2 * Copyright (C) 2011 Samsung Electronics Co., Ltd.
4 * S5P - Helper functions for MIPI-CSIS and MIPI-DSIM D-PHY control
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
14 #include <linux/spinlock.h>
15 #include <mach/regs-clock.h>
17 static int __s5p_mipi_phy_control(struct platform_device *pdev,
20 static DEFINE_SPINLOCK(lock);
29 pid = (pdev->id == -1) ? 0 : pdev->id;
31 if (pid != 0 && pid != 1)
34 addr = S5P_MIPI_DPHY_CONTROL(pid);
36 spin_lock_irqsave(&lock, flags);
38 cfg = __raw_readl(addr);
39 cfg = on ? (cfg | reset) : (cfg & ~reset);
40 __raw_writel(cfg, addr);
43 cfg |= S5P_MIPI_DPHY_ENABLE;
44 } else if (!(cfg & (S5P_MIPI_DPHY_SRESETN |
45 S5P_MIPI_DPHY_MRESETN) & ~reset)) {
46 cfg &= ~S5P_MIPI_DPHY_ENABLE;
49 __raw_writel(cfg, addr);
50 spin_unlock_irqrestore(&lock, flags);
55 int s5p_csis_phy_enable(struct platform_device *pdev, bool on)
57 return __s5p_mipi_phy_control(pdev, on, S5P_MIPI_DPHY_SRESETN);
60 int s5p_dsim_phy_enable(struct platform_device *pdev, bool on)
62 return __s5p_mipi_phy_control(pdev, on, S5P_MIPI_DPHY_MRESETN);