forked from Minki/linux
9a69a9ac20
This is required to properly handle failing dpms calls. When making a wait in i915 interruptible, I've noticed that the dpms sequence could fail with -ERESTARTSYS because it was waiting interruptibly for flips. So from now on allow drivers to fail in their connector dpms callback. Encoder and crtc dpms callbacks are unaffected. Changes since v1: - Update kerneldoc for the drm helper functions. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> [danvet: Resolve conflicts due to different merge order.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1681 lines
41 KiB
C
1681 lines
41 KiB
C
/*
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* Copyright (C) 2013 NVIDIA Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/debugfs.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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#include <soc/tegra/pmc.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_dp_helper.h>
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#include <drm/drm_panel.h>
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#include "dc.h"
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#include "drm.h"
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#include "sor.h"
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struct tegra_sor {
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struct host1x_client client;
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struct tegra_output output;
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struct device *dev;
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void __iomem *regs;
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struct reset_control *rst;
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struct clk *clk_parent;
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struct clk *clk_safe;
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struct clk *clk_dp;
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struct clk *clk;
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struct tegra_dpaux *dpaux;
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struct mutex lock;
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bool enabled;
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struct drm_info_list *debugfs_files;
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struct drm_minor *minor;
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struct dentry *debugfs;
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};
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struct tegra_sor_config {
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u32 bits_per_pixel;
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u32 active_polarity;
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u32 active_count;
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u32 tu_size;
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u32 active_frac;
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u32 watermark;
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u32 hblank_symbols;
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u32 vblank_symbols;
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};
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static inline struct tegra_sor *
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host1x_client_to_sor(struct host1x_client *client)
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{
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return container_of(client, struct tegra_sor, client);
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}
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static inline struct tegra_sor *to_sor(struct tegra_output *output)
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{
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return container_of(output, struct tegra_sor, output);
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}
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static inline u32 tegra_sor_readl(struct tegra_sor *sor, unsigned long offset)
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{
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return readl(sor->regs + (offset << 2));
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}
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static inline void tegra_sor_writel(struct tegra_sor *sor, u32 value,
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unsigned long offset)
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{
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writel(value, sor->regs + (offset << 2));
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}
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static int tegra_sor_dp_train_fast(struct tegra_sor *sor,
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struct drm_dp_link *link)
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{
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unsigned int i;
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u8 pattern;
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u32 value;
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int err;
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/* setup lane parameters */
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value = SOR_LANE_DRIVE_CURRENT_LANE3(0x40) |
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SOR_LANE_DRIVE_CURRENT_LANE2(0x40) |
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SOR_LANE_DRIVE_CURRENT_LANE1(0x40) |
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SOR_LANE_DRIVE_CURRENT_LANE0(0x40);
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tegra_sor_writel(sor, value, SOR_LANE_DRIVE_CURRENT_0);
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value = SOR_LANE_PREEMPHASIS_LANE3(0x0f) |
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SOR_LANE_PREEMPHASIS_LANE2(0x0f) |
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SOR_LANE_PREEMPHASIS_LANE1(0x0f) |
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SOR_LANE_PREEMPHASIS_LANE0(0x0f);
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tegra_sor_writel(sor, value, SOR_LANE_PREEMPHASIS_0);
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value = SOR_LANE_POST_CURSOR_LANE3(0x00) |
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SOR_LANE_POST_CURSOR_LANE2(0x00) |
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SOR_LANE_POST_CURSOR_LANE1(0x00) |
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SOR_LANE_POST_CURSOR_LANE0(0x00);
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tegra_sor_writel(sor, value, SOR_LANE_POST_CURSOR_0);
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/* disable LVDS mode */
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tegra_sor_writel(sor, 0, SOR_LVDS);
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value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
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value |= SOR_DP_PADCTL_TX_PU_ENABLE;
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value &= ~SOR_DP_PADCTL_TX_PU_MASK;
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value |= SOR_DP_PADCTL_TX_PU(2); /* XXX: don't hardcode? */
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tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
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value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
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value |= SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 |
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SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0;
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tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
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usleep_range(10, 100);
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value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
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value &= ~(SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 |
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SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0);
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tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
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err = tegra_dpaux_prepare(sor->dpaux, DP_SET_ANSI_8B10B);
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if (err < 0)
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return err;
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for (i = 0, value = 0; i < link->num_lanes; i++) {
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unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
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SOR_DP_TPG_SCRAMBLER_NONE |
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SOR_DP_TPG_PATTERN_TRAIN1;
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value = (value << 8) | lane;
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}
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tegra_sor_writel(sor, value, SOR_DP_TPG);
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pattern = DP_TRAINING_PATTERN_1;
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err = tegra_dpaux_train(sor->dpaux, link, pattern);
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if (err < 0)
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return err;
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value = tegra_sor_readl(sor, SOR_DP_SPARE_0);
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value |= SOR_DP_SPARE_SEQ_ENABLE;
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value &= ~SOR_DP_SPARE_PANEL_INTERNAL;
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value |= SOR_DP_SPARE_MACRO_SOR_CLK;
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tegra_sor_writel(sor, value, SOR_DP_SPARE_0);
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for (i = 0, value = 0; i < link->num_lanes; i++) {
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unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
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SOR_DP_TPG_SCRAMBLER_NONE |
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SOR_DP_TPG_PATTERN_TRAIN2;
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value = (value << 8) | lane;
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}
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tegra_sor_writel(sor, value, SOR_DP_TPG);
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pattern = DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_2;
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err = tegra_dpaux_train(sor->dpaux, link, pattern);
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if (err < 0)
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return err;
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for (i = 0, value = 0; i < link->num_lanes; i++) {
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unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
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SOR_DP_TPG_SCRAMBLER_GALIOS |
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SOR_DP_TPG_PATTERN_NONE;
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value = (value << 8) | lane;
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}
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tegra_sor_writel(sor, value, SOR_DP_TPG);
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pattern = DP_TRAINING_PATTERN_DISABLE;
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err = tegra_dpaux_train(sor->dpaux, link, pattern);
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if (err < 0)
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return err;
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return 0;
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}
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static void tegra_sor_super_update(struct tegra_sor *sor)
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{
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tegra_sor_writel(sor, 0, SOR_SUPER_STATE_0);
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tegra_sor_writel(sor, 1, SOR_SUPER_STATE_0);
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tegra_sor_writel(sor, 0, SOR_SUPER_STATE_0);
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}
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static void tegra_sor_update(struct tegra_sor *sor)
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{
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tegra_sor_writel(sor, 0, SOR_STATE_0);
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tegra_sor_writel(sor, 1, SOR_STATE_0);
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tegra_sor_writel(sor, 0, SOR_STATE_0);
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}
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static int tegra_sor_setup_pwm(struct tegra_sor *sor, unsigned long timeout)
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{
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u32 value;
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value = tegra_sor_readl(sor, SOR_PWM_DIV);
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value &= ~SOR_PWM_DIV_MASK;
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value |= 0x400; /* period */
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tegra_sor_writel(sor, value, SOR_PWM_DIV);
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value = tegra_sor_readl(sor, SOR_PWM_CTL);
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value &= ~SOR_PWM_CTL_DUTY_CYCLE_MASK;
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value |= 0x400; /* duty cycle */
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value &= ~SOR_PWM_CTL_CLK_SEL; /* clock source: PCLK */
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value |= SOR_PWM_CTL_TRIGGER;
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tegra_sor_writel(sor, value, SOR_PWM_CTL);
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timeout = jiffies + msecs_to_jiffies(timeout);
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while (time_before(jiffies, timeout)) {
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value = tegra_sor_readl(sor, SOR_PWM_CTL);
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if ((value & SOR_PWM_CTL_TRIGGER) == 0)
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return 0;
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usleep_range(25, 100);
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}
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return -ETIMEDOUT;
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}
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static int tegra_sor_attach(struct tegra_sor *sor)
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{
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unsigned long value, timeout;
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/* wake up in normal mode */
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value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
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value |= SOR_SUPER_STATE_HEAD_MODE_AWAKE;
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value |= SOR_SUPER_STATE_MODE_NORMAL;
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tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
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tegra_sor_super_update(sor);
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/* attach */
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value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
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value |= SOR_SUPER_STATE_ATTACHED;
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tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
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tegra_sor_super_update(sor);
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timeout = jiffies + msecs_to_jiffies(250);
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while (time_before(jiffies, timeout)) {
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value = tegra_sor_readl(sor, SOR_TEST);
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if ((value & SOR_TEST_ATTACHED) != 0)
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return 0;
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usleep_range(25, 100);
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}
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return -ETIMEDOUT;
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}
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static int tegra_sor_wakeup(struct tegra_sor *sor)
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{
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unsigned long value, timeout;
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timeout = jiffies + msecs_to_jiffies(250);
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/* wait for head to wake up */
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while (time_before(jiffies, timeout)) {
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value = tegra_sor_readl(sor, SOR_TEST);
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value &= SOR_TEST_HEAD_MODE_MASK;
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if (value == SOR_TEST_HEAD_MODE_AWAKE)
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return 0;
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usleep_range(25, 100);
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}
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return -ETIMEDOUT;
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}
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static int tegra_sor_power_up(struct tegra_sor *sor, unsigned long timeout)
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{
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u32 value;
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value = tegra_sor_readl(sor, SOR_PWR);
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value |= SOR_PWR_TRIGGER | SOR_PWR_NORMAL_STATE_PU;
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tegra_sor_writel(sor, value, SOR_PWR);
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timeout = jiffies + msecs_to_jiffies(timeout);
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while (time_before(jiffies, timeout)) {
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value = tegra_sor_readl(sor, SOR_PWR);
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if ((value & SOR_PWR_TRIGGER) == 0)
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return 0;
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usleep_range(25, 100);
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}
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return -ETIMEDOUT;
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}
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struct tegra_sor_params {
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/* number of link clocks per line */
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unsigned int num_clocks;
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/* ratio between input and output */
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u64 ratio;
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/* precision factor */
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u64 precision;
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unsigned int active_polarity;
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unsigned int active_count;
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unsigned int active_frac;
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unsigned int tu_size;
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unsigned int error;
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};
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static int tegra_sor_compute_params(struct tegra_sor *sor,
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struct tegra_sor_params *params,
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unsigned int tu_size)
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{
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u64 active_sym, active_count, frac, approx;
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u32 active_polarity, active_frac = 0;
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const u64 f = params->precision;
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s64 error;
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active_sym = params->ratio * tu_size;
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active_count = div_u64(active_sym, f) * f;
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frac = active_sym - active_count;
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/* fraction < 0.5 */
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if (frac >= (f / 2)) {
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active_polarity = 1;
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frac = f - frac;
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} else {
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active_polarity = 0;
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}
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if (frac != 0) {
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frac = div_u64(f * f, frac); /* 1/fraction */
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if (frac <= (15 * f)) {
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active_frac = div_u64(frac, f);
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/* round up */
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if (active_polarity)
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active_frac++;
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} else {
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active_frac = active_polarity ? 1 : 15;
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}
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}
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if (active_frac == 1)
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active_polarity = 0;
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if (active_polarity == 1) {
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if (active_frac) {
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approx = active_count + (active_frac * (f - 1)) * f;
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approx = div_u64(approx, active_frac * f);
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} else {
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approx = active_count + f;
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}
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} else {
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if (active_frac)
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approx = active_count + div_u64(f, active_frac);
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else
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approx = active_count;
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}
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error = div_s64(active_sym - approx, tu_size);
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error *= params->num_clocks;
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if (error <= 0 && abs64(error) < params->error) {
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params->active_count = div_u64(active_count, f);
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params->active_polarity = active_polarity;
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params->active_frac = active_frac;
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params->error = abs64(error);
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params->tu_size = tu_size;
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if (error == 0)
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return true;
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}
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return false;
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}
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static int tegra_sor_calc_config(struct tegra_sor *sor,
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struct drm_display_mode *mode,
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struct tegra_sor_config *config,
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struct drm_dp_link *link)
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{
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const u64 f = 100000, link_rate = link->rate * 1000;
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const u64 pclk = mode->clock * 1000;
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u64 input, output, watermark, num;
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struct tegra_sor_params params;
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u32 num_syms_per_line;
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unsigned int i;
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if (!link_rate || !link->num_lanes || !pclk || !config->bits_per_pixel)
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return -EINVAL;
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output = link_rate * 8 * link->num_lanes;
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input = pclk * config->bits_per_pixel;
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if (input >= output)
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return -ERANGE;
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memset(¶ms, 0, sizeof(params));
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params.ratio = div64_u64(input * f, output);
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params.num_clocks = div_u64(link_rate * mode->hdisplay, pclk);
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params.precision = f;
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params.error = 64 * f;
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params.tu_size = 64;
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for (i = params.tu_size; i >= 32; i--)
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if (tegra_sor_compute_params(sor, ¶ms, i))
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break;
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if (params.active_frac == 0) {
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config->active_polarity = 0;
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config->active_count = params.active_count;
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if (!params.active_polarity)
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config->active_count--;
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config->tu_size = params.tu_size;
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config->active_frac = 1;
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} else {
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config->active_polarity = params.active_polarity;
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config->active_count = params.active_count;
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config->active_frac = params.active_frac;
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config->tu_size = params.tu_size;
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}
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dev_dbg(sor->dev,
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"polarity: %d active count: %d tu size: %d active frac: %d\n",
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config->active_polarity, config->active_count,
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config->tu_size, config->active_frac);
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watermark = params.ratio * config->tu_size * (f - params.ratio);
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watermark = div_u64(watermark, f);
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watermark = div_u64(watermark + params.error, f);
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config->watermark = watermark + (config->bits_per_pixel / 8) + 2;
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num_syms_per_line = (mode->hdisplay * config->bits_per_pixel) *
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(link->num_lanes * 8);
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if (config->watermark > 30) {
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config->watermark = 30;
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dev_err(sor->dev,
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"unable to compute TU size, forcing watermark to %u\n",
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config->watermark);
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} else if (config->watermark > num_syms_per_line) {
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config->watermark = num_syms_per_line;
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dev_err(sor->dev, "watermark too high, forcing to %u\n",
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config->watermark);
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}
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/* compute the number of symbols per horizontal blanking interval */
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num = ((mode->htotal - mode->hdisplay) - 7) * link_rate;
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config->hblank_symbols = div_u64(num, pclk);
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if (link->capabilities & DP_LINK_CAP_ENHANCED_FRAMING)
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config->hblank_symbols -= 3;
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config->hblank_symbols -= 12 / link->num_lanes;
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/* compute the number of symbols per vertical blanking interval */
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num = (mode->hdisplay - 25) * link_rate;
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config->vblank_symbols = div_u64(num, pclk);
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config->vblank_symbols -= 36 / link->num_lanes + 4;
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dev_dbg(sor->dev, "blank symbols: H:%u V:%u\n", config->hblank_symbols,
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config->vblank_symbols);
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return 0;
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}
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static int tegra_sor_detach(struct tegra_sor *sor)
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{
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unsigned long value, timeout;
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/* switch to safe mode */
|
|
value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
|
|
value &= ~SOR_SUPER_STATE_MODE_NORMAL;
|
|
tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
|
|
tegra_sor_super_update(sor);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(250);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = tegra_sor_readl(sor, SOR_PWR);
|
|
if (value & SOR_PWR_MODE_SAFE)
|
|
break;
|
|
}
|
|
|
|
if ((value & SOR_PWR_MODE_SAFE) == 0)
|
|
return -ETIMEDOUT;
|
|
|
|
/* go to sleep */
|
|
value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
|
|
value &= ~SOR_SUPER_STATE_HEAD_MODE_MASK;
|
|
tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
|
|
tegra_sor_super_update(sor);
|
|
|
|
/* detach */
|
|
value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
|
|
value &= ~SOR_SUPER_STATE_ATTACHED;
|
|
tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
|
|
tegra_sor_super_update(sor);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(250);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = tegra_sor_readl(sor, SOR_TEST);
|
|
if ((value & SOR_TEST_ATTACHED) == 0)
|
|
break;
|
|
|
|
usleep_range(25, 100);
|
|
}
|
|
|
|
if ((value & SOR_TEST_ATTACHED) != 0)
|
|
return -ETIMEDOUT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_power_down(struct tegra_sor *sor)
|
|
{
|
|
unsigned long value, timeout;
|
|
int err;
|
|
|
|
value = tegra_sor_readl(sor, SOR_PWR);
|
|
value &= ~SOR_PWR_NORMAL_STATE_PU;
|
|
value |= SOR_PWR_TRIGGER;
|
|
tegra_sor_writel(sor, value, SOR_PWR);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(250);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = tegra_sor_readl(sor, SOR_PWR);
|
|
if ((value & SOR_PWR_TRIGGER) == 0)
|
|
return 0;
|
|
|
|
usleep_range(25, 100);
|
|
}
|
|
|
|
if ((value & SOR_PWR_TRIGGER) != 0)
|
|
return -ETIMEDOUT;
|
|
|
|
err = clk_set_parent(sor->clk, sor->clk_safe);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "failed to set safe parent clock: %d\n", err);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
|
|
value &= ~(SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_0 |
|
|
SOR_DP_PADCTL_PD_TXD_1 | SOR_DP_PADCTL_PD_TXD_2);
|
|
tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
|
|
|
|
/* stop lane sequencer */
|
|
value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_UP |
|
|
SOR_LANE_SEQ_CTL_POWER_STATE_DOWN;
|
|
tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(250);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL);
|
|
if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0)
|
|
break;
|
|
|
|
usleep_range(25, 100);
|
|
}
|
|
|
|
if ((value & SOR_LANE_SEQ_CTL_TRIGGER) != 0)
|
|
return -ETIMEDOUT;
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value |= SOR_PLL_2_PORT_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
usleep_range(20, 100);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_0);
|
|
value |= SOR_PLL_0_POWER_OFF;
|
|
value |= SOR_PLL_0_VCOPD;
|
|
tegra_sor_writel(sor, value, SOR_PLL_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value |= SOR_PLL_2_SEQ_PLLCAPPD;
|
|
value |= SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
usleep_range(20, 100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_crc_open(struct inode *inode, struct file *file)
|
|
{
|
|
file->private_data = inode->i_private;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_crc_release(struct inode *inode, struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_crc_wait(struct tegra_sor *sor, unsigned long timeout)
|
|
{
|
|
u32 value;
|
|
|
|
timeout = jiffies + msecs_to_jiffies(timeout);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = tegra_sor_readl(sor, SOR_CRC_A);
|
|
if (value & SOR_CRC_A_VALID)
|
|
return 0;
|
|
|
|
usleep_range(100, 200);
|
|
}
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
static ssize_t tegra_sor_crc_read(struct file *file, char __user *buffer,
|
|
size_t size, loff_t *ppos)
|
|
{
|
|
struct tegra_sor *sor = file->private_data;
|
|
ssize_t num, err;
|
|
char buf[10];
|
|
u32 value;
|
|
|
|
mutex_lock(&sor->lock);
|
|
|
|
if (!sor->enabled) {
|
|
err = -EAGAIN;
|
|
goto unlock;
|
|
}
|
|
|
|
value = tegra_sor_readl(sor, SOR_STATE_1);
|
|
value &= ~SOR_STATE_ASY_CRC_MODE_MASK;
|
|
tegra_sor_writel(sor, value, SOR_STATE_1);
|
|
|
|
value = tegra_sor_readl(sor, SOR_CRC_CNTRL);
|
|
value |= SOR_CRC_CNTRL_ENABLE;
|
|
tegra_sor_writel(sor, value, SOR_CRC_CNTRL);
|
|
|
|
value = tegra_sor_readl(sor, SOR_TEST);
|
|
value &= ~SOR_TEST_CRC_POST_SERIALIZE;
|
|
tegra_sor_writel(sor, value, SOR_TEST);
|
|
|
|
err = tegra_sor_crc_wait(sor, 100);
|
|
if (err < 0)
|
|
goto unlock;
|
|
|
|
tegra_sor_writel(sor, SOR_CRC_A_RESET, SOR_CRC_A);
|
|
value = tegra_sor_readl(sor, SOR_CRC_B);
|
|
|
|
num = scnprintf(buf, sizeof(buf), "%08x\n", value);
|
|
|
|
err = simple_read_from_buffer(buffer, size, ppos, buf, num);
|
|
|
|
unlock:
|
|
mutex_unlock(&sor->lock);
|
|
return err;
|
|
}
|
|
|
|
static const struct file_operations tegra_sor_crc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = tegra_sor_crc_open,
|
|
.read = tegra_sor_crc_read,
|
|
.release = tegra_sor_crc_release,
|
|
};
|
|
|
|
static int tegra_sor_show_regs(struct seq_file *s, void *data)
|
|
{
|
|
struct drm_info_node *node = s->private;
|
|
struct tegra_sor *sor = node->info_ent->data;
|
|
|
|
#define DUMP_REG(name) \
|
|
seq_printf(s, "%-38s %#05x %08x\n", #name, name, \
|
|
tegra_sor_readl(sor, name))
|
|
|
|
DUMP_REG(SOR_CTXSW);
|
|
DUMP_REG(SOR_SUPER_STATE_0);
|
|
DUMP_REG(SOR_SUPER_STATE_1);
|
|
DUMP_REG(SOR_STATE_0);
|
|
DUMP_REG(SOR_STATE_1);
|
|
DUMP_REG(SOR_HEAD_STATE_0(0));
|
|
DUMP_REG(SOR_HEAD_STATE_0(1));
|
|
DUMP_REG(SOR_HEAD_STATE_1(0));
|
|
DUMP_REG(SOR_HEAD_STATE_1(1));
|
|
DUMP_REG(SOR_HEAD_STATE_2(0));
|
|
DUMP_REG(SOR_HEAD_STATE_2(1));
|
|
DUMP_REG(SOR_HEAD_STATE_3(0));
|
|
DUMP_REG(SOR_HEAD_STATE_3(1));
|
|
DUMP_REG(SOR_HEAD_STATE_4(0));
|
|
DUMP_REG(SOR_HEAD_STATE_4(1));
|
|
DUMP_REG(SOR_HEAD_STATE_5(0));
|
|
DUMP_REG(SOR_HEAD_STATE_5(1));
|
|
DUMP_REG(SOR_CRC_CNTRL);
|
|
DUMP_REG(SOR_DP_DEBUG_MVID);
|
|
DUMP_REG(SOR_CLK_CNTRL);
|
|
DUMP_REG(SOR_CAP);
|
|
DUMP_REG(SOR_PWR);
|
|
DUMP_REG(SOR_TEST);
|
|
DUMP_REG(SOR_PLL_0);
|
|
DUMP_REG(SOR_PLL_1);
|
|
DUMP_REG(SOR_PLL_2);
|
|
DUMP_REG(SOR_PLL_3);
|
|
DUMP_REG(SOR_CSTM);
|
|
DUMP_REG(SOR_LVDS);
|
|
DUMP_REG(SOR_CRC_A);
|
|
DUMP_REG(SOR_CRC_B);
|
|
DUMP_REG(SOR_BLANK);
|
|
DUMP_REG(SOR_SEQ_CTL);
|
|
DUMP_REG(SOR_LANE_SEQ_CTL);
|
|
DUMP_REG(SOR_SEQ_INST(0));
|
|
DUMP_REG(SOR_SEQ_INST(1));
|
|
DUMP_REG(SOR_SEQ_INST(2));
|
|
DUMP_REG(SOR_SEQ_INST(3));
|
|
DUMP_REG(SOR_SEQ_INST(4));
|
|
DUMP_REG(SOR_SEQ_INST(5));
|
|
DUMP_REG(SOR_SEQ_INST(6));
|
|
DUMP_REG(SOR_SEQ_INST(7));
|
|
DUMP_REG(SOR_SEQ_INST(8));
|
|
DUMP_REG(SOR_SEQ_INST(9));
|
|
DUMP_REG(SOR_SEQ_INST(10));
|
|
DUMP_REG(SOR_SEQ_INST(11));
|
|
DUMP_REG(SOR_SEQ_INST(12));
|
|
DUMP_REG(SOR_SEQ_INST(13));
|
|
DUMP_REG(SOR_SEQ_INST(14));
|
|
DUMP_REG(SOR_SEQ_INST(15));
|
|
DUMP_REG(SOR_PWM_DIV);
|
|
DUMP_REG(SOR_PWM_CTL);
|
|
DUMP_REG(SOR_VCRC_A_0);
|
|
DUMP_REG(SOR_VCRC_A_1);
|
|
DUMP_REG(SOR_VCRC_B_0);
|
|
DUMP_REG(SOR_VCRC_B_1);
|
|
DUMP_REG(SOR_CCRC_A_0);
|
|
DUMP_REG(SOR_CCRC_A_1);
|
|
DUMP_REG(SOR_CCRC_B_0);
|
|
DUMP_REG(SOR_CCRC_B_1);
|
|
DUMP_REG(SOR_EDATA_A_0);
|
|
DUMP_REG(SOR_EDATA_A_1);
|
|
DUMP_REG(SOR_EDATA_B_0);
|
|
DUMP_REG(SOR_EDATA_B_1);
|
|
DUMP_REG(SOR_COUNT_A_0);
|
|
DUMP_REG(SOR_COUNT_A_1);
|
|
DUMP_REG(SOR_COUNT_B_0);
|
|
DUMP_REG(SOR_COUNT_B_1);
|
|
DUMP_REG(SOR_DEBUG_A_0);
|
|
DUMP_REG(SOR_DEBUG_A_1);
|
|
DUMP_REG(SOR_DEBUG_B_0);
|
|
DUMP_REG(SOR_DEBUG_B_1);
|
|
DUMP_REG(SOR_TRIG);
|
|
DUMP_REG(SOR_MSCHECK);
|
|
DUMP_REG(SOR_XBAR_CTRL);
|
|
DUMP_REG(SOR_XBAR_POL);
|
|
DUMP_REG(SOR_DP_LINKCTL_0);
|
|
DUMP_REG(SOR_DP_LINKCTL_1);
|
|
DUMP_REG(SOR_LANE_DRIVE_CURRENT_0);
|
|
DUMP_REG(SOR_LANE_DRIVE_CURRENT_1);
|
|
DUMP_REG(SOR_LANE4_DRIVE_CURRENT_0);
|
|
DUMP_REG(SOR_LANE4_DRIVE_CURRENT_1);
|
|
DUMP_REG(SOR_LANE_PREEMPHASIS_0);
|
|
DUMP_REG(SOR_LANE_PREEMPHASIS_1);
|
|
DUMP_REG(SOR_LANE4_PREEMPHASIS_0);
|
|
DUMP_REG(SOR_LANE4_PREEMPHASIS_1);
|
|
DUMP_REG(SOR_LANE_POST_CURSOR_0);
|
|
DUMP_REG(SOR_LANE_POST_CURSOR_1);
|
|
DUMP_REG(SOR_DP_CONFIG_0);
|
|
DUMP_REG(SOR_DP_CONFIG_1);
|
|
DUMP_REG(SOR_DP_MN_0);
|
|
DUMP_REG(SOR_DP_MN_1);
|
|
DUMP_REG(SOR_DP_PADCTL_0);
|
|
DUMP_REG(SOR_DP_PADCTL_1);
|
|
DUMP_REG(SOR_DP_DEBUG_0);
|
|
DUMP_REG(SOR_DP_DEBUG_1);
|
|
DUMP_REG(SOR_DP_SPARE_0);
|
|
DUMP_REG(SOR_DP_SPARE_1);
|
|
DUMP_REG(SOR_DP_AUDIO_CTRL);
|
|
DUMP_REG(SOR_DP_AUDIO_HBLANK_SYMBOLS);
|
|
DUMP_REG(SOR_DP_AUDIO_VBLANK_SYMBOLS);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_HEADER);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_0);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_1);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_2);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_3);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_4);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_5);
|
|
DUMP_REG(SOR_DP_GENERIC_INFOFRAME_SUBPACK_6);
|
|
DUMP_REG(SOR_DP_TPG);
|
|
DUMP_REG(SOR_DP_TPG_CONFIG);
|
|
DUMP_REG(SOR_DP_LQ_CSTM_0);
|
|
DUMP_REG(SOR_DP_LQ_CSTM_1);
|
|
DUMP_REG(SOR_DP_LQ_CSTM_2);
|
|
|
|
#undef DUMP_REG
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_info_list debugfs_files[] = {
|
|
{ "regs", tegra_sor_show_regs, 0, NULL },
|
|
};
|
|
|
|
static int tegra_sor_debugfs_init(struct tegra_sor *sor,
|
|
struct drm_minor *minor)
|
|
{
|
|
struct dentry *entry;
|
|
unsigned int i;
|
|
int err = 0;
|
|
|
|
sor->debugfs = debugfs_create_dir("sor", minor->debugfs_root);
|
|
if (!sor->debugfs)
|
|
return -ENOMEM;
|
|
|
|
sor->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
|
|
GFP_KERNEL);
|
|
if (!sor->debugfs_files) {
|
|
err = -ENOMEM;
|
|
goto remove;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
|
|
sor->debugfs_files[i].data = sor;
|
|
|
|
err = drm_debugfs_create_files(sor->debugfs_files,
|
|
ARRAY_SIZE(debugfs_files),
|
|
sor->debugfs, minor);
|
|
if (err < 0)
|
|
goto free;
|
|
|
|
entry = debugfs_create_file("crc", 0644, sor->debugfs, sor,
|
|
&tegra_sor_crc_fops);
|
|
if (!entry) {
|
|
err = -ENOMEM;
|
|
goto free;
|
|
}
|
|
|
|
return err;
|
|
|
|
free:
|
|
kfree(sor->debugfs_files);
|
|
sor->debugfs_files = NULL;
|
|
remove:
|
|
debugfs_remove_recursive(sor->debugfs);
|
|
sor->debugfs = NULL;
|
|
return err;
|
|
}
|
|
|
|
static void tegra_sor_debugfs_exit(struct tegra_sor *sor)
|
|
{
|
|
drm_debugfs_remove_files(sor->debugfs_files, ARRAY_SIZE(debugfs_files),
|
|
sor->minor);
|
|
sor->minor = NULL;
|
|
|
|
kfree(sor->debugfs_files);
|
|
sor->debugfs = NULL;
|
|
|
|
debugfs_remove_recursive(sor->debugfs);
|
|
sor->debugfs_files = NULL;
|
|
}
|
|
|
|
static int tegra_sor_connector_dpms(struct drm_connector *connector, int mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static enum drm_connector_status
|
|
tegra_sor_connector_detect(struct drm_connector *connector, bool force)
|
|
{
|
|
struct tegra_output *output = connector_to_output(connector);
|
|
struct tegra_sor *sor = to_sor(output);
|
|
|
|
if (sor->dpaux)
|
|
return tegra_dpaux_detect(sor->dpaux);
|
|
|
|
return connector_status_unknown;
|
|
}
|
|
|
|
static const struct drm_connector_funcs tegra_sor_connector_funcs = {
|
|
.dpms = tegra_sor_connector_dpms,
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.detect = tegra_sor_connector_detect,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = tegra_output_connector_destroy,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
static int tegra_sor_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct tegra_output *output = connector_to_output(connector);
|
|
struct tegra_sor *sor = to_sor(output);
|
|
int err;
|
|
|
|
if (sor->dpaux)
|
|
tegra_dpaux_enable(sor->dpaux);
|
|
|
|
err = tegra_output_connector_get_modes(connector);
|
|
|
|
if (sor->dpaux)
|
|
tegra_dpaux_disable(sor->dpaux);
|
|
|
|
return err;
|
|
}
|
|
|
|
static enum drm_mode_status
|
|
tegra_sor_connector_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return MODE_OK;
|
|
}
|
|
|
|
static const struct drm_connector_helper_funcs tegra_sor_connector_helper_funcs = {
|
|
.get_modes = tegra_sor_connector_get_modes,
|
|
.mode_valid = tegra_sor_connector_mode_valid,
|
|
.best_encoder = tegra_output_connector_best_encoder,
|
|
};
|
|
|
|
static const struct drm_encoder_funcs tegra_sor_encoder_funcs = {
|
|
.destroy = tegra_output_encoder_destroy,
|
|
};
|
|
|
|
static void tegra_sor_encoder_dpms(struct drm_encoder *encoder, int mode)
|
|
{
|
|
}
|
|
|
|
static void tegra_sor_encoder_prepare(struct drm_encoder *encoder)
|
|
{
|
|
}
|
|
|
|
static void tegra_sor_encoder_commit(struct drm_encoder *encoder)
|
|
{
|
|
}
|
|
|
|
static void tegra_sor_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted)
|
|
{
|
|
struct tegra_output *output = encoder_to_output(encoder);
|
|
struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
|
|
unsigned int vbe, vse, hbe, hse, vbs, hbs, i;
|
|
struct tegra_sor *sor = to_sor(output);
|
|
struct tegra_sor_config config;
|
|
struct drm_dp_link link;
|
|
struct drm_dp_aux *aux;
|
|
int err = 0;
|
|
u32 value;
|
|
|
|
mutex_lock(&sor->lock);
|
|
|
|
if (sor->enabled)
|
|
goto unlock;
|
|
|
|
err = clk_prepare_enable(sor->clk);
|
|
if (err < 0)
|
|
goto unlock;
|
|
|
|
reset_control_deassert(sor->rst);
|
|
|
|
if (output->panel)
|
|
drm_panel_prepare(output->panel);
|
|
|
|
/* FIXME: properly convert to struct drm_dp_aux */
|
|
aux = (struct drm_dp_aux *)sor->dpaux;
|
|
|
|
if (sor->dpaux) {
|
|
err = tegra_dpaux_enable(sor->dpaux);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "failed to enable DP: %d\n", err);
|
|
|
|
err = drm_dp_link_probe(aux, &link);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to probe eDP link: %d\n",
|
|
err);
|
|
goto unlock;
|
|
}
|
|
}
|
|
|
|
err = clk_set_parent(sor->clk, sor->clk_safe);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "failed to set safe parent clock: %d\n", err);
|
|
|
|
memset(&config, 0, sizeof(config));
|
|
config.bits_per_pixel = output->connector.display_info.bpc * 3;
|
|
|
|
err = tegra_sor_calc_config(sor, mode, &config, &link);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "failed to compute link configuration: %d\n",
|
|
err);
|
|
|
|
value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
|
|
value &= ~SOR_CLK_CNTRL_DP_CLK_SEL_MASK;
|
|
value |= SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK;
|
|
tegra_sor_writel(sor, value, SOR_CLK_CNTRL);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value &= ~SOR_PLL_2_BANDGAP_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
usleep_range(20, 100);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_3);
|
|
value |= SOR_PLL_3_PLL_VDD_MODE_V3_3;
|
|
tegra_sor_writel(sor, value, SOR_PLL_3);
|
|
|
|
value = SOR_PLL_0_ICHPMP(0xf) | SOR_PLL_0_VCOCAP_RST |
|
|
SOR_PLL_0_PLLREG_LEVEL_V45 | SOR_PLL_0_RESISTOR_EXT;
|
|
tegra_sor_writel(sor, value, SOR_PLL_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value |= SOR_PLL_2_SEQ_PLLCAPPD;
|
|
value &= ~SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE;
|
|
value |= SOR_PLL_2_LVDS_ENABLE;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
value = SOR_PLL_1_TERM_COMPOUT | SOR_PLL_1_TMDS_TERM;
|
|
tegra_sor_writel(sor, value, SOR_PLL_1);
|
|
|
|
while (true) {
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
if ((value & SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE) == 0)
|
|
break;
|
|
|
|
usleep_range(250, 1000);
|
|
}
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value &= ~SOR_PLL_2_POWERDOWN_OVERRIDE;
|
|
value &= ~SOR_PLL_2_PORT_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
/*
|
|
* power up
|
|
*/
|
|
|
|
/* set safe link bandwidth (1.62 Gbps) */
|
|
value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
|
|
value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK;
|
|
value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G1_62;
|
|
tegra_sor_writel(sor, value, SOR_CLK_CNTRL);
|
|
|
|
/* step 1 */
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value |= SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE | SOR_PLL_2_PORT_POWERDOWN |
|
|
SOR_PLL_2_BANDGAP_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_0);
|
|
value |= SOR_PLL_0_VCOPD | SOR_PLL_0_POWER_OFF;
|
|
tegra_sor_writel(sor, value, SOR_PLL_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
|
|
value &= ~SOR_DP_PADCTL_PAD_CAL_PD;
|
|
tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
|
|
|
|
/* step 2 */
|
|
err = tegra_io_rail_power_on(TEGRA_IO_RAIL_LVDS);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to power on I/O rail: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
usleep_range(5, 100);
|
|
|
|
/* step 3 */
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value &= ~SOR_PLL_2_BANDGAP_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
usleep_range(20, 100);
|
|
|
|
/* step 4 */
|
|
value = tegra_sor_readl(sor, SOR_PLL_0);
|
|
value &= ~SOR_PLL_0_POWER_OFF;
|
|
value &= ~SOR_PLL_0_VCOPD;
|
|
tegra_sor_writel(sor, value, SOR_PLL_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value &= ~SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
usleep_range(200, 1000);
|
|
|
|
/* step 5 */
|
|
value = tegra_sor_readl(sor, SOR_PLL_2);
|
|
value &= ~SOR_PLL_2_PORT_POWERDOWN;
|
|
tegra_sor_writel(sor, value, SOR_PLL_2);
|
|
|
|
/* switch to DP clock */
|
|
err = clk_set_parent(sor->clk, sor->clk_dp);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "failed to set DP parent clock: %d\n", err);
|
|
|
|
/* power DP lanes */
|
|
value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
|
|
|
|
if (link.num_lanes <= 2)
|
|
value &= ~(SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_2);
|
|
else
|
|
value |= SOR_DP_PADCTL_PD_TXD_3 | SOR_DP_PADCTL_PD_TXD_2;
|
|
|
|
if (link.num_lanes <= 1)
|
|
value &= ~SOR_DP_PADCTL_PD_TXD_1;
|
|
else
|
|
value |= SOR_DP_PADCTL_PD_TXD_1;
|
|
|
|
if (link.num_lanes == 0)
|
|
value &= ~SOR_DP_PADCTL_PD_TXD_0;
|
|
else
|
|
value |= SOR_DP_PADCTL_PD_TXD_0;
|
|
|
|
tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_LINKCTL_0);
|
|
value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK;
|
|
value |= SOR_DP_LINKCTL_LANE_COUNT(link.num_lanes);
|
|
tegra_sor_writel(sor, value, SOR_DP_LINKCTL_0);
|
|
|
|
/* start lane sequencer */
|
|
value = SOR_LANE_SEQ_CTL_TRIGGER | SOR_LANE_SEQ_CTL_SEQUENCE_DOWN |
|
|
SOR_LANE_SEQ_CTL_POWER_STATE_UP;
|
|
tegra_sor_writel(sor, value, SOR_LANE_SEQ_CTL);
|
|
|
|
while (true) {
|
|
value = tegra_sor_readl(sor, SOR_LANE_SEQ_CTL);
|
|
if ((value & SOR_LANE_SEQ_CTL_TRIGGER) == 0)
|
|
break;
|
|
|
|
usleep_range(250, 1000);
|
|
}
|
|
|
|
/* set link bandwidth */
|
|
value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
|
|
value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK;
|
|
value |= drm_dp_link_rate_to_bw_code(link.rate) << 2;
|
|
tegra_sor_writel(sor, value, SOR_CLK_CNTRL);
|
|
|
|
/* set linkctl */
|
|
value = tegra_sor_readl(sor, SOR_DP_LINKCTL_0);
|
|
value |= SOR_DP_LINKCTL_ENABLE;
|
|
|
|
value &= ~SOR_DP_LINKCTL_TU_SIZE_MASK;
|
|
value |= SOR_DP_LINKCTL_TU_SIZE(config.tu_size);
|
|
|
|
value |= SOR_DP_LINKCTL_ENHANCED_FRAME;
|
|
tegra_sor_writel(sor, value, SOR_DP_LINKCTL_0);
|
|
|
|
for (i = 0, value = 0; i < 4; i++) {
|
|
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
|
|
SOR_DP_TPG_SCRAMBLER_GALIOS |
|
|
SOR_DP_TPG_PATTERN_NONE;
|
|
value = (value << 8) | lane;
|
|
}
|
|
|
|
tegra_sor_writel(sor, value, SOR_DP_TPG);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_CONFIG_0);
|
|
value &= ~SOR_DP_CONFIG_WATERMARK_MASK;
|
|
value |= SOR_DP_CONFIG_WATERMARK(config.watermark);
|
|
|
|
value &= ~SOR_DP_CONFIG_ACTIVE_SYM_COUNT_MASK;
|
|
value |= SOR_DP_CONFIG_ACTIVE_SYM_COUNT(config.active_count);
|
|
|
|
value &= ~SOR_DP_CONFIG_ACTIVE_SYM_FRAC_MASK;
|
|
value |= SOR_DP_CONFIG_ACTIVE_SYM_FRAC(config.active_frac);
|
|
|
|
if (config.active_polarity)
|
|
value |= SOR_DP_CONFIG_ACTIVE_SYM_POLARITY;
|
|
else
|
|
value &= ~SOR_DP_CONFIG_ACTIVE_SYM_POLARITY;
|
|
|
|
value |= SOR_DP_CONFIG_ACTIVE_SYM_ENABLE;
|
|
value |= SOR_DP_CONFIG_DISPARITY_NEGATIVE;
|
|
tegra_sor_writel(sor, value, SOR_DP_CONFIG_0);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_AUDIO_HBLANK_SYMBOLS);
|
|
value &= ~SOR_DP_AUDIO_HBLANK_SYMBOLS_MASK;
|
|
value |= config.hblank_symbols & 0xffff;
|
|
tegra_sor_writel(sor, value, SOR_DP_AUDIO_HBLANK_SYMBOLS);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_AUDIO_VBLANK_SYMBOLS);
|
|
value &= ~SOR_DP_AUDIO_VBLANK_SYMBOLS_MASK;
|
|
value |= config.vblank_symbols & 0xffff;
|
|
tegra_sor_writel(sor, value, SOR_DP_AUDIO_VBLANK_SYMBOLS);
|
|
|
|
/* enable pad calibration logic */
|
|
value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
|
|
value |= SOR_DP_PADCTL_PAD_CAL_PD;
|
|
tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
|
|
|
|
if (sor->dpaux) {
|
|
u8 rate, lanes;
|
|
|
|
err = drm_dp_link_probe(aux, &link);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to probe eDP link: %d\n",
|
|
err);
|
|
goto unlock;
|
|
}
|
|
|
|
err = drm_dp_link_power_up(aux, &link);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to power up eDP link: %d\n",
|
|
err);
|
|
goto unlock;
|
|
}
|
|
|
|
err = drm_dp_link_configure(aux, &link);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to configure eDP link: %d\n",
|
|
err);
|
|
goto unlock;
|
|
}
|
|
|
|
rate = drm_dp_link_rate_to_bw_code(link.rate);
|
|
lanes = link.num_lanes;
|
|
|
|
value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
|
|
value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK;
|
|
value |= SOR_CLK_CNTRL_DP_LINK_SPEED(rate);
|
|
tegra_sor_writel(sor, value, SOR_CLK_CNTRL);
|
|
|
|
value = tegra_sor_readl(sor, SOR_DP_LINKCTL_0);
|
|
value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK;
|
|
value |= SOR_DP_LINKCTL_LANE_COUNT(lanes);
|
|
|
|
if (link.capabilities & DP_LINK_CAP_ENHANCED_FRAMING)
|
|
value |= SOR_DP_LINKCTL_ENHANCED_FRAME;
|
|
|
|
tegra_sor_writel(sor, value, SOR_DP_LINKCTL_0);
|
|
|
|
/* disable training pattern generator */
|
|
|
|
for (i = 0; i < link.num_lanes; i++) {
|
|
unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
|
|
SOR_DP_TPG_SCRAMBLER_GALIOS |
|
|
SOR_DP_TPG_PATTERN_NONE;
|
|
value = (value << 8) | lane;
|
|
}
|
|
|
|
tegra_sor_writel(sor, value, SOR_DP_TPG);
|
|
|
|
err = tegra_sor_dp_train_fast(sor, &link);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "DP fast link training failed: %d\n",
|
|
err);
|
|
goto unlock;
|
|
}
|
|
|
|
dev_dbg(sor->dev, "fast link training succeeded\n");
|
|
}
|
|
|
|
err = tegra_sor_power_up(sor, 250);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to power up SOR: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
/*
|
|
* configure panel (24bpp, vsync-, hsync-, DP-A protocol, complete
|
|
* raster, associate with display controller)
|
|
*/
|
|
value = SOR_STATE_ASY_PROTOCOL_DP_A |
|
|
SOR_STATE_ASY_CRC_MODE_COMPLETE |
|
|
SOR_STATE_ASY_OWNER(dc->pipe + 1);
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_PHSYNC)
|
|
value &= ~SOR_STATE_ASY_HSYNCPOL;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
|
|
value |= SOR_STATE_ASY_HSYNCPOL;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_PVSYNC)
|
|
value &= ~SOR_STATE_ASY_VSYNCPOL;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_NVSYNC)
|
|
value |= SOR_STATE_ASY_VSYNCPOL;
|
|
|
|
switch (config.bits_per_pixel) {
|
|
case 24:
|
|
value |= SOR_STATE_ASY_PIXELDEPTH_BPP_24_444;
|
|
break;
|
|
|
|
case 18:
|
|
value |= SOR_STATE_ASY_PIXELDEPTH_BPP_18_444;
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
tegra_sor_writel(sor, value, SOR_STATE_1);
|
|
|
|
/*
|
|
* TODO: The video timing programming below doesn't seem to match the
|
|
* register definitions.
|
|
*/
|
|
|
|
value = ((mode->vtotal & 0x7fff) << 16) | (mode->htotal & 0x7fff);
|
|
tegra_sor_writel(sor, value, SOR_HEAD_STATE_1(0));
|
|
|
|
vse = mode->vsync_end - mode->vsync_start - 1;
|
|
hse = mode->hsync_end - mode->hsync_start - 1;
|
|
|
|
value = ((vse & 0x7fff) << 16) | (hse & 0x7fff);
|
|
tegra_sor_writel(sor, value, SOR_HEAD_STATE_2(0));
|
|
|
|
vbe = vse + (mode->vsync_start - mode->vdisplay);
|
|
hbe = hse + (mode->hsync_start - mode->hdisplay);
|
|
|
|
value = ((vbe & 0x7fff) << 16) | (hbe & 0x7fff);
|
|
tegra_sor_writel(sor, value, SOR_HEAD_STATE_3(0));
|
|
|
|
vbs = vbe + mode->vdisplay;
|
|
hbs = hbe + mode->hdisplay;
|
|
|
|
value = ((vbs & 0x7fff) << 16) | (hbs & 0x7fff);
|
|
tegra_sor_writel(sor, value, SOR_HEAD_STATE_4(0));
|
|
|
|
/* CSTM (LVDS, link A/B, upper) */
|
|
value = SOR_CSTM_LVDS | SOR_CSTM_LINK_ACT_A | SOR_CSTM_LINK_ACT_B |
|
|
SOR_CSTM_UPPER;
|
|
tegra_sor_writel(sor, value, SOR_CSTM);
|
|
|
|
/* PWM setup */
|
|
err = tegra_sor_setup_pwm(sor, 250);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to setup PWM: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
tegra_sor_update(sor);
|
|
|
|
value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
|
|
value |= SOR_ENABLE;
|
|
tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
|
|
|
|
tegra_dc_commit(dc);
|
|
|
|
err = tegra_sor_attach(sor);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to attach SOR: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
err = tegra_sor_wakeup(sor);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to enable DC: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
if (output->panel)
|
|
drm_panel_enable(output->panel);
|
|
|
|
sor->enabled = true;
|
|
|
|
unlock:
|
|
mutex_unlock(&sor->lock);
|
|
}
|
|
|
|
static void tegra_sor_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
struct tegra_output *output = encoder_to_output(encoder);
|
|
struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
|
|
struct tegra_sor *sor = to_sor(output);
|
|
u32 value;
|
|
int err;
|
|
|
|
mutex_lock(&sor->lock);
|
|
|
|
if (!sor->enabled)
|
|
goto unlock;
|
|
|
|
if (output->panel)
|
|
drm_panel_disable(output->panel);
|
|
|
|
err = tegra_sor_detach(sor);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to detach SOR: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
tegra_sor_writel(sor, 0, SOR_STATE_1);
|
|
tegra_sor_update(sor);
|
|
|
|
/*
|
|
* The following accesses registers of the display controller, so make
|
|
* sure it's only executed when the output is attached to one.
|
|
*/
|
|
if (dc) {
|
|
value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
|
|
value &= ~SOR_ENABLE;
|
|
tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
|
|
|
|
tegra_dc_commit(dc);
|
|
}
|
|
|
|
err = tegra_sor_power_down(sor);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to power down SOR: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
if (sor->dpaux) {
|
|
err = tegra_dpaux_disable(sor->dpaux);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to disable DP: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
}
|
|
|
|
err = tegra_io_rail_power_off(TEGRA_IO_RAIL_LVDS);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to power off I/O rail: %d\n", err);
|
|
goto unlock;
|
|
}
|
|
|
|
if (output->panel)
|
|
drm_panel_unprepare(output->panel);
|
|
|
|
clk_disable_unprepare(sor->clk);
|
|
reset_control_assert(sor->rst);
|
|
|
|
sor->enabled = false;
|
|
|
|
unlock:
|
|
mutex_unlock(&sor->lock);
|
|
}
|
|
|
|
static int
|
|
tegra_sor_encoder_atomic_check(struct drm_encoder *encoder,
|
|
struct drm_crtc_state *crtc_state,
|
|
struct drm_connector_state *conn_state)
|
|
{
|
|
struct tegra_output *output = encoder_to_output(encoder);
|
|
struct tegra_dc *dc = to_tegra_dc(conn_state->crtc);
|
|
unsigned long pclk = crtc_state->mode.clock * 1000;
|
|
struct tegra_sor *sor = to_sor(output);
|
|
int err;
|
|
|
|
err = tegra_dc_state_setup_clock(dc, crtc_state, sor->clk_parent,
|
|
pclk, 0);
|
|
if (err < 0) {
|
|
dev_err(output->dev, "failed to setup CRTC state: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_encoder_helper_funcs tegra_sor_encoder_helper_funcs = {
|
|
.dpms = tegra_sor_encoder_dpms,
|
|
.prepare = tegra_sor_encoder_prepare,
|
|
.commit = tegra_sor_encoder_commit,
|
|
.mode_set = tegra_sor_encoder_mode_set,
|
|
.disable = tegra_sor_encoder_disable,
|
|
.atomic_check = tegra_sor_encoder_atomic_check,
|
|
};
|
|
|
|
static int tegra_sor_init(struct host1x_client *client)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(client->parent);
|
|
struct tegra_sor *sor = host1x_client_to_sor(client);
|
|
int err;
|
|
|
|
if (!sor->dpaux)
|
|
return -ENODEV;
|
|
|
|
sor->output.dev = sor->dev;
|
|
|
|
drm_connector_init(drm, &sor->output.connector,
|
|
&tegra_sor_connector_funcs,
|
|
DRM_MODE_CONNECTOR_eDP);
|
|
drm_connector_helper_add(&sor->output.connector,
|
|
&tegra_sor_connector_helper_funcs);
|
|
sor->output.connector.dpms = DRM_MODE_DPMS_OFF;
|
|
|
|
drm_encoder_init(drm, &sor->output.encoder, &tegra_sor_encoder_funcs,
|
|
DRM_MODE_ENCODER_TMDS);
|
|
drm_encoder_helper_add(&sor->output.encoder,
|
|
&tegra_sor_encoder_helper_funcs);
|
|
|
|
drm_mode_connector_attach_encoder(&sor->output.connector,
|
|
&sor->output.encoder);
|
|
drm_connector_register(&sor->output.connector);
|
|
|
|
err = tegra_output_init(drm, &sor->output);
|
|
if (err < 0) {
|
|
dev_err(client->dev, "failed to initialize output: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
sor->output.encoder.possible_crtcs = 0x3;
|
|
|
|
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
|
|
err = tegra_sor_debugfs_init(sor, drm->primary);
|
|
if (err < 0)
|
|
dev_err(sor->dev, "debugfs setup failed: %d\n", err);
|
|
}
|
|
|
|
if (sor->dpaux) {
|
|
err = tegra_dpaux_attach(sor->dpaux, &sor->output);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to attach DP: %d\n", err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* XXX: Remove this reset once proper hand-over from firmware to
|
|
* kernel is possible.
|
|
*/
|
|
err = reset_control_assert(sor->rst);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to assert SOR reset: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = clk_prepare_enable(sor->clk);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to enable clock: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
usleep_range(1000, 3000);
|
|
|
|
err = reset_control_deassert(sor->rst);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to deassert SOR reset: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = clk_prepare_enable(sor->clk_safe);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = clk_prepare_enable(sor->clk_dp);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_exit(struct host1x_client *client)
|
|
{
|
|
struct tegra_sor *sor = host1x_client_to_sor(client);
|
|
int err;
|
|
|
|
tegra_output_exit(&sor->output);
|
|
|
|
if (sor->dpaux) {
|
|
err = tegra_dpaux_detach(sor->dpaux);
|
|
if (err < 0) {
|
|
dev_err(sor->dev, "failed to detach DP: %d\n", err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
clk_disable_unprepare(sor->clk_safe);
|
|
clk_disable_unprepare(sor->clk_dp);
|
|
clk_disable_unprepare(sor->clk);
|
|
|
|
if (IS_ENABLED(CONFIG_DEBUG_FS))
|
|
tegra_sor_debugfs_exit(sor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct host1x_client_ops sor_client_ops = {
|
|
.init = tegra_sor_init,
|
|
.exit = tegra_sor_exit,
|
|
};
|
|
|
|
static int tegra_sor_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np;
|
|
struct tegra_sor *sor;
|
|
struct resource *regs;
|
|
int err;
|
|
|
|
sor = devm_kzalloc(&pdev->dev, sizeof(*sor), GFP_KERNEL);
|
|
if (!sor)
|
|
return -ENOMEM;
|
|
|
|
sor->output.dev = sor->dev = &pdev->dev;
|
|
|
|
np = of_parse_phandle(pdev->dev.of_node, "nvidia,dpaux", 0);
|
|
if (np) {
|
|
sor->dpaux = tegra_dpaux_find_by_of_node(np);
|
|
of_node_put(np);
|
|
|
|
if (!sor->dpaux)
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
err = tegra_output_probe(&sor->output);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
sor->regs = devm_ioremap_resource(&pdev->dev, regs);
|
|
if (IS_ERR(sor->regs))
|
|
return PTR_ERR(sor->regs);
|
|
|
|
sor->rst = devm_reset_control_get(&pdev->dev, "sor");
|
|
if (IS_ERR(sor->rst))
|
|
return PTR_ERR(sor->rst);
|
|
|
|
sor->clk = devm_clk_get(&pdev->dev, NULL);
|
|
if (IS_ERR(sor->clk))
|
|
return PTR_ERR(sor->clk);
|
|
|
|
sor->clk_parent = devm_clk_get(&pdev->dev, "parent");
|
|
if (IS_ERR(sor->clk_parent))
|
|
return PTR_ERR(sor->clk_parent);
|
|
|
|
sor->clk_safe = devm_clk_get(&pdev->dev, "safe");
|
|
if (IS_ERR(sor->clk_safe))
|
|
return PTR_ERR(sor->clk_safe);
|
|
|
|
sor->clk_dp = devm_clk_get(&pdev->dev, "dp");
|
|
if (IS_ERR(sor->clk_dp))
|
|
return PTR_ERR(sor->clk_dp);
|
|
|
|
INIT_LIST_HEAD(&sor->client.list);
|
|
sor->client.ops = &sor_client_ops;
|
|
sor->client.dev = &pdev->dev;
|
|
|
|
mutex_init(&sor->lock);
|
|
|
|
err = host1x_client_register(&sor->client);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to register host1x client: %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, sor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_sor_remove(struct platform_device *pdev)
|
|
{
|
|
struct tegra_sor *sor = platform_get_drvdata(pdev);
|
|
int err;
|
|
|
|
err = host1x_client_unregister(&sor->client);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
tegra_output_remove(&sor->output);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id tegra_sor_of_match[] = {
|
|
{ .compatible = "nvidia,tegra124-sor", },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra_sor_of_match);
|
|
|
|
struct platform_driver tegra_sor_driver = {
|
|
.driver = {
|
|
.name = "tegra-sor",
|
|
.of_match_table = tegra_sor_of_match,
|
|
},
|
|
.probe = tegra_sor_probe,
|
|
.remove = tegra_sor_remove,
|
|
};
|