https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 31d141e3a666269a3b6fcccddb0351caf7454240 authored by Linus Torvalds on 19 October 2013, 19:28:15 UTC
Linux 3.12-rc6
Linux 3.12-rc6
Tip revision: 31d141e
setup-mipiphy.c
/*
* 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/export.h>
#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(int id, bool on, u32 reset)
{
static DEFINE_SPINLOCK(lock);
void __iomem *addr;
unsigned long flags;
u32 cfg;
id = max(0, id);
if (id > 1)
return -EINVAL;
addr = S5P_MIPI_DPHY_CONTROL(id);
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(int id, bool on)
{
return __s5p_mipi_phy_control(id, on, S5P_MIPI_DPHY_SRESETN);
}
EXPORT_SYMBOL(s5p_csis_phy_enable);
int s5p_dsim_phy_enable(struct platform_device *pdev, bool on)
{
return __s5p_mipi_phy_control(pdev->id, on, S5P_MIPI_DPHY_MRESETN);
}
EXPORT_SYMBOL(s5p_dsim_phy_enable);