Merge branch 'master' of git://www.denx.de/git/u-boot-imx

[karo-tx-uboot.git] / drivers / video / exynos_dp_lowlevel.c

diff --git a/drivers/video/exynos_dp_lowlevel.c b/drivers/video/exynos_dp_lowlevel.c
index 7b54c8084c83da78ae780633bfb8744f710baa33..bf0ea108e89352395abf40db3da0b92c11f8ccf1 100644 (file)
--- a/drivers/video/exynos_dp_lowlevel.c
+++ b/drivers/video/exynos_dp_lowlevel.c
@@ -3,20 +3,7 @@
  *
  * Author: Donghwa Lee <dh09.lee@samsung.com>
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <config.h>
@@ -25,11 +12,34 @@
 #include <asm/arch/cpu.h>
 #include <asm/arch/dp_info.h>
 #include <asm/arch/dp.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+
+/* Declare global data pointer */
+DECLARE_GLOBAL_DATA_PTR;
+
+struct exynos_dp *dp_regs;
+
+void exynos_dp_set_base_addr(void)
+{
+#ifdef CONFIG_OF_CONTROL
+       unsigned int node = fdtdec_next_compatible(gd->fdt_blob,
+                                       0, COMPAT_SAMSUNG_EXYNOS5_DP);
+       if (node <= 0)
+               debug("exynos_dp: Can't get device node for dp\n");
+
+       dp_regs = (struct exynos_dp *)fdtdec_get_addr(gd->fdt_blob,
+                                                               node, "reg");
+       if (dp_regs == NULL)
+               debug("Can't get the DP base address\n");
+#else
+       dp_regs = (struct exynos_dp *)samsung_get_base_dp();
+#endif
+}
 
 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 +57,6 @@ 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 +73,6 @@ 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 +88,6 @@ 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 +136,6 @@ 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 +164,6 @@ 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 +191,6 @@ 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 +206,6 @@ 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 +259,6 @@ 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 +271,6 @@ 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 +286,6 @@ 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 +335,6 @@ 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 +353,6 @@ 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 +365,6 @@ 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 +392,6 @@ 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 +415,6 @@ 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 +444,6 @@ 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 +492,6 @@ 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 +532,6 @@ 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 +575,6 @@ 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 +640,6 @@ 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 +701,6 @@ 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 +735,6 @@ 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 +778,6 @@ 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 +841,6 @@ 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 +856,6 @@ 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 +868,6 @@ 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 +878,6 @@ 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 +889,6 @@ 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 +897,6 @@ 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 +910,6 @@ 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 +924,6 @@ 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 +946,6 @@ 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 +974,6 @@ 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 +987,6 @@ 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 +1000,6 @@ 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 +1015,6 @@ 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 +1048,6 @@ 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 +1070,6 @@ 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 +1158,6 @@ 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 +1177,6 @@ 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 +1205,6 @@ 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 +1218,6 @@ 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 +1234,6 @@ 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 +1244,6 @@ 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);