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/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "hdmi.h"
struct hdmi_phy_8x74 {
struct hdmi_phy base;
struct hdmi *hdmi;
void __iomem *mmio;
};
#define to_hdmi_phy_8x74(x) container_of(x, struct hdmi_phy_8x74, base)
static void phy_write(struct hdmi_phy_8x74 *phy, u32 reg, u32 data)
{
msm_writel(data, phy->mmio + reg);
}
//static u32 phy_read(struct hdmi_phy_8x74 *phy, u32 reg)
//{
// return msm_readl(phy->mmio + reg);
//}
static void hdmi_phy_8x74_destroy(struct hdmi_phy *phy)
{
struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
kfree(phy_8x74);
}
static void hdmi_phy_8x74_reset(struct hdmi_phy *phy)
{
struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
struct hdmi *hdmi = phy_8x74->hdmi;
unsigned int val;
/* NOTE that HDMI_PHY_CTL is in core mmio, not phy mmio: */
val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET);
} else {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET);
}
if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
} else {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET_PLL);
}
msleep(100);
if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET);
} else {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET);
}
if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
/* pull high */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val | HDMI_PHY_CTRL_SW_RESET_PLL);
} else {
/* pull low */
hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
}
}
static void hdmi_phy_8x74_powerup(struct hdmi_phy *phy,
unsigned long int pixclock)
{
struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
phy_write(phy_8x74, REG_HDMI_8x74_ANA_CFG0, 0x1b);
phy_write(phy_8x74, REG_HDMI_8x74_ANA_CFG1, 0xf2);
phy_write(phy_8x74, REG_HDMI_8x74_BIST_CFG0, 0x0);
phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN0, 0x0);
phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN1, 0x0);
phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN2, 0x0);
phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN3, 0x0);
phy_write(phy_8x74, REG_HDMI_8x74_PD_CTRL1, 0x20);
}
static void hdmi_phy_8x74_powerdown(struct hdmi_phy *phy)
{
struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
phy_write(phy_8x74, REG_HDMI_8x74_PD_CTRL0, 0x7f);
}
static const struct hdmi_phy_funcs hdmi_phy_8x74_funcs = {
.destroy = hdmi_phy_8x74_destroy,
.reset = hdmi_phy_8x74_reset,
.powerup = hdmi_phy_8x74_powerup,
.powerdown = hdmi_phy_8x74_powerdown,
};
struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi)
{
struct hdmi_phy_8x74 *phy_8x74;
struct hdmi_phy *phy = NULL;
int ret;
phy_8x74 = kzalloc(sizeof(*phy_8x74), GFP_KERNEL);
if (!phy_8x74) {
ret = -ENOMEM;
goto fail;
}
phy = &phy_8x74->base;
phy->funcs = &hdmi_phy_8x74_funcs;
phy_8x74->hdmi = hdmi;
/* for 8x74, the phy mmio is mapped separately: */
phy_8x74->mmio = msm_ioremap(hdmi->pdev,
"phy_physical", "HDMI_8x74");
if (IS_ERR(phy_8x74->mmio)) {
ret = PTR_ERR(phy_8x74->mmio);
goto fail;
}
return phy;
fail:
if (phy)
hdmi_phy_8x74_destroy(phy);
return ERR_PTR(ret);
}
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