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video: exynos_dp: Make dp_regs global

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dp_regs variable was redundantly defined across all the functions in
the driver even though it contains just the same address. We make it
global and initialize it once using exynos_dp_set_base_addr().
>From then on, other funtions can use the address stored in the global variable.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Ajay Kumar 2013-02-21 23:53:04 +00:00 committed by Minkyu Kang
parent 539d8f49df
commit beded3d13a
3 changed files with 10 additions and 45 deletions
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2
drivers/video/exynos_dp.c
View File

@ -876,6 +876,8 @@ unsigned int exynos_init_dp(void)
return -EFAULT;
}
exynos_dp_set_base_addr();
exynos_dp_disp_info(&edp_info->disp_info);
exynos_set_dp_phy(1);

52
drivers/video/exynos_dp_lowlevel.c
View File

@ -26,10 +26,16 @@
#include <asm/arch/dp_info.h>
#include <asm/arch/dp.h>
struct exynos_dp *dp_regs;
void exynos_dp_set_base_addr(void)
{
dp_regs = (struct exynos_dp *)samsung_get_base_dp();
}
static void exynos_dp_enable_video_input(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->video_ctl1);
reg &= ~VIDEO_EN_MASK;
@ -47,7 +53,6 @@ void exynos_dp_enable_video_bist(unsigned int enable)
{
/*enable video bist*/
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->video_ctl4);
reg &= ~VIDEO_BIST_MASK;
@ -64,7 +69,6 @@ void exynos_dp_enable_video_bist(unsigned int enable)
void exynos_dp_enable_video_mute(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->video_ctl1);
reg &= ~(VIDEO_MUTE_MASK);
@ -80,7 +84,6 @@ void exynos_dp_enable_video_mute(unsigned int enable)
static void exynos_dp_init_analog_param(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/*
* Set termination
@ -129,7 +132,6 @@ static void exynos_dp_init_analog_param(void)
static void exynos_dp_init_interrupt(void)
{
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Set interrupt registers to initial states */
/*
@ -158,7 +160,6 @@ static void exynos_dp_init_interrupt(void)
void exynos_dp_reset(void)
{
unsigned int reg_func_1;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/*dp tx sw reset*/
writel(RESET_DP_TX, &dp_regs->tx_sw_reset);
@ -186,7 +187,6 @@ void exynos_dp_reset(void)
void exynos_dp_enable_sw_func(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->func_en1);
reg &= ~(SW_FUNC_EN_N);
@ -202,7 +202,6 @@ void exynos_dp_enable_sw_func(unsigned int enable)
unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->phy_pd);
switch (block) {
@ -256,7 +255,6 @@ unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable)
unsigned int exynos_dp_get_pll_lock_status(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->debug_ctl);
@ -269,7 +267,6 @@ unsigned int exynos_dp_get_pll_lock_status(void)
static void exynos_dp_set_pll_power(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->pll_ctl);
reg &= ~(DP_PLL_PD);
@ -285,7 +282,6 @@ int exynos_dp_init_analog_func(void)
int ret = EXYNOS_DP_SUCCESS;
unsigned int retry_cnt = 10;
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/*Power On All Analog block */
exynos_dp_set_analog_power_down(POWER_ALL, DP_DISABLE);
@ -335,7 +331,6 @@ int exynos_dp_init_analog_func(void)
void exynos_dp_init_hpd(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear interrupts releated to Hot Plug Dectect */
reg = HOTPLUG_CHG | HPD_LOST | PLUG;
@ -354,7 +349,6 @@ void exynos_dp_init_hpd(void)
static inline void exynos_dp_reset_aux(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Disable AUX channel module */
reg = readl(&dp_regs->func_en2);
@ -367,7 +361,6 @@ static inline void exynos_dp_reset_aux(void)
void exynos_dp_init_aux(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear inerrupts related to AUX channel */
reg = RPLY_RECEIV | AUX_ERR;
@ -395,7 +388,6 @@ void exynos_dp_init_aux(void)
void exynos_dp_config_interrupt(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* 0: mask, 1: unmask */
reg = COMMON_INT_MASK_1;
@ -419,7 +411,6 @@ void exynos_dp_config_interrupt(void)
unsigned int exynos_dp_get_plug_in_status(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->sys_ctl3);
if (reg & HPD_STATUS)
@ -449,7 +440,6 @@ unsigned int exynos_dp_start_aux_transaction(void)
unsigned int reg;
unsigned int ret = 0;
unsigned int retry_cnt;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Enable AUX CH operation */
reg = readl(&dp_regs->aux_ch_ctl2);
@ -498,7 +488,6 @@ unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr,
unsigned char data)
{
unsigned int reg, ret;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear AUX CH data buffer */
reg = BUF_CLR;
@ -539,7 +528,6 @@ unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr,
{
unsigned int reg;
int retval;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear AUX CH data buffer */
reg = BUF_CLR;
@ -583,7 +571,6 @@ unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr,
unsigned int cur_data_idx;
unsigned int retry_cnt;
unsigned int ret = 0;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear AUX CH data buffer */
reg = BUF_CLR;
@ -649,7 +636,6 @@ unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr,
unsigned int cur_data_idx;
unsigned int retry_cnt;
unsigned int ret = 0;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear AUX CH data buffer */
reg = BUF_CLR;
@ -711,7 +697,6 @@ int exynos_dp_select_i2c_device(unsigned int device_addr,
{
unsigned int reg;
int retval;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Set EDID device address */
reg = device_addr;
@ -746,7 +731,6 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr,
unsigned int reg;
int i;
int retval;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
for (i = 0; i < 10; i++) {
/* Clear AUX CH data buffer */
@ -790,7 +774,6 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
unsigned int cur_data_idx;
unsigned int defer = 0;
int retval = 0;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
for (i = 0; i < count; i += 16) { /* use 16 burst */
for (j = 0; j < 100; j++) {
@ -854,7 +837,6 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr,
void exynos_dp_reset_macro(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->phy_test);
reg |= MACRO_RST;
@ -870,7 +852,6 @@ void exynos_dp_reset_macro(void)
void exynos_dp_set_link_bandwidth(unsigned char bwtype)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = (unsigned int)bwtype;
@ -883,7 +864,6 @@ unsigned char exynos_dp_get_link_bandwidth(void)
{
unsigned char ret;
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->link_bw_set);
ret = (unsigned char)reg;
@ -894,7 +874,6 @@ unsigned char exynos_dp_get_link_bandwidth(void)
void exynos_dp_set_lane_count(unsigned char count)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = (unsigned int)count;
@ -906,7 +885,6 @@ void exynos_dp_set_lane_count(unsigned char count)
unsigned int exynos_dp_get_lane_count(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->lane_count_set);
@ -915,7 +893,6 @@ unsigned int exynos_dp_get_lane_count(void)
unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt)
{
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
unsigned int reg_list[DP_LANE_CNT_4] = {
(unsigned int)&dp_regs->ln0_link_training_ctl,
(unsigned int)&dp_regs->ln1_link_training_ctl,
@ -929,7 +906,6 @@ unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt)
void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val,
unsigned char lanecnt)
{
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
unsigned int reg_list[DP_LANE_CNT_4] = {
(unsigned int)&dp_regs->ln0_link_training_ctl,
(unsigned int)&dp_regs->ln1_link_training_ctl,
@ -944,7 +920,6 @@ void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt)
{
unsigned char i;
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
unsigned int reg_list[DP_LANE_CNT_4] = {
(unsigned int)&dp_regs->ln0_link_training_ctl,
(unsigned int)&dp_regs->ln1_link_training_ctl,
@ -967,7 +942,6 @@ void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt)
void exynos_dp_set_training_pattern(unsigned int pattern)
{
unsigned int reg = 0;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
switch (pattern) {
case PRBS7:
@ -996,7 +970,6 @@ void exynos_dp_set_training_pattern(unsigned int pattern)
void exynos_dp_enable_enhanced_mode(unsigned char enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->sys_ctl4);
reg &= ~ENHANCED;
@ -1010,7 +983,6 @@ void exynos_dp_enable_enhanced_mode(unsigned char enable)
void exynos_dp_enable_scrambling(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->training_ptn_set);
reg &= ~(SCRAMBLING_DISABLE);
@ -1024,7 +996,6 @@ void exynos_dp_enable_scrambling(unsigned int enable)
int exynos_dp_init_video(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Clear VID_CLK_CHG[1] and VID_FORMAT_CHG[3] and VSYNC_DET[7] */
reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
@ -1040,7 +1011,6 @@ int exynos_dp_init_video(void)
void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Video Slave mode setting */
reg = readl(&dp_regs->func_en1);
@ -1074,7 +1044,6 @@ void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info)
void exynos_dp_set_video_color_format(struct edp_video_info *video_info)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Configure the input color depth, color space, dynamic range */
reg = (video_info->dynamic_range << IN_D_RANGE_SHIFT) |
@ -1097,7 +1066,6 @@ int exynos_dp_config_video_bist(struct edp_device_info *edp_info)
unsigned int reg;
unsigned int bist_type = 0;
struct edp_video_info video_info = edp_info->video_info;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* For master mode, you don't need to set the video format */
if (video_info.master_mode == 0) {
@ -1186,7 +1154,6 @@ int exynos_dp_config_video_bist(struct edp_device_info *edp_info)
unsigned int exynos_dp_is_slave_video_stream_clock_on(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Update Video stream clk detect status */
reg = readl(&dp_regs->sys_ctl1);
@ -1206,7 +1173,6 @@ void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value,
unsigned int n_value)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
if (type == REGISTER_M) {
reg = readl(&dp_regs->sys_ctl4);
@ -1235,7 +1201,6 @@ void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value,
void exynos_dp_set_video_timing_mode(unsigned int type)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->video_ctl10);
reg &= ~FORMAT_SEL;
@ -1249,7 +1214,6 @@ void exynos_dp_set_video_timing_mode(unsigned int type)
void exynos_dp_enable_video_master(unsigned int enable)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
reg = readl(&dp_regs->soc_general_ctl);
if (enable) {
@ -1266,7 +1230,6 @@ void exynos_dp_enable_video_master(unsigned int enable)
void exynos_dp_start_video(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Enable Video input and disable Mute */
reg = readl(&dp_regs->video_ctl1);
@ -1277,7 +1240,6 @@ void exynos_dp_start_video(void)
unsigned int exynos_dp_is_video_stream_on(void)
{
unsigned int reg;
struct exynos_dp *dp_regs = (struct exynos_dp *)samsung_get_base_dp();
/* Update STRM_VALID */
reg = readl(&dp_regs->sys_ctl3);

1
drivers/video/exynos_dp_lowlevel.h
View File

@ -76,5 +76,6 @@ void exynos_dp_set_video_timing_mode(unsigned int type);
void exynos_dp_enable_video_master(unsigned int enable);
void exynos_dp_start_video(void);
unsigned int exynos_dp_is_video_stream_on(void);
void exynos_dp_set_base_addr(void);
#endif /* _EXYNOS_DP_LOWLEVEL_H */