This change adds the support in mdp5 kms driver for single
and dual DSI. Dual DSI case depends on the framework API
and sequence change to support dual data path.
Signed-off-by: Hai Li <hali@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c | 4 +
drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 11 +-
drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c | 268 +++++++++++++++++++++++++++-
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 69 ++++++-
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h | 12 +-
drivers/gpu/drm/msm/msm_drv.c | 2 +
6 files changed, 353 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
index 6c467fb..2c9a9dc 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c
@@ -68,6 +68,8 @@ const struct mdp5_cfg_hw msm8x74_config = {
},
.intfs = {
[0] = INTF_eDP,
+ [1] = INTF_DSI,
+ [2] = INTF_DSI,
[3] = INTF_HDMI,
},
.max_clk = 200000000,
@@ -125,6 +127,8 @@ const struct mdp5_cfg_hw apq8084_config = {
},
.intfs = {
[0] = INTF_eDP,
+ [1] = INTF_DSI,
+ [2] = INTF_DSI,
[3] = INTF_HDMI,
},
.max_clk = 320000000,
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index 9b38cde..f877e1d 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -626,7 +626,16 @@ void mdp5_crtc_set_intf(struct drm_crtc *crtc, struct mdp5_interface *intf)
/* now that we know what irq's we want: */
mdp5_crtc->err.irqmask = intf2err(intf->num);
- mdp5_crtc->vblank.irqmask = intf2vblank(lm, intf);
+
+ /* Register command mode Pingpong done as vblank for now,
+ * so that atomic commit should wait for it to finish.
+ * Ideally, in the future, we should take rd_ptr done as vblank,
+ * and let atomic commit wait for pingpong done for commond mode.
+ */
+ if (intf->mode == MDP5_INTF_DSI_MODE_COMMAND)
+ mdp5_crtc->vblank.irqmask = lm2ppdone(lm);
+ else
+ mdp5_crtc->vblank.irqmask = intf2vblank(lm, intf);
mdp_irq_update(&mdp5_kms->base);
mdp5_ctl_set_intf(mdp5_crtc->ctl, intf);
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c
index a17eb9c..efe7aaf 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c
@@ -98,6 +98,221 @@ static void bs_fini(struct mdp5_encoder *mdp5_encoder) {}
static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) {}
#endif
+/*
+ * Command mode encoder, used by DSI command mode path.
+ * Should move to a separate file, once global bandwidth
+ * functions are available.
+ */
+#define VSYNC_CLK_RATE 19200000
+static int pingpong_tearcheck_setup(struct drm_encoder *encoder,
+ struct drm_display_mode *mode)
+{
+ struct mdp5_kms *mdp5_kms = get_kms(encoder);
+ struct device *dev = encoder->dev->dev;
+ u32 total_lines_x100, vclks_line, cfg;
+ long vsync_clk_speed;
+ int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc));
+
+ if (IS_ERR_OR_NULL(mdp5_kms->vsync_clk)) {
+ dev_err(dev, "vsync_clk is not initialized\n");
+ return -EINVAL;
+ }
+
+ total_lines_x100 = mode->vtotal * mode->vrefresh;
+ if (!total_lines_x100) {
+ dev_err(dev, "%s: vtotal(%d) or vrefresh(%d) is 0\n",
+ __func__, mode->vtotal, mode->vrefresh);
+ return -EINVAL;
+ }
+
+ vsync_clk_speed = clk_round_rate(mdp5_kms->vsync_clk, VSYNC_CLK_RATE);
+ if (vsync_clk_speed <= 0) {
+ dev_err(dev, "vsync_clk round rate failed %ld\n",
+ vsync_clk_speed);
+ return -EINVAL;
+ }
+ vclks_line = vsync_clk_speed * 100 / total_lines_x100;
+
+ cfg = MDP5_PP_SYNC_CONFIG_VSYNC_COUNTER_EN
+ | MDP5_PP_SYNC_CONFIG_VSYNC_IN_EN;
+ cfg |= MDP5_PP_SYNC_CONFIG_VSYNC_COUNT(vclks_line);
+
+ mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_CONFIG_VSYNC(pp_id), cfg);
+ mdp5_write(mdp5_kms,
+ REG_MDP5_PP_SYNC_CONFIG_HEIGHT(pp_id), 0xfff0);
+ mdp5_write(mdp5_kms,
+ REG_MDP5_PP_VSYNC_INIT_VAL(pp_id), mode->vdisplay);
+ mdp5_write(mdp5_kms, REG_MDP5_PP_RD_PTR_IRQ(pp_id), mode->vdisplay + 1);
+ mdp5_write(mdp5_kms, REG_MDP5_PP_START_POS(pp_id), mode->vdisplay);
+ mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_THRESH(pp_id),
+ MDP5_PP_SYNC_THRESH_START(4) |
+ MDP5_PP_SYNC_THRESH_CONTINUE(4));
+
+ return 0;
+}
+
+static int pingpong_tearcheck_enable(struct drm_encoder *encoder)
+{
+ struct mdp5_kms *mdp5_kms = get_kms(encoder);
+ int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc));
+ int ret;
+
+ ret = clk_set_rate(mdp5_kms->vsync_clk,
+ clk_round_rate(mdp5_kms->vsync_clk, VSYNC_CLK_RATE));
+ if (ret) {
+ dev_err(encoder->dev->dev,
+ "vsync_clk clk_set_rate failed, %d\n", ret);
+ return ret;
+ }
+ ret = clk_prepare_enable(mdp5_kms->vsync_clk);
+ if (ret) {
+ dev_err(encoder->dev->dev,
+ "vsync_clk clk_prepare_enable failed, %d\n", ret);
+ return ret;
+ }
+
+ mdp5_write(mdp5_kms, REG_MDP5_PP_TEAR_CHECK_EN(pp_id), 1);
+
+ return 0;
+}
+
+static void pingpong_tearcheck_disable(struct drm_encoder *encoder)
+{
+ struct mdp5_kms *mdp5_kms = get_kms(encoder);
+ int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc));
+
+ mdp5_write(mdp5_kms, REG_MDP5_PP_TEAR_CHECK_EN(pp_id), 0);
+ clk_disable_unprepare(mdp5_kms->vsync_clk);
+}
+
+static void mdp5_cmd_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+ bs_fini(mdp5_encoder);
+ drm_encoder_cleanup(encoder);
+ kfree(mdp5_encoder);
+}
+
+static const struct drm_encoder_funcs mdp5_cmd_encoder_funcs = {
+ .destroy = mdp5_cmd_encoder_destroy,
+};
+
+static bool mdp5_cmd_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void mdp5_cmd_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+
+ mode = adjusted_mode;
+
+ DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
+ mode->base.id, mode->name,
+ mode->vrefresh, mode->clock,
+ mode->hdisplay, mode->hsync_start,
+ mode->hsync_end, mode->htotal,
+ mode->vdisplay, mode->vsync_start,
+ mode->vsync_end, mode->vtotal,
+ mode->type, mode->flags);
+ pingpong_tearcheck_setup(encoder, mode);
+ mdp5_crtc_set_intf(encoder->crtc, &mdp5_encoder->intf);
+}
+
+static void mdp5_cmd_encoder_disable(struct drm_encoder *encoder)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+ struct mdp5_kms *mdp5_kms = get_kms(encoder);
+ struct mdp5_ctl *ctl = mdp5_crtc_get_ctl(encoder->crtc);
+ struct mdp5_interface *intf = &mdp5_encoder->intf;
+ int lm = mdp5_crtc_get_lm(encoder->crtc);
+
+ if (WARN_ON(!mdp5_encoder->enabled))
+ return;
+
+ /* Wait for the last frame done */
+ mdp_irq_wait(&mdp5_kms->base, lm2ppdone(lm));
+ pingpong_tearcheck_disable(encoder);
+
+ mdp5_ctl_set_encoder_state(ctl, false);
+ mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf));
+
+ bs_set(mdp5_encoder, 0);
+
+ mdp5_encoder->enabled = false;
+}
+
+static void mdp5_cmd_encoder_enable(struct drm_encoder *encoder)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+ struct mdp5_ctl *ctl = mdp5_crtc_get_ctl(encoder->crtc);
+ struct mdp5_interface *intf = &mdp5_encoder->intf;
+
+ if (WARN_ON(mdp5_encoder->enabled))
+ return;
+
+ bs_set(mdp5_encoder, 1);
+ if (pingpong_tearcheck_enable(encoder))
+ return;
+
+ mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf));
+
+ mdp5_ctl_set_encoder_state(ctl, true);
+
+ mdp5_encoder->enabled = true;
+}
+
+static const struct drm_encoder_helper_funcs mdp5_cmd_encoder_helper_funcs = {
+ .mode_fixup = mdp5_cmd_encoder_mode_fixup,
+ .mode_set = mdp5_cmd_encoder_mode_set,
+ .disable = mdp5_cmd_encoder_disable,
+ .enable = mdp5_cmd_encoder_enable,
+};
+
+int mdp5_cmd_encoder_set_split_display(struct drm_encoder *encoder,
+ struct drm_encoder *slave_encoder)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+ struct mdp5_kms *mdp5_kms;
+ int intf_num;
+ u32 data = 0;
+
+ if (!encoder || !slave_encoder)
+ return -EINVAL;
+
+ mdp5_kms = get_kms(encoder);
+ intf_num = mdp5_encoder->intf.num;
+
+ /* Switch slave encoder's trigger MUX, to use the master's
+ * start signal for the slave encoder
+ */
+ if (intf_num == 1)
+ data |= MDP5_SPLIT_DPL_UPPER_INTF2_SW_TRG_MUX;
+ else if (intf_num == 2)
+ data |= MDP5_SPLIT_DPL_UPPER_INTF1_SW_TRG_MUX;
+ else
+ return -EINVAL;
+
+ /* Smart Panel, Sync mode */
+ data |= MDP5_SPLIT_DPL_UPPER_SMART_PANEL;
+
+ /* Make sure clocks are on when connectors calling this function. */
+ mdp5_enable(mdp5_kms);
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_UPPER, data);
+
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_LOWER,
+ MDP5_SPLIT_DPL_LOWER_SMART_PANEL);
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_EN, 1);
+ mdp5_disable(mdp5_kms);
+
+ return 0;
+}
+
static void mdp5_encoder_destroy(struct drm_encoder *encoder)
{
struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
@@ -286,12 +501,59 @@ static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = {
.enable = mdp5_encoder_enable,
};
+int mdp5_encoder_set_split_display(struct drm_encoder *encoder,
+ struct drm_encoder *slave_encoder)
+{
+ struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
+ struct mdp5_kms *mdp5_kms;
+ int intf_num;
+ u32 data = 0;
+
+ if (!encoder || !slave_encoder)
+ return -EINVAL;
+
+ mdp5_kms = get_kms(encoder);
+ intf_num = mdp5_encoder->intf.num;
+
+ mdp5_write(mdp5_kms, REG_MDP5_SPARE_0,
+ MDP5_SPARE_0_SPLIT_DPL_SINGLE_FLUSH_EN);
+
+ /* Switch slave encoder's TimingGen Sync mode,
+ * to use the master's enable signal for the slave encoder.
+ */
+ if (intf_num == 1)
+ data |= MDP5_SPLIT_DPL_LOWER_INTF2_TG_SYNC;
+ else if (intf_num == 2)
+ data |= MDP5_SPLIT_DPL_LOWER_INTF1_TG_SYNC;
+ else
+ return -EINVAL;
+
+ /* Make sure clocks are on when connectors calling this function. */
+ mdp5_enable(mdp5_kms);
+ /* Dumb Panel, Sync mode */
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_UPPER, 0);
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_LOWER, data);
+ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_EN, 1);
+ mdp5_disable(mdp5_kms);
+
+ return 0;
+}
+
/* initialize encoder */
struct drm_encoder *mdp5_encoder_init(struct drm_device *dev,
struct mdp5_interface *intf)
{
struct drm_encoder *encoder = NULL;
struct mdp5_encoder *mdp5_encoder;
+ const struct drm_encoder_funcs *funcs =
+ (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) ?
+ (&mdp5_cmd_encoder_funcs) : (&mdp5_encoder_funcs);
+ const struct drm_encoder_helper_funcs *helper_funcs =
+ (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) ?
+ (&mdp5_cmd_encoder_helper_funcs) : (&mdp5_encoder_helper_funcs);
+ int enc_type = (intf->type == INTF_DSI) ?
+ DRM_MODE_ENCODER_DSI : DRM_MODE_ENCODER_TMDS;
+
int ret;
mdp5_encoder = kzalloc(sizeof(*mdp5_encoder), GFP_KERNEL);
@@ -305,9 +567,9 @@ struct drm_encoder *mdp5_encoder_init(struct drm_device *dev,
spin_lock_init(&mdp5_encoder->intf_lock);
- drm_encoder_init(dev, encoder, &mdp5_encoder_funcs,
- DRM_MODE_ENCODER_TMDS);
- drm_encoder_helper_add(encoder, &mdp5_encoder_helper_funcs);
+ drm_encoder_init(dev, encoder, funcs, enc_type);
+
+ drm_encoder_helper_add(encoder, helper_funcs);
bs_init(mdp5_encoder);
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index e5fd332..dfc3d38 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -88,6 +88,18 @@ static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,
return rate;
}
+static int mdp5_set_split_display(struct msm_kms *kms,
+ struct drm_encoder *encoder,
+ struct drm_encoder *slave_encoder,
+ bool is_cmd_mode)
+{
+ if (is_cmd_mode)
+ return mdp5_cmd_encoder_set_split_display(encoder,
+ slave_encoder);
+ else
+ return mdp5_encoder_set_split_display(encoder, slave_encoder);
+}
+
static void mdp5_preclose(struct msm_kms *kms, struct drm_file *file)
{
struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
@@ -133,6 +145,7 @@ static const struct mdp_kms_funcs kms_funcs = {
.complete_commit = mdp5_complete_commit,
.get_format = mdp_get_format,
.round_pixclk = mdp5_round_pixclk,
+ .set_split_display = mdp5_set_split_display,
.preclose = mdp5_preclose,
.destroy = mdp5_destroy,
},
@@ -163,6 +176,24 @@ int mdp5_enable(struct mdp5_kms *mdp5_kms)
return 0;
}
+static int get_dsi_id_from_intf(const struct mdp5_cfg_hw *hw_cfg, int intf_num)
+{
+ const int intf_cnt = hw_cfg->intf.count;
+ const u32 *intfs = hw_cfg->intfs;
+ int id = 0, i;
+
+ for (i = 0; i < intf_cnt; i++) {
+ if (intfs[i] == INTF_DSI) {
+ if (intf_num == i)
+ return id;
+
+ id++;
+ }
+ }
+
+ return -EINVAL;
+}
+
static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
enum mdp5_intf_type intf_type, int intf_num,
enum mdp5_intf_mode intf_mode)
@@ -254,6 +285,7 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
enum mdp5_intf_mode intf_mode = MDP5_INTF_MODE_NONE;
struct msm_drm_sub_dev *sub_dev;
struct drm_encoder *encoder;
+ int encoder_num = 1, j;
switch (intf_type) {
case INTF_DISABLED:
@@ -265,6 +297,23 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
case INTF_HDMI:
sub_dev = priv->hdmi;
break;
+ case INTF_DSI:
+ {
+ int dsi_id = get_dsi_id_from_intf(hw_cfg, i);
+
+ if ((dsi_id >= ARRAY_SIZE(priv->dsi)) ||
+ (dsi_id < 0)) {
+ dev_err(dev->dev,
+ "failed to find dsi id from intf %d\n",
+ i);
+ ret = -EINVAL;
+ goto fail;
+ }
+ sub_dev = priv->dsi[dsi_id];
+ encoder_num = MSM_DSI_ENCODER_NUM;
+
+ break;
+ }
default:
dev_err(dev->dev, "unknown intf: %d\n", intf_type);
ret = -EINVAL;
@@ -272,14 +321,20 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
}
if (sub_dev) {
- encoder = construct_encoder(mdp5_kms, intf_type,
- i, intf_mode);
- if (IS_ERR(encoder)) {
- ret = PTR_ERR(encoder);
- goto fail;
+ for (j = 0; j < encoder_num; j++) {
+ if (MSM_DSI_CMD_ENCODER_ID == j)
+ intf_mode = MDP5_INTF_DSI_MODE_COMMAND;
+
+ encoder = construct_encoder(mdp5_kms, intf_type,
+ i, intf_mode);
+ if (IS_ERR(encoder)) {
+ ret = PTR_ERR(encoder);
+ goto fail;
+ }
+
+ sub_dev->encoders[sub_dev->num_encoders++] =
+ encoder;
}
-
- sub_dev->encoders[sub_dev->num_encoders++] = encoder;
ret = sub_dev->modeset_init(sub_dev, dev);
if (ret)
goto fail;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
index 690edfd..3ef2ff6 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
@@ -159,10 +159,9 @@ static inline uint32_t intf2err(int intf_num)
}
}
+#define GET_PING_PONG_ID(layer_mixer) ((layer_mixer == 5) ? 3 : layer_mixer)
static inline uint32_t intf2vblank(int lm, struct mdp5_interface *intf)
{
-#define GET_PING_PONG_ID(layer_mixer) ((layer_mixer == 5) ? 3 : layer_mixer)
-
/*
* In case of DSI Command Mode, the Ping Pong's read pointer IRQ
* acts as a Vblank signal. The Ping Pong buffer used is bound to
@@ -185,6 +184,11 @@ static inline uint32_t intf2vblank(int lm, struct mdp5_interface *intf)
}
}
+static inline uint32_t lm2ppdone(int lm)
+{
+ return MDP5_IRQ_PING_PONG_0_DONE << GET_PING_PONG_ID(lm);
+}
+
int mdp5_disable(struct mdp5_kms *mdp5_kms);
int mdp5_enable(struct mdp5_kms *mdp5_kms);
@@ -236,6 +240,10 @@ void mdp5_crtc_set_intf(struct drm_crtc *crtc, struct mdp5_interface *intf);
struct drm_crtc *mdp5_crtc_init(struct drm_device *dev,
struct drm_plane *plane, int id);
+int mdp5_cmd_encoder_set_split_display(struct drm_encoder *encoder,
+ struct drm_encoder *slave_encoder);
+int mdp5_encoder_set_split_display(struct drm_encoder *encoder,
+ struct drm_encoder *slave_encoder);
struct drm_encoder *mdp5_encoder_init(struct drm_device *dev,
struct mdp5_interface *intf);
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index dfd583f..bc61c34 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1030,6 +1030,7 @@ static struct platform_driver msm_platform_driver = {
static int __init msm_drm_register(void)
{
DBG("init");
+ msm_dsi_register();
msm_edp_register();
hdmi_register();
adreno_register();
@@ -1043,6 +1044,7 @@ static void __exit msm_drm_unregister(void)
hdmi_unregister();
adreno_unregister();
msm_edp_unregister();
+ msm_dsi_unregister();
}
module_init(msm_drm_register);
--
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