[Intel-gfx] [PATCH v5 5/5] drm/tegra: Add eDP support
Thierry Reding
thierry.reding at gmail.com
Thu Feb 20 16:55:34 CET 2014
From: Thierry Reding <treding at nvidia.com>
Add support for eDP functionality found on Tegra124 and later SoCs. Only
fast link training is currently supported.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
Changes in v5:
- relicense under GPL v2 like the rest of the driver
.../bindings/gpu/nvidia,tegra20-host1x.txt | 42 +
drivers/gpu/drm/tegra/Makefile | 2 +
drivers/gpu/drm/tegra/dc.h | 1 +
drivers/gpu/drm/tegra/dpaux.c | 544 ++++++++++
drivers/gpu/drm/tegra/dpaux.h | 73 ++
drivers/gpu/drm/tegra/drm.c | 19 +-
drivers/gpu/drm/tegra/drm.h | 20 +
drivers/gpu/drm/tegra/output.c | 8 +
drivers/gpu/drm/tegra/sor.c | 1092 ++++++++++++++++++++
drivers/gpu/drm/tegra/sor.h | 278 +++++
10 files changed, 2077 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/tegra/dpaux.c
create mode 100644 drivers/gpu/drm/tegra/dpaux.h
create mode 100644 drivers/gpu/drm/tegra/sor.c
create mode 100644 drivers/gpu/drm/tegra/sor.h
diff --git a/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
index efaeec8961b6..efa8b8451f93 100644
--- a/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
+++ b/Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
@@ -190,6 +190,48 @@ of the following host1x client modules:
- nvidia,edid: supplies a binary EDID blob
- nvidia,panel: phandle of a display panel
+- sor: serial output resource
+
+ Required properties:
+ - compatible: "nvidia,tegra124-sor"
+ - reg: Physical base address and length of the controller's registers.
+ - interrupts: The interrupt outputs from the controller.
+ - clocks: Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+ - clock-names: Must include the following entries:
+ - sor: clock input for the SOR hardware
+ - parent: input for the pixel clock
+ - dp: reference clock for the SOR clock
+ - safe: safe reference for the SOR clock during power up
+ - resets: Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+ - reset-names: Must include the following entries:
+ - sor
+
+ Optional properties:
+ - nvidia,ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
+ - nvidia,hpd-gpio: specifies a GPIO used for hotplug detection
+ - nvidia,edid: supplies a binary EDID blob
+ - nvidia,panel: phandle of a display panel
+
+ Optional properties when driving an eDP output:
+ - nvidia,dpaux: phandle to a DispayPort AUX interface
+
+- dpaux: DisplayPort AUX interface
+ - compatible: "nvidia,tegra124-dpaux"
+ - reg: Physical base address and length of the controller's registers.
+ - interrupts: The interrupt outputs from the controller.
+ - clocks: Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+ - clock-names: Must include the following entries:
+ - dpaux: clock input for the DPAUX hardware
+ - parent: reference clock
+ - resets: Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+ - reset-names: Must include the following entries:
+ - dpaux
+ - vdd-supply: phandle of a supply that powers the DisplayPort link
+
Example:
/ {
diff --git a/drivers/gpu/drm/tegra/Makefile b/drivers/gpu/drm/tegra/Makefile
index 8d220afbd85f..d43f21bb4596 100644
--- a/drivers/gpu/drm/tegra/Makefile
+++ b/drivers/gpu/drm/tegra/Makefile
@@ -11,6 +11,8 @@ tegra-drm-y := \
hdmi.o \
mipi-phy.o \
dsi.o \
+ sor.o \
+ dpaux.o \
gr2d.o \
gr3d.o
diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index 3c2c0ea1cd87..c94101494826 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -118,6 +118,7 @@
#define DC_DISP_DISP_WIN_OPTIONS 0x402
#define HDMI_ENABLE (1 << 30)
#define DSI_ENABLE (1 << 29)
+#define SOR_ENABLE (1 << 25)
#define DC_DISP_DISP_MEM_HIGH_PRIORITY 0x403
#define CURSOR_THRESHOLD(x) (((x) & 0x03) << 24)
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
new file mode 100644
index 000000000000..d536ed381fbd
--- /dev/null
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -0,0 +1,544 @@
+/*
+ * Copyright (C) 2013 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_panel.h>
+
+#include "dpaux.h"
+#include "drm.h"
+
+static DEFINE_MUTEX(dpaux_lock);
+static LIST_HEAD(dpaux_list);
+
+struct tegra_dpaux {
+ struct drm_dp_aux aux;
+ struct device *dev;
+
+ void __iomem *regs;
+ int irq;
+
+ struct tegra_output *output;
+
+ struct reset_control *rst;
+ struct clk *clk_parent;
+ struct clk *clk;
+
+ struct regulator *vdd;
+
+ struct completion complete;
+ struct list_head list;
+};
+
+static inline struct tegra_dpaux *to_dpaux(struct drm_dp_aux *aux)
+{
+ return container_of(aux, struct tegra_dpaux, aux);
+}
+
+static inline unsigned long tegra_dpaux_readl(struct tegra_dpaux *dpaux,
+ unsigned long offset)
+{
+ return readl(dpaux->regs + (offset << 2));
+}
+
+static inline void tegra_dpaux_writel(struct tegra_dpaux *dpaux,
+ unsigned long value,
+ unsigned long offset)
+{
+ writel(value, dpaux->regs + (offset << 2));
+}
+
+static void tegra_dpaux_write_fifo(struct tegra_dpaux *dpaux, const u8 *buffer,
+ size_t size)
+{
+ unsigned long offset = DPAUX_DP_AUXDATA_WRITE(0);
+ size_t i, j;
+
+ for (i = 0; i < size; i += 4) {
+ size_t num = min_t(size_t, size - i, 4);
+ unsigned long value = 0;
+
+ for (j = 0; j < num; j++)
+ value |= buffer[i + j] << (j * 8);
+
+ tegra_dpaux_writel(dpaux, value, offset++);
+ }
+}
+
+static void tegra_dpaux_read_fifo(struct tegra_dpaux *dpaux, u8 *buffer,
+ size_t size)
+{
+ unsigned long offset = DPAUX_DP_AUXDATA_READ(0);
+ size_t i, j;
+
+ for (i = 0; i < size; i += 4) {
+ size_t num = min_t(size_t, size - i, 4);
+ unsigned long value;
+
+ value = tegra_dpaux_readl(dpaux, offset++);
+
+ for (j = 0; j < num; j++)
+ buffer[i + j] = value >> (j * 8);
+ }
+}
+
+static ssize_t tegra_dpaux_transfer(struct drm_dp_aux *aux,
+ struct drm_dp_aux_msg *msg)
+{
+ unsigned long value = DPAUX_DP_AUXCTL_TRANSACTREQ;
+ unsigned long timeout = msecs_to_jiffies(250);
+ struct tegra_dpaux *dpaux = to_dpaux(aux);
+ unsigned long status;
+ ssize_t ret = 0;
+
+ if (msg->size < 1 || msg->size > 16)
+ return -EINVAL;
+
+ tegra_dpaux_writel(dpaux, msg->address, DPAUX_DP_AUXADDR);
+
+ switch (msg->request & ~DP_AUX_I2C_MOT) {
+ case DP_AUX_I2C_WRITE:
+ if (msg->request & DP_AUX_I2C_MOT)
+ value = DPAUX_DP_AUXCTL_CMD_MOT_WR;
+ else
+ value = DPAUX_DP_AUXCTL_CMD_I2C_WR;
+
+ break;
+
+ case DP_AUX_I2C_READ:
+ if (msg->request & DP_AUX_I2C_MOT)
+ value = DPAUX_DP_AUXCTL_CMD_MOT_RD;
+ else
+ value = DPAUX_DP_AUXCTL_CMD_I2C_RD;
+
+ break;
+
+ case DP_AUX_I2C_STATUS:
+ if (msg->request & DP_AUX_I2C_MOT)
+ value = DPAUX_DP_AUXCTL_CMD_MOT_RQ;
+ else
+ value = DPAUX_DP_AUXCTL_CMD_I2C_RQ;
+
+ break;
+
+ case DP_AUX_NATIVE_WRITE:
+ value = DPAUX_DP_AUXCTL_CMD_AUX_WR;
+ break;
+
+ case DP_AUX_NATIVE_READ:
+ value = DPAUX_DP_AUXCTL_CMD_AUX_RD;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ value |= DPAUX_DP_AUXCTL_CMDLEN(msg->size - 1);
+ tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXCTL);
+
+ if ((msg->request & DP_AUX_I2C_READ) == 0) {
+ tegra_dpaux_write_fifo(dpaux, msg->buffer, msg->size);
+ ret = msg->size;
+ }
+
+ /* start transaction */
+ value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXCTL);
+ value |= DPAUX_DP_AUXCTL_TRANSACTREQ;
+ tegra_dpaux_writel(dpaux, value, DPAUX_DP_AUXCTL);
+
+ status = wait_for_completion_timeout(&dpaux->complete, timeout);
+ if (!status)
+ return -ETIMEDOUT;
+
+ /* read status and clear errors */
+ value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXSTAT);
+ tegra_dpaux_writel(dpaux, 0xf00, DPAUX_DP_AUXSTAT);
+
+ if (value & DPAUX_DP_AUXSTAT_TIMEOUT_ERROR)
+ return -ETIMEDOUT;
+
+ if ((value & DPAUX_DP_AUXSTAT_RX_ERROR) ||
+ (value & DPAUX_DP_AUXSTAT_SINKSTAT_ERROR) ||
+ (value & DPAUX_DP_AUXSTAT_NO_STOP_ERROR))
+ return -EIO;
+
+ switch ((value & DPAUX_DP_AUXSTAT_REPLY_TYPE_MASK) >> 16) {
+ case 0x00:
+ msg->reply = DP_AUX_NATIVE_REPLY_ACK;
+ break;
+
+ case 0x01:
+ msg->reply = DP_AUX_NATIVE_REPLY_NACK;
+ break;
+
+ case 0x02:
+ msg->reply = DP_AUX_NATIVE_REPLY_DEFER;
+ break;
+
+ case 0x04:
+ msg->reply = DP_AUX_I2C_REPLY_NACK;
+ break;
+
+ case 0x08:
+ msg->reply = DP_AUX_I2C_REPLY_DEFER;
+ break;
+ }
+
+ if (msg->reply == DP_AUX_NATIVE_REPLY_ACK) {
+ if (msg->request & DP_AUX_I2C_READ) {
+ size_t count = value & DPAUX_DP_AUXSTAT_REPLY_MASK;
+
+ if (WARN_ON(count != msg->size))
+ count = min_t(size_t, count, msg->size);
+
+ tegra_dpaux_read_fifo(dpaux, msg->buffer, count);
+ ret = count;
+ }
+ }
+
+ return ret;
+}
+
+static irqreturn_t tegra_dpaux_irq(int irq, void *data)
+{
+ struct tegra_dpaux *dpaux = data;
+ irqreturn_t ret = IRQ_HANDLED;
+ unsigned long value;
+
+ /* clear interrupts */
+ value = tegra_dpaux_readl(dpaux, DPAUX_INTR_AUX);
+ tegra_dpaux_writel(dpaux, value, DPAUX_INTR_AUX);
+
+ if (value & DPAUX_INTR_PLUG_EVENT) {
+ if (dpaux->output) {
+ drm_helper_hpd_irq_event(dpaux->output->connector.dev);
+ }
+ }
+
+ if (value & DPAUX_INTR_UNPLUG_EVENT) {
+ if (dpaux->output)
+ drm_helper_hpd_irq_event(dpaux->output->connector.dev);
+ }
+
+ if (value & DPAUX_INTR_IRQ_EVENT) {
+ /* TODO: handle this */
+ }
+
+ if (value & DPAUX_INTR_AUX_DONE)
+ complete(&dpaux->complete);
+
+ return ret;
+}
+
+static int tegra_dpaux_probe(struct platform_device *pdev)
+{
+ struct tegra_dpaux *dpaux;
+ struct resource *regs;
+ unsigned long value;
+ int err;
+
+ dpaux = devm_kzalloc(&pdev->dev, sizeof(*dpaux), GFP_KERNEL);
+ if (!dpaux)
+ return -ENOMEM;
+
+ init_completion(&dpaux->complete);
+ INIT_LIST_HEAD(&dpaux->list);
+ dpaux->dev = &pdev->dev;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ dpaux->regs = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(dpaux->regs))
+ return PTR_ERR(dpaux->regs);
+
+ dpaux->irq = platform_get_irq(pdev, 0);
+ if (dpaux->irq < 0) {
+ dev_err(&pdev->dev, "failed to get IRQ\n");
+ return -ENXIO;
+ }
+
+ dpaux->rst = devm_reset_control_get(&pdev->dev, "dpaux");
+ if (IS_ERR(dpaux->rst))
+ return PTR_ERR(dpaux->rst);
+
+ dpaux->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(dpaux->clk))
+ return PTR_ERR(dpaux->clk);
+
+ err = clk_prepare_enable(dpaux->clk);
+ if (err < 0)
+ return err;
+
+ reset_control_deassert(dpaux->rst);
+
+ dpaux->clk_parent = devm_clk_get(&pdev->dev, "parent");
+ if (IS_ERR(dpaux->clk_parent))
+ return PTR_ERR(dpaux->clk_parent);
+
+ err = clk_prepare_enable(dpaux->clk_parent);
+ if (err < 0)
+ return err;
+
+ err = clk_set_rate(dpaux->clk_parent, 270000000);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to set clock to 270 MHz: %d\n",
+ err);
+ return err;
+ }
+
+ dpaux->vdd = devm_regulator_get(&pdev->dev, "vdd");
+ if (IS_ERR(dpaux->vdd))
+ return PTR_ERR(dpaux->vdd);
+
+ err = devm_request_irq(dpaux->dev, dpaux->irq, tegra_dpaux_irq, 0,
+ dev_name(dpaux->dev), dpaux);
+ if (err < 0) {
+ dev_err(dpaux->dev, "failed to request IRQ#%u: %d\n",
+ dpaux->irq, err);
+ return err;
+ }
+
+ dpaux->aux.transfer = tegra_dpaux_transfer;
+ dpaux->aux.dev = &pdev->dev;
+
+ err = drm_dp_aux_register_i2c_bus(&dpaux->aux);
+ if (err < 0)
+ return err;
+
+ /* enable and clear all interrupts */
+ value = DPAUX_INTR_AUX_DONE | DPAUX_INTR_IRQ_EVENT |
+ DPAUX_INTR_UNPLUG_EVENT | DPAUX_INTR_PLUG_EVENT;
+ tegra_dpaux_writel(dpaux, value, DPAUX_INTR_EN_AUX);
+ tegra_dpaux_writel(dpaux, value, DPAUX_INTR_AUX);
+
+ mutex_lock(&dpaux_lock);
+ list_add_tail(&dpaux->list, &dpaux_list);
+ mutex_unlock(&dpaux_lock);
+
+ platform_set_drvdata(pdev, dpaux);
+
+ return 0;
+}
+
+static int tegra_dpaux_remove(struct platform_device *pdev)
+{
+ struct tegra_dpaux *dpaux = platform_get_drvdata(pdev);
+
+ drm_dp_aux_unregister_i2c_bus(&dpaux->aux);
+
+ mutex_lock(&dpaux_lock);
+ list_del(&dpaux->list);
+ mutex_unlock(&dpaux_lock);
+
+ clk_disable_unprepare(dpaux->clk_parent);
+ reset_control_assert(dpaux->rst);
+ clk_disable_unprepare(dpaux->clk);
+
+ return 0;
+}
+
+static const struct of_device_id tegra_dpaux_of_match[] = {
+ { .compatible = "nvidia,tegra124-dpaux", },
+ { },
+};
+
+struct platform_driver tegra_dpaux_driver = {
+ .driver = {
+ .name = "tegra-dpaux",
+ .of_match_table = tegra_dpaux_of_match,
+ },
+ .probe = tegra_dpaux_probe,
+ .remove = tegra_dpaux_remove,
+};
+
+struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np)
+{
+ struct tegra_dpaux *dpaux;
+
+ mutex_lock(&dpaux_lock);
+
+ list_for_each_entry(dpaux, &dpaux_list, list)
+ if (np == dpaux->dev->of_node) {
+ mutex_unlock(&dpaux_lock);
+ return dpaux;
+ }
+
+ mutex_unlock(&dpaux_lock);
+
+ return NULL;
+}
+
+int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output)
+{
+ unsigned long timeout;
+ int err;
+
+ dpaux->output = output;
+
+ err = regulator_enable(dpaux->vdd);
+ if (err < 0)
+ return err;
+
+ timeout = jiffies + msecs_to_jiffies(250);
+
+ while (time_before(jiffies, timeout)) {
+ enum drm_connector_status status;
+
+ status = tegra_dpaux_detect(dpaux);
+ if (status == connector_status_connected)
+ return 0;
+
+ usleep_range(1000, 2000);
+ }
+
+ return -ETIMEDOUT;
+}
+
+int tegra_dpaux_detach(struct tegra_dpaux *dpaux)
+{
+ unsigned long timeout;
+ int err;
+
+ err = regulator_disable(dpaux->vdd);
+ if (err < 0)
+ return err;
+
+ timeout = jiffies + msecs_to_jiffies(250);
+
+ while (time_before(jiffies, timeout)) {
+ enum drm_connector_status status;
+
+ status = tegra_dpaux_detect(dpaux);
+ if (status == connector_status_disconnected) {
+ dpaux->output = NULL;
+ return 0;
+ }
+
+ usleep_range(1000, 2000);
+ }
+
+ return -ETIMEDOUT;
+}
+
+enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux)
+{
+ unsigned long value;
+
+ value = tegra_dpaux_readl(dpaux, DPAUX_DP_AUXSTAT);
+
+ if (value & DPAUX_DP_AUXSTAT_HPD_STATUS)
+ return connector_status_connected;
+
+ return connector_status_disconnected;
+}
+
+int tegra_dpaux_enable(struct tegra_dpaux *dpaux)
+{
+ unsigned long value;
+
+ value = DPAUX_HYBRID_PADCTL_AUX_CMH(2) |
+ DPAUX_HYBRID_PADCTL_AUX_DRVZ(4) |
+ DPAUX_HYBRID_PADCTL_AUX_DRVI(0x18) |
+ DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV |
+ DPAUX_HYBRID_PADCTL_MODE_AUX;
+ tegra_dpaux_writel(dpaux, value, DPAUX_HYBRID_PADCTL);
+
+ value = tegra_dpaux_readl(dpaux, DPAUX_HYBRID_SPARE);
+ value &= ~DPAUX_HYBRID_SPARE_PAD_POWER_DOWN;
+ tegra_dpaux_writel(dpaux, value, DPAUX_HYBRID_SPARE);
+
+ return 0;
+}
+
+int tegra_dpaux_disable(struct tegra_dpaux *dpaux)
+{
+ unsigned long value;
+
+ value = tegra_dpaux_readl(dpaux, DPAUX_HYBRID_SPARE);
+ value |= DPAUX_HYBRID_SPARE_PAD_POWER_DOWN;
+ tegra_dpaux_writel(dpaux, value, DPAUX_HYBRID_SPARE);
+
+ return 0;
+}
+
+int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding)
+{
+ int err;
+
+ err = drm_dp_dpcd_writeb(&dpaux->aux, DP_MAIN_LINK_CHANNEL_CODING_SET,
+ encoding);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
+ u8 pattern)
+{
+ u8 tp = pattern & DP_TRAINING_PATTERN_MASK;
+ u8 status[DP_LINK_STATUS_SIZE], values[4];
+ unsigned int i;
+ int err;
+
+ err = drm_dp_dpcd_writeb(&dpaux->aux, DP_TRAINING_PATTERN_SET, pattern);
+ if (err < 0)
+ return err;
+
+ if (tp == DP_TRAINING_PATTERN_DISABLE)
+ return 0;
+
+ for (i = 0; i < link->num_lanes; i++)
+ values[i] = DP_TRAIN_MAX_PRE_EMPHASIS_REACHED |
+ DP_TRAIN_PRE_EMPHASIS_0 |
+ DP_TRAIN_MAX_SWING_REACHED |
+ DP_TRAIN_VOLTAGE_SWING_400;
+
+ err = drm_dp_dpcd_write(&dpaux->aux, DP_TRAINING_LANE0_SET, values,
+ link->num_lanes);
+ if (err < 0)
+ return err;
+
+ usleep_range(500, 1000);
+
+ err = drm_dp_dpcd_read_link_status(&dpaux->aux, status);
+ if (err < 0)
+ return err;
+
+ switch (tp) {
+ case DP_TRAINING_PATTERN_1:
+ if (!drm_dp_clock_recovery_ok(status, link->num_lanes))
+ return -EAGAIN;
+
+ break;
+
+ case DP_TRAINING_PATTERN_2:
+ if (!drm_dp_channel_eq_ok(status, link->num_lanes))
+ return -EAGAIN;
+
+ break;
+
+ default:
+ dev_err(dpaux->dev, "unsupported training pattern %u\n", tp);
+ return -EINVAL;
+ }
+
+ err = drm_dp_dpcd_writeb(&dpaux->aux, DP_EDP_CONFIGURATION_SET, 0);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/tegra/dpaux.h b/drivers/gpu/drm/tegra/dpaux.h
new file mode 100644
index 000000000000..4f5bf10fdff9
--- /dev/null
+++ b/drivers/gpu/drm/tegra/dpaux.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2013 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef DRM_TEGRA_DPAUX_H
+#define DRM_TEGRA_DPAUX_H
+
+#define DPAUX_CTXSW 0x00
+
+#define DPAUX_INTR_EN_AUX 0x01
+#define DPAUX_INTR_AUX 0x05
+#define DPAUX_INTR_AUX_DONE (1 << 3)
+#define DPAUX_INTR_IRQ_EVENT (1 << 2)
+#define DPAUX_INTR_UNPLUG_EVENT (1 << 1)
+#define DPAUX_INTR_PLUG_EVENT (1 << 0)
+
+#define DPAUX_DP_AUXDATA_WRITE(x) (0x09 + ((x) << 2))
+#define DPAUX_DP_AUXDATA_READ(x) (0x19 + ((x) << 2))
+#define DPAUX_DP_AUXADDR 0x29
+
+#define DPAUX_DP_AUXCTL 0x2d
+#define DPAUX_DP_AUXCTL_TRANSACTREQ (1 << 16)
+#define DPAUX_DP_AUXCTL_CMD_AUX_RD (9 << 12)
+#define DPAUX_DP_AUXCTL_CMD_AUX_WR (8 << 12)
+#define DPAUX_DP_AUXCTL_CMD_MOT_RQ (6 << 12)
+#define DPAUX_DP_AUXCTL_CMD_MOT_RD (5 << 12)
+#define DPAUX_DP_AUXCTL_CMD_MOT_WR (4 << 12)
+#define DPAUX_DP_AUXCTL_CMD_I2C_RQ (2 << 12)
+#define DPAUX_DP_AUXCTL_CMD_I2C_RD (1 << 12)
+#define DPAUX_DP_AUXCTL_CMD_I2C_WR (0 << 12)
+#define DPAUX_DP_AUXCTL_CMDLEN(x) ((x) & 0xff)
+
+#define DPAUX_DP_AUXSTAT 0x31
+#define DPAUX_DP_AUXSTAT_HPD_STATUS (1 << 28)
+#define DPAUX_DP_AUXSTAT_REPLY_TYPE_MASK (0xf0000)
+#define DPAUX_DP_AUXSTAT_NO_STOP_ERROR (1 << 11)
+#define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR (1 << 10)
+#define DPAUX_DP_AUXSTAT_RX_ERROR (1 << 9)
+#define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR (1 << 8)
+#define DPAUX_DP_AUXSTAT_REPLY_MASK (0xff)
+
+#define DPAUX_DP_AUX_SINKSTAT_LO 0x35
+#define DPAUX_DP_AUX_SINKSTAT_HI 0x39
+
+#define DPAUX_HPD_CONFIG 0x3d
+#define DPAUX_HPD_CONFIG_UNPLUG_MIN_TIME(x) (((x) & 0xffff) << 16)
+#define DPAUX_HPD_CONFIG_PLUG_MIN_TIME(x) ((x) & 0xffff)
+
+#define DPAUX_HPD_IRQ_CONFIG 0x41
+#define DPAUX_HPD_IRQ_CONFIG_MIN_LOW_TIME(x) ((x) & 0xffff)
+
+#define DPAUX_DP_AUX_CONFIG 0x45
+
+#define DPAUX_HYBRID_PADCTL 0x49
+#define DPAUX_HYBRID_PADCTL_AUX_CMH(x) (((x) & 0x3) << 12)
+#define DPAUX_HYBRID_PADCTL_AUX_DRVZ(x) (((x) & 0x7) << 8)
+#define DPAUX_HYBRID_PADCTL_AUX_DRVI(x) (((x) & 0x3f) << 2)
+#define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV (1 << 1)
+#define DPAUX_HYBRID_PADCTL_MODE_I2C (1 << 0)
+#define DPAUX_HYBRID_PADCTL_MODE_AUX (0 << 0)
+
+#define DPAUX_HYBRID_SPARE 0x4d
+#define DPAUX_HYBRID_SPARE_PAD_POWER_DOWN (1 << 0)
+
+#define DPAUX_SCRATCH_REG0 0x51
+#define DPAUX_SCRATCH_REG1 0x55
+#define DPAUX_SCRATCH_REG2 0x59
+
+#endif
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index c71594754f46..6f5b6e2f552e 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -665,6 +665,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
{ .compatible = "nvidia,tegra114-hdmi", },
{ .compatible = "nvidia,tegra114-gr3d", },
{ .compatible = "nvidia,tegra124-dc", },
+ { .compatible = "nvidia,tegra124-sor", },
{ /* sentinel */ }
};
@@ -691,14 +692,22 @@ static int __init host1x_drm_init(void)
if (err < 0)
goto unregister_dc;
- err = platform_driver_register(&tegra_hdmi_driver);
+ err = platform_driver_register(&tegra_sor_driver);
if (err < 0)
goto unregister_dsi;
- err = platform_driver_register(&tegra_gr2d_driver);
+ err = platform_driver_register(&tegra_hdmi_driver);
+ if (err < 0)
+ goto unregister_sor;
+
+ err = platform_driver_register(&tegra_dpaux_driver);
if (err < 0)
goto unregister_hdmi;
+ err = platform_driver_register(&tegra_gr2d_driver);
+ if (err < 0)
+ goto unregister_dpaux;
+
err = platform_driver_register(&tegra_gr3d_driver);
if (err < 0)
goto unregister_gr2d;
@@ -707,8 +716,12 @@ static int __init host1x_drm_init(void)
unregister_gr2d:
platform_driver_unregister(&tegra_gr2d_driver);
+unregister_dpaux:
+ platform_driver_unregister(&tegra_dpaux_driver);
unregister_hdmi:
platform_driver_unregister(&tegra_hdmi_driver);
+unregister_sor:
+ platform_driver_unregister(&tegra_sor_driver);
unregister_dsi:
platform_driver_unregister(&tegra_dsi_driver);
unregister_dc:
@@ -723,7 +736,9 @@ static void __exit host1x_drm_exit(void)
{
platform_driver_unregister(&tegra_gr3d_driver);
platform_driver_unregister(&tegra_gr2d_driver);
+ platform_driver_unregister(&tegra_dpaux_driver);
platform_driver_unregister(&tegra_hdmi_driver);
+ platform_driver_unregister(&tegra_sor_driver);
platform_driver_unregister(&tegra_dsi_driver);
platform_driver_unregister(&tegra_dc_driver);
host1x_driver_unregister(&host1x_drm_driver);
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index bf1cac7658f8..126332c3ecbb 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -179,12 +179,14 @@ struct tegra_output_ops {
int (*check_mode)(struct tegra_output *output,
struct drm_display_mode *mode,
enum drm_mode_status *status);
+ enum drm_connector_status (*detect)(struct tegra_output *output);
};
enum tegra_output_type {
TEGRA_OUTPUT_RGB,
TEGRA_OUTPUT_HDMI,
TEGRA_OUTPUT_DSI,
+ TEGRA_OUTPUT_EDP,
};
struct tegra_output {
@@ -265,6 +267,22 @@ extern int tegra_output_remove(struct tegra_output *output);
extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
extern int tegra_output_exit(struct tegra_output *output);
+/* from dpaux.c */
+
+struct tegra_dpaux;
+struct drm_dp_link;
+struct drm_dp_aux;
+
+struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
+enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
+int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
+int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
+int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
+int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
+int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
+int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
+ u8 pattern);
+
/* from fb.c */
struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
unsigned int index);
@@ -278,7 +296,9 @@ extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
extern struct platform_driver tegra_dc_driver;
extern struct platform_driver tegra_dsi_driver;
+extern struct platform_driver tegra_sor_driver;
extern struct platform_driver tegra_hdmi_driver;
+extern struct platform_driver tegra_dpaux_driver;
extern struct platform_driver tegra_gr2d_driver;
extern struct platform_driver tegra_gr3d_driver;
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
index 57cecbd18ca8..a3e4f1eca6f7 100644
--- a/drivers/gpu/drm/tegra/output.c
+++ b/drivers/gpu/drm/tegra/output.c
@@ -77,6 +77,9 @@ tegra_connector_detect(struct drm_connector *connector, bool force)
struct tegra_output *output = connector_to_output(connector);
enum drm_connector_status status = connector_status_unknown;
+ if (output->ops->detect)
+ return output->ops->detect(output);
+
if (gpio_is_valid(output->hpd_gpio)) {
if (gpio_get_value(output->hpd_gpio) == 0)
status = connector_status_disconnected;
@@ -292,6 +295,11 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output)
encoder = DRM_MODE_ENCODER_DSI;
break;
+ case TEGRA_OUTPUT_EDP:
+ connector = DRM_MODE_CONNECTOR_eDP;
+ encoder = DRM_MODE_ENCODER_TMDS;
+ break;
+
default:
connector = DRM_MODE_CONNECTOR_Unknown;
encoder = DRM_MODE_ENCODER_NONE;
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
new file mode 100644
index 000000000000..39c804a187be
--- /dev/null
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -0,0 +1,1092 @@
+/*
+ * Copyright (C) 2013 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <linux/tegra-powergate.h>
+
+#include <drm/drm_dp_helper.h>
+
+#include "dc.h"
+#include "drm.h"
+#include "sor.h"
+
+struct tegra_sor {
+ struct host1x_client client;
+ struct tegra_output output;
+ struct device *dev;
+
+ void __iomem *regs;
+
+ struct reset_control *rst;
+ struct clk *clk_parent;
+ struct clk *clk_safe;
+ struct clk *clk_dp;
+ struct clk *clk;
+
+ struct tegra_dpaux *dpaux;
+
+ bool enabled;
+};
+
+static inline struct tegra_sor *
+host1x_client_to_sor(struct host1x_client *client)
+{
+ return container_of(client, struct tegra_sor, client);
+}
+
+static inline struct tegra_sor *to_sor(struct tegra_output *output)
+{
+ return container_of(output, struct tegra_sor, output);
+}
+
+static inline unsigned long tegra_sor_readl(struct tegra_sor *sor,
+ unsigned long offset)
+{
+ return readl(sor->regs + (offset << 2));
+}
+
+static inline void tegra_sor_writel(struct tegra_sor *sor, unsigned long value,
+ unsigned long offset)
+{
+ writel(value, sor->regs + (offset << 2));
+}
+
+static int tegra_sor_dp_train_fast(struct tegra_sor *sor,
+ struct drm_dp_link *link)
+{
+ unsigned long value;
+ unsigned int i;
+ u8 pattern;
+ int err;
+
+ /* setup lane parameters */
+ value = SOR_LANE_DRIVE_CURRENT_LANE3(0x40) |
+ SOR_LANE_DRIVE_CURRENT_LANE2(0x40) |
+ SOR_LANE_DRIVE_CURRENT_LANE1(0x40) |
+ SOR_LANE_DRIVE_CURRENT_LANE0(0x40);
+ tegra_sor_writel(sor, value, SOR_LANE_DRIVE_CURRENT_0);
+
+ value = SOR_LANE_PREEMPHASIS_LANE3(0x0f) |
+ SOR_LANE_PREEMPHASIS_LANE2(0x0f) |
+ SOR_LANE_PREEMPHASIS_LANE1(0x0f) |
+ SOR_LANE_PREEMPHASIS_LANE0(0x0f);
+ tegra_sor_writel(sor, value, SOR_LANE_PREEMPHASIS_0);
+
+ value = SOR_LANE_POST_CURSOR_LANE3(0x00) |
+ SOR_LANE_POST_CURSOR_LANE2(0x00) |
+ SOR_LANE_POST_CURSOR_LANE1(0x00) |
+ SOR_LANE_POST_CURSOR_LANE0(0x00);
+ tegra_sor_writel(sor, value, SOR_LANE_POST_CURSOR_0);
+
+ /* disable LVDS mode */
+ tegra_sor_writel(sor, 0, SOR_LVDS);
+
+ value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
+ value |= SOR_DP_PADCTL_TX_PU_ENABLE;
+ value &= ~SOR_DP_PADCTL_TX_PU_MASK;
+ value |= SOR_DP_PADCTL_TX_PU(2); /* XXX: don't hardcode? */
+ tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
+
+ value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
+ value |= SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 |
+ SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0;
+ tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
+
+ usleep_range(10, 100);
+
+ value = tegra_sor_readl(sor, SOR_DP_PADCTL_0);
+ value &= ~(SOR_DP_PADCTL_CM_TXD_3 | SOR_DP_PADCTL_CM_TXD_2 |
+ SOR_DP_PADCTL_CM_TXD_1 | SOR_DP_PADCTL_CM_TXD_0);
+ tegra_sor_writel(sor, value, SOR_DP_PADCTL_0);
+
+ err = tegra_dpaux_prepare(sor->dpaux, DP_SET_ANSI_8B10B);
+ if (err < 0)
+ return err;
+
+ for (i = 0, value = 0; i < link->num_lanes; i++) {
+ unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
+ SOR_DP_TPG_SCRAMBLER_NONE |
+ SOR_DP_TPG_PATTERN_TRAIN1;
+ value = (value << 8) | lane;
+ }
+
+ tegra_sor_writel(sor, value, SOR_DP_TPG);
+
+ pattern = DP_TRAINING_PATTERN_1;
+
+ err = tegra_dpaux_train(sor->dpaux, link, pattern);
+ if (err < 0)
+ return err;
+
+ value = tegra_sor_readl(sor, SOR_DP_SPARE_0);
+ value |= SOR_DP_SPARE_SEQ_ENABLE;
+ value &= ~SOR_DP_SPARE_PANEL_INTERNAL;
+ value |= SOR_DP_SPARE_MACRO_SOR_CLK;
+ tegra_sor_writel(sor, value, SOR_DP_SPARE_0);
+
+ for (i = 0, value = 0; i < link->num_lanes; i++) {
+ unsigned long lane = SOR_DP_TPG_CHANNEL_CODING |
+ SOR_DP_TPG_SCRAMBLER_NONE |
+ SOR_DP_TPG_PATTERN_TRAIN2;
+ value = (value << 8) | lane;
+ }
+
+ tegra_sor_writel(sor, value, SOR_DP_TPG);
+
+ pattern = DP_LINK_SCRAMBLING_DISABLE | DP_TRAINING_PATTERN_2;
+
+ err = tegra_dpaux_train(sor->dpaux, link, pattern);
+ if (err < 0)
+ return err;
+
+ for (i = 0, value = 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);
+
+ pattern = DP_TRAINING_PATTERN_DISABLE;
+
+ err = tegra_dpaux_train(sor->dpaux, link, pattern);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static void tegra_sor_super_update(struct tegra_sor *sor)
+{
+ tegra_sor_writel(sor, 0, SOR_SUPER_STATE_0);
+ tegra_sor_writel(sor, 1, SOR_SUPER_STATE_0);
+ tegra_sor_writel(sor, 0, SOR_SUPER_STATE_0);
+}
+
+static void tegra_sor_update(struct tegra_sor *sor)
+{
+ tegra_sor_writel(sor, 0, SOR_STATE_0);
+ tegra_sor_writel(sor, 1, SOR_STATE_0);
+ tegra_sor_writel(sor, 0, SOR_STATE_0);
+}
+
+static int tegra_sor_setup_pwm(struct tegra_sor *sor, unsigned long timeout)
+{
+ unsigned long value;
+
+ value = tegra_sor_readl(sor, SOR_PWM_DIV);
+ value &= ~SOR_PWM_DIV_MASK;
+ value |= 0x400; /* period */
+ tegra_sor_writel(sor, value, SOR_PWM_DIV);
+
+ value = tegra_sor_readl(sor, SOR_PWM_CTL);
+ value &= ~SOR_PWM_CTL_DUTY_CYCLE_MASK;
+ value |= 0x400; /* duty cycle */
+ value &= ~SOR_PWM_CTL_CLK_SEL; /* clock source: PCLK */
+ value |= SOR_PWM_CTL_TRIGGER;
+ tegra_sor_writel(sor, value, SOR_PWM_CTL);
+
+ timeout = jiffies + msecs_to_jiffies(timeout);
+
+ while (time_before(jiffies, timeout)) {
+ value = tegra_sor_readl(sor, SOR_PWM_CTL);
+ if ((value & SOR_PWM_CTL_TRIGGER) == 0)
+ return 0;
+
+ usleep_range(25, 100);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int tegra_sor_attach(struct tegra_sor *sor)
+{
+ unsigned long value, timeout;
+
+ /* wake up in normal mode */
+ value = tegra_sor_readl(sor, SOR_SUPER_STATE_1);
+ value |= SOR_SUPER_STATE_HEAD_MODE_AWAKE;
+ value |= SOR_SUPER_STATE_MODE_NORMAL;
+ tegra_sor_writel(sor, value, SOR_SUPER_STATE_1);
+ tegra_sor_super_update(sor);
+
+ /* attach */
+ 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)
+ return 0;
+
+ usleep_range(25, 100);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int tegra_sor_wakeup(struct tegra_sor *sor)
+{
+ struct tegra_dc *dc = to_tegra_dc(sor->output.encoder.crtc);
+ unsigned long value, timeout;
+
+ /* enable display controller outputs */
+ value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);
+ value |= PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
+ PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
+ tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
+
+ tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL);
+ tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
+
+ timeout = jiffies + msecs_to_jiffies(250);
+
+ /* wait for head to wake up */
+ while (time_before(jiffies, timeout)) {
+ value = tegra_sor_readl(sor, SOR_TEST);
+ value &= SOR_TEST_HEAD_MODE_MASK;
+
+ if (value == SOR_TEST_HEAD_MODE_AWAKE)
+ return 0;
+
+ usleep_range(25, 100);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int tegra_sor_power_up(struct tegra_sor *sor, unsigned long timeout)
+{
+ unsigned long value;
+
+ value = tegra_sor_readl(sor, SOR_PWR);
+ value |= SOR_PWR_TRIGGER | SOR_PWR_NORMAL_STATE_PU;
+ tegra_sor_writel(sor, value, SOR_PWR);
+
+ timeout = jiffies + msecs_to_jiffies(timeout);
+
+ while (time_before(jiffies, timeout)) {
+ value = tegra_sor_readl(sor, SOR_PWR);
+ if ((value & SOR_PWR_TRIGGER) == 0)
+ return 0;
+
+ usleep_range(25, 100);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int tegra_output_sor_enable(struct tegra_output *output)
+{
+ struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc);
+ struct drm_display_mode *mode = &dc->base.mode;
+ unsigned int vbe, vse, hbe, hse, vbs, hbs, i;
+ struct tegra_sor *sor = to_sor(output);
+ unsigned long value;
+ int err;
+
+ if (sor->enabled)
+ return 0;
+
+ err = clk_prepare_enable(sor->clk);
+ if (err < 0)
+ return err;
+
+ reset_control_deassert(sor->rst);
+
+ if (sor->dpaux) {
+ err = tegra_dpaux_enable(sor->dpaux);
+ if (err < 0)
+ dev_err(sor->dev, "failed to enable DP: %d\n", err);
+ }
+
+ 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_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);
+ return err;
+ }
+
+ 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 dplanes (XXX parameterize based on link?) */
+ 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);
+
+ value = tegra_sor_readl(sor, SOR_DP_LINKCTL_0);
+ value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK;
+ value |= SOR_DP_LINKCTL_LANE_COUNT(4);
+ 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 (2.7 GHz, XXX: parameterize based on link?) */
+ value = tegra_sor_readl(sor, SOR_CLK_CNTRL);
+ value &= ~SOR_CLK_CNTRL_DP_LINK_SPEED_MASK;
+ value |= SOR_CLK_CNTRL_DP_LINK_SPEED_G2_70;
+ 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(59); /* XXX: don't hardcode? */
+
+ 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(14); /* XXX: don't hardcode? */
+
+ value &= ~SOR_DP_CONFIG_ACTIVE_SYM_COUNT_MASK;
+ value |= SOR_DP_CONFIG_ACTIVE_SYM_COUNT(47); /* XXX: don't hardcode? */
+
+ value &= ~SOR_DP_CONFIG_ACTIVE_SYM_FRAC_MASK;
+ value |= SOR_DP_CONFIG_ACTIVE_SYM_FRAC(9); /* XXX: don't hardcode? */
+
+ value &= ~SOR_DP_CONFIG_ACTIVE_SYM_POLARITY; /* XXX: don't hardcode? */
+
+ value |= SOR_DP_CONFIG_ACTIVE_SYM_ENABLE;
+ value |= SOR_DP_CONFIG_DISPARITY_NEGATIVE; /* XXX: don't hardcode? */
+ 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 |= 137; /* XXX: don't hardcode? */
+ 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 |= 2368; /* XXX: don't hardcode? */
+ 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) {
+ /* FIXME: properly convert to struct drm_dp_aux */
+ struct drm_dp_aux *aux = (struct drm_dp_aux *)sor->dpaux;
+ struct drm_dp_link link;
+ 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);
+ return err;
+ }
+
+ err = drm_dp_link_power_up(aux, &link);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to power up eDP link: %d\n",
+ err);
+ return err;
+ }
+
+ err = drm_dp_link_configure(aux, &link);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to configure eDP link: %d\n",
+ err);
+ return err;
+ }
+
+ 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);
+ return err;
+ }
+
+ 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);
+ return err;
+ }
+
+ /* start display controller in continuous mode */
+ value = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
+ value |= WRITE_MUX;
+ tegra_dc_writel(dc, value, DC_CMD_STATE_ACCESS);
+
+ tegra_dc_writel(dc, VSYNC_H_POSITION(1), DC_DISP_DISP_TIMING_OPTIONS);
+ tegra_dc_writel(dc, DISP_CTRL_MODE_C_DISPLAY, DC_CMD_DISPLAY_COMMAND);
+
+ value = tegra_dc_readl(dc, DC_CMD_STATE_ACCESS);
+ value &= ~WRITE_MUX;
+ tegra_dc_writel(dc, value, DC_CMD_STATE_ACCESS);
+
+ /*
+ * configure panel (24bpp, vsync-, hsync-, DP-A protocol, complete
+ * raster, associate with display controller)
+ */
+ value = SOR_STATE_ASY_PIXELDEPTH_BPP_24_444 |
+ SOR_STATE_ASY_VSYNCPOL |
+ SOR_STATE_ASY_HSYNCPOL |
+ SOR_STATE_ASY_PROTOCOL_DP_A |
+ SOR_STATE_ASY_CRC_MODE_COMPLETE |
+ SOR_STATE_ASY_OWNER(dc->pipe + 1);
+ 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));
+
+ /* XXX interlaced mode */
+ tegra_sor_writel(sor, 0x00000001, SOR_HEAD_STATE_5(0));
+
+ /* CSTM (LVDS, link A/B, upper) */
+ value = SOR_CSTM_LVDS | SOR_CSTM_LINK_ACT_B | 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);
+ return err;
+ }
+
+ value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
+ value |= SOR_ENABLE;
+ tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
+
+ tegra_sor_update(sor);
+
+ err = tegra_sor_attach(sor);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to attach SOR: %d\n", err);
+ return err;
+ }
+
+ err = tegra_sor_wakeup(sor);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to enable DC: %d\n", err);
+ return err;
+ }
+
+ sor->enabled = true;
+
+ return 0;
+}
+
+static int tegra_sor_detach(struct tegra_sor *sor)
+{
+ unsigned long value, timeout;
+
+ /* 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_DOWN |
+ 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_output_sor_disable(struct tegra_output *output)
+{
+ struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc);
+ struct tegra_sor *sor = to_sor(output);
+ unsigned long value;
+ int err;
+
+ if (!sor->enabled)
+ return 0;
+
+ err = tegra_sor_detach(sor);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to detach SOR: %d\n", err);
+ return err;
+ }
+
+ 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) {
+ /*
+ * XXX: We can't do this here because it causes the SOR to go
+ * into an erroneous state and the output will look scrambled
+ * the next time it is enabled. Presumably this is because we
+ * should be doing this only on the next VBLANK. A possible
+ * solution would be to queue a "power-off" event to trigger
+ * this code to be run during the next VBLANK.
+ */
+ /*
+ value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);
+ value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
+ PW4_ENABLE | PM0_ENABLE | PM1_ENABLE);
+ tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
+ */
+
+ value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
+ value &= ~DISP_CTRL_MODE_MASK;
+ tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
+
+ 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_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL);
+ tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
+ }
+
+ err = tegra_sor_power_down(sor);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to power down SOR: %d\n", err);
+ return err;
+ }
+
+ if (sor->dpaux) {
+ err = tegra_dpaux_disable(sor->dpaux);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to disable DP: %d\n", err);
+ return err;
+ }
+ }
+
+ 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);
+ return err;
+ }
+
+ reset_control_assert(sor->rst);
+ clk_disable_unprepare(sor->clk);
+
+ sor->enabled = false;
+
+ return 0;
+}
+
+static int tegra_output_sor_setup_clock(struct tegra_output *output,
+ struct clk *clk, unsigned long pclk)
+{
+ struct tegra_sor *sor = to_sor(output);
+ int err;
+
+ /* round to next MHz */
+ pclk = DIV_ROUND_UP(pclk / 2, 1000000) * 1000000;
+
+ err = clk_set_parent(clk, sor->clk_parent);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to set parent clock: %d\n", err);
+ return err;
+ }
+
+ err = clk_set_rate(sor->clk_parent, pclk);
+ if (err < 0) {
+ dev_err(sor->dev, "failed to set base clock rate to %lu Hz\n",
+ pclk * 2);
+ return err;
+ }
+
+ return 0;
+}
+
+static int tegra_output_sor_check_mode(struct tegra_output *output,
+ struct drm_display_mode *mode,
+ enum drm_mode_status *status)
+{
+ /*
+ * FIXME: For now, always assume that the mode is okay.
+ */
+
+ *status = MODE_OK;
+
+ return 0;
+}
+
+static enum drm_connector_status
+tegra_output_sor_detect(struct tegra_output *output)
+{
+ struct tegra_sor *sor = to_sor(output);
+
+ if (sor->dpaux)
+ return tegra_dpaux_detect(sor->dpaux);
+
+ return connector_status_unknown;
+}
+
+static const struct tegra_output_ops sor_ops = {
+ .enable = tegra_output_sor_enable,
+ .disable = tegra_output_sor_disable,
+ .setup_clock = tegra_output_sor_setup_clock,
+ .check_mode = tegra_output_sor_check_mode,
+ .detect = tegra_output_sor_detect,
+};
+
+static int tegra_sor_init(struct host1x_client *client)
+{
+ struct tegra_drm *tegra = dev_get_drvdata(client->parent);
+ struct tegra_sor *sor = host1x_client_to_sor(client);
+ int err;
+
+ if (!sor->dpaux)
+ sor->output.type = TEGRA_OUTPUT_LVDS;
+ else
+ sor->output.type = TEGRA_OUTPUT_EDP;
+
+ sor->output.dev = sor->dev;
+ sor->output.ops = &sor_ops;
+
+ err = tegra_output_init(tegra->drm, &sor->output);
+ if (err < 0) {
+ dev_err(sor->dev, "output setup failed: %d\n", err);
+ return 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;
+ }
+ }
+
+ return 0;
+}
+
+static int tegra_sor_exit(struct host1x_client *client)
+{
+ struct tegra_sor *sor = host1x_client_to_sor(client);
+ int err;
+
+ err = tegra_output_disable(&sor->output);
+ if (err < 0) {
+ dev_err(sor->dev, "output failed to disable: %d\n", err);
+ return err;
+ }
+
+ 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;
+ }
+ }
+
+ err = tegra_output_exit(&sor->output);
+ if (err < 0) {
+ dev_err(sor->dev, "output cleanup failed: %d\n", err);
+ return err;
+ }
+
+ 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);
+
+ err = clk_prepare_enable(sor->clk_parent);
+ if (err < 0)
+ return err;
+
+ sor->clk_safe = devm_clk_get(&pdev->dev, "safe");
+ if (IS_ERR(sor->clk_safe))
+ return PTR_ERR(sor->clk_safe);
+
+ err = clk_prepare_enable(sor->clk_safe);
+ if (err < 0)
+ return err;
+
+ sor->clk_dp = devm_clk_get(&pdev->dev, "dp");
+ if (IS_ERR(sor->clk_dp))
+ return PTR_ERR(sor->clk_dp);
+
+ err = clk_prepare_enable(sor->clk_dp);
+ if (err < 0)
+ return err;
+
+ INIT_LIST_HEAD(&sor->client.list);
+ sor->client.ops = &sor_client_ops;
+ sor->client.dev = &pdev->dev;
+
+ 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;
+ }
+
+ clk_disable_unprepare(sor->clk_parent);
+ clk_disable_unprepare(sor->clk_safe);
+ clk_disable_unprepare(sor->clk_dp);
+ clk_disable_unprepare(sor->clk);
+
+ return 0;
+}
+
+static const struct of_device_id tegra_sor_of_match[] = {
+ { .compatible = "nvidia,tegra124-sor", },
+ { },
+};
+
+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,
+};
diff --git a/drivers/gpu/drm/tegra/sor.h b/drivers/gpu/drm/tegra/sor.h
new file mode 100644
index 000000000000..f4156d54cd05
--- /dev/null
+++ b/drivers/gpu/drm/tegra/sor.h
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2013 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef DRM_TEGRA_SOR_H
+#define DRM_TEGRA_SOR_H
+
+#define SOR_CTXSW 0x00
+
+#define SOR_SUPER_STATE_0 0x01
+
+#define SOR_SUPER_STATE_1 0x02
+#define SOR_SUPER_STATE_ATTACHED (1 << 3)
+#define SOR_SUPER_STATE_MODE_NORMAL (1 << 2)
+#define SOR_SUPER_STATE_HEAD_MODE_MASK (3 << 0)
+#define SOR_SUPER_STATE_HEAD_MODE_AWAKE (2 << 0)
+#define SOR_SUPER_STATE_HEAD_MODE_SNOOZE (1 << 0)
+#define SOR_SUPER_STATE_HEAD_MODE_SLEEP (0 << 0)
+
+#define SOR_STATE_0 0x03
+
+#define SOR_STATE_1 0x04
+#define SOR_STATE_ASY_PIXELDEPTH_MASK (0xf << 17)
+#define SOR_STATE_ASY_PIXELDEPTH_BPP_18_444 (0x2 << 17)
+#define SOR_STATE_ASY_PIXELDEPTH_BPP_24_444 (0x5 << 17)
+#define SOR_STATE_ASY_VSYNCPOL (1 << 13)
+#define SOR_STATE_ASY_HSYNCPOL (1 << 12)
+#define SOR_STATE_ASY_PROTOCOL_MASK (0xf << 8)
+#define SOR_STATE_ASY_PROTOCOL_CUSTOM (0xf << 8)
+#define SOR_STATE_ASY_PROTOCOL_DP_A (0x8 << 8)
+#define SOR_STATE_ASY_PROTOCOL_DP_B (0x9 << 8)
+#define SOR_STATE_ASY_PROTOCOL_LVDS (0x0 << 8)
+#define SOR_STATE_ASY_CRC_MODE_MASK (0x3 << 6)
+#define SOR_STATE_ASY_CRC_MODE_NON_ACTIVE (0x2 << 6)
+#define SOR_STATE_ASY_CRC_MODE_COMPLETE (0x1 << 6)
+#define SOR_STATE_ASY_CRC_MODE_ACTIVE (0x0 << 6)
+#define SOR_STATE_ASY_OWNER(x) (((x) & 0xf) << 0)
+
+#define SOR_HEAD_STATE_0(x) (0x05 + (x))
+#define SOR_HEAD_STATE_1(x) (0x07 + (x))
+#define SOR_HEAD_STATE_2(x) (0x09 + (x))
+#define SOR_HEAD_STATE_3(x) (0x0b + (x))
+#define SOR_HEAD_STATE_4(x) (0x0d + (x))
+#define SOR_HEAD_STATE_5(x) (0x0f + (x))
+#define SOR_CRC_CNTRL 0x11
+#define SOR_DP_DEBUG_MVID 0x12
+
+#define SOR_CLK_CNTRL 0x13
+#define SOR_CLK_CNTRL_DP_LINK_SPEED_MASK (0x1f << 2)
+#define SOR_CLK_CNTRL_DP_LINK_SPEED(x) (((x) & 0x1f) << 2)
+#define SOR_CLK_CNTRL_DP_LINK_SPEED_G1_62 (0x06 << 2)
+#define SOR_CLK_CNTRL_DP_LINK_SPEED_G2_70 (0x0a << 2)
+#define SOR_CLK_CNTRL_DP_LINK_SPEED_G5_40 (0x14 << 2)
+#define SOR_CLK_CNTRL_DP_CLK_SEL_MASK (3 << 0)
+#define SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_PCLK (0 << 0)
+#define SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_PCLK (1 << 0)
+#define SOR_CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK (2 << 0)
+#define SOR_CLK_CNTRL_DP_CLK_SEL_DIFF_DPCLK (3 << 0)
+
+#define SOR_CAP 0x14
+
+#define SOR_PWR 0x15
+#define SOR_PWR_TRIGGER (1 << 31)
+#define SOR_PWR_MODE_SAFE (1 << 28)
+#define SOR_PWR_NORMAL_STATE_PU (1 << 0)
+
+#define SOR_TEST 0x16
+#define SOR_TEST_ATTACHED (1 << 10)
+#define SOR_TEST_HEAD_MODE_MASK (3 << 8)
+#define SOR_TEST_HEAD_MODE_AWAKE (2 << 8)
+
+#define SOR_PLL_0 0x17
+#define SOR_PLL_0_ICHPMP_MASK (0xf << 24)
+#define SOR_PLL_0_ICHPMP(x) (((x) & 0xf) << 24)
+#define SOR_PLL_0_VCOCAP_MASK (0xf << 8)
+#define SOR_PLL_0_VCOCAP(x) (((x) & 0xf) << 8)
+#define SOR_PLL_0_VCOCAP_RST SOR_PLL_0_VCOCAP(3)
+#define SOR_PLL_0_PLLREG_MASK (0x3 << 6)
+#define SOR_PLL_0_PLLREG_LEVEL(x) (((x) & 0x3) << 6)
+#define SOR_PLL_0_PLLREG_LEVEL_V25 SOR_PLL_0_PLLREG_LEVEL(0)
+#define SOR_PLL_0_PLLREG_LEVEL_V15 SOR_PLL_0_PLLREG_LEVEL(1)
+#define SOR_PLL_0_PLLREG_LEVEL_V35 SOR_PLL_0_PLLREG_LEVEL(2)
+#define SOR_PLL_0_PLLREG_LEVEL_V45 SOR_PLL_0_PLLREG_LEVEL(3)
+#define SOR_PLL_0_PULLDOWN (1 << 5)
+#define SOR_PLL_0_RESISTOR_EXT (1 << 4)
+#define SOR_PLL_0_VCOPD (1 << 2)
+#define SOR_PLL_0_POWER_OFF (1 << 0)
+
+#define SOR_PLL_1 0x18
+/* XXX: read-only bit? */
+#define SOR_PLL_1_TERM_COMPOUT (1 << 15)
+#define SOR_PLL_1_TMDS_TERM (1 << 8)
+
+#define SOR_PLL_2 0x19
+#define SOR_PLL_2_LVDS_ENABLE (1 << 25)
+#define SOR_PLL_2_SEQ_PLLCAPPD_ENFORCE (1 << 24)
+#define SOR_PLL_2_PORT_POWERDOWN (1 << 23)
+#define SOR_PLL_2_BANDGAP_POWERDOWN (1 << 22)
+#define SOR_PLL_2_POWERDOWN_OVERRIDE (1 << 18)
+#define SOR_PLL_2_SEQ_PLLCAPPD (1 << 17)
+
+#define SOR_PLL_3 0x1a
+#define SOR_PLL_3_PLL_VDD_MODE_V1_8 (0 << 13)
+#define SOR_PLL_3_PLL_VDD_MODE_V3_3 (1 << 13)
+
+#define SOR_CSTM 0x1b
+#define SOR_CSTM_LVDS (1 << 16)
+#define SOR_CSTM_LINK_ACT_B (1 << 15)
+#define SOR_CSTM_LINK_ACT_A (1 << 14)
+#define SOR_CSTM_UPPER (1 << 11)
+
+#define SOR_LVDS 0x1c
+#define SOR_CRC_A 0x1d
+#define SOR_CRC_B 0x1e
+#define SOR_BLANK 0x1f
+#define SOR_SEQ_CTL 0x20
+
+#define SOR_LANE_SEQ_CTL 0x21
+#define SOR_LANE_SEQ_CTL_TRIGGER (1 << 31)
+#define SOR_LANE_SEQ_CTL_SEQUENCE_UP (0 << 20)
+#define SOR_LANE_SEQ_CTL_SEQUENCE_DOWN (1 << 20)
+#define SOR_LANE_SEQ_CTL_POWER_STATE_UP (0 << 16)
+#define SOR_LANE_SEQ_CTL_POWER_STATE_DOWN (1 << 16)
+
+#define SOR_SEQ_INST(x) (0x22 + (x))
+
+#define SOR_PWM_DIV 0x32
+#define SOR_PWM_DIV_MASK 0xffffff
+
+#define SOR_PWM_CTL 0x33
+#define SOR_PWM_CTL_TRIGGER (1 << 31)
+#define SOR_PWM_CTL_CLK_SEL (1 << 30)
+#define SOR_PWM_CTL_DUTY_CYCLE_MASK 0xffffff
+
+#define SOR_VCRC_A_0 0x34
+#define SOR_VCRC_A_1 0x35
+#define SOR_VCRC_B_0 0x36
+#define SOR_VCRC_B_1 0x37
+#define SOR_CCRC_A_0 0x38
+#define SOR_CCRC_A_1 0x39
+#define SOR_CCRC_B_0 0x3a
+#define SOR_CCRC_B_1 0x3b
+#define SOR_EDATA_A_0 0x3c
+#define SOR_EDATA_A_1 0x3d
+#define SOR_EDATA_B_0 0x3e
+#define SOR_EDATA_B_1 0x3f
+#define SOR_COUNT_A_0 0x40
+#define SOR_COUNT_A_1 0x41
+#define SOR_COUNT_B_0 0x42
+#define SOR_COUNT_B_1 0x43
+#define SOR_DEBUG_A_0 0x44
+#define SOR_DEBUG_A_1 0x45
+#define SOR_DEBUG_B_0 0x46
+#define SOR_DEBUG_B_1 0x47
+#define SOR_TRIG 0x48
+#define SOR_MSCHECK 0x49
+#define SOR_XBAR_CTRL 0x4a
+#define SOR_XBAR_POL 0x4b
+
+#define SOR_DP_LINKCTL_0 0x4c
+#define SOR_DP_LINKCTL_LANE_COUNT_MASK (0x1f << 16)
+#define SOR_DP_LINKCTL_LANE_COUNT(x) (((1 << (x)) - 1) << 16)
+#define SOR_DP_LINKCTL_ENHANCED_FRAME (1 << 14)
+#define SOR_DP_LINKCTL_TU_SIZE_MASK (0x7f << 2)
+#define SOR_DP_LINKCTL_TU_SIZE(x) (((x) & 0x7f) << 2)
+#define SOR_DP_LINKCTL_ENABLE (1 << 0)
+
+#define SOR_DP_LINKCTL_1 0x4d
+
+#define SOR_LANE_DRIVE_CURRENT_0 0x4e
+#define SOR_LANE_DRIVE_CURRENT_1 0x4f
+#define SOR_LANE4_DRIVE_CURRENT_0 0x50
+#define SOR_LANE4_DRIVE_CURRENT_1 0x51
+#define SOR_LANE_DRIVE_CURRENT_LANE3(x) (((x) & 0xff) << 24)
+#define SOR_LANE_DRIVE_CURRENT_LANE2(x) (((x) & 0xff) << 16)
+#define SOR_LANE_DRIVE_CURRENT_LANE1(x) (((x) & 0xff) << 8)
+#define SOR_LANE_DRIVE_CURRENT_LANE0(x) (((x) & 0xff) << 0)
+
+#define SOR_LANE_PREEMPHASIS_0 0x52
+#define SOR_LANE_PREEMPHASIS_1 0x53
+#define SOR_LANE4_PREEMPHASIS_0 0x54
+#define SOR_LANE4_PREEMPHASIS_1 0x55
+#define SOR_LANE_PREEMPHASIS_LANE3(x) (((x) & 0xff) << 24)
+#define SOR_LANE_PREEMPHASIS_LANE2(x) (((x) & 0xff) << 16)
+#define SOR_LANE_PREEMPHASIS_LANE1(x) (((x) & 0xff) << 8)
+#define SOR_LANE_PREEMPHASIS_LANE0(x) (((x) & 0xff) << 0)
+
+#define SOR_LANE_POST_CURSOR_0 0x56
+#define SOR_LANE_POST_CURSOR_1 0x57
+#define SOR_LANE_POST_CURSOR_LANE3(x) (((x) & 0xff) << 24)
+#define SOR_LANE_POST_CURSOR_LANE2(x) (((x) & 0xff) << 16)
+#define SOR_LANE_POST_CURSOR_LANE1(x) (((x) & 0xff) << 8)
+#define SOR_LANE_POST_CURSOR_LANE0(x) (((x) & 0xff) << 0)
+
+#define SOR_DP_CONFIG_0 0x58
+#define SOR_DP_CONFIG_DISPARITY_NEGATIVE (1 << 31)
+#define SOR_DP_CONFIG_ACTIVE_SYM_ENABLE (1 << 26)
+#define SOR_DP_CONFIG_ACTIVE_SYM_POLARITY (1 << 24)
+#define SOR_DP_CONFIG_ACTIVE_SYM_FRAC_MASK (0xf << 16)
+#define SOR_DP_CONFIG_ACTIVE_SYM_FRAC(x) (((x) & 0xf) << 16)
+#define SOR_DP_CONFIG_ACTIVE_SYM_COUNT_MASK (0x7f << 8)
+#define SOR_DP_CONFIG_ACTIVE_SYM_COUNT(x) (((x) & 0x7f) << 8)
+#define SOR_DP_CONFIG_WATERMARK_MASK (0x3f << 0)
+#define SOR_DP_CONFIG_WATERMARK(x) (((x) & 0x3f) << 0)
+
+#define SOR_DP_CONFIG_1 0x59
+#define SOR_DP_MN_0 0x5a
+#define SOR_DP_MN_1 0x5b
+
+#define SOR_DP_PADCTL_0 0x5c
+#define SOR_DP_PADCTL_PAD_CAL_PD (1 << 23)
+#define SOR_DP_PADCTL_TX_PU_ENABLE (1 << 22)
+#define SOR_DP_PADCTL_TX_PU_MASK (0xff << 8)
+#define SOR_DP_PADCTL_TX_PU(x) (((x) & 0xff) << 8)
+#define SOR_DP_PADCTL_CM_TXD_3 (1 << 7)
+#define SOR_DP_PADCTL_CM_TXD_2 (1 << 6)
+#define SOR_DP_PADCTL_CM_TXD_1 (1 << 5)
+#define SOR_DP_PADCTL_CM_TXD_0 (1 << 4)
+#define SOR_DP_PADCTL_PD_TXD_3 (1 << 3)
+#define SOR_DP_PADCTL_PD_TXD_0 (1 << 2)
+#define SOR_DP_PADCTL_PD_TXD_1 (1 << 1)
+#define SOR_DP_PADCTL_PD_TXD_2 (1 << 0)
+
+#define SOR_DP_PADCTL_1 0x5d
+
+#define SOR_DP_DEBUG_0 0x5e
+#define SOR_DP_DEBUG_1 0x5f
+
+#define SOR_DP_SPARE_0 0x60
+#define SOR_DP_SPARE_MACRO_SOR_CLK (1 << 2)
+#define SOR_DP_SPARE_PANEL_INTERNAL (1 << 1)
+#define SOR_DP_SPARE_SEQ_ENABLE (1 << 0)
+
+#define SOR_DP_SPARE_1 0x61
+#define SOR_DP_AUDIO_CTRL 0x62
+
+#define SOR_DP_AUDIO_HBLANK_SYMBOLS 0x63
+#define SOR_DP_AUDIO_HBLANK_SYMBOLS_MASK (0x01ffff << 0)
+
+#define SOR_DP_AUDIO_VBLANK_SYMBOLS 0x64
+#define SOR_DP_AUDIO_VBLANK_SYMBOLS_MASK (0x1fffff << 0)
+
+#define SOR_DP_GENERIC_INFOFRAME_HEADER 0x65
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_0 0x66
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_1 0x67
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_2 0x68
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_3 0x69
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_4 0x6a
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_5 0x6b
+#define SOR_DP_GENERIC_INFOFRAME_SUBPACK_6 0x6c
+
+#define SOR_DP_TPG 0x6d
+#define SOR_DP_TPG_CHANNEL_CODING (1 << 6)
+#define SOR_DP_TPG_SCRAMBLER_MASK (3 << 4)
+#define SOR_DP_TPG_SCRAMBLER_FIBONACCI (2 << 4)
+#define SOR_DP_TPG_SCRAMBLER_GALIOS (1 << 4)
+#define SOR_DP_TPG_SCRAMBLER_NONE (0 << 4)
+#define SOR_DP_TPG_PATTERN_MASK (0xf << 0)
+#define SOR_DP_TPG_PATTERN_HBR2 (0x8 << 0)
+#define SOR_DP_TPG_PATTERN_CSTM (0x7 << 0)
+#define SOR_DP_TPG_PATTERN_PRBS7 (0x6 << 0)
+#define SOR_DP_TPG_PATTERN_SBLERRRATE (0x5 << 0)
+#define SOR_DP_TPG_PATTERN_D102 (0x4 << 0)
+#define SOR_DP_TPG_PATTERN_TRAIN3 (0x3 << 0)
+#define SOR_DP_TPG_PATTERN_TRAIN2 (0x2 << 0)
+#define SOR_DP_TPG_PATTERN_TRAIN1 (0x1 << 0)
+#define SOR_DP_TPG_PATTERN_NONE (0x0 << 0)
+
+#define SOR_DP_TPG_CONFIG 0x6e
+#define SOR_DP_LQ_CSTM_0 0x6f
+#define SOR_DP_LQ_CSTM_1 0x70
+#define SOR_DP_LQ_CSTM_2 0x71
+
+#endif
--
1.8.4.2
More information about the Intel-gfx
mailing list