From 08a7aa1e5be7059d680fedf0a885655a895f638e Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 21 Feb 2016 21:08:38 -0700 Subject: exynos: video: Move driver files into their own directory Move all the exynos video drivers into one place for ease of maintenance. Signed-off-by: Simon Glass Acked-by: Anatolij Gustschin Signed-off-by: Minkyu Kang --- drivers/video/exynos/exynos_dp_lowlevel.c | 1257 +++++++++++++++++++++++++++++ 1 file changed, 1257 insertions(+) create mode 100644 drivers/video/exynos/exynos_dp_lowlevel.c (limited to 'drivers/video/exynos/exynos_dp_lowlevel.c') diff --git a/drivers/video/exynos/exynos_dp_lowlevel.c b/drivers/video/exynos/exynos_dp_lowlevel.c new file mode 100644 index 0000000000..acb5bc8eb7 --- /dev/null +++ b/drivers/video/exynos/exynos_dp_lowlevel.c @@ -0,0 +1,1257 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * + * Author: Donghwa Lee + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Declare global data pointer */ +DECLARE_GLOBAL_DATA_PTR; + +struct exynos_dp *dp_regs; + +void exynos_dp_set_base_addr(void) +{ +#if CONFIG_IS_ENABLED(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; + + reg = readl(&dp_regs->video_ctl1); + reg &= ~VIDEO_EN_MASK; + + /* enable video input */ + if (enable) + reg |= VIDEO_EN_MASK; + + writel(reg, &dp_regs->video_ctl1); + + return; +} + +void exynos_dp_enable_video_bist(unsigned int enable) +{ + /* enable video bist */ + unsigned int reg; + + reg = readl(&dp_regs->video_ctl4); + reg &= ~VIDEO_BIST_MASK; + + /* enable video bist */ + if (enable) + reg |= VIDEO_BIST_MASK; + + writel(reg, &dp_regs->video_ctl4); + + return; +} + +void exynos_dp_enable_video_mute(unsigned int enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->video_ctl1); + reg &= ~(VIDEO_MUTE_MASK); + if (enable) + reg |= VIDEO_MUTE_MASK; + + writel(reg, &dp_regs->video_ctl1); + + return; +} + + +static void exynos_dp_init_analog_param(void) +{ + unsigned int reg; + + /* + * Set termination + * Normal bandgap, Normal swing, Tx terminal registor 61 ohm + * 24M Phy clock, TX digital logic power is 100:1.0625V + */ + reg = SEL_BG_NEW_BANDGAP | TX_TERMINAL_CTRL_61_OHM | + SWING_A_30PER_G_NORMAL; + writel(reg, &dp_regs->analog_ctl1); + + reg = SEL_24M | TX_DVDD_BIT_1_0625V; + writel(reg, &dp_regs->analog_ctl2); + + /* + * Set power source for internal clk driver to 1.0625v. + * Select current reference of TX driver current to 00:Ipp/2+Ic/2. + * Set VCO range of PLL +- 0uA + */ + reg = DRIVE_DVDD_BIT_1_0625V | SEL_CURRENT_DEFAULT | VCO_BIT_000_MICRO; + writel(reg, &dp_regs->analog_ctl3); + + /* + * Set AUX TX terminal resistor to 102 ohm + * Set AUX channel amplitude control + */ + reg = PD_RING_OSC | AUX_TERMINAL_CTRL_52_OHM | TX_CUR1_2X | TX_CUR_4_MA; + writel(reg, &dp_regs->pll_filter_ctl1); + + /* + * PLL loop filter bandwidth + * For 2.7Gbps: 175KHz, For 1.62Gbps: 234KHz + * PLL digital power select: 1.2500V + */ + reg = CH3_AMP_0_MV | CH2_AMP_0_MV | CH1_AMP_0_MV | CH0_AMP_0_MV; + + writel(reg, &dp_regs->amp_tuning_ctl); + + /* + * PLL loop filter bandwidth + * For 2.7Gbps: 175KHz, For 1.62Gbps: 234KHz + * PLL digital power select: 1.1250V + */ + reg = DP_PLL_LOOP_BIT_DEFAULT | DP_PLL_REF_BIT_1_1250V; + writel(reg, &dp_regs->pll_ctl); +} + +static void exynos_dp_init_interrupt(void) +{ + /* Set interrupt registers to initial states */ + + /* + * Disable interrupt + * INT pin assertion polarity. It must be configured + * correctly according to ICU setting. + * 1 = assert high, 0 = assert low + */ + writel(INT_POL, &dp_regs->int_ctl); + + /* Clear pending registers */ + writel(0xff, &dp_regs->common_int_sta1); + writel(0xff, &dp_regs->common_int_sta2); + writel(0xff, &dp_regs->common_int_sta3); + writel(0xff, &dp_regs->common_int_sta4); + writel(0xff, &dp_regs->int_sta); + + /* 0:mask,1: unmask */ + writel(0x00, &dp_regs->int_sta_mask1); + writel(0x00, &dp_regs->int_sta_mask2); + writel(0x00, &dp_regs->int_sta_mask3); + writel(0x00, &dp_regs->int_sta_mask4); + writel(0x00, &dp_regs->int_sta_mask); +} + +void exynos_dp_reset(void) +{ + unsigned int reg_func_1; + + /* dp tx sw reset */ + writel(RESET_DP_TX, &dp_regs->tx_sw_reset); + + exynos_dp_enable_video_input(DP_DISABLE); + exynos_dp_enable_video_bist(DP_DISABLE); + exynos_dp_enable_video_mute(DP_DISABLE); + + /* software reset */ + reg_func_1 = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | + AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | + HDCP_FUNC_EN_N | SW_FUNC_EN_N; + + writel(reg_func_1, &dp_regs->func_en1); + writel(reg_func_1, &dp_regs->func_en2); + + mdelay(1); + + exynos_dp_init_analog_param(); + exynos_dp_init_interrupt(); + + return; +} + +void exynos_dp_enable_sw_func(unsigned int enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->func_en1); + reg &= ~(SW_FUNC_EN_N); + + if (!enable) + reg |= SW_FUNC_EN_N; + + writel(reg, &dp_regs->func_en1); + + return; +} + +unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->phy_pd); + switch (block) { + case AUX_BLOCK: + reg &= ~(AUX_PD); + if (enable) + reg |= AUX_PD; + break; + case CH0_BLOCK: + reg &= ~(CH0_PD); + if (enable) + reg |= CH0_PD; + break; + case CH1_BLOCK: + reg &= ~(CH1_PD); + if (enable) + reg |= CH1_PD; + break; + case CH2_BLOCK: + reg &= ~(CH2_PD); + if (enable) + reg |= CH2_PD; + break; + case CH3_BLOCK: + reg &= ~(CH3_PD); + if (enable) + reg |= CH3_PD; + break; + case ANALOG_TOTAL: + reg &= ~PHY_PD; + if (enable) + reg |= PHY_PD; + break; + case POWER_ALL: + reg &= ~(PHY_PD | AUX_PD | CH0_PD | CH1_PD | CH2_PD | + CH3_PD); + if (enable) + reg |= (PHY_PD | AUX_PD | CH0_PD | CH1_PD | + CH2_PD | CH3_PD); + break; + default: + printf("DP undefined block number : %d\n", block); + return -1; + } + + writel(reg, &dp_regs->phy_pd); + + return 0; +} + +unsigned int exynos_dp_get_pll_lock_status(void) +{ + unsigned int reg; + + reg = readl(&dp_regs->debug_ctl); + + if (reg & PLL_LOCK) + return PLL_LOCKED; + else + return PLL_UNLOCKED; +} + +static void exynos_dp_set_pll_power(unsigned int enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->pll_ctl); + reg &= ~(DP_PLL_PD); + + if (!enable) + reg |= DP_PLL_PD; + + writel(reg, &dp_regs->pll_ctl); +} + +int exynos_dp_init_analog_func(void) +{ + int ret = EXYNOS_DP_SUCCESS; + unsigned int retry_cnt = 10; + unsigned int reg; + + /* Power On All Analog block */ + exynos_dp_set_analog_power_down(POWER_ALL, DP_DISABLE); + + reg = PLL_LOCK_CHG; + writel(reg, &dp_regs->common_int_sta1); + + reg = readl(&dp_regs->debug_ctl); + reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL); + writel(reg, &dp_regs->debug_ctl); + + /* Assert DP PLL Reset */ + reg = readl(&dp_regs->pll_ctl); + reg |= DP_PLL_RESET; + writel(reg, &dp_regs->pll_ctl); + + mdelay(1); + + /* Deassert DP PLL Reset */ + reg = readl(&dp_regs->pll_ctl); + reg &= ~(DP_PLL_RESET); + writel(reg, &dp_regs->pll_ctl); + + exynos_dp_set_pll_power(DP_ENABLE); + + while (exynos_dp_get_pll_lock_status() == PLL_UNLOCKED) { + mdelay(1); + retry_cnt--; + if (retry_cnt == 0) { + printf("DP dp's pll lock failed : retry : %d\n", + retry_cnt); + return -EINVAL; + } + } + + debug("dp's pll lock success(%d)\n", retry_cnt); + + /* Enable Serdes FIFO function and Link symbol clock domain module */ + reg = readl(&dp_regs->func_en2); + reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N + | AUX_FUNC_EN_N); + writel(reg, &dp_regs->func_en2); + + return ret; +} + +void exynos_dp_init_hpd(void) +{ + unsigned int reg; + + /* Clear interrupts related to Hot Plug Detect */ + reg = HOTPLUG_CHG | HPD_LOST | PLUG; + writel(reg, &dp_regs->common_int_sta4); + + reg = INT_HPD; + writel(reg, &dp_regs->int_sta); + + reg = readl(&dp_regs->sys_ctl3); + reg &= ~(F_HPD | HPD_CTRL); + writel(reg, &dp_regs->sys_ctl3); + + return; +} + +static inline void exynos_dp_reset_aux(void) +{ + unsigned int reg; + + /* Disable AUX channel module */ + reg = readl(&dp_regs->func_en2); + reg |= AUX_FUNC_EN_N; + writel(reg, &dp_regs->func_en2); + + return; +} + +void exynos_dp_init_aux(void) +{ + unsigned int reg; + + /* Clear interrupts related to AUX channel */ + reg = RPLY_RECEIV | AUX_ERR; + writel(reg, &dp_regs->int_sta); + + exynos_dp_reset_aux(); + + /* Disable AUX transaction H/W retry */ + reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(3)| + AUX_HW_RETRY_INTERVAL_600_MICROSECONDS; + writel(reg, &dp_regs->aux_hw_retry_ctl); + + /* Receive AUX Channel DEFER commands equal to DEFER_COUNT*64 */ + reg = DEFER_CTRL_EN | DEFER_COUNT(1); + writel(reg, &dp_regs->aux_ch_defer_ctl); + + /* Enable AUX channel module */ + reg = readl(&dp_regs->func_en2); + reg &= ~AUX_FUNC_EN_N; + writel(reg, &dp_regs->func_en2); + + return; +} + +void exynos_dp_config_interrupt(void) +{ + unsigned int reg; + + /* 0: mask, 1: unmask */ + reg = COMMON_INT_MASK_1; + writel(reg, &dp_regs->common_int_mask1); + + reg = COMMON_INT_MASK_2; + writel(reg, &dp_regs->common_int_mask2); + + reg = COMMON_INT_MASK_3; + writel(reg, &dp_regs->common_int_mask3); + + reg = COMMON_INT_MASK_4; + writel(reg, &dp_regs->common_int_mask4); + + reg = INT_STA_MASK; + writel(reg, &dp_regs->int_sta_mask); + + return; +} + +unsigned int exynos_dp_get_plug_in_status(void) +{ + unsigned int reg; + + reg = readl(&dp_regs->sys_ctl3); + if (reg & HPD_STATUS) + return 0; + + return -1; +} + +unsigned int exynos_dp_detect_hpd(void) +{ + int timeout_loop = DP_TIMEOUT_LOOP_COUNT; + + mdelay(2); + + while (exynos_dp_get_plug_in_status() != 0) { + if (timeout_loop == 0) + return -EINVAL; + mdelay(10); + timeout_loop--; + } + + return EXYNOS_DP_SUCCESS; +} + +unsigned int exynos_dp_start_aux_transaction(void) +{ + unsigned int reg; + unsigned int ret = 0; + unsigned int retry_cnt; + + /* Enable AUX CH operation */ + reg = readl(&dp_regs->aux_ch_ctl2); + reg |= AUX_EN; + writel(reg, &dp_regs->aux_ch_ctl2); + + retry_cnt = 10; + while (retry_cnt) { + reg = readl(&dp_regs->int_sta); + if (!(reg & RPLY_RECEIV)) { + if (retry_cnt == 0) { + printf("DP Reply Timeout!!\n"); + ret = -EAGAIN; + return ret; + } + mdelay(1); + retry_cnt--; + } else + break; + } + + /* Clear interrupt source for AUX CH command reply */ + writel(reg, &dp_regs->int_sta); + + /* Clear interrupt source for AUX CH access error */ + reg = readl(&dp_regs->int_sta); + if (reg & AUX_ERR) { + printf("DP Aux Access Error\n"); + writel(AUX_ERR, &dp_regs->int_sta); + ret = -EAGAIN; + return ret; + } + + /* Check AUX CH error access status */ + reg = readl(&dp_regs->aux_ch_sta); + if ((reg & AUX_STATUS_MASK) != 0) { + debug("DP AUX CH error happens: %x\n", reg & AUX_STATUS_MASK); + ret = -EAGAIN; + return ret; + } + + return EXYNOS_DP_SUCCESS; +} + +unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, + unsigned char data) +{ + unsigned int reg, ret; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, &dp_regs->aux_addr_19_16); + + /* Write data buffer */ + reg = (unsigned int)data; + writel(reg, &dp_regs->buf_data0); + + /* + * Set DisplayPort transaction and write 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + printf("DP Aux transaction failed\n"); + return ret; + } + + return ret; +} + +unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, + unsigned char *data) +{ + unsigned int reg; + int retval; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr); + writel(reg, &dp_regs->aux_addr_19_16); + + /* + * Set DisplayPort transaction and read 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (!retval) + debug("DP Aux Transaction fail!\n"); + + /* Read data buffer */ + reg = readl(&dp_regs->buf_data0); + *data = (unsigned char)(reg & 0xff); + + return retval; +} + +unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + unsigned int reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + unsigned int retry_cnt; + unsigned int ret = 0; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + retry_cnt = 5; + while (retry_cnt) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_19_16); + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = data[start_offset + cur_data_idx]; + writel(reg, (unsigned int)&dp_regs->buf_data0 + + (4 * cur_data_idx)); + } + /* + * Set DisplayPort transaction and write + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP Aux Transaction failed\n"); + return ret; + } + retry_cnt--; + } else + break; + } + start_offset += cur_data_count; + } + + return ret; +} + +unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr, + unsigned int count, + unsigned char data[]) +{ + unsigned int reg; + unsigned int start_offset; + unsigned int cur_data_count; + unsigned int cur_data_idx; + unsigned int retry_cnt; + unsigned int ret = 0; + + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + start_offset = 0; + while (start_offset < count) { + /* Buffer size of AUX CH is 16 * 4bytes */ + if ((count - start_offset) > 16) + cur_data_count = 16; + else + cur_data_count = count - start_offset; + + retry_cnt = 5; + while (retry_cnt) { + /* Select DPCD device address */ + reg = AUX_ADDR_7_0(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_7_0); + reg = AUX_ADDR_15_8(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_15_8); + reg = AUX_ADDR_19_16(reg_addr + start_offset); + writel(reg, &dp_regs->aux_addr_19_16); + /* + * Set DisplayPort transaction and read + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(cur_data_count) | + AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + ret = exynos_dp_start_aux_transaction(); + if (ret != EXYNOS_DP_SUCCESS) { + if (retry_cnt == 0) { + printf("DP Aux Transaction failed\n"); + return ret; + } + retry_cnt--; + } else + break; + } + + for (cur_data_idx = 0; cur_data_idx < cur_data_count; + cur_data_idx++) { + reg = readl((unsigned int)&dp_regs->buf_data0 + + 4 * cur_data_idx); + data[start_offset + cur_data_idx] = (unsigned char)reg; + } + + start_offset += cur_data_count; + } + + return ret; +} + +int exynos_dp_select_i2c_device(unsigned int device_addr, + unsigned int reg_addr) +{ + unsigned int reg; + int retval; + + /* Set EDID device address */ + reg = device_addr; + writel(reg, &dp_regs->aux_addr_7_0); + writel(0x0, &dp_regs->aux_addr_15_8); + writel(0x0, &dp_regs->aux_addr_19_16); + + /* Set offset from base address of EDID device */ + writel(reg_addr, &dp_regs->buf_data0); + + /* + * Set I2C transaction and write address + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT | + AUX_TX_COMM_WRITE; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval != 0) + printf("%s: DP Aux Transaction fail!\n", __func__); + + return retval; +} + +int exynos_dp_read_byte_from_i2c(unsigned int device_addr, + unsigned int reg_addr, + unsigned int *data) +{ + unsigned int reg; + int i; + int retval; + + for (i = 0; i < 10; i++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Select EDID device */ + retval = exynos_dp_select_i2c_device(device_addr, reg_addr); + if (retval != 0) { + printf("DP Select EDID device fail. retry !\n"); + continue; + } + + /* + * Set I2C transaction and read data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval != EXYNOS_DP_SUCCESS) + printf("%s: DP Aux Transaction fail!\n", __func__); + } + + /* Read data */ + if (retval == 0) + *data = readl(&dp_regs->buf_data0); + + return retval; +} + +int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, + unsigned int reg_addr, unsigned int count, unsigned char edid[]) +{ + unsigned int reg; + unsigned int i, j; + unsigned int cur_data_idx; + unsigned int defer = 0; + int retval = 0; + + for (i = 0; i < count; i += 16) { /* use 16 burst */ + for (j = 0; j < 100; j++) { + /* Clear AUX CH data buffer */ + reg = BUF_CLR; + writel(reg, &dp_regs->buffer_data_ctl); + + /* Set normal AUX CH command */ + reg = readl(&dp_regs->aux_ch_ctl2); + reg &= ~ADDR_ONLY; + writel(reg, &dp_regs->aux_ch_ctl2); + + /* + * If Rx sends defer, Tx sends only reads + * request without sending addres + */ + if (!defer) + retval = + exynos_dp_select_i2c_device(device_addr, + reg_addr + i); + else + defer = 0; + + if (retval == EXYNOS_DP_SUCCESS) { + /* + * Set I2C transaction and write data + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_LENGTH(16) | + AUX_TX_COMM_I2C_TRANSACTION | + AUX_TX_COMM_READ; + writel(reg, &dp_regs->aux_ch_ctl1); + + /* Start AUX transaction */ + retval = exynos_dp_start_aux_transaction(); + if (retval == 0) + break; + else + printf("DP Aux Transaction fail!\n"); + } + /* Check if Rx sends defer */ + reg = readl(&dp_regs->aux_rx_comm); + if (reg == AUX_RX_COMM_AUX_DEFER || + reg == AUX_RX_COMM_I2C_DEFER) { + printf("DP Defer: %d\n", reg); + defer = 1; + } + } + + for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) { + reg = readl((unsigned int)&dp_regs->buf_data0 + + 4 * cur_data_idx); + edid[i + cur_data_idx] = (unsigned char)reg; + } + } + + return retval; +} + +void exynos_dp_reset_macro(void) +{ + unsigned int reg; + + reg = readl(&dp_regs->phy_test); + reg |= MACRO_RST; + writel(reg, &dp_regs->phy_test); + + /* 10 us is the minimum Macro reset time. */ + mdelay(1); + + reg &= ~MACRO_RST; + writel(reg, &dp_regs->phy_test); +} + +void exynos_dp_set_link_bandwidth(unsigned char bwtype) +{ + unsigned int reg; + + reg = (unsigned int)bwtype; + + /* Set bandwidth to 2.7G or 1.62G */ + if ((bwtype == DP_LANE_BW_1_62) || (bwtype == DP_LANE_BW_2_70)) + writel(reg, &dp_regs->link_bw_set); +} + +unsigned char exynos_dp_get_link_bandwidth(void) +{ + unsigned char ret; + unsigned int reg; + + reg = readl(&dp_regs->link_bw_set); + ret = (unsigned char)reg; + + return ret; +} + +void exynos_dp_set_lane_count(unsigned char count) +{ + unsigned int reg; + + reg = (unsigned int)count; + + if ((count == DP_LANE_CNT_1) || (count == DP_LANE_CNT_2) || + (count == DP_LANE_CNT_4)) + writel(reg, &dp_regs->lane_count_set); +} + +unsigned int exynos_dp_get_lane_count(void) +{ + unsigned int reg; + + reg = readl(&dp_regs->lane_count_set); + + return reg; +} + +unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt) +{ + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + + return readl(reg_list[lanecnt]); +} + +void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val, + unsigned char lanecnt) +{ + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + + writel(request_val, reg_list[lanecnt]); +} + +void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt) +{ + unsigned char i; + unsigned int reg; + unsigned int reg_list[DP_LANE_CNT_4] = { + (unsigned int)&dp_regs->ln0_link_training_ctl, + (unsigned int)&dp_regs->ln1_link_training_ctl, + (unsigned int)&dp_regs->ln2_link_training_ctl, + (unsigned int)&dp_regs->ln3_link_training_ctl, + }; + unsigned int reg_shift[DP_LANE_CNT_4] = { + PRE_EMPHASIS_SET_0_SHIFT, + PRE_EMPHASIS_SET_1_SHIFT, + PRE_EMPHASIS_SET_2_SHIFT, + PRE_EMPHASIS_SET_3_SHIFT + }; + + for (i = 0; i < lanecnt; i++) { + reg = level << reg_shift[i]; + writel(reg, reg_list[i]); + } +} + +void exynos_dp_set_training_pattern(unsigned int pattern) +{ + unsigned int reg = 0; + + switch (pattern) { + case PRBS7: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7; + break; + case D10_2: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2; + break; + case TRAINING_PTN1: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1; + break; + case TRAINING_PTN2: + reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2; + break; + case DP_NONE: + reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_DISABLE | + SW_TRAINING_PATTERN_SET_NORMAL; + break; + default: + break; + } + + writel(reg, &dp_regs->training_ptn_set); +} + +void exynos_dp_enable_enhanced_mode(unsigned char enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->sys_ctl4); + reg &= ~ENHANCED; + + if (enable) + reg |= ENHANCED; + + writel(reg, &dp_regs->sys_ctl4); +} + +void exynos_dp_enable_scrambling(unsigned int enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->training_ptn_set); + reg &= ~(SCRAMBLING_DISABLE); + + if (!enable) + reg |= SCRAMBLING_DISABLE; + + writel(reg, &dp_regs->training_ptn_set); +} + +int exynos_dp_init_video(void) +{ + unsigned int reg; + + /* Clear VID_CLK_CHG[1] and VID_FORMAT_CHG[3] and VSYNC_DET[7] */ + reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; + writel(reg, &dp_regs->common_int_sta1); + + /* I_STRM__CLK detect : DE_CTL : Auto detect */ + reg &= ~DET_CTRL; + writel(reg, &dp_regs->sys_ctl1); + + return 0; +} + +void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info) +{ + unsigned int reg; + + /* Video Slave mode setting */ + reg = readl(&dp_regs->func_en1); + reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N); + reg |= MASTER_VID_FUNC_EN_N; + writel(reg, &dp_regs->func_en1); + + /* Configure Interlaced for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~INTERACE_SCAN_CFG; + reg |= (video_info->interlaced << INTERACE_SCAN_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /* Configure V sync polarity for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~VSYNC_POLARITY_CFG; + reg |= (video_info->v_sync_polarity << V_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /* Configure H sync polarity for slave mode video */ + reg = readl(&dp_regs->video_ctl10); + reg &= ~HSYNC_POLARITY_CFG; + reg |= (video_info->h_sync_polarity << H_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + + /* Set video mode to slave mode */ + reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; + writel(reg, &dp_regs->soc_general_ctl); +} + +void exynos_dp_set_video_color_format(struct edp_video_info *video_info) +{ + unsigned int reg; + + /* Configure the input color depth, color space, dynamic range */ + reg = (video_info->dynamic_range << IN_D_RANGE_SHIFT) | + (video_info->color_depth << IN_BPC_SHIFT) | + (video_info->color_space << IN_COLOR_F_SHIFT); + writel(reg, &dp_regs->video_ctl2); + + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ + reg = readl(&dp_regs->video_ctl3); + reg &= ~IN_YC_COEFFI_MASK; + if (video_info->ycbcr_coeff) + reg |= IN_YC_COEFFI_ITU709; + else + reg |= IN_YC_COEFFI_ITU601; + writel(reg, &dp_regs->video_ctl3); +} + +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; + + /* For master mode, you don't need to set the video format */ + if (video_info.master_mode == 0) { + writel(TOTAL_LINE_CFG_L(edp_info->disp_info.v_total), + &dp_regs->total_ln_cfg_l); + writel(TOTAL_LINE_CFG_H(edp_info->disp_info.v_total), + &dp_regs->total_ln_cfg_h); + writel(ACTIVE_LINE_CFG_L(edp_info->disp_info.v_res), + &dp_regs->active_ln_cfg_l); + writel(ACTIVE_LINE_CFG_H(edp_info->disp_info.v_res), + &dp_regs->active_ln_cfg_h); + writel(edp_info->disp_info.v_sync_width, + &dp_regs->vsw_cfg); + writel(edp_info->disp_info.v_back_porch, + &dp_regs->vbp_cfg); + writel(edp_info->disp_info.v_front_porch, + &dp_regs->vfp_cfg); + + writel(TOTAL_PIXEL_CFG_L(edp_info->disp_info.h_total), + &dp_regs->total_pix_cfg_l); + writel(TOTAL_PIXEL_CFG_H(edp_info->disp_info.h_total), + &dp_regs->total_pix_cfg_h); + writel(ACTIVE_PIXEL_CFG_L(edp_info->disp_info.h_res), + &dp_regs->active_pix_cfg_l); + writel(ACTIVE_PIXEL_CFG_H(edp_info->disp_info.h_res), + &dp_regs->active_pix_cfg_h); + writel(H_F_PORCH_CFG_L(edp_info->disp_info.h_front_porch), + &dp_regs->hfp_cfg_l); + writel(H_F_PORCH_CFG_H(edp_info->disp_info.h_front_porch), + &dp_regs->hfp_cfg_h); + writel(H_SYNC_PORCH_CFG_L(edp_info->disp_info.h_sync_width), + &dp_regs->hsw_cfg_l); + writel(H_SYNC_PORCH_CFG_H(edp_info->disp_info.h_sync_width), + &dp_regs->hsw_cfg_h); + writel(H_B_PORCH_CFG_L(edp_info->disp_info.h_back_porch), + &dp_regs->hbp_cfg_l); + writel(H_B_PORCH_CFG_H(edp_info->disp_info.h_back_porch), + &dp_regs->hbp_cfg_h); + + /* + * Set SLAVE_I_SCAN_CFG[2], VSYNC_P_CFG[1], + * HSYNC_P_CFG[0] properly + */ + reg = (video_info.interlaced << INTERACE_SCAN_CFG_SHIFT | + video_info.v_sync_polarity << V_S_POLARITY_CFG_SHIFT | + video_info.h_sync_polarity << H_S_POLARITY_CFG_SHIFT); + writel(reg, &dp_regs->video_ctl10); + } + + /* BIST color bar width set--set to each bar is 32 pixel width */ + switch (video_info.bist_pattern) { + case COLORBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_COLOR_BAR; + break; + case COLORBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_COLOR_BAR; + break; + case WHITE_GRAY_BALCKBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_WHITE_GRAY_BLACK_BAR; + break; + case WHITE_GRAY_BALCKBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_WHITE_GRAY_BLACK_BAR; + break; + case MOBILE_WHITEBAR_32: + bist_type = BIST_WIDTH_BAR_32_PIXEL | + BIST_TYPE_MOBILE_WHITE_BAR; + break; + case MOBILE_WHITEBAR_64: + bist_type = BIST_WIDTH_BAR_64_PIXEL | + BIST_TYPE_MOBILE_WHITE_BAR; + break; + default: + return -1; + } + + reg = bist_type; + writel(reg, &dp_regs->video_ctl4); + + return 0; +} + +unsigned int exynos_dp_is_slave_video_stream_clock_on(void) +{ + unsigned int reg; + + /* Update Video stream clk detect status */ + reg = readl(&dp_regs->sys_ctl1); + writel(reg, &dp_regs->sys_ctl1); + + reg = readl(&dp_regs->sys_ctl1); + + if (!(reg & DET_STA)) { + debug("DP Input stream clock not detected.\n"); + return -EIO; + } + + return EXYNOS_DP_SUCCESS; +} + +void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value, + unsigned int n_value) +{ + unsigned int reg; + + if (type == REGISTER_M) { + reg = readl(&dp_regs->sys_ctl4); + reg |= FIX_M_VID; + writel(reg, &dp_regs->sys_ctl4); + reg = M_VID0_CFG(m_value); + writel(reg, &dp_regs->m_vid0); + reg = M_VID1_CFG(m_value); + writel(reg, &dp_regs->m_vid1); + reg = M_VID2_CFG(m_value); + writel(reg, &dp_regs->m_vid2); + + reg = N_VID0_CFG(n_value); + writel(reg, &dp_regs->n_vid0); + reg = N_VID1_CFG(n_value); + writel(reg, &dp_regs->n_vid1); + reg = N_VID2_CFG(n_value); + writel(reg, &dp_regs->n_vid2); + } else { + reg = readl(&dp_regs->sys_ctl4); + reg &= ~FIX_M_VID; + writel(reg, &dp_regs->sys_ctl4); + } +} + +void exynos_dp_set_video_timing_mode(unsigned int type) +{ + unsigned int reg; + + reg = readl(&dp_regs->video_ctl10); + reg &= ~FORMAT_SEL; + + if (type != VIDEO_TIMING_FROM_CAPTURE) + reg |= FORMAT_SEL; + + writel(reg, &dp_regs->video_ctl10); +} + +void exynos_dp_enable_video_master(unsigned int enable) +{ + unsigned int reg; + + reg = readl(&dp_regs->soc_general_ctl); + if (enable) { + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE; + } else { + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MODE_SLAVE_MODE; + } + + writel(reg, &dp_regs->soc_general_ctl); +} + +void exynos_dp_start_video(void) +{ + unsigned int reg; + + /* Enable Video input and disable Mute */ + reg = readl(&dp_regs->video_ctl1); + reg |= VIDEO_EN; + writel(reg, &dp_regs->video_ctl1); +} + +unsigned int exynos_dp_is_video_stream_on(void) +{ + unsigned int reg; + + /* Update STRM_VALID */ + reg = readl(&dp_regs->sys_ctl3); + writel(reg, &dp_regs->sys_ctl3); + + reg = readl(&dp_regs->sys_ctl3); + if (!(reg & STRM_VALID)) + return -EIO; + + return EXYNOS_DP_SUCCESS; +} -- cgit v1.2.1 From b6feb2675b75c687b9ddb9e5a493cfe4035e387d Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 21 Feb 2016 21:08:39 -0700 Subject: exynos: video: Drop dead code We always use device tree with video, so can drop these #ifdefs. Some of the hardware addresses are not needed either. Signed-off-by: Simon Glass Acked-by: Anatolij Gustschin Acked-by: Anatolij Gustschin Signed-off-by: Minkyu Kang --- drivers/video/exynos/exynos_dp_lowlevel.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/video/exynos/exynos_dp_lowlevel.c') diff --git a/drivers/video/exynos/exynos_dp_lowlevel.c b/drivers/video/exynos/exynos_dp_lowlevel.c index acb5bc8eb7..e417cf86c6 100644 --- a/drivers/video/exynos/exynos_dp_lowlevel.c +++ b/drivers/video/exynos/exynos_dp_lowlevel.c @@ -22,7 +22,6 @@ struct exynos_dp *dp_regs; void exynos_dp_set_base_addr(void) { -#if CONFIG_IS_ENABLED(OF_CONTROL) unsigned int node = fdtdec_next_compatible(gd->fdt_blob, 0, COMPAT_SAMSUNG_EXYNOS5_DP); if (node <= 0) @@ -32,9 +31,6 @@ void exynos_dp_set_base_addr(void) 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) -- cgit v1.2.1 From 8c9b8dc05aec6be390dae8a85da7cb56ed8b4ed9 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 21 Feb 2016 21:08:44 -0700 Subject: exynos: video: Drop static variables in exynos_dp_lowlevel.c Drop these and use parameters instead. Signed-off-by: Simon Glass Acked-by: Anatolij Gustschin Signed-off-by: Minkyu Kang --- drivers/video/exynos/exynos_dp_lowlevel.c | 195 ++++++++++++++++-------------- 1 file changed, 101 insertions(+), 94 deletions(-) (limited to 'drivers/video/exynos/exynos_dp_lowlevel.c') diff --git a/drivers/video/exynos/exynos_dp_lowlevel.c b/drivers/video/exynos/exynos_dp_lowlevel.c index e417cf86c6..153c1c6d42 100644 --- a/drivers/video/exynos/exynos_dp_lowlevel.c +++ b/drivers/video/exynos/exynos_dp_lowlevel.c @@ -14,26 +14,13 @@ #include #include #include +#include "exynos_dp_lowlevel.h" /* Declare global data pointer */ DECLARE_GLOBAL_DATA_PTR; -struct exynos_dp *dp_regs; - -void exynos_dp_set_base_addr(void) -{ - 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"); -} - -static void exynos_dp_enable_video_input(unsigned int enable) +static void exynos_dp_enable_video_input(struct exynos_dp *dp_regs, + unsigned int enable) { unsigned int reg; @@ -49,7 +36,7 @@ static void exynos_dp_enable_video_input(unsigned int enable) return; } -void exynos_dp_enable_video_bist(unsigned int enable) +void exynos_dp_enable_video_bist(struct exynos_dp *dp_regs, unsigned int enable) { /* enable video bist */ unsigned int reg; @@ -66,7 +53,7 @@ void exynos_dp_enable_video_bist(unsigned int enable) return; } -void exynos_dp_enable_video_mute(unsigned int enable) +void exynos_dp_enable_video_mute(struct exynos_dp *dp_regs, unsigned int enable) { unsigned int reg; @@ -81,7 +68,7 @@ void exynos_dp_enable_video_mute(unsigned int enable) } -static void exynos_dp_init_analog_param(void) +static void exynos_dp_init_analog_param(struct exynos_dp *dp_regs) { unsigned int reg; @@ -130,7 +117,7 @@ static void exynos_dp_init_analog_param(void) writel(reg, &dp_regs->pll_ctl); } -static void exynos_dp_init_interrupt(void) +static void exynos_dp_init_interrupt(struct exynos_dp *dp_regs) { /* Set interrupt registers to initial states */ @@ -157,16 +144,16 @@ static void exynos_dp_init_interrupt(void) writel(0x00, &dp_regs->int_sta_mask); } -void exynos_dp_reset(void) +void exynos_dp_reset(struct exynos_dp *dp_regs) { unsigned int reg_func_1; /* dp tx sw reset */ writel(RESET_DP_TX, &dp_regs->tx_sw_reset); - exynos_dp_enable_video_input(DP_DISABLE); - exynos_dp_enable_video_bist(DP_DISABLE); - exynos_dp_enable_video_mute(DP_DISABLE); + exynos_dp_enable_video_input(dp_regs, DP_DISABLE); + exynos_dp_enable_video_bist(dp_regs, DP_DISABLE); + exynos_dp_enable_video_mute(dp_regs, DP_DISABLE); /* software reset */ reg_func_1 = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | @@ -178,13 +165,13 @@ void exynos_dp_reset(void) mdelay(1); - exynos_dp_init_analog_param(); - exynos_dp_init_interrupt(); + exynos_dp_init_analog_param(dp_regs); + exynos_dp_init_interrupt(dp_regs); return; } -void exynos_dp_enable_sw_func(unsigned int enable) +void exynos_dp_enable_sw_func(struct exynos_dp *dp_regs, unsigned int enable) { unsigned int reg; @@ -199,7 +186,8 @@ void exynos_dp_enable_sw_func(unsigned int enable) return; } -unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable) +unsigned int exynos_dp_set_analog_power_down(struct exynos_dp *dp_regs, + unsigned int block, u32 enable) { unsigned int reg; @@ -252,7 +240,7 @@ unsigned int exynos_dp_set_analog_power_down(unsigned int block, u32 enable) return 0; } -unsigned int exynos_dp_get_pll_lock_status(void) +unsigned int exynos_dp_get_pll_lock_status(struct exynos_dp *dp_regs) { unsigned int reg; @@ -264,7 +252,8 @@ unsigned int exynos_dp_get_pll_lock_status(void) return PLL_UNLOCKED; } -static void exynos_dp_set_pll_power(unsigned int enable) +static void exynos_dp_set_pll_power(struct exynos_dp *dp_regs, + unsigned int enable) { unsigned int reg; @@ -277,14 +266,14 @@ static void exynos_dp_set_pll_power(unsigned int enable) writel(reg, &dp_regs->pll_ctl); } -int exynos_dp_init_analog_func(void) +int exynos_dp_init_analog_func(struct exynos_dp *dp_regs) { int ret = EXYNOS_DP_SUCCESS; unsigned int retry_cnt = 10; unsigned int reg; /* Power On All Analog block */ - exynos_dp_set_analog_power_down(POWER_ALL, DP_DISABLE); + exynos_dp_set_analog_power_down(dp_regs, POWER_ALL, DP_DISABLE); reg = PLL_LOCK_CHG; writel(reg, &dp_regs->common_int_sta1); @@ -305,9 +294,9 @@ int exynos_dp_init_analog_func(void) reg &= ~(DP_PLL_RESET); writel(reg, &dp_regs->pll_ctl); - exynos_dp_set_pll_power(DP_ENABLE); + exynos_dp_set_pll_power(dp_regs, DP_ENABLE); - while (exynos_dp_get_pll_lock_status() == PLL_UNLOCKED) { + while (exynos_dp_get_pll_lock_status(dp_regs) == PLL_UNLOCKED) { mdelay(1); retry_cnt--; if (retry_cnt == 0) { @@ -328,7 +317,7 @@ int exynos_dp_init_analog_func(void) return ret; } -void exynos_dp_init_hpd(void) +void exynos_dp_init_hpd(struct exynos_dp *dp_regs) { unsigned int reg; @@ -346,7 +335,7 @@ void exynos_dp_init_hpd(void) return; } -static inline void exynos_dp_reset_aux(void) +static inline void exynos_dp_reset_aux(struct exynos_dp *dp_regs) { unsigned int reg; @@ -358,7 +347,7 @@ static inline void exynos_dp_reset_aux(void) return; } -void exynos_dp_init_aux(void) +void exynos_dp_init_aux(struct exynos_dp *dp_regs) { unsigned int reg; @@ -366,7 +355,7 @@ void exynos_dp_init_aux(void) reg = RPLY_RECEIV | AUX_ERR; writel(reg, &dp_regs->int_sta); - exynos_dp_reset_aux(); + exynos_dp_reset_aux(dp_regs); /* Disable AUX transaction H/W retry */ reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(3)| @@ -385,7 +374,7 @@ void exynos_dp_init_aux(void) return; } -void exynos_dp_config_interrupt(void) +void exynos_dp_config_interrupt(struct exynos_dp *dp_regs) { unsigned int reg; @@ -408,7 +397,7 @@ void exynos_dp_config_interrupt(void) return; } -unsigned int exynos_dp_get_plug_in_status(void) +unsigned int exynos_dp_get_plug_in_status(struct exynos_dp *dp_regs) { unsigned int reg; @@ -419,13 +408,13 @@ unsigned int exynos_dp_get_plug_in_status(void) return -1; } -unsigned int exynos_dp_detect_hpd(void) +unsigned int exynos_dp_detect_hpd(struct exynos_dp *dp_regs) { int timeout_loop = DP_TIMEOUT_LOOP_COUNT; mdelay(2); - while (exynos_dp_get_plug_in_status() != 0) { + while (exynos_dp_get_plug_in_status(dp_regs) != 0) { if (timeout_loop == 0) return -EINVAL; mdelay(10); @@ -435,7 +424,7 @@ unsigned int exynos_dp_detect_hpd(void) return EXYNOS_DP_SUCCESS; } -unsigned int exynos_dp_start_aux_transaction(void) +unsigned int exynos_dp_start_aux_transaction(struct exynos_dp *dp_regs) { unsigned int reg; unsigned int ret = 0; @@ -484,8 +473,9 @@ unsigned int exynos_dp_start_aux_transaction(void) return EXYNOS_DP_SUCCESS; } -unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, - unsigned char data) +unsigned int exynos_dp_write_byte_to_dpcd(struct exynos_dp *dp_regs, + unsigned int reg_addr, + unsigned char data) { unsigned int reg, ret; @@ -514,7 +504,7 @@ unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - ret = exynos_dp_start_aux_transaction(); + ret = exynos_dp_start_aux_transaction(dp_regs); if (ret != EXYNOS_DP_SUCCESS) { printf("DP Aux transaction failed\n"); return ret; @@ -523,8 +513,9 @@ unsigned int exynos_dp_write_byte_to_dpcd(unsigned int reg_addr, return ret; } -unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, - unsigned char *data) +unsigned int exynos_dp_read_byte_from_dpcd(struct exynos_dp *dp_regs, + unsigned int reg_addr, + unsigned char *data) { unsigned int reg; int retval; @@ -550,7 +541,7 @@ unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(); + retval = exynos_dp_start_aux_transaction(dp_regs); if (!retval) debug("DP Aux Transaction fail!\n"); @@ -561,9 +552,10 @@ unsigned int exynos_dp_read_byte_from_dpcd(unsigned int reg_addr, return retval; } -unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, - unsigned int count, - unsigned char data[]) +unsigned int exynos_dp_write_bytes_to_dpcd(struct exynos_dp *dp_regs, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]) { unsigned int reg; unsigned int start_offset; @@ -610,7 +602,7 @@ unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - ret = exynos_dp_start_aux_transaction(); + ret = exynos_dp_start_aux_transaction(dp_regs); if (ret != EXYNOS_DP_SUCCESS) { if (retry_cnt == 0) { printf("DP Aux Transaction failed\n"); @@ -626,9 +618,10 @@ unsigned int exynos_dp_write_bytes_to_dpcd(unsigned int reg_addr, return ret; } -unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr, - unsigned int count, - unsigned char data[]) +unsigned int exynos_dp_read_bytes_from_dpcd(struct exynos_dp *dp_regs, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]) { unsigned int reg; unsigned int start_offset; @@ -668,7 +661,7 @@ unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - ret = exynos_dp_start_aux_transaction(); + ret = exynos_dp_start_aux_transaction(dp_regs); if (ret != EXYNOS_DP_SUCCESS) { if (retry_cnt == 0) { printf("DP Aux Transaction failed\n"); @@ -692,8 +685,8 @@ unsigned int exynos_dp_read_bytes_from_dpcd(unsigned int reg_addr, return ret; } -int exynos_dp_select_i2c_device(unsigned int device_addr, - unsigned int reg_addr) +int exynos_dp_select_i2c_device(struct exynos_dp *dp_regs, + unsigned int device_addr, unsigned int reg_addr) { unsigned int reg; int retval; @@ -717,16 +710,16 @@ int exynos_dp_select_i2c_device(unsigned int device_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(); + retval = exynos_dp_start_aux_transaction(dp_regs); if (retval != 0) printf("%s: DP Aux Transaction fail!\n", __func__); return retval; } -int exynos_dp_read_byte_from_i2c(unsigned int device_addr, - unsigned int reg_addr, - unsigned int *data) +int exynos_dp_read_byte_from_i2c(struct exynos_dp *dp_regs, + unsigned int device_addr, + unsigned int reg_addr, unsigned int *data) { unsigned int reg; int i; @@ -738,7 +731,8 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr, writel(reg, &dp_regs->buffer_data_ctl); /* Select EDID device */ - retval = exynos_dp_select_i2c_device(device_addr, reg_addr); + retval = exynos_dp_select_i2c_device(dp_regs, device_addr, + reg_addr); if (retval != 0) { printf("DP Select EDID device fail. retry !\n"); continue; @@ -754,7 +748,7 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(); + retval = exynos_dp_start_aux_transaction(dp_regs); if (retval != EXYNOS_DP_SUCCESS) printf("%s: DP Aux Transaction fail!\n", __func__); } @@ -766,8 +760,10 @@ int exynos_dp_read_byte_from_i2c(unsigned int device_addr, return retval; } -int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, - unsigned int reg_addr, unsigned int count, unsigned char edid[]) +int exynos_dp_read_bytes_from_i2c(struct exynos_dp *dp_regs, + unsigned int device_addr, + unsigned int reg_addr, unsigned int count, + unsigned char edid[]) { unsigned int reg; unsigned int i, j; @@ -791,9 +787,8 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, * request without sending addres */ if (!defer) - retval = - exynos_dp_select_i2c_device(device_addr, - reg_addr + i); + retval = exynos_dp_select_i2c_device( + dp_regs, device_addr, reg_addr + i); else defer = 0; @@ -809,7 +804,8 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, writel(reg, &dp_regs->aux_ch_ctl1); /* Start AUX transaction */ - retval = exynos_dp_start_aux_transaction(); + retval = exynos_dp_start_aux_transaction( + dp_regs); if (retval == 0) break; else @@ -834,7 +830,7 @@ int exynos_dp_read_bytes_from_i2c(unsigned int device_addr, return retval; } -void exynos_dp_reset_macro(void) +void exynos_dp_reset_macro(struct exynos_dp *dp_regs) { unsigned int reg; @@ -849,7 +845,8 @@ void exynos_dp_reset_macro(void) writel(reg, &dp_regs->phy_test); } -void exynos_dp_set_link_bandwidth(unsigned char bwtype) +void exynos_dp_set_link_bandwidth(struct exynos_dp *dp_regs, + unsigned char bwtype) { unsigned int reg; @@ -860,7 +857,7 @@ void exynos_dp_set_link_bandwidth(unsigned char bwtype) writel(reg, &dp_regs->link_bw_set); } -unsigned char exynos_dp_get_link_bandwidth(void) +unsigned char exynos_dp_get_link_bandwidth(struct exynos_dp *dp_regs) { unsigned char ret; unsigned int reg; @@ -871,7 +868,7 @@ unsigned char exynos_dp_get_link_bandwidth(void) return ret; } -void exynos_dp_set_lane_count(unsigned char count) +void exynos_dp_set_lane_count(struct exynos_dp *dp_regs, unsigned char count) { unsigned int reg; @@ -882,7 +879,7 @@ void exynos_dp_set_lane_count(unsigned char count) writel(reg, &dp_regs->lane_count_set); } -unsigned int exynos_dp_get_lane_count(void) +unsigned int exynos_dp_get_lane_count(struct exynos_dp *dp_regs) { unsigned int reg; @@ -891,7 +888,8 @@ unsigned int exynos_dp_get_lane_count(void) return reg; } -unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt) +unsigned char exynos_dp_get_lanex_pre_emphasis(struct exynos_dp *dp_regs, + unsigned char lanecnt) { unsigned int reg_list[DP_LANE_CNT_4] = { (unsigned int)&dp_regs->ln0_link_training_ctl, @@ -903,8 +901,9 @@ unsigned char exynos_dp_get_lanex_pre_emphasis(unsigned char lanecnt) return readl(reg_list[lanecnt]); } -void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val, - unsigned char lanecnt) +void exynos_dp_set_lanex_pre_emphasis(struct exynos_dp *dp_regs, + unsigned char request_val, + unsigned char lanecnt) { unsigned int reg_list[DP_LANE_CNT_4] = { (unsigned int)&dp_regs->ln0_link_training_ctl, @@ -916,7 +915,8 @@ void exynos_dp_set_lanex_pre_emphasis(unsigned char request_val, writel(request_val, reg_list[lanecnt]); } -void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt) +void exynos_dp_set_lane_pre_emphasis(struct exynos_dp *dp_regs, + unsigned int level, unsigned char lanecnt) { unsigned char i; unsigned int reg; @@ -939,7 +939,8 @@ void exynos_dp_set_lane_pre_emphasis(unsigned int level, unsigned char lanecnt) } } -void exynos_dp_set_training_pattern(unsigned int pattern) +void exynos_dp_set_training_pattern(struct exynos_dp *dp_regs, + unsigned int pattern) { unsigned int reg = 0; @@ -967,7 +968,8 @@ void exynos_dp_set_training_pattern(unsigned int pattern) writel(reg, &dp_regs->training_ptn_set); } -void exynos_dp_enable_enhanced_mode(unsigned char enable) +void exynos_dp_enable_enhanced_mode(struct exynos_dp *dp_regs, + unsigned char enable) { unsigned int reg; @@ -980,7 +982,7 @@ void exynos_dp_enable_enhanced_mode(unsigned char enable) writel(reg, &dp_regs->sys_ctl4); } -void exynos_dp_enable_scrambling(unsigned int enable) +void exynos_dp_enable_scrambling(struct exynos_dp *dp_regs, unsigned int enable) { unsigned int reg; @@ -993,7 +995,7 @@ void exynos_dp_enable_scrambling(unsigned int enable) writel(reg, &dp_regs->training_ptn_set); } -int exynos_dp_init_video(void) +int exynos_dp_init_video(struct exynos_dp *dp_regs) { unsigned int reg; @@ -1008,7 +1010,8 @@ int exynos_dp_init_video(void) return 0; } -void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info) +void exynos_dp_config_video_slave_mode(struct exynos_dp *dp_regs, + struct edp_video_info *video_info) { unsigned int reg; @@ -1041,7 +1044,8 @@ void exynos_dp_config_video_slave_mode(struct edp_video_info *video_info) writel(reg, &dp_regs->soc_general_ctl); } -void exynos_dp_set_video_color_format(struct edp_video_info *video_info) +void exynos_dp_set_video_color_format(struct exynos_dp *dp_regs, + struct edp_video_info *video_info) { unsigned int reg; @@ -1061,7 +1065,8 @@ void exynos_dp_set_video_color_format(struct edp_video_info *video_info) writel(reg, &dp_regs->video_ctl3); } -int exynos_dp_config_video_bist(struct edp_device_info *edp_info) +int exynos_dp_config_video_bist(struct exynos_dp *dp_regs, + struct edp_device_info *edp_info) { unsigned int reg; unsigned int bist_type = 0; @@ -1151,7 +1156,7 @@ int exynos_dp_config_video_bist(struct edp_device_info *edp_info) return 0; } -unsigned int exynos_dp_is_slave_video_stream_clock_on(void) +unsigned int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp *dp_regs) { unsigned int reg; @@ -1169,8 +1174,8 @@ unsigned int exynos_dp_is_slave_video_stream_clock_on(void) return EXYNOS_DP_SUCCESS; } -void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value, - unsigned int n_value) +void exynos_dp_set_video_cr_mn(struct exynos_dp *dp_regs, unsigned int type, + unsigned int m_value, unsigned int n_value) { unsigned int reg; @@ -1198,7 +1203,8 @@ void exynos_dp_set_video_cr_mn(unsigned int type, unsigned int m_value, } } -void exynos_dp_set_video_timing_mode(unsigned int type) +void exynos_dp_set_video_timing_mode(struct exynos_dp *dp_regs, + unsigned int type) { unsigned int reg; @@ -1211,7 +1217,8 @@ void exynos_dp_set_video_timing_mode(unsigned int type) writel(reg, &dp_regs->video_ctl10); } -void exynos_dp_enable_video_master(unsigned int enable) +void exynos_dp_enable_video_master(struct exynos_dp *dp_regs, + unsigned int enable) { unsigned int reg; @@ -1227,7 +1234,7 @@ void exynos_dp_enable_video_master(unsigned int enable) writel(reg, &dp_regs->soc_general_ctl); } -void exynos_dp_start_video(void) +void exynos_dp_start_video(struct exynos_dp *dp_regs) { unsigned int reg; @@ -1237,7 +1244,7 @@ void exynos_dp_start_video(void) writel(reg, &dp_regs->video_ctl1); } -unsigned int exynos_dp_is_video_stream_on(void) +unsigned int exynos_dp_is_video_stream_on(struct exynos_dp *dp_regs) { unsigned int reg; -- cgit v1.2.1 From 21f8f9bb084e276c490454c401fc23dc42c536bc Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 21 Feb 2016 21:08:59 -0700 Subject: exynos: video: Rename edp_device_info to exynos_dp_priv Rename this function to better fit with driver model. It is the private data for the exynos EDP driver. Signed-off-by: Simon Glass Acked-by: Anatolij Gustschin Signed-off-by: Minkyu Kang --- drivers/video/exynos/exynos_dp_lowlevel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/video/exynos/exynos_dp_lowlevel.c') diff --git a/drivers/video/exynos/exynos_dp_lowlevel.c b/drivers/video/exynos/exynos_dp_lowlevel.c index 153c1c6d42..00a79ea713 100644 --- a/drivers/video/exynos/exynos_dp_lowlevel.c +++ b/drivers/video/exynos/exynos_dp_lowlevel.c @@ -1066,7 +1066,7 @@ void exynos_dp_set_video_color_format(struct exynos_dp *dp_regs, } int exynos_dp_config_video_bist(struct exynos_dp *dp_regs, - struct edp_device_info *edp_info) + struct exynos_dp_priv *edp_info) { unsigned int reg; unsigned int bist_type = 0; -- cgit v1.2.1 From 8b449a6639c6bee1a97c0eba2ab142a7c471d9b1 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 21 Feb 2016 21:09:00 -0700 Subject: exynos: video: Rename variables for driver model Use 'priv' for a private pointer and 'regs' for a register pointer. Signed-off-by: Simon Glass Acked-by: Anatolij Gustschin Signed-off-by: Minkyu Kang --- drivers/video/exynos/exynos_dp_lowlevel.c | 71 +++++++++++++++---------------- 1 file changed, 34 insertions(+), 37 deletions(-) (limited to 'drivers/video/exynos/exynos_dp_lowlevel.c') diff --git a/drivers/video/exynos/exynos_dp_lowlevel.c b/drivers/video/exynos/exynos_dp_lowlevel.c index 00a79ea713..f9784738bb 100644 --- a/drivers/video/exynos/exynos_dp_lowlevel.c +++ b/drivers/video/exynos/exynos_dp_lowlevel.c @@ -1066,49 +1066,46 @@ void exynos_dp_set_video_color_format(struct exynos_dp *dp_regs, } int exynos_dp_config_video_bist(struct exynos_dp *dp_regs, - struct exynos_dp_priv *edp_info) + struct exynos_dp_priv *priv) { unsigned int reg; unsigned int bist_type = 0; - struct edp_video_info video_info = edp_info->video_info; + struct edp_video_info video_info = priv->video_info; /* For master mode, you don't need to set the video format */ if (video_info.master_mode == 0) { - writel(TOTAL_LINE_CFG_L(edp_info->disp_info.v_total), - &dp_regs->total_ln_cfg_l); - writel(TOTAL_LINE_CFG_H(edp_info->disp_info.v_total), - &dp_regs->total_ln_cfg_h); - writel(ACTIVE_LINE_CFG_L(edp_info->disp_info.v_res), - &dp_regs->active_ln_cfg_l); - writel(ACTIVE_LINE_CFG_H(edp_info->disp_info.v_res), - &dp_regs->active_ln_cfg_h); - writel(edp_info->disp_info.v_sync_width, - &dp_regs->vsw_cfg); - writel(edp_info->disp_info.v_back_porch, - &dp_regs->vbp_cfg); - writel(edp_info->disp_info.v_front_porch, - &dp_regs->vfp_cfg); - - writel(TOTAL_PIXEL_CFG_L(edp_info->disp_info.h_total), - &dp_regs->total_pix_cfg_l); - writel(TOTAL_PIXEL_CFG_H(edp_info->disp_info.h_total), - &dp_regs->total_pix_cfg_h); - writel(ACTIVE_PIXEL_CFG_L(edp_info->disp_info.h_res), - &dp_regs->active_pix_cfg_l); - writel(ACTIVE_PIXEL_CFG_H(edp_info->disp_info.h_res), - &dp_regs->active_pix_cfg_h); - writel(H_F_PORCH_CFG_L(edp_info->disp_info.h_front_porch), - &dp_regs->hfp_cfg_l); - writel(H_F_PORCH_CFG_H(edp_info->disp_info.h_front_porch), - &dp_regs->hfp_cfg_h); - writel(H_SYNC_PORCH_CFG_L(edp_info->disp_info.h_sync_width), - &dp_regs->hsw_cfg_l); - writel(H_SYNC_PORCH_CFG_H(edp_info->disp_info.h_sync_width), - &dp_regs->hsw_cfg_h); - writel(H_B_PORCH_CFG_L(edp_info->disp_info.h_back_porch), - &dp_regs->hbp_cfg_l); - writel(H_B_PORCH_CFG_H(edp_info->disp_info.h_back_porch), - &dp_regs->hbp_cfg_h); + writel(TOTAL_LINE_CFG_L(priv->disp_info.v_total), + &dp_regs->total_ln_cfg_l); + writel(TOTAL_LINE_CFG_H(priv->disp_info.v_total), + &dp_regs->total_ln_cfg_h); + writel(ACTIVE_LINE_CFG_L(priv->disp_info.v_res), + &dp_regs->active_ln_cfg_l); + writel(ACTIVE_LINE_CFG_H(priv->disp_info.v_res), + &dp_regs->active_ln_cfg_h); + writel(priv->disp_info.v_sync_width, &dp_regs->vsw_cfg); + writel(priv->disp_info.v_back_porch, &dp_regs->vbp_cfg); + writel(priv->disp_info.v_front_porch, &dp_regs->vfp_cfg); + + writel(TOTAL_PIXEL_CFG_L(priv->disp_info.h_total), + &dp_regs->total_pix_cfg_l); + writel(TOTAL_PIXEL_CFG_H(priv->disp_info.h_total), + &dp_regs->total_pix_cfg_h); + writel(ACTIVE_PIXEL_CFG_L(priv->disp_info.h_res), + &dp_regs->active_pix_cfg_l); + writel(ACTIVE_PIXEL_CFG_H(priv->disp_info.h_res), + &dp_regs->active_pix_cfg_h); + writel(H_F_PORCH_CFG_L(priv->disp_info.h_front_porch), + &dp_regs->hfp_cfg_l); + writel(H_F_PORCH_CFG_H(priv->disp_info.h_front_porch), + &dp_regs->hfp_cfg_h); + writel(H_SYNC_PORCH_CFG_L(priv->disp_info.h_sync_width), + &dp_regs->hsw_cfg_l); + writel(H_SYNC_PORCH_CFG_H(priv->disp_info.h_sync_width), + &dp_regs->hsw_cfg_h); + writel(H_B_PORCH_CFG_L(priv->disp_info.h_back_porch), + &dp_regs->hbp_cfg_l); + writel(H_B_PORCH_CFG_H(priv->disp_info.h_back_porch), + &dp_regs->hbp_cfg_h); /* * Set SLAVE_I_SCAN_CFG[2], VSYNC_P_CFG[1], -- cgit v1.2.1