ARM: S5P: Add support for common MIPI CSIS/DSIM D-PHY control

Add common code for MIPI-CSIS and MIPI-DSIM drivers to support
their corresponding D-PHY's enable and reset control.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Sylwester Nawrocki 2011-03-10 21:53:40 +09:00 committed by Kukjin Kim
parent e24d208de6
commit 1d45ac49da
6 changed files with 81 additions and 2 deletions

View file

@ -160,7 +160,9 @@
#define S5P_CLKDIV_BUS_GPLR_SHIFT (4)
#define S5P_CLKDIV_BUS_GPLR_MASK (0x7 << S5P_CLKDIV_BUS_GPLR_SHIFT)
/* Compatibility defines */
/* Compatibility defines and inclusion */
#include <mach/regs-pmu.h>
#define S5P_EPLL_CON S5P_EPLL_CON0

View file

@ -17,6 +17,11 @@
#define S5P_PMUREG(x) (S5P_VA_PMU + (x))
#define S5P_MIPI_DPHY_CONTROL(n) S5P_PMUREG(0x0710 + (n) * 4)
#define S5P_MIPI_DPHY_ENABLE (1 << 0)
#define S5P_MIPI_DPHY_SRESETN (1 << 1)
#define S5P_MIPI_DPHY_MRESETN (1 << 2)
#define S5P_PMU_CAM_CONF S5P_PMUREG(0x3C00)
#define S5P_PMU_TV_CONF S5P_PMUREG(0x3C20)
#define S5P_PMU_MFC_CONF S5P_PMUREG(0x3C40)

View file

@ -146,6 +146,10 @@
#define S5P_OM_STAT S5P_CLKREG(0xE100)
#define S5P_USB_PHY_CONTROL S5P_CLKREG(0xE80C)
#define S5P_DAC_CONTROL S5P_CLKREG(0xE810)
#define S5P_MIPI_DPHY_CONTROL(x) S5P_CLKREG(0xE814)
#define S5P_MIPI_DPHY_ENABLE (1 << 0)
#define S5P_MIPI_DPHY_SRESETN (1 << 1)
#define S5P_MIPI_DPHY_MRESETN (1 << 2)
#define S5P_INFORM0 S5P_CLKREG(0xF000)
#define S5P_INFORM1 S5P_CLKREG(0xF004)
@ -161,7 +165,6 @@
#define S5P_MDNIE_SEL S5P_CLKREG(0x7008)
#define S5P_MIPI_PHY_CON0 S5P_CLKREG(0x7200)
#define S5P_MIPI_PHY_CON1 S5P_CLKREG(0x7204)
#define S5P_MIPI_DPHY_CONTROL S5P_CLKREG(0xE814)
#define S5P_IDLE_CFG_TL_MASK (3 << 30)
#define S5P_IDLE_CFG_TM_MASK (3 << 28)

View file

@ -74,3 +74,8 @@ config S5P_DEV_CSIS1
bool
help
Compile in platform device definitions for MIPI-CSIS channel 1
config S5P_SETUP_MIPIPHY
bool
help
Compile in common setup code for MIPI-CSIS and MIPI-DSIM devices

View file

@ -31,3 +31,4 @@ obj-$(CONFIG_S5P_DEV_FIMC2) += dev-fimc2.o
obj-$(CONFIG_S5P_DEV_ONENAND) += dev-onenand.o
obj-$(CONFIG_S5P_DEV_CSIS0) += dev-csis0.o
obj-$(CONFIG_S5P_DEV_CSIS1) += dev-csis1.o
obj-$(CONFIG_S5P_SETUP_MIPIPHY) += setup-mipiphy.o

View file

@ -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);
}