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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 03:08:06 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-18 03:08:06 +0100 |
commit | 411f5c7a502769ccc0377c5ba36cb0b283847ba8 (patch) | |
tree | 2c3a29671e3f923de48c55f94194849264a7bf53 /arch/arm/plat-s5p/setup-mipiphy.c | |
parent | Merge branches 'defcfg', 'drivers' and 'cyberpro-next' of master.kernel.org:/... (diff) | |
parent | Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene... (diff) | |
download | linux-411f5c7a502769ccc0377c5ba36cb0b283847ba8.tar.xz linux-411f5c7a502769ccc0377c5ba36cb0b283847ba8.zip |
Merge branch 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel-stable' of master.kernel.org:/home/rmk/linux-2.6-arm: (289 commits)
davinci: DM644x EVM: register MUSB device earlier
davinci: add spi devices on tnetv107x evm
davinci: add ssp config for tnetv107x evm board
davinci: add tnetv107x ssp platform device
spi: add ti-ssp spi master driver
mfd: add driver for sequencer serial port
ARM: EXYNOS4: Implement Clock gating for System MMU
ARM: EXYNOS4: Enhancement of System MMU driver
ARM: EXYNOS4: Add support for gpio interrupts
ARM: S5P: Add function to register gpio interrupt bank data
ARM: S5P: Cleanup S5P gpio interrupt code
ARM: EXYNOS4: Add missing GPYx banks
ARM: S3C64XX: Fix section mismatch from cpufreq init
ARM: EXYNOS4: Add keypad device to the SMDKV310
ARM: EXYNOS4: Update clocks for keypad
ARM: EXYNOS4: Update keypad base address
ARM: EXYNOS4: Add keypad device helpers
ARM: EXYNOS4: Add support for SATA on ARMLEX4210
plat-nomadik: make GPIO interrupts work with cpuidle ApSleep
mach-u300: define a dummy filter function for coh901318
...
Fix up various conflicts in
- arch/arm/mach-exynos4/cpufreq.c
- arch/arm/mach-mxs/gpio.c
- drivers/net/Kconfig
- drivers/tty/serial/Kconfig
- drivers/tty/serial/Makefile
- drivers/usb/gadget/fsl_mxc_udc.c
- drivers/video/Kconfig
Diffstat (limited to 'arch/arm/plat-s5p/setup-mipiphy.c')
-rw-r--r-- | arch/arm/plat-s5p/setup-mipiphy.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/plat-s5p/setup-mipiphy.c b/arch/arm/plat-s5p/setup-mipiphy.c new file mode 100644 index 000000000000..683c466c0e6a --- /dev/null +++ b/arch/arm/plat-s5p/setup-mipiphy.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2011 Samsung Electronics Co., Ltd. + * + * S5P - Helper functions for MIPI-CSIS and MIPI-DSIM D-PHY control + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/spinlock.h> +#include <mach/regs-clock.h> + +static int __s5p_mipi_phy_control(struct platform_device *pdev, + bool on, u32 reset) +{ + static DEFINE_SPINLOCK(lock); + void __iomem *addr; + unsigned long flags; + int pid; + u32 cfg; + + if (!pdev) + return -EINVAL; + + pid = (pdev->id == -1) ? 0 : pdev->id; + + if (pid != 0 && pid != 1) + return -EINVAL; + + addr = S5P_MIPI_DPHY_CONTROL(pid); + + spin_lock_irqsave(&lock, flags); + + cfg = __raw_readl(addr); + cfg = on ? (cfg | reset) : (cfg & ~reset); + __raw_writel(cfg, addr); + + if (on) { + cfg |= S5P_MIPI_DPHY_ENABLE; + } else if (!(cfg & (S5P_MIPI_DPHY_SRESETN | + S5P_MIPI_DPHY_MRESETN) & ~reset)) { + cfg &= ~S5P_MIPI_DPHY_ENABLE; + } + + __raw_writel(cfg, addr); + spin_unlock_irqrestore(&lock, flags); + + return 0; +} + +int s5p_csis_phy_enable(struct platform_device *pdev, bool on) +{ + return __s5p_mipi_phy_control(pdev, on, S5P_MIPI_DPHY_SRESETN); +} + +int s5p_dsim_phy_enable(struct platform_device *pdev, bool on) +{ + return __s5p_mipi_phy_control(pdev, on, S5P_MIPI_DPHY_MRESETN); +} |