| /* |
| * drivers/video/tegra/dc/sor.c |
| * |
| * Copyright (c) 2011-2015, NVIDIA Corporation. |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <console/console.h> |
| #include <arch/io.h> |
| #include <stdint.h> |
| #include <lib.h> |
| #include <stdlib.h> |
| #include <delay.h> |
| #include <soc/addressmap.h> |
| #include <device/device.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <cpu/cpu.h> |
| #include <boot/tables.h> |
| #include <cbmem.h> |
| #include <soc/nvidia/tegra/dc.h> |
| #include <soc/nvidia/tegra/types.h> |
| #include <soc/sor.h> |
| #include <soc/nvidia/tegra/displayport.h> |
| #include <soc/clk_rst.h> |
| #include <soc/clock.h> |
| #include "chip.h" |
| #include <soc/display.h> |
| |
| #define DEBUG_SOR 0 |
| |
| #define APBDEV_PMC_DPD_SAMPLE (0x20) |
| #define APBDEV_PMC_DPD_SAMPLE_ON_DISABLE (0) |
| #define APBDEV_PMC_DPD_SAMPLE_ON_ENABLE (1) |
| #define APBDEV_PMC_SEL_DPD_TIM (0x1c8) |
| #define APBDEV_PMC_SEL_DPD_TIM_SEL_DPD_TIM_DEFAULT (0x7f) |
| #define APBDEV_PMC_IO_DPD2_REQ (0x1c0) |
| #define APBDEV_PMC_IO_DPD2_REQ_LVDS_SHIFT (25) |
| #define APBDEV_PMC_IO_DPD2_REQ_LVDS_OFF (0 << 25) |
| #define APBDEV_PMC_IO_DPD2_REQ_LVDS_ON (1 << 25) |
| #define APBDEV_PMC_IO_DPD2_REQ_CODE_SHIFT (30) |
| #define APBDEV_PMC_IO_DPD2_REQ_CODE_DEFAULT_MASK (0x3 << 30) |
| #define APBDEV_PMC_IO_DPD2_REQ_CODE_IDLE (0 << 30) |
| #define APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_OFF (1 << 30) |
| #define APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_ON (2 << 30) |
| #define APBDEV_PMC_IO_DPD2_STATUS (0x1c4) |
| #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_SHIFT (25) |
| #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_OFF (0 << 25) |
| #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON (1 << 25) |
| |
| #define DC_N_WINDOWS 5 |
| |
| static inline u32 tegra_sor_readl(struct tegra_dc_sor_data *sor, u32 reg) |
| { |
| void *addr = sor->base + (u32) (reg << 2); |
| u32 reg_val = READL(addr); |
| return reg_val; |
| } |
| |
| static inline void tegra_sor_writel(struct tegra_dc_sor_data *sor, |
| u32 reg, u32 val) |
| { |
| void *addr = sor->base + (u32) (reg << 2); |
| WRITEL(val, addr); |
| } |
| |
| static inline void tegra_sor_write_field(struct tegra_dc_sor_data *sor, |
| u32 reg, u32 mask, u32 val) |
| { |
| u32 reg_val = tegra_sor_readl(sor, reg); |
| reg_val &= ~mask; |
| reg_val |= val; |
| tegra_sor_writel(sor, reg, reg_val); |
| } |
| |
| void tegra_dp_disable_tx_pu(struct tegra_dc_sor_data *sor) |
| { |
| tegra_sor_write_field(sor, |
| NV_SOR_DP_PADCTL(sor->portnum), |
| NV_SOR_DP_PADCTL_TX_PU_MASK, |
| NV_SOR_DP_PADCTL_TX_PU_DISABLE); |
| } |
| |
| void tegra_dp_set_pe_vs_pc(struct tegra_dc_sor_data *sor, u32 mask, |
| u32 pe_reg, u32 vs_reg, u32 pc_reg, u8 pc_supported) |
| { |
| tegra_sor_write_field(sor, NV_SOR_PR(sor->portnum), |
| mask, pe_reg); |
| tegra_sor_write_field(sor, NV_SOR_DC(sor->portnum), |
| mask, vs_reg); |
| if (pc_supported) { |
| tegra_sor_write_field( |
| sor, NV_SOR_POSTCURSOR(sor->portnum), |
| mask, pc_reg); |
| } |
| } |
| |
| static u32 tegra_dc_sor_poll_register(struct tegra_dc_sor_data *sor, |
| u32 reg, u32 mask, u32 exp_val, u32 poll_interval_us, u32 timeout_us) |
| { |
| u32 temp = timeout_us; |
| u32 reg_val = 0; |
| |
| do { |
| udelay(poll_interval_us); |
| reg_val = tegra_sor_readl(sor, reg); |
| if (timeout_us > poll_interval_us) |
| timeout_us -= poll_interval_us; |
| else |
| break; |
| } while ((reg_val & mask) != exp_val); |
| |
| if ((reg_val & mask) == exp_val) |
| return 0; /* success */ |
| printk(BIOS_ERR, |
| "sor_poll_register 0x%x: timeout, " |
| "(reg_val)0x%08x & (mask)0x%08x != (exp_val)0x%08x\n", |
| reg, reg_val, mask, exp_val); |
| |
| return temp; |
| } |
| |
| int tegra_dc_sor_set_power_state(struct tegra_dc_sor_data *sor, int pu_pd) |
| { |
| u32 reg_val; |
| u32 orig_val; |
| |
| orig_val = tegra_sor_readl(sor, NV_SOR_PWR); |
| |
| reg_val = pu_pd ? NV_SOR_PWR_NORMAL_STATE_PU : |
| NV_SOR_PWR_NORMAL_STATE_PD; /* normal state only */ |
| |
| if (reg_val == orig_val) |
| return 0; /* No update needed */ |
| |
| reg_val |= NV_SOR_PWR_SETTING_NEW_TRIGGER; |
| tegra_sor_writel(sor, NV_SOR_PWR, reg_val); |
| |
| /* Poll to confirm it is done */ |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_PWR, |
| NV_SOR_PWR_SETTING_NEW_DEFAULT_MASK, |
| NV_SOR_PWR_SETTING_NEW_DONE, |
| 100, TEGRA_SOR_TIMEOUT_MS * 1000)) { |
| printk(BIOS_ERR, |
| "dc timeout waiting for SOR_PWR = NEW_DONE\n"); |
| return -EFAULT; |
| } |
| return 0; |
| } |
| |
| void tegra_dc_sor_set_dp_linkctl(struct tegra_dc_sor_data *sor, int ena, |
| u8 training_pattern, const struct tegra_dc_dp_link_config *link_cfg) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_LINKCTL(sor->portnum)); |
| |
| if (ena) |
| reg_val |= NV_SOR_DP_LINKCTL_ENABLE_YES; |
| else |
| reg_val &= NV_SOR_DP_LINKCTL_ENABLE_NO; |
| |
| reg_val &= ~NV_SOR_DP_LINKCTL_TUSIZE_MASK; |
| reg_val |= (link_cfg->tu_size << NV_SOR_DP_LINKCTL_TUSIZE_SHIFT); |
| |
| if (link_cfg->enhanced_framing) |
| reg_val |= NV_SOR_DP_LINKCTL_ENHANCEDFRAME_ENABLE; |
| |
| tegra_sor_writel(sor, NV_SOR_DP_LINKCTL(sor->portnum), reg_val); |
| |
| switch (training_pattern) { |
| case training_pattern_1: |
| tegra_sor_writel(sor, NV_SOR_DP_TPG, 0x41414141); |
| break; |
| case training_pattern_2: |
| case training_pattern_3: |
| reg_val = (link_cfg->link_bw == SOR_LINK_SPEED_G5_4) ? |
| 0x43434343 : 0x42424242; |
| tegra_sor_writel(sor, NV_SOR_DP_TPG, reg_val); |
| break; |
| default: |
| tegra_sor_writel(sor, NV_SOR_DP_TPG, 0x50505050); |
| break; |
| } |
| } |
| |
| static int tegra_dc_sor_enable_lane_sequencer(struct tegra_dc_sor_data *sor, |
| int pu, int is_lvds) |
| { |
| u32 reg_val; |
| |
| /* SOR lane sequencer */ |
| if (pu) |
| reg_val = NV_SOR_LANE_SEQ_CTL_SETTING_NEW_TRIGGER | |
| NV_SOR_LANE_SEQ_CTL_SEQUENCE_DOWN | |
| NV_SOR_LANE_SEQ_CTL_NEW_POWER_STATE_PU; |
| else |
| reg_val = NV_SOR_LANE_SEQ_CTL_SETTING_NEW_TRIGGER | |
| NV_SOR_LANE_SEQ_CTL_SEQUENCE_UP | |
| NV_SOR_LANE_SEQ_CTL_NEW_POWER_STATE_PD; |
| |
| if (is_lvds) |
| reg_val |= 15 << NV_SOR_LANE_SEQ_CTL_DELAY_SHIFT; |
| else |
| reg_val |= 1 << NV_SOR_LANE_SEQ_CTL_DELAY_SHIFT; |
| |
| tegra_sor_writel(sor, NV_SOR_LANE_SEQ_CTL, reg_val); |
| |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_LANE_SEQ_CTL, |
| NV_SOR_LANE_SEQ_CTL_SETTING_MASK, |
| NV_SOR_LANE_SEQ_CTL_SETTING_NEW_DONE, |
| 100, TEGRA_SOR_TIMEOUT_MS*1000)) { |
| printk(BIOS_ERR, |
| "dp: timeout while waiting for SOR lane sequencer " |
| "to power down langes\n"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static int tegra_dc_sor_power_dplanes(struct tegra_dc_sor_data *sor, |
| u32 lane_count, int pu) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_PADCTL(sor->portnum)); |
| |
| if (pu) { |
| switch (lane_count) { |
| case 4: |
| reg_val |= (NV_SOR_DP_PADCTL_PD_TXD_3_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_2_NO); |
| /* fall through */ |
| case 2: |
| reg_val |= NV_SOR_DP_PADCTL_PD_TXD_1_NO; |
| case 1: |
| reg_val |= NV_SOR_DP_PADCTL_PD_TXD_0_NO; |
| break; |
| default: |
| printk(BIOS_ERR, |
| "dp: invalid lane number %d\n", lane_count); |
| return -1; |
| } |
| |
| tegra_sor_writel(sor, NV_SOR_DP_PADCTL(sor->portnum), reg_val); |
| tegra_dc_sor_set_lane_count(sor, lane_count); |
| } |
| return tegra_dc_sor_enable_lane_sequencer(sor, pu, 0); |
| } |
| |
| void tegra_dc_sor_set_panel_power(struct tegra_dc_sor_data *sor, |
| int power_up) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_PADCTL(sor->portnum)); |
| |
| if (power_up) |
| reg_val &= ~NV_SOR_DP_PADCTL_PAD_CAL_PD_POWERDOWN; |
| else |
| reg_val |= NV_SOR_DP_PADCTL_PAD_CAL_PD_POWERDOWN; |
| |
| tegra_sor_writel(sor, NV_SOR_DP_PADCTL(sor->portnum), reg_val); |
| } |
| |
| static void tegra_dc_sor_config_pwm(struct tegra_dc_sor_data *sor, u32 pwm_div, |
| u32 pwm_dutycycle) |
| { |
| tegra_sor_writel(sor, NV_SOR_PWM_DIV, pwm_div); |
| tegra_sor_writel(sor, NV_SOR_PWM_CTL, |
| (pwm_dutycycle & NV_SOR_PWM_CTL_DUTY_CYCLE_MASK) | |
| NV_SOR_PWM_CTL_SETTING_NEW_TRIGGER); |
| |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_PWM_CTL, |
| NV_SOR_PWM_CTL_SETTING_NEW_SHIFT, |
| NV_SOR_PWM_CTL_SETTING_NEW_DONE, |
| 100, TEGRA_SOR_TIMEOUT_MS * 1000)) { |
| printk(BIOS_ERR, |
| "dp: timeout while waiting for SOR PWM setting\n"); |
| } |
| } |
| |
| static void tegra_dc_sor_set_dp_mode(struct tegra_dc_sor_data *sor, |
| const struct tegra_dc_dp_link_config *link_cfg) |
| { |
| u32 reg_val; |
| |
| tegra_dc_sor_set_link_bandwidth(sor, link_cfg->link_bw); |
| |
| tegra_dc_sor_set_dp_linkctl(sor, 1, training_pattern_none, link_cfg); |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_CONFIG(sor->portnum)); |
| reg_val &= ~NV_SOR_DP_CONFIG_WATERMARK_MASK; |
| reg_val |= link_cfg->watermark; |
| reg_val &= ~NV_SOR_DP_CONFIG_ACTIVESYM_COUNT_MASK; |
| reg_val |= (link_cfg->active_count << |
| NV_SOR_DP_CONFIG_ACTIVESYM_COUNT_SHIFT); |
| reg_val &= ~NV_SOR_DP_CONFIG_ACTIVESYM_FRAC_MASK; |
| reg_val |= (link_cfg->active_frac << |
| NV_SOR_DP_CONFIG_ACTIVESYM_FRAC_SHIFT); |
| if (link_cfg->activepolarity) |
| reg_val |= NV_SOR_DP_CONFIG_ACTIVESYM_POLARITY_POSITIVE; |
| else |
| reg_val &= ~NV_SOR_DP_CONFIG_ACTIVESYM_POLARITY_POSITIVE; |
| reg_val |= (NV_SOR_DP_CONFIG_ACTIVESYM_CNTL_ENABLE | |
| NV_SOR_DP_CONFIG_RD_RESET_VAL_NEGATIVE); |
| |
| tegra_sor_writel(sor, NV_SOR_DP_CONFIG(sor->portnum), reg_val); |
| |
| /* program h/vblank sym */ |
| tegra_sor_write_field(sor, NV_SOR_DP_AUDIO_HBLANK_SYMBOLS, |
| NV_SOR_DP_AUDIO_HBLANK_SYMBOLS_MASK, link_cfg->hblank_sym); |
| |
| tegra_sor_write_field(sor, NV_SOR_DP_AUDIO_VBLANK_SYMBOLS, |
| NV_SOR_DP_AUDIO_VBLANK_SYMBOLS_MASK, link_cfg->vblank_sym); |
| } |
| |
| static inline void tegra_dc_sor_super_update(struct tegra_dc_sor_data *sor) |
| { |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE0, 0); |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE0, 1); |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE0, 0); |
| } |
| |
| static inline void tegra_dc_sor_update(struct tegra_dc_sor_data *sor) |
| { |
| tegra_sor_writel(sor, NV_SOR_STATE0, 0); |
| tegra_sor_writel(sor, NV_SOR_STATE0, 1); |
| tegra_sor_writel(sor, NV_SOR_STATE0, 0); |
| } |
| |
| static void tegra_dc_sor_io_set_dpd(struct tegra_dc_sor_data *sor, int up) |
| { |
| u32 reg_val; |
| void *pmc_base = sor->pmc_base; |
| |
| if (up) { |
| WRITEL(APBDEV_PMC_DPD_SAMPLE_ON_ENABLE, |
| pmc_base + APBDEV_PMC_DPD_SAMPLE); |
| WRITEL(10, pmc_base + APBDEV_PMC_SEL_DPD_TIM); |
| } |
| |
| reg_val = READL(pmc_base + APBDEV_PMC_IO_DPD2_REQ); |
| reg_val &= ~(APBDEV_PMC_IO_DPD2_REQ_LVDS_ON || |
| APBDEV_PMC_IO_DPD2_REQ_CODE_DEFAULT_MASK); |
| |
| reg_val = up ? APBDEV_PMC_IO_DPD2_REQ_LVDS_ON | |
| APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_OFF : |
| APBDEV_PMC_IO_DPD2_REQ_LVDS_OFF | |
| APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_ON; |
| |
| WRITEL(reg_val, pmc_base + APBDEV_PMC_IO_DPD2_REQ); |
| |
| /* Polling */ |
| u32 temp = 10*1000; |
| do { |
| udelay(20); |
| reg_val = READL(pmc_base + APBDEV_PMC_IO_DPD2_STATUS); |
| if (temp > 20) |
| temp -= 20; |
| else |
| break; |
| } while ((reg_val & APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON) != 0); |
| |
| if ((reg_val & APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON) != 0) |
| printk(BIOS_ERR, |
| "PMC_IO_DPD2 polling failed (0x%x)\n", reg_val); |
| |
| if (up) |
| WRITEL(APBDEV_PMC_DPD_SAMPLE_ON_DISABLE, |
| pmc_base + APBDEV_PMC_DPD_SAMPLE); |
| } |
| |
| void tegra_dc_sor_set_internal_panel(struct tegra_dc_sor_data *sor, int is_int) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_SPARE(sor->portnum)); |
| if (is_int) |
| reg_val |= NV_SOR_DP_SPARE_PANEL_INTERNAL; |
| else |
| reg_val &= ~NV_SOR_DP_SPARE_PANEL_INTERNAL; |
| |
| reg_val |= NV_SOR_DP_SPARE_SOR_CLK_SEL_MACRO_SORCLK | |
| NV_SOR_DP_SPARE_SEQ_ENABLE_YES; |
| tegra_sor_writel(sor, NV_SOR_DP_SPARE(sor->portnum), reg_val); |
| } |
| |
| void tegra_dc_sor_read_link_config(struct tegra_dc_sor_data *sor, u8 *link_bw, |
| u8 *lane_count) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_CLK_CNTRL); |
| *link_bw = (reg_val & NV_SOR_CLK_CNTRL_DP_LINK_SPEED_MASK) |
| >> NV_SOR_CLK_CNTRL_DP_LINK_SPEED_SHIFT; |
| reg_val = tegra_sor_readl(sor, |
| NV_SOR_DP_LINKCTL(sor->portnum)); |
| |
| switch (reg_val & NV_SOR_DP_LINKCTL_LANECOUNT_MASK) { |
| case NV_SOR_DP_LINKCTL_LANECOUNT_ZERO: |
| *lane_count = 0; |
| break; |
| case NV_SOR_DP_LINKCTL_LANECOUNT_ONE: |
| *lane_count = 1; |
| break; |
| case NV_SOR_DP_LINKCTL_LANECOUNT_TWO: |
| *lane_count = 2; |
| break; |
| case NV_SOR_DP_LINKCTL_LANECOUNT_FOUR: |
| *lane_count = 4; |
| break; |
| default: |
| printk(BIOS_ERR, "Unknown lane count\n"); |
| } |
| } |
| |
| void tegra_dc_sor_set_link_bandwidth(struct tegra_dc_sor_data *sor, u8 link_bw) |
| { |
| tegra_sor_write_field(sor, NV_SOR_CLK_CNTRL, |
| NV_SOR_CLK_CNTRL_DP_LINK_SPEED_MASK, |
| link_bw << NV_SOR_CLK_CNTRL_DP_LINK_SPEED_SHIFT); |
| } |
| |
| void tegra_dc_sor_set_lane_count(struct tegra_dc_sor_data *sor, u8 lane_count) |
| { |
| u32 reg_val; |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_DP_LINKCTL(sor->portnum)); |
| reg_val &= ~NV_SOR_DP_LINKCTL_LANECOUNT_MASK; |
| switch (lane_count) { |
| case 0: |
| break; |
| case 1: |
| reg_val |= NV_SOR_DP_LINKCTL_LANECOUNT_ONE; |
| break; |
| case 2: |
| reg_val |= NV_SOR_DP_LINKCTL_LANECOUNT_TWO; |
| break; |
| case 4: |
| reg_val |= NV_SOR_DP_LINKCTL_LANECOUNT_FOUR; |
| break; |
| default: |
| /* 0 should be handled earlier. */ |
| printk(BIOS_ERR, "dp: Invalid lane count %d\n", |
| lane_count); |
| return; |
| } |
| tegra_sor_writel(sor, NV_SOR_DP_LINKCTL(sor->portnum), reg_val); |
| } |
| |
| static void tegra_sor_enable_edp_clock(struct tegra_dc_sor_data *sor) |
| { |
| sor_clock_start(); |
| } |
| |
| /* The SOR power sequencer does not work for t124/T132 so SW has to |
| go through the power sequence manually */ |
| /* Power up steps from spec: */ |
| /* STEP PDPORT PDPLL PDBG PLLVCOD PLLCAPD E_DPD PDCAL */ |
| /* 1 1 1 1 1 1 1 1 */ |
| /* 2 1 1 1 1 1 0 1 */ |
| /* 3 1 1 0 1 1 0 1 */ |
| /* 4 1 0 0 0 0 0 1 */ |
| /* 5 0 0 0 0 0 0 1 */ |
| static void tegra_dc_sor_power_up(struct tegra_dc_sor_data *sor, |
| int is_lvds) |
| { |
| if (sor->power_is_up) |
| return; |
| |
| /* Set link bw */ |
| tegra_dc_sor_set_link_bandwidth(sor, |
| is_lvds ? NV_SOR_CLK_CNTRL_DP_LINK_SPEED_LVDS : |
| NV_SOR_CLK_CNTRL_DP_LINK_SPEED_G1_62); |
| |
| /* step 1 */ |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX7_PORT_POWERDOWN_MASK | /* PDPORT */ |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_MASK | /* PDBG */ |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK, /* PLLCAPD */ |
| NV_SOR_PLL2_AUX7_PORT_POWERDOWN_ENABLE | |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_ENABLE | |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_ENABLE); |
| tegra_sor_write_field(sor, NV_SOR_PLL0, |
| NV_SOR_PLL0_PWR_MASK | /* PDPLL */ |
| NV_SOR_PLL0_VCOPD_MASK, /* PLLVCOPD */ |
| NV_SOR_PLL0_PWR_OFF | |
| NV_SOR_PLL0_VCOPD_ASSERT); |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| NV_SOR_DP_PADCTL_PAD_CAL_PD_POWERDOWN, /* PDCAL */ |
| NV_SOR_DP_PADCTL_PAD_CAL_PD_POWERUP); |
| |
| /* step 2 */ |
| tegra_dc_sor_io_set_dpd(sor, 1); |
| udelay(15); |
| |
| /* step 3 */ |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_MASK, |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_DISABLE); |
| udelay(25); |
| |
| /* step 4 */ |
| tegra_sor_write_field(sor, NV_SOR_PLL0, |
| NV_SOR_PLL0_PWR_MASK | /* PDPLL */ |
| NV_SOR_PLL0_VCOPD_MASK, /* PLLVCOPD */ |
| NV_SOR_PLL0_PWR_ON | NV_SOR_PLL0_VCOPD_RESCIND); |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK, /* PLLCAPD */ |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE); |
| udelay(225); |
| |
| /* step 5 */ |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX7_PORT_POWERDOWN_MASK, /* PDPORT */ |
| NV_SOR_PLL2_AUX7_PORT_POWERDOWN_DISABLE); |
| |
| sor->power_is_up = 1; |
| } |
| |
| #if DEBUG_SOR |
| static void dump_sor_reg(struct tegra_dc_sor_data *sor) |
| { |
| #define DUMP_REG(a) printk(BIOS_INFO, "%-32s %03x %08x\n", \ |
| #a, a, tegra_sor_readl(sor, a)); |
| |
| DUMP_REG(NV_SOR_SUPER_STATE0); |
| DUMP_REG(NV_SOR_SUPER_STATE1); |
| DUMP_REG(NV_SOR_STATE0); |
| DUMP_REG(NV_SOR_STATE1); |
| DUMP_REG(NV_HEAD_STATE0(0)); |
| DUMP_REG(NV_HEAD_STATE0(1)); |
| DUMP_REG(NV_HEAD_STATE1(0)); |
| DUMP_REG(NV_HEAD_STATE1(1)); |
| DUMP_REG(NV_HEAD_STATE2(0)); |
| DUMP_REG(NV_HEAD_STATE2(1)); |
| DUMP_REG(NV_HEAD_STATE3(0)); |
| DUMP_REG(NV_HEAD_STATE3(1)); |
| DUMP_REG(NV_HEAD_STATE4(0)); |
| DUMP_REG(NV_HEAD_STATE4(1)); |
| DUMP_REG(NV_HEAD_STATE5(0)); |
| DUMP_REG(NV_HEAD_STATE5(1)); |
| DUMP_REG(NV_SOR_CRC_CNTRL); |
| DUMP_REG(NV_SOR_CLK_CNTRL); |
| DUMP_REG(NV_SOR_CAP); |
| DUMP_REG(NV_SOR_PWR); |
| DUMP_REG(NV_SOR_TEST); |
| DUMP_REG(NV_SOR_PLL0); |
| DUMP_REG(NV_SOR_PLL1); |
| DUMP_REG(NV_SOR_PLL2); |
| DUMP_REG(NV_SOR_PLL3); |
| DUMP_REG(NV_SOR_CSTM); |
| DUMP_REG(NV_SOR_LVDS); |
| DUMP_REG(NV_SOR_CRCA); |
| DUMP_REG(NV_SOR_CRCB); |
| DUMP_REG(NV_SOR_SEQ_CTL); |
| DUMP_REG(NV_SOR_LANE_SEQ_CTL); |
| DUMP_REG(NV_SOR_SEQ_INST(0)); |
| DUMP_REG(NV_SOR_SEQ_INST(1)); |
| DUMP_REG(NV_SOR_SEQ_INST(2)); |
| DUMP_REG(NV_SOR_SEQ_INST(3)); |
| DUMP_REG(NV_SOR_SEQ_INST(4)); |
| DUMP_REG(NV_SOR_SEQ_INST(5)); |
| DUMP_REG(NV_SOR_SEQ_INST(6)); |
| DUMP_REG(NV_SOR_SEQ_INST(7)); |
| DUMP_REG(NV_SOR_SEQ_INST(8)); |
| DUMP_REG(NV_SOR_PWM_DIV); |
| DUMP_REG(NV_SOR_PWM_CTL); |
| DUMP_REG(NV_SOR_MSCHECK); |
| DUMP_REG(NV_SOR_XBAR_CTRL); |
| DUMP_REG(NV_SOR_DP_LINKCTL(0)); |
| DUMP_REG(NV_SOR_DP_LINKCTL(1)); |
| DUMP_REG(NV_SOR_DC(0)); |
| DUMP_REG(NV_SOR_DC(1)); |
| DUMP_REG(NV_SOR_LANE_DRIVE_CURRENT(0)); |
| DUMP_REG(NV_SOR_PR(0)); |
| DUMP_REG(NV_SOR_LANE4_PREEMPHASIS(0)); |
| DUMP_REG(NV_SOR_POSTCURSOR(0)); |
| DUMP_REG(NV_SOR_DP_CONFIG(0)); |
| DUMP_REG(NV_SOR_DP_CONFIG(1)); |
| DUMP_REG(NV_SOR_DP_MN(0)); |
| DUMP_REG(NV_SOR_DP_MN(1)); |
| DUMP_REG(NV_SOR_DP_PADCTL(0)); |
| DUMP_REG(NV_SOR_DP_PADCTL(1)); |
| DUMP_REG(NV_SOR_DP_DEBUG(0)); |
| DUMP_REG(NV_SOR_DP_DEBUG(1)); |
| DUMP_REG(NV_SOR_DP_SPARE(0)); |
| DUMP_REG(NV_SOR_DP_SPARE(1)); |
| DUMP_REG(NV_SOR_DP_TPG); |
| |
| return; |
| } |
| #endif |
| |
| static void tegra_dc_sor_config_panel(struct tegra_dc_sor_data *sor, |
| int is_lvds) |
| { |
| const struct tegra_dc *dc = sor->dc; |
| const struct tegra_dc_dp_data *dp = dc->out; |
| const struct tegra_dc_dp_link_config *link_cfg = &dp->link_cfg; |
| const struct soc_nvidia_tegra132_config *config = dc->config; |
| |
| const int head_num = 0; |
| u32 reg_val = NV_SOR_STATE1_ASY_OWNER_HEAD0 << head_num; |
| u32 vsync_end, hsync_end; |
| u32 vblank_end, hblank_end; |
| u32 vblank_start, hblank_start; |
| |
| reg_val |= is_lvds ? NV_SOR_STATE1_ASY_PROTOCOL_LVDS_CUSTOM : |
| NV_SOR_STATE1_ASY_PROTOCOL_DP_A; |
| reg_val |= NV_SOR_STATE1_ASY_SUBOWNER_NONE | |
| NV_SOR_STATE1_ASY_CRCMODE_COMPLETE_RASTER; |
| |
| reg_val |= NV_SOR_STATE1_ASY_HSYNCPOL_NEGATIVE_TRUE; |
| reg_val |= NV_SOR_STATE1_ASY_VSYNCPOL_NEGATIVE_TRUE; |
| reg_val |= (link_cfg->bits_per_pixel > 18) ? |
| NV_SOR_STATE1_ASY_PIXELDEPTH_BPP_24_444 : |
| NV_SOR_STATE1_ASY_PIXELDEPTH_BPP_18_444; |
| |
| tegra_sor_writel(sor, NV_SOR_STATE1, reg_val); |
| |
| /* Skipping programming NV_HEAD_STATE0, assuming: |
| interlacing: PROGRESSIVE, dynamic range: VESA, colorspace: RGB */ |
| |
| tegra_sor_writel(sor, NV_HEAD_STATE1(head_num), |
| vtotal(config) << NV_HEAD_STATE1_VTOTAL_SHIFT | |
| htotal(config) << NV_HEAD_STATE1_HTOTAL_SHIFT); |
| |
| vsync_end = config->vsync_width - 1; |
| hsync_end = config->hsync_width - 1; |
| tegra_sor_writel(sor, NV_HEAD_STATE2(head_num), |
| vsync_end << NV_HEAD_STATE2_VSYNC_END_SHIFT | |
| hsync_end << NV_HEAD_STATE2_HSYNC_END_SHIFT); |
| |
| vblank_end = vsync_end + config->vback_porch; |
| hblank_end = hsync_end + config->hback_porch; |
| tegra_sor_writel(sor, NV_HEAD_STATE3(head_num), |
| vblank_end << NV_HEAD_STATE3_VBLANK_END_SHIFT | |
| hblank_end << NV_HEAD_STATE3_HBLANK_END_SHIFT); |
| |
| vblank_start = vblank_end + config->yres; |
| hblank_start = hblank_end + config->xres; |
| tegra_sor_writel(sor, NV_HEAD_STATE4(head_num), |
| vblank_start << NV_HEAD_STATE4_VBLANK_START_SHIFT | |
| hblank_start << NV_HEAD_STATE4_HBLANK_START_SHIFT); |
| |
| /* TODO: adding interlace mode support */ |
| tegra_sor_writel(sor, NV_HEAD_STATE5(head_num), 0x1); |
| |
| tegra_sor_write_field(sor, NV_SOR_CSTM, |
| NV_SOR_CSTM_ROTCLK_DEFAULT_MASK | |
| NV_SOR_CSTM_LVDS_EN_ENABLE, |
| 2 << NV_SOR_CSTM_ROTCLK_SHIFT | |
| is_lvds ? NV_SOR_CSTM_LVDS_EN_ENABLE : |
| NV_SOR_CSTM_LVDS_EN_DISABLE); |
| |
| tegra_dc_sor_config_pwm(sor, 1024, 1024); |
| } |
| |
| static void tegra_dc_sor_enable_dc(struct tegra_dc_sor_data *sor) |
| { |
| struct tegra_dc *dc = sor->dc; |
| struct display_controller *disp_ctrl = (void *)dc->base; |
| |
| u32 reg_val = READL(&disp_ctrl->cmd.state_access); |
| |
| WRITEL(reg_val | WRITE_MUX_ACTIVE, &disp_ctrl->cmd.state_access); |
| WRITEL(VSYNC_H_POSITION(1), &disp_ctrl->disp.disp_timing_opt); |
| |
| /* Enable DC now - otherwise pure text console may not show. */ |
| WRITEL(DISP_CTRL_MODE_C_DISPLAY, &disp_ctrl->cmd.disp_cmd); |
| WRITEL(reg_val, &disp_ctrl->cmd.state_access); |
| } |
| |
| void tegra_dc_sor_enable_dp(struct tegra_dc_sor_data *sor) |
| { |
| const struct tegra_dc_dp_link_config *link_cfg = sor->link_cfg; |
| |
| tegra_sor_write_field(sor, NV_SOR_CLK_CNTRL, |
| NV_SOR_CLK_CNTRL_DP_CLK_SEL_MASK, |
| NV_SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK); |
| |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_MASK, |
| NV_SOR_PLL2_AUX6_BANDGAP_POWERDOWN_DISABLE); |
| udelay(25); |
| |
| tegra_sor_write_field(sor, NV_SOR_PLL3, |
| NV_SOR_PLL3_PLLVDD_MODE_MASK, |
| NV_SOR_PLL3_PLLVDD_MODE_V3_3); |
| tegra_sor_writel(sor, NV_SOR_PLL0, |
| 0xf << NV_SOR_PLL0_ICHPMP_SHFIT | |
| 0x3 << NV_SOR_PLL0_VCOCAP_SHIFT | |
| NV_SOR_PLL0_PLLREG_LEVEL_V45 | |
| NV_SOR_PLL0_RESISTORSEL_EXT | |
| NV_SOR_PLL0_PWR_ON | NV_SOR_PLL0_VCOPD_RESCIND); |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX1_SEQ_MASK | NV_SOR_PLL2_AUX9_LVDSEN_OVERRIDE | |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK, |
| NV_SOR_PLL2_AUX1_SEQ_PLLCAPPD_OVERRIDE | |
| NV_SOR_PLL2_AUX9_LVDSEN_OVERRIDE | |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE); |
| tegra_sor_writel(sor, NV_SOR_PLL1, |
| NV_SOR_PLL1_TERM_COMPOUT_HIGH | NV_SOR_PLL1_TMDS_TERM_ENABLE); |
| |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK, |
| NV_SOR_PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE, |
| 100, TEGRA_SOR_TIMEOUT_MS * 1000)) { |
| printk(BIOS_ERR, "DP failed to lock PLL\n"); |
| return; |
| } |
| |
| tegra_sor_write_field(sor, NV_SOR_PLL2, |
| NV_SOR_PLL2_AUX2_MASK | NV_SOR_PLL2_AUX7_PORT_POWERDOWN_MASK, |
| NV_SOR_PLL2_AUX2_OVERRIDE_POWERDOWN | |
| NV_SOR_PLL2_AUX7_PORT_POWERDOWN_DISABLE); |
| |
| tegra_dc_sor_power_up(sor, 0); |
| |
| /* re-enable SOR clock */ |
| tegra_sor_enable_edp_clock(sor); /* select pll_dp as clock source */ |
| |
| /* Power up lanes */ |
| tegra_dc_sor_power_dplanes(sor, link_cfg->lane_count, 1); |
| |
| tegra_dc_sor_set_dp_mode(sor, link_cfg); |
| |
| } |
| |
| void tegra_dc_sor_attach(struct tegra_dc_sor_data *sor) |
| { |
| u32 reg_val; |
| struct display_controller *disp_ctrl = (void *)sor->dc->base; |
| |
| tegra_dc_sor_enable_dc(sor); |
| tegra_dc_sor_config_panel(sor, 0); |
| |
| WRITEL(0x9f00, &disp_ctrl->cmd.state_ctrl); |
| WRITEL(0x9f, &disp_ctrl->cmd.state_ctrl); |
| |
| WRITEL(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | |
| PW3_ENABLE | PW4_ENABLE | PM0_ENABLE | PM1_ENABLE, |
| &disp_ctrl->cmd.disp_pow_ctrl); |
| |
| reg_val = tegra_sor_readl(sor, NV_SOR_TEST); |
| if (reg_val & NV_SOR_TEST_ATTACHED_TRUE) |
| return; |
| |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE1, |
| NV_SOR_SUPER_STATE1_ATTACHED_NO); |
| |
| /* |
| * Enable display2sor clock at least 2 cycles before DC start, |
| * to clear sor internal valid signal. |
| */ |
| |
| /* Stop dc for 3 cycles */ |
| WRITEL(0, &disp_ctrl->disp.disp_win_opt); |
| WRITEL(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl); |
| udelay(FRAME_IN_MS * 1000 * 3); |
| |
| /* Attach head */ |
| tegra_dc_sor_update(sor); |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE1, |
| NV_SOR_SUPER_STATE1_ATTACHED_YES); |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE1, |
| NV_SOR_SUPER_STATE1_ATTACHED_YES | |
| NV_SOR_SUPER_STATE1_ASY_HEAD_OP_AWAKE | |
| NV_SOR_SUPER_STATE1_ASY_ORMODE_NORMAL); |
| tegra_dc_sor_super_update(sor); |
| |
| /* wait for another 5 cycles */ |
| udelay(FRAME_IN_MS * 1000 * 5); |
| |
| /* Re-enable dc */ |
| WRITEL(READ_MUX_ACTIVE | WRITE_MUX_ACTIVE, |
| &disp_ctrl->cmd.state_access); |
| WRITEL(SOR_ENABLE, &disp_ctrl->disp.disp_win_opt); |
| |
| WRITEL(DISP_CTRL_MODE_C_DISPLAY, &disp_ctrl->cmd.disp_cmd); |
| WRITEL(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl); |
| |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_TEST, |
| NV_SOR_TEST_ACT_HEAD_OPMODE_DEFAULT_MASK, |
| NV_SOR_TEST_ACT_HEAD_OPMODE_AWAKE, |
| 100, TEGRA_SOR_ATTACH_TIMEOUT_MS * 1000)) |
| printk(BIOS_ERR, "dc timeout waiting for OPMOD = AWAKE\n"); |
| else |
| printk(BIOS_INFO, "%s: sor is attached\n", __func__); |
| |
| #if DEBUG_SOR |
| dump_sor_reg(sor); |
| #endif |
| } |
| |
| void tegra_dc_sor_set_lane_parm(struct tegra_dc_sor_data *sor, |
| const struct tegra_dc_dp_link_config *link_cfg) |
| { |
| tegra_sor_writel(sor, NV_SOR_LANE_DRIVE_CURRENT(sor->portnum), |
| link_cfg->drive_current); |
| tegra_sor_writel(sor, NV_SOR_PR(sor->portnum), |
| link_cfg->preemphasis); |
| tegra_sor_writel(sor, NV_SOR_POSTCURSOR(sor->portnum), |
| link_cfg->postcursor); |
| tegra_sor_writel(sor, NV_SOR_LVDS, 0); |
| |
| tegra_dc_sor_set_link_bandwidth(sor, link_cfg->link_bw); |
| tegra_dc_sor_set_lane_count(sor, link_cfg->lane_count); |
| |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| NV_SOR_DP_PADCTL_TX_PU_ENABLE | |
| NV_SOR_DP_PADCTL_TX_PU_VALUE_DEFAULT_MASK, |
| NV_SOR_DP_PADCTL_TX_PU_ENABLE | |
| 2 << NV_SOR_DP_PADCTL_TX_PU_VALUE_SHIFT); |
| |
| /* Precharge */ |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| 0xf0, 0xf0); |
| udelay(20); |
| |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| 0xf0, 0x0); |
| } |
| |
| void tegra_dc_sor_set_voltage_swing(struct tegra_dc_sor_data *sor) |
| { |
| u32 drive_current = 0; |
| u32 pre_emphasis = 0; |
| |
| /* Set to a known-good pre-calibrated setting */ |
| switch (sor->link_cfg->link_bw) { |
| case SOR_LINK_SPEED_G1_62: |
| case SOR_LINK_SPEED_G2_7: |
| drive_current = 0x13131313; |
| pre_emphasis = 0; |
| break; |
| case SOR_LINK_SPEED_G5_4: |
| printk(BIOS_WARNING, "T124/T132 does not support 5.4G link" |
| " clock.\n"); |
| default: |
| printk(BIOS_WARNING, "Invalid sor link bandwidth: %d\n", |
| sor->link_cfg->link_bw); |
| return; |
| } |
| |
| tegra_sor_writel(sor, NV_SOR_LANE_DRIVE_CURRENT(sor->portnum), |
| drive_current); |
| tegra_sor_writel(sor, NV_SOR_PR(sor->portnum), pre_emphasis); |
| } |
| |
| void tegra_dc_sor_power_down_unused_lanes(struct tegra_dc_sor_data *sor) |
| { |
| u32 pad_ctrl = 0; |
| int err = 0; |
| |
| switch (sor->link_cfg->lane_count) { |
| case 4: |
| pad_ctrl = (NV_SOR_DP_PADCTL_PD_TXD_0_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_1_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_2_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_3_NO); |
| break; |
| case 2: |
| pad_ctrl = (NV_SOR_DP_PADCTL_PD_TXD_0_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_1_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_2_YES | |
| NV_SOR_DP_PADCTL_PD_TXD_3_YES); |
| break; |
| case 1: |
| pad_ctrl = (NV_SOR_DP_PADCTL_PD_TXD_0_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_1_YES | |
| NV_SOR_DP_PADCTL_PD_TXD_2_YES | |
| NV_SOR_DP_PADCTL_PD_TXD_3_YES); |
| break; |
| default: |
| printk(BIOS_ERR, "Invalid sor lane count: %u\n", |
| sor->link_cfg->lane_count); |
| return; |
| } |
| |
| pad_ctrl |= NV_SOR_DP_PADCTL_PAD_CAL_PD_POWERDOWN; |
| tegra_sor_writel(sor, NV_SOR_DP_PADCTL(sor->portnum), pad_ctrl); |
| |
| err = tegra_dc_sor_enable_lane_sequencer(sor, 0, 0); |
| if (err) { |
| printk(BIOS_ERR, |
| "Wait for lane power down failed: %d\n", err); |
| return; |
| } |
| } |
| |
| void tegra_sor_precharge_lanes(struct tegra_dc_sor_data *sor) |
| { |
| const struct tegra_dc_dp_link_config *cfg = sor->link_cfg; |
| u32 val = 0; |
| |
| switch (cfg->lane_count) { |
| case 4: |
| val |= (NV_SOR_DP_PADCTL_PD_TXD_3_NO | |
| NV_SOR_DP_PADCTL_PD_TXD_2_NO); |
| /* fall through */ |
| case 2: |
| val |= NV_SOR_DP_PADCTL_PD_TXD_1_NO; |
| /* fall through */ |
| case 1: |
| val |= NV_SOR_DP_PADCTL_PD_TXD_0_NO; |
| break; |
| default: |
| printk(BIOS_ERR, |
| "dp: invalid lane number %d\n", cfg->lane_count); |
| return; |
| } |
| |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| (0xf << NV_SOR_DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT), |
| (val << NV_SOR_DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT)); |
| udelay(100); |
| tegra_sor_write_field(sor, NV_SOR_DP_PADCTL(sor->portnum), |
| (0xf << NV_SOR_DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT), 0); |
| } |
| |
| static u32 tegra_dc_poll_register(void *reg, |
| u32 mask, u32 exp_val, u32 poll_interval_us, u32 timeout_us) |
| { |
| u32 temp = timeout_us; |
| u32 reg_val = 0; |
| |
| do { |
| udelay(poll_interval_us); |
| reg_val = READL(reg); |
| if (timeout_us > poll_interval_us) |
| timeout_us -= poll_interval_us; |
| else |
| break; |
| } while ((reg_val & mask) != exp_val); |
| |
| if ((reg_val & mask) == exp_val) |
| return 0; /* success */ |
| |
| return temp; |
| } |
| |
| static void tegra_dc_sor_general_act(struct display_controller *disp_ctrl) |
| { |
| WRITEL(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl); |
| |
| if (tegra_dc_poll_register(&disp_ctrl->cmd.state_ctrl, |
| GENERAL_ACT_REQ, 0, 100, |
| TEGRA_DC_POLL_TIMEOUT_MS*1000)) |
| printk(BIOS_ERR, |
| "dc timeout waiting for DC to stop\n"); |
| } |
| |
| static struct tegra_dc_mode min_mode = { |
| .h_ref_to_sync = 0, |
| .v_ref_to_sync = 1, |
| .h_sync_width = 1, |
| .v_sync_width = 1, |
| .h_back_porch = 20, |
| .v_back_porch = 0, |
| .h_active = 16, |
| .v_active = 16, |
| .h_front_porch = 1, |
| .v_front_porch = 2, |
| }; |
| |
| /* Disable windows and set minimum raster timings */ |
| static void |
| tegra_dc_sor_disable_win_short_raster(struct display_controller *disp_ctrl, |
| int *dc_reg_ctx) |
| { |
| int selected_windows, i; |
| |
| selected_windows = READL(&disp_ctrl->cmd.disp_win_header); |
| |
| /* Store and clear window options */ |
| for (i = 0; i < DC_N_WINDOWS; ++i) { |
| WRITEL(WINDOW_A_SELECT << i, &disp_ctrl->cmd.disp_win_header); |
| dc_reg_ctx[i] = READL(&disp_ctrl->win.win_opt); |
| WRITEL(0, &disp_ctrl->win.win_opt); |
| WRITEL(WIN_A_ACT_REQ << i, &disp_ctrl->cmd.state_ctrl); |
| } |
| |
| WRITEL(selected_windows, &disp_ctrl->cmd.disp_win_header); |
| |
| /* Store current raster timings and set minimum timings */ |
| dc_reg_ctx[i++] = READL(&disp_ctrl->disp.ref_to_sync); |
| WRITEL(min_mode.h_ref_to_sync | (min_mode.v_ref_to_sync << 16), |
| &disp_ctrl->disp.ref_to_sync); |
| |
| dc_reg_ctx[i++] = READL(&disp_ctrl->disp.sync_width); |
| WRITEL(min_mode.h_sync_width | (min_mode.v_sync_width << 16), |
| &disp_ctrl->disp.sync_width); |
| |
| dc_reg_ctx[i++] = READL(&disp_ctrl->disp.back_porch); |
| WRITEL(min_mode.h_back_porch | |
| min_mode.v_back_porch << 16, |
| &disp_ctrl->disp.back_porch); |
| |
| dc_reg_ctx[i++] = READL(&disp_ctrl->disp.front_porch); |
| WRITEL(min_mode.h_front_porch | |
| min_mode.v_front_porch << 16, |
| &disp_ctrl->disp.front_porch); |
| |
| dc_reg_ctx[i++] = READL(&disp_ctrl->disp.disp_active); |
| WRITEL(min_mode.h_active | (min_mode.v_active << 16), |
| &disp_ctrl->disp.disp_active); |
| |
| WRITEL(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl); |
| } |
| |
| /* Restore previous windows status and raster timings */ |
| static void |
| tegra_dc_sor_restore_win_and_raster(struct display_controller *disp_ctrl, |
| int *dc_reg_ctx) |
| { |
| int selected_windows, i; |
| |
| selected_windows = READL(&disp_ctrl->cmd.disp_win_header); |
| |
| for (i = 0; i < DC_N_WINDOWS; ++i) { |
| WRITEL(WINDOW_A_SELECT << i, &disp_ctrl->cmd.disp_win_header); |
| WRITEL(dc_reg_ctx[i], &disp_ctrl->win.win_opt); |
| WRITEL(WIN_A_ACT_REQ << i, &disp_ctrl->cmd.state_ctrl); |
| } |
| |
| WRITEL(selected_windows, &disp_ctrl->cmd.disp_win_header); |
| |
| WRITEL(dc_reg_ctx[i++], &disp_ctrl->disp.ref_to_sync); |
| WRITEL(dc_reg_ctx[i++], &disp_ctrl->disp.sync_width); |
| WRITEL(dc_reg_ctx[i++], &disp_ctrl->disp.back_porch); |
| WRITEL(dc_reg_ctx[i++], &disp_ctrl->disp.front_porch); |
| WRITEL(dc_reg_ctx[i++], &disp_ctrl->disp.disp_active); |
| |
| WRITEL(GENERAL_UPDATE, &disp_ctrl->cmd.state_ctrl); |
| } |
| |
| static void tegra_dc_sor_enable_sor(struct tegra_dc_sor_data *sor, int enable) |
| { |
| struct display_controller *disp_ctrl = (void *)sor->dc->base; |
| u32 reg_val = READL(&disp_ctrl->disp.disp_win_opt); |
| |
| reg_val = enable ? reg_val | SOR_ENABLE : reg_val & ~SOR_ENABLE; |
| WRITEL(reg_val, &disp_ctrl->disp.disp_win_opt); |
| } |
| |
| void tegra_dc_detach(struct tegra_dc_sor_data *sor) |
| { |
| struct display_controller *disp_ctrl = (void *)sor->dc->base; |
| int dc_reg_ctx[DC_N_WINDOWS + 5]; |
| unsigned long dc_int_mask; |
| |
| /* Sleep mode */ |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE1, |
| NV_SOR_SUPER_STATE1_ASY_HEAD_OP_SLEEP | |
| NV_SOR_SUPER_STATE1_ASY_ORMODE_SAFE | |
| NV_SOR_SUPER_STATE1_ATTACHED_YES); |
| tegra_dc_sor_super_update(sor); |
| |
| tegra_dc_sor_disable_win_short_raster(disp_ctrl, dc_reg_ctx); |
| |
| if (tegra_dc_sor_poll_register(sor, NV_SOR_TEST, |
| NV_SOR_TEST_ACT_HEAD_OPMODE_DEFAULT_MASK, |
| NV_SOR_TEST_ACT_HEAD_OPMODE_SLEEP, |
| 100, TEGRA_SOR_ATTACH_TIMEOUT_MS*1000)) { |
| printk(BIOS_ERR, |
| "dc timeout waiting for OPMOD = SLEEP\n"); |
| } |
| |
| tegra_sor_writel(sor, NV_SOR_SUPER_STATE1, |
| NV_SOR_SUPER_STATE1_ASY_HEAD_OP_SLEEP | |
| NV_SOR_SUPER_STATE1_ASY_ORMODE_SAFE | |
| NV_SOR_SUPER_STATE1_ATTACHED_NO); |
| |
| /* Mask DC interrupts during the 2 dummy frames required for detach */ |
| dc_int_mask = READL(&disp_ctrl->cmd.int_mask); |
| WRITEL(0, &disp_ctrl->cmd.int_mask); |
| |
| /* Stop DC->SOR path */ |
| tegra_dc_sor_enable_sor(sor, 0); |
| tegra_dc_sor_general_act(disp_ctrl); |
| |
| /* Stop DC */ |
| WRITEL(DISP_CTRL_MODE_STOP, &disp_ctrl->cmd.disp_cmd); |
| tegra_dc_sor_general_act(disp_ctrl); |
| |
| tegra_dc_sor_restore_win_and_raster(disp_ctrl, dc_reg_ctx); |
| |
| WRITEL(dc_int_mask, &disp_ctrl->cmd.int_mask); |
| } |