[PATCH 3/8] drm/loongson: Allow attach drm bridge driver by calling lsdc_output_init()
Sui Jingfeng
suijingfeng at loongson.cn
Sun Oct 29 19:46:02 UTC 2023
Move the sharable subroutine into lsdc_output.c and refactor.
Signed-off-by: Sui Jingfeng <suijingfeng at loongson.cn>
---
drivers/gpu/drm/loongson/Makefile | 1 +
drivers/gpu/drm/loongson/lsdc_drv.h | 17 -
drivers/gpu/drm/loongson/lsdc_output.c | 640 +++++++++++++++++++++++++
drivers/gpu/drm/loongson/lsdc_output.h | 52 +-
4 files changed, 691 insertions(+), 19 deletions(-)
create mode 100644 drivers/gpu/drm/loongson/lsdc_output.c
diff --git a/drivers/gpu/drm/loongson/Makefile b/drivers/gpu/drm/loongson/Makefile
index 1459d19b2c90..393709e686aa 100644
--- a/drivers/gpu/drm/loongson/Makefile
+++ b/drivers/gpu/drm/loongson/Makefile
@@ -9,6 +9,7 @@ loongson-y := \
lsdc_gfxpll.o \
lsdc_i2c.o \
lsdc_irq.o \
+ lsdc_output.o \
lsdc_output_7a1000.o \
lsdc_output_7a2000.o \
lsdc_plane.o \
diff --git a/drivers/gpu/drm/loongson/lsdc_drv.h b/drivers/gpu/drm/loongson/lsdc_drv.h
index 335953c988d1..46ba9b88a30d 100644
--- a/drivers/gpu/drm/loongson/lsdc_drv.h
+++ b/drivers/gpu/drm/loongson/lsdc_drv.h
@@ -175,23 +175,6 @@ struct lsdc_cursor {
struct lsdc_device *ldev;
};
-struct lsdc_output {
- struct drm_encoder encoder;
- struct drm_connector connector;
-};
-
-static inline struct lsdc_output *
-connector_to_lsdc_output(struct drm_connector *connector)
-{
- return container_of(connector, struct lsdc_output, connector);
-}
-
-static inline struct lsdc_output *
-encoder_to_lsdc_output(struct drm_encoder *encoder)
-{
- return container_of(encoder, struct lsdc_output, encoder);
-}
-
struct lsdc_display_pipe {
struct lsdc_crtc crtc;
struct lsdc_primary primary;
diff --git a/drivers/gpu/drm/loongson/lsdc_output.c b/drivers/gpu/drm/loongson/lsdc_output.c
new file mode 100644
index 000000000000..8262c3f91ebe
--- /dev/null
+++ b/drivers/gpu/drm/loongson/lsdc_output.c
@@ -0,0 +1,640 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#include <linux/delay.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+
+#include "lsdc_drv.h"
+#include "lsdc_output.h"
+
+/* This file contain shared subroutines for the output part */
+
+/* Usable for generic DVO, VGA and buitl-in HDMI connector */
+
+static int lsdc_connector_get_modes(struct drm_connector *connector)
+{
+ unsigned int num = 0;
+ struct edid *edid;
+
+ if (connector->ddc) {
+ edid = drm_get_edid(connector, connector->ddc);
+ if (edid) {
+ drm_connector_update_edid_property(connector, edid);
+ num = drm_add_edid_modes(connector, edid);
+ kfree(edid);
+ }
+
+ return num;
+ }
+
+ num = drm_add_modes_noedid(connector, 1920, 1200);
+
+ drm_set_preferred_mode(connector, 1024, 768);
+
+ return num;
+}
+
+static struct drm_encoder *
+lsdc_connector_get_best_encoder(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ struct lsdc_output *output = connector_to_lsdc_output(connector);
+
+ return &output->encoder;
+}
+
+const struct drm_connector_helper_funcs lsdc_connector_helper_funcs = {
+ .atomic_best_encoder = lsdc_connector_get_best_encoder,
+ .get_modes = lsdc_connector_get_modes,
+};
+
+static enum drm_connector_status
+lsdc_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct i2c_adapter *ddc = connector->ddc;
+
+ if (ddc) {
+ if (drm_probe_ddc(ddc))
+ return connector_status_connected;
+
+ return connector_status_disconnected;
+ }
+
+ return connector_status_unknown;
+}
+
+const struct drm_connector_funcs lsdc_connector_funcs = {
+ .detect = lsdc_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state
+};
+
+/* debugfs */
+
+#define LSDC_HDMI_REG(i, reg) { \
+ .name = __stringify_1(LSDC_HDMI##i##_##reg##_REG), \
+ .offset = LSDC_HDMI##i##_##reg##_REG, \
+}
+
+static int lsdc_hdmi_regs_show(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *)m->private;
+ struct drm_device *ddev = node->minor->dev;
+ struct lsdc_device *ldev = to_lsdc(ddev);
+ const struct lsdc_reg32 *preg;
+
+ preg = (const struct lsdc_reg32 *)node->info_ent->data;
+
+ while (preg->name) {
+ u32 offset = preg->offset;
+
+ seq_printf(m, "%s (0x%04x): 0x%08x\n",
+ preg->name, offset, lsdc_rreg32(ldev, offset));
+ ++preg;
+ }
+
+ return 0;
+}
+
+/* LSDC built-in HDMI encoder, connected with display pipe 0 */
+
+static const struct lsdc_reg32 lsdc_hdmi_regs_pipe0[] = {
+ LSDC_HDMI_REG(0, ZONE),
+ LSDC_HDMI_REG(0, INTF_CTRL),
+ LSDC_HDMI_REG(0, PHY_CTRL),
+ LSDC_HDMI_REG(0, PHY_PLL),
+ LSDC_HDMI_REG(0, AVI_INFO_CRTL),
+ LSDC_HDMI_REG(0, PHY_CAL),
+ LSDC_HDMI_REG(0, AUDIO_PLL_LO),
+ LSDC_HDMI_REG(0, AUDIO_PLL_HI),
+ {NULL, 0}, /* MUST be {NULL, 0} terminated */
+};
+
+static const struct drm_info_list lsdc_pipe0_hdmi_debugfs_files[] = {
+ { "regs", lsdc_hdmi_regs_show, 0, (void *)lsdc_hdmi_regs_pipe0 },
+};
+
+static enum drm_connector_status
+lsdc_pipe0_hdmi_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct lsdc_device *ldev = to_lsdc(connector->dev);
+ u32 val;
+
+ val = lsdc_rreg32(ldev, LSDC_HDMI_HPD_STATUS_REG);
+
+ if (val & HDMI0_HPD_FLAG)
+ return connector_status_connected;
+
+ return connector_status_disconnected;
+}
+
+static void lsdc_pipe0_hdmi_late_register(struct drm_connector *connector,
+ struct dentry *root)
+{
+ struct drm_device *ddev = connector->dev;
+ struct drm_minor *minor = ddev->primary;
+
+ drm_debugfs_create_files(lsdc_pipe0_hdmi_debugfs_files,
+ ARRAY_SIZE(lsdc_pipe0_hdmi_debugfs_files),
+ root, minor);
+}
+
+const struct drm_connector_funcs lsdc_pipe0_hdmi_connector_funcs = {
+ .detect = lsdc_pipe0_hdmi_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ .debugfs_init = lsdc_pipe0_hdmi_late_register,
+};
+
+/* LSDC built-in HDMI connector, connected with display pipe 1 */
+
+static enum drm_connector_status
+lsdc_pipe1_hdmi_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct lsdc_device *ldev = to_lsdc(connector->dev);
+ u32 val;
+
+ val = lsdc_rreg32(ldev, LSDC_HDMI_HPD_STATUS_REG);
+
+ if (val & HDMI1_HPD_FLAG)
+ return connector_status_connected;
+
+ return connector_status_disconnected;
+}
+
+static const struct lsdc_reg32 lsdc_pipe1_hdmi_encoder_regs[] = {
+ LSDC_HDMI_REG(1, ZONE),
+ LSDC_HDMI_REG(1, INTF_CTRL),
+ LSDC_HDMI_REG(1, PHY_CTRL),
+ LSDC_HDMI_REG(1, PHY_PLL),
+ LSDC_HDMI_REG(1, AVI_INFO_CRTL),
+ LSDC_HDMI_REG(1, PHY_CAL),
+ LSDC_HDMI_REG(1, AUDIO_PLL_LO),
+ LSDC_HDMI_REG(1, AUDIO_PLL_HI),
+ {NULL, 0}, /* MUST be {NULL, 0} terminated */
+};
+
+static const struct drm_info_list lsdc_pipe1_hdmi_debugfs_files[] = {
+ { "regs", lsdc_hdmi_regs_show, 0, (void *)lsdc_pipe1_hdmi_encoder_regs },
+};
+
+static void lsdc_pipe1_hdmi_late_register(struct drm_connector *connector,
+ struct dentry *root)
+{
+ struct drm_device *ddev = connector->dev;
+ struct drm_minor *minor = ddev->primary;
+
+ drm_debugfs_create_files(lsdc_pipe1_hdmi_debugfs_files,
+ ARRAY_SIZE(lsdc_pipe1_hdmi_debugfs_files),
+ root, minor);
+}
+
+const struct drm_connector_funcs lsdc_pipe1_hdmi_connector_funcs = {
+ .detect = lsdc_pipe1_hdmi_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ .debugfs_init = lsdc_pipe1_hdmi_late_register,
+};
+
+/*
+ * Fout = M * in_khz
+ *
+ * M = (4 * LF) / (IDF * ODF)
+ *
+ * IDF: Input Division Factor
+ * ODF: Output Division Factor
+ * LF: Loop Factor
+ * M: Required Mult
+ *
+ * +--------------------------------------------------------+
+ * | in_khz | M | IDF | LF | ODF | Fout(Mhz) |
+ * |-------------------+----+-----+----+-----+--------------|
+ * | 170000 ~ 340000 | 10 | 16 | 40 | 1 | 1700 ~ 3400 |
+ * | 85000 ~ 170000 | 10 | 8 | 40 | 2 | 850 ~ 1700 |
+ * | 42500 ~ 85000 | 10 | 4 | 40 | 4 | 425 ~ 850 |
+ * | 21250 ~ 42500 | 10 | 2 | 40 | 8 | 212.5 ~ 425 |
+ * | 20000 ~ 21250 | 10 | 1 | 40 | 16 | 200 ~ 212.5 |
+ * +--------------------------------------------------------+
+ */
+static void lsdc_hdmi_phy_pll_config(struct drm_device *ddev,
+ int in_khz,
+ unsigned int pipe)
+{
+ struct lsdc_device *ldev = to_lsdc(ddev);
+ int count = 0;
+ u32 val;
+
+ /* Firstly, disable phy pll */
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_PHY_PLL_REG, pipe, 0x0);
+
+ /*
+ * Most of time, loongson HDMI require M = 10
+ * for example, 10 = (4 * 40) / (8 * 2)
+ * here, write "1" to the ODF will get "2"
+ */
+
+ if (in_khz >= 170000)
+ val = (16 << HDMI_PLL_IDF_SHIFT) |
+ (40 << HDMI_PLL_LF_SHIFT) |
+ (0 << HDMI_PLL_ODF_SHIFT);
+ else if (in_khz >= 85000)
+ val = (8 << HDMI_PLL_IDF_SHIFT) |
+ (40 << HDMI_PLL_LF_SHIFT) |
+ (1 << HDMI_PLL_ODF_SHIFT);
+ else if (in_khz >= 42500)
+ val = (4 << HDMI_PLL_IDF_SHIFT) |
+ (40 << HDMI_PLL_LF_SHIFT) |
+ (2 << HDMI_PLL_ODF_SHIFT);
+ else if (in_khz >= 21250)
+ val = (2 << HDMI_PLL_IDF_SHIFT) |
+ (40 << HDMI_PLL_LF_SHIFT) |
+ (3 << HDMI_PLL_ODF_SHIFT);
+ else
+ val = (1 << HDMI_PLL_IDF_SHIFT) |
+ (40 << HDMI_PLL_LF_SHIFT) |
+ (4 << HDMI_PLL_ODF_SHIFT);
+
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_PHY_PLL_REG, pipe, val);
+
+ val |= HDMI_PLL_ENABLE;
+
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_PHY_PLL_REG, pipe, val);
+
+ udelay(2);
+
+ drm_dbg(ddev, "Input frequency of HDMI-%u: %d kHz\n", pipe, in_khz);
+
+ /* Wait hdmi phy pll lock */
+ do {
+ val = lsdc_pipe_rreg32(ldev, LSDC_HDMI0_PHY_PLL_REG, pipe);
+
+ if (val & HDMI_PLL_LOCKED) {
+ drm_dbg(ddev, "Setting HDMI-%u PLL take %d cycles\n",
+ pipe, count);
+ break;
+ }
+ ++count;
+ } while (count < 1000);
+
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_PHY_CAL_REG, pipe, 0x0f000ff0);
+
+ if (count >= 1000)
+ drm_err(ddev, "Setting HDMI-%u PLL failed\n", pipe);
+}
+
+static int lsdc_hdmi_phy_set_avi_infoframe(struct drm_encoder *encoder,
+ struct drm_connector *connector,
+ struct drm_display_mode *mode,
+ unsigned int index)
+{
+ struct drm_device *ddev = encoder->dev;
+ struct lsdc_device *ldev = to_lsdc(ddev);
+ struct hdmi_avi_infoframe infoframe;
+ u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
+ unsigned char *ptr = &buffer[HDMI_INFOFRAME_HEADER_SIZE];
+ unsigned int content0, content1, content2, content3;
+ int err;
+
+ err = drm_hdmi_avi_infoframe_from_display_mode(&infoframe,
+ connector,
+ mode);
+ if (err < 0) {
+ drm_err(ddev, "failed to setup AVI infoframe: %d\n", err);
+ return err;
+ }
+
+ /* Fixed infoframe configuration not linked to the mode */
+ infoframe.colorspace = HDMI_COLORSPACE_RGB;
+ infoframe.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+ infoframe.colorimetry = HDMI_COLORIMETRY_NONE;
+
+ err = hdmi_avi_infoframe_pack(&infoframe, buffer, sizeof(buffer));
+ if (err < 0) {
+ drm_err(ddev, "failed to pack AVI infoframe: %d\n", err);
+ return err;
+ }
+
+ content0 = *(unsigned int *)ptr;
+ content1 = *(ptr + 4);
+ content2 = *(unsigned int *)(ptr + 5);
+ content3 = *(unsigned int *)(ptr + 9);
+
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_AVI_CONTENT0, index, content0);
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_AVI_CONTENT1, index, content1);
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_AVI_CONTENT2, index, content2);
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_AVI_CONTENT3, index, content3);
+
+ lsdc_pipe_wreg32(ldev, LSDC_HDMI0_AVI_INFO_CRTL_REG, index,
+ AVI_PKT_ENABLE | AVI_PKT_UPDATE);
+
+ drm_dbg(ddev, "Update HDMI-%u avi infoframe\n", index);
+
+ return 0;
+}
+
+/* Built-in HDMI encoder funcs on display pipe 0 */
+
+static void lsdc_pipe0_hdmi_encoder_reset(struct drm_encoder *encoder)
+{
+ struct drm_device *ddev = encoder->dev;
+ struct lsdc_device *ldev = to_lsdc(ddev);
+ u32 val;
+
+ val = PHY_CLOCK_POL | PHY_CLOCK_EN | PHY_DATA_EN;
+ lsdc_wreg32(ldev, LSDC_CRTC0_DVO_CONF_REG, val);
+
+ /* Using built-in GPIO emulated I2C instead of the hardware I2C */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI0_INTF_CTRL_REG, HW_I2C_EN);
+
+ /* Help the HDMI phy get out of reset state */
+ lsdc_wreg32(ldev, LSDC_HDMI0_PHY_CTRL_REG, HDMI_PHY_RESET_N);
+
+ drm_dbg(ddev, "%s reset\n", encoder->name);
+
+ mdelay(20);
+}
+
+const struct drm_encoder_funcs lsdc_pipe0_hdmi_encoder_funcs = {
+ .reset = lsdc_pipe0_hdmi_encoder_reset,
+ .destroy = drm_encoder_cleanup,
+};
+
+/* Built-in HDMI encoder funcs on display pipe 1 */
+
+static void lsdc_pipe1_hdmi_encoder_reset(struct drm_encoder *encoder)
+{
+ struct drm_device *ddev = encoder->dev;
+ struct lsdc_device *ldev = to_lsdc(ddev);
+ u32 val;
+
+ val = PHY_CLOCK_POL | PHY_CLOCK_EN | PHY_DATA_EN;
+ lsdc_wreg32(ldev, LSDC_CRTC1_DVO_CONF_REG, val);
+
+ /* Using built-in GPIO emulated I2C instead of the hardware I2C */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI1_INTF_CTRL_REG, HW_I2C_EN);
+
+ /* Help the HDMI phy get out of reset state */
+ lsdc_wreg32(ldev, LSDC_HDMI1_PHY_CTRL_REG, HDMI_PHY_RESET_N);
+
+ drm_dbg(ddev, "%s reset\n", encoder->name);
+
+ mdelay(20);
+}
+
+const struct drm_encoder_funcs lsdc_pipe1_hdmi_encoder_funcs = {
+ .reset = lsdc_pipe1_hdmi_encoder_reset,
+ .destroy = drm_encoder_cleanup,
+};
+
+/* Built-in DVO encoder helper funcs */
+
+static void lsdc_dvo_atomic_disable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+}
+
+static void lsdc_dvo_atomic_enable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+}
+
+static void lsdc_dvo_atomic_modeset(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+}
+
+const struct drm_encoder_helper_funcs lsdc_encoder_helper_funcs = {
+ .atomic_disable = lsdc_dvo_atomic_disable,
+ .atomic_enable = lsdc_dvo_atomic_enable,
+ .atomic_mode_set = lsdc_dvo_atomic_modeset,
+};
+
+/* Built-in HDMI encoder helper funcs on display pipe 0 */
+
+static void lsdc_pipe0_hdmi_atomic_disable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+ struct lsdc_device *ldev = to_lsdc(encoder->dev);
+
+ /* Disable the HDMI PHY */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI0_PHY_CTRL_REG, HDMI_PHY_EN);
+
+ /* Disable the HDMI interface */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI0_INTF_CTRL_REG, HDMI_INTERFACE_EN);
+}
+
+static void lsdc_pipe0_hdmi_atomic_enable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+ struct lsdc_device *ldev = to_lsdc(encoder->dev);
+ u32 val;
+
+ /* datasheet say it should larger than 48 */
+ val = 64 << HDMI_H_ZONE_IDLE_SHIFT | 64 << HDMI_V_ZONE_IDLE_SHIFT;
+ lsdc_wreg32(ldev, LSDC_HDMI0_ZONE_REG, val);
+
+ val = HDMI_PHY_TERM_STATUS |
+ HDMI_PHY_TERM_DET_EN |
+ HDMI_PHY_TERM_H_EN |
+ HDMI_PHY_TERM_L_EN |
+ HDMI_PHY_RESET_N |
+ HDMI_PHY_EN;
+ lsdc_wreg32(ldev, LSDC_HDMI0_PHY_CTRL_REG, val);
+
+ udelay(2);
+
+ val = HDMI_CTL_PERIOD_MODE |
+ HDMI_AUDIO_EN |
+ HDMI_PACKET_EN |
+ HDMI_INTERFACE_EN |
+ (8 << HDMI_VIDEO_PREAMBLE_SHIFT);
+ lsdc_wreg32(ldev, LSDC_HDMI0_INTF_CTRL_REG, val);
+}
+
+static void lsdc_pipe0_hdmi_atomic_modeset(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct lsdc_output *output = encoder_to_lsdc_output(encoder);
+ struct drm_device *ddev = encoder->dev;
+ struct drm_display_mode *mode = &crtc_state->mode;
+
+ lsdc_hdmi_phy_pll_config(ddev, mode->clock, 0);
+
+ lsdc_hdmi_phy_set_avi_infoframe(encoder, &output->connector, mode, 0);
+
+ drm_dbg(ddev, "%s modeset finished\n", encoder->name);
+}
+
+const struct drm_encoder_helper_funcs lsdc_pipe0_hdmi_encoder_helper_funcs = {
+ .atomic_disable = lsdc_pipe0_hdmi_atomic_disable,
+ .atomic_enable = lsdc_pipe0_hdmi_atomic_enable,
+ .atomic_mode_set = lsdc_pipe0_hdmi_atomic_modeset,
+};
+
+/* Built-in HDMI encoder helper funcs on display pipe 1 */
+
+static void lsdc_pipe1_hdmi_atomic_disable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+ struct lsdc_device *ldev = to_lsdc(encoder->dev);
+
+ /* Disable the HDMI PHY */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI1_PHY_CTRL_REG, HDMI_PHY_EN);
+
+ /* Disable the HDMI interface */
+ lsdc_ureg32_clr(ldev, LSDC_HDMI1_INTF_CTRL_REG, HDMI_INTERFACE_EN);
+}
+
+static void lsdc_pipe1_hdmi_atomic_enable(struct drm_encoder *encoder,
+ struct drm_atomic_state *state)
+{
+ struct lsdc_device *ldev = to_lsdc(encoder->dev);
+ u32 val;
+
+ /* datasheet say it should larger than 48 */
+ val = 64 << HDMI_H_ZONE_IDLE_SHIFT | 64 << HDMI_V_ZONE_IDLE_SHIFT;
+ lsdc_wreg32(ldev, LSDC_HDMI1_ZONE_REG, val);
+
+ val = HDMI_PHY_TERM_STATUS |
+ HDMI_PHY_TERM_DET_EN |
+ HDMI_PHY_TERM_H_EN |
+ HDMI_PHY_TERM_L_EN |
+ HDMI_PHY_RESET_N |
+ HDMI_PHY_EN;
+ lsdc_wreg32(ldev, LSDC_HDMI1_PHY_CTRL_REG, val);
+
+ udelay(2);
+
+ val = HDMI_CTL_PERIOD_MODE |
+ HDMI_AUDIO_EN |
+ HDMI_PACKET_EN |
+ HDMI_INTERFACE_EN |
+ (8 << HDMI_VIDEO_PREAMBLE_SHIFT);
+ lsdc_wreg32(ldev, LSDC_HDMI1_INTF_CTRL_REG, val);
+}
+
+static void lsdc_pipe1_hdmi_atomic_modeset(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct lsdc_output *output = encoder_to_lsdc_output(encoder);
+ struct drm_device *ddev = encoder->dev;
+ struct drm_display_mode *mode = &crtc_state->mode;
+
+ lsdc_hdmi_phy_pll_config(ddev, mode->clock, 1);
+
+ lsdc_hdmi_phy_set_avi_infoframe(encoder, &output->connector, mode, 1);
+
+ drm_dbg(ddev, "%s modeset finished\n", encoder->name);
+}
+
+const struct drm_encoder_helper_funcs lsdc_pipe1_hdmi_encoder_helper_funcs = {
+ .atomic_disable = lsdc_pipe1_hdmi_atomic_disable,
+ .atomic_enable = lsdc_pipe1_hdmi_atomic_enable,
+ .atomic_mode_set = lsdc_pipe1_hdmi_atomic_modeset,
+};
+
+int lsdc_encoder_init(struct drm_device *ddev,
+ struct lsdc_output *output,
+ unsigned int pipe)
+{
+ const struct lsdc_output_desc *descp = output->descp;
+ struct drm_encoder *encoder = &output->encoder;
+ int ret;
+
+ ret = drm_encoder_init(ddev,
+ encoder,
+ descp->encoder_funcs,
+ descp->encoder_type,
+ descp->name);
+ if (ret)
+ return ret;
+
+ encoder->possible_crtcs = BIT(pipe);
+
+ drm_encoder_helper_add(encoder, descp->encoder_helper_funcs);
+
+ return 0;
+}
+
+int lsdc_connector_init(struct drm_device *ddev,
+ struct lsdc_output *output,
+ struct i2c_adapter *ddc,
+ unsigned int pipe)
+{
+ const struct lsdc_output_desc *descp = output->descp;
+ struct drm_connector *connector = &output->connector;
+ int ret;
+
+ ret = drm_connector_init_with_ddc(ddev,
+ connector,
+ descp->connector_funcs,
+ descp->connector_type,
+ ddc);
+ if (ret)
+ return ret;
+
+ drm_connector_helper_add(connector, descp->connector_helper_funcs);
+
+ drm_connector_attach_encoder(connector, &output->encoder);
+
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+ DRM_CONNECTOR_POLL_DISCONNECT;
+
+ connector->interlace_allowed = 0;
+ connector->doublescan_allowed = 0;
+
+ drm_info(ddev, "DisplayPipe-%u has %s\n", pipe, descp->name);
+
+ return 0;
+}
+
+/*
+ * A common, sharable subroutine for the initialization of output part.
+ * If there is external non-transparent display bridge chip on the display
+ * pipe, we will attach it. Otherwise, the output is simple, we will just
+ * initial a connector for it.
+ */
+int lsdc_output_init(struct drm_device *ddev,
+ struct lsdc_display_pipe *dispipe,
+ struct i2c_adapter *ddc,
+ unsigned int pipe)
+{
+ struct lsdc_output *output = &dispipe->output;
+ int ret;
+
+ ret = lsdc_encoder_init(ddev, output, pipe);
+ if (ret)
+ return ret;
+
+ if (output->bridge) {
+ ret = drm_bridge_attach(&output->encoder, output->bridge,
+ NULL, 0);
+ if (ret) {
+ drm_err(ddev, "Attach display bridge failed\n");
+ ret = lsdc_connector_init(ddev, output, ddc, pipe);
+ }
+ } else {
+ ret = lsdc_connector_init(ddev, output, ddc, pipe);
+ }
+
+ return ret;
+}
diff --git a/drivers/gpu/drm/loongson/lsdc_output.h b/drivers/gpu/drm/loongson/lsdc_output.h
index 097789051a1d..a37a72687bdf 100644
--- a/drivers/gpu/drm/loongson/lsdc_output.h
+++ b/drivers/gpu/drm/loongson/lsdc_output.h
@@ -6,16 +6,64 @@
#ifndef __LSDC_OUTPUT_H__
#define __LSDC_OUTPUT_H__
-#include "lsdc_drv.h"
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_encoder.h>
+
+struct lsdc_output_desc {
+ u32 pipe;
+ u32 encoder_type;
+ u32 connector_type;
+ const struct drm_encoder_funcs *encoder_funcs;
+ const struct drm_encoder_helper_funcs *encoder_helper_funcs;
+ const struct drm_connector_funcs *connector_funcs;
+ const struct drm_connector_helper_funcs *connector_helper_funcs;
+ const char name[32];
+};
+
+struct lsdc_output {
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+ struct drm_bridge *bridge;
+ const struct lsdc_output_desc *descp;
+};
+
+static inline struct lsdc_output *
+connector_to_lsdc_output(struct drm_connector *connector)
+{
+ return container_of(connector, struct lsdc_output, connector);
+}
+
+static inline struct lsdc_output *
+encoder_to_lsdc_output(struct drm_encoder *encoder)
+{
+ return container_of(encoder, struct lsdc_output, encoder);
+}
+
+extern const struct drm_connector_funcs lsdc_connector_funcs;
+extern const struct drm_connector_funcs lsdc_pipe0_hdmi_connector_funcs;
+extern const struct drm_connector_funcs lsdc_pipe1_hdmi_connector_funcs;
+extern const struct drm_connector_helper_funcs lsdc_connector_helper_funcs;
+
+extern const struct drm_encoder_funcs lsdc_pipe0_hdmi_encoder_funcs;
+extern const struct drm_encoder_funcs lsdc_pipe1_hdmi_encoder_funcs;
+extern const struct drm_encoder_helper_funcs lsdc_encoder_helper_funcs;
+extern const struct drm_encoder_helper_funcs lsdc_pipe0_hdmi_encoder_helper_funcs;
+extern const struct drm_encoder_helper_funcs lsdc_pipe1_hdmi_encoder_helper_funcs;
int ls7a1000_output_init(struct drm_device *ddev,
struct lsdc_display_pipe *dispipe,
struct i2c_adapter *ddc,
unsigned int index);
-int ls7a2000_output_init(struct drm_device *ldev,
+int ls7a2000_output_init(struct drm_device *ddev,
struct lsdc_display_pipe *dispipe,
struct i2c_adapter *ddc,
unsigned int index);
+int lsdc_output_init(struct drm_device *ddev,
+ struct lsdc_display_pipe *dispipe,
+ struct i2c_adapter *ddc,
+ unsigned int pipe);
+
#endif
--
2.34.1
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