline void s3c_pm_arch_stop_clocks(void) +{ +} + +static inline void s3c_pm_arch_show_resume_irqs(void) +{ +} + +/* make these defines, we currently do not have any need to change + * the IRQ wake controls depending on the CPU we are running on */ +#ifdef CONFIG_PM_SLEEP +#define s3c_irqwake_eintallow ((1 << 28) - 1) +#define s3c_irqwake_intallow (~0) +#else +#define s3c_irqwake_eintallow 0 +#define s3c_irqwake_intallow 0 +#endif + +static inline void s3c_pm_restored_gpios(void) +{ + /* ensure sleep mode has been cleared from the system */ + + __raw_writel(0, S3C64XX_SLPEN); +} + +static inline void samsung_pm_saved_gpios(void) +{ + /* turn on the sleep mode and keep it there, as it seems that during + * suspend the xCON registers get re-set and thus you can end up with + * problems between going to sleep and resuming. + */ + + __raw_writel(S3C64XX_SLPEN_USE_xSLP, S3C64XX_SLPEN); +} +#endif /* __MACH_S3C64XX_PM_CORE_H */ |