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authorDave Airlie <airlied@redhat.com>2013-12-23 10:46:07 +1000
committerDave Airlie <airlied@redhat.com>2013-12-23 10:46:07 +1000
commit859ae233cd0ee76b6143f948ba1cb6b0b4c342f8 (patch)
treeb2071654cf0ef520e047035720a101d3222e47bc /drivers/gpu/drm/i915/intel_dsi.c
parent785e15ecefbfe8ea311ae320fdacd482a84b3cc3 (diff)
parentab57fff1302c485d74992d34df24ccb5efda244e (diff)
downloadlinaro-lsk-859ae233cd0ee76b6143f948ba1cb6b0b4c342f8.tar.gz
Merge tag 'drm-intel-next-2013-12-13' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
- fbc1 improvements from Ville (pre-gm45). - vlv forcewake improvements from Deepak S. - Some corner-cases fixes from Mika for the context hang stat code. - pc8 improvements and prep work for runtime D3 from Paulo, almost ready for primetime. - gen2 dpll fixes from Ville. - DSI improvements from Shobhit Kumar. - A few smaller fixes and improvements all over. [airlied: intel_ddi.c conflict fixed up] * tag 'drm-intel-next-2013-12-13' of git://people.freedesktop.org/~danvet/drm-intel: (61 commits) drm/i915/bdw: Implement ff workarounds drm/i915/bdw: Force all Data Cache Data Port access to be Non-Coherent drm/i915/bdw: Don't use forcewake needlessly drm/i915: Clear out old GT FIFO errors in intel_uncore_early_sanitize() drm/i915: dont call irq_put when irq test is on drm/i915: Rework the FBC interval/stall stuff a bit drm/i915: Enable FBC for all mobile gen2 and gen3 platforms drm/i915: FBC_CONTROL2 is gen4 only drm/i915: Gen2 FBC1 CFB pitch wants 32B units drm/i915: split intel_ddi_pll_mode_set in 2 pieces drm/i915: Fix timeout with missed interrupts in __wait_seqno drm/i915: touch VGA MSR after we enable the power well drm/i915: extract hsw_power_well_post_{enable, disable} drm/i915: remove i915_disable_vga_mem declaration drm/i915: Parametrize the dphy and other spec specific parameters drm/i915: Remove redundant DSI PLL enabling drm/i915: Reorganize the DSI enable/disable sequence drm/i915: Try harder to get best m, n, p values with minimal error drm/i915: Compute dsi_clk from pixel clock drm/i915: Use FLISDSI interface for band gap reset ... Conflicts: drivers/gpu/drm/i915/intel_ddi.c
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dsi.c188
1 files changed, 102 insertions, 86 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 7b9b350d29a..fabbf0d895c 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -37,49 +37,18 @@
static const struct intel_dsi_device intel_dsi_devices[] = {
};
-
-static void vlv_cck_modify(struct drm_i915_private *dev_priv, u32 reg, u32 val,
- u32 mask)
-{
- u32 tmp = vlv_cck_read(dev_priv, reg);
- tmp &= ~mask;
- tmp |= val;
- vlv_cck_write(dev_priv, reg, tmp);
-}
-
-static void band_gap_wa(struct drm_i915_private *dev_priv)
+static void band_gap_reset(struct drm_i915_private *dev_priv)
{
mutex_lock(&dev_priv->dpio_lock);
- /* Enable bandgap fix in GOP driver */
- vlv_cck_modify(dev_priv, 0x6D, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6E, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6F, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x00, 0x00008000, 0x00008000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x00, 0x00000000, 0x00008000);
- msleep(20);
-
- /* Turn Display Trunk on */
- vlv_cck_modify(dev_priv, 0x6B, 0x00020000, 0x00030000);
- msleep(20);
-
- vlv_cck_modify(dev_priv, 0x6C, 0x00020000, 0x00030000);
- msleep(20);
-
- vlv_cck_modify(dev_priv, 0x6D, 0x00020000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6E, 0x00020000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6F, 0x00020000, 0x00030000);
+ vlv_flisdsi_write(dev_priv, 0x08, 0x0001);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0005);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0025);
+ udelay(150);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0000);
+ vlv_flisdsi_write(dev_priv, 0x08, 0x0000);
mutex_unlock(&dev_priv->dpio_lock);
-
- /* Need huge delay, otherwise clock is not stable */
- msleep(100);
}
static struct intel_dsi *intel_attached_dsi(struct drm_connector *connector)
@@ -132,14 +101,47 @@ static void intel_dsi_pre_pll_enable(struct intel_encoder *encoder)
vlv_enable_dsi_pll(encoder);
}
+static void intel_dsi_device_ready(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+ int pipe = intel_crtc->pipe;
+ u32 val;
+
+ DRM_DEBUG_KMS("\n");
+
+ val = I915_READ(MIPI_PORT_CTRL(pipe));
+ I915_WRITE(MIPI_PORT_CTRL(pipe), val | LP_OUTPUT_HOLD);
+ usleep_range(1000, 1500);
+ I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_EXIT);
+ usleep_range(2000, 2500);
+ I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY);
+ usleep_range(2000, 2500);
+ I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00);
+ usleep_range(2000, 2500);
+ I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY);
+ usleep_range(2000, 2500);
+}
static void intel_dsi_pre_enable(struct intel_encoder *encoder)
{
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+
DRM_DEBUG_KMS("\n");
+
+ if (intel_dsi->dev.dev_ops->panel_reset)
+ intel_dsi->dev.dev_ops->panel_reset(&intel_dsi->dev);
+
+ /* put device in ready state */
+ intel_dsi_device_ready(encoder);
+
+ if (intel_dsi->dev.dev_ops->send_otp_cmds)
+ intel_dsi->dev.dev_ops->send_otp_cmds(&intel_dsi->dev);
}
static void intel_dsi_enable(struct intel_encoder *encoder)
{
- struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
int pipe = intel_crtc->pipe;
@@ -147,41 +149,28 @@ static void intel_dsi_enable(struct intel_encoder *encoder)
DRM_DEBUG_KMS("\n");
- temp = I915_READ(MIPI_DEVICE_READY(pipe));
- if ((temp & DEVICE_READY) == 0) {
- temp &= ~ULPS_STATE_MASK;
- I915_WRITE(MIPI_DEVICE_READY(pipe), temp | DEVICE_READY);
- } else if (temp & ULPS_STATE_MASK) {
- temp &= ~ULPS_STATE_MASK;
- I915_WRITE(MIPI_DEVICE_READY(pipe), temp | ULPS_STATE_EXIT);
- /*
- * We need to ensure that there is a minimum of 1 ms time
- * available before clearing the UPLS exit state.
- */
- msleep(2);
- I915_WRITE(MIPI_DEVICE_READY(pipe), temp);
- }
-
if (is_cmd_mode(intel_dsi))
I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(pipe), 8 * 4);
-
- if (is_vid_mode(intel_dsi)) {
+ else {
msleep(20); /* XXX */
dpi_send_cmd(intel_dsi, TURN_ON);
msleep(100);
/* assert ip_tg_enable signal */
- temp = I915_READ(MIPI_PORT_CTRL(pipe));
+ temp = I915_READ(MIPI_PORT_CTRL(pipe)) & ~LANE_CONFIGURATION_MASK;
+ temp = temp | intel_dsi->port_bits;
I915_WRITE(MIPI_PORT_CTRL(pipe), temp | DPI_ENABLE);
POSTING_READ(MIPI_PORT_CTRL(pipe));
}
- intel_dsi->dev.dev_ops->enable(&intel_dsi->dev);
+ if (intel_dsi->dev.dev_ops->enable)
+ intel_dsi->dev.dev_ops->enable(&intel_dsi->dev);
}
static void intel_dsi_disable(struct intel_encoder *encoder)
{
- struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
int pipe = intel_crtc->pipe;
@@ -189,8 +178,6 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
DRM_DEBUG_KMS("\n");
- intel_dsi->dev.dev_ops->disable(&intel_dsi->dev);
-
if (is_vid_mode(intel_dsi)) {
dpi_send_cmd(intel_dsi, SHUTDOWN);
msleep(10);
@@ -203,20 +190,54 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
msleep(2);
}
- temp = I915_READ(MIPI_DEVICE_READY(pipe));
- if (temp & DEVICE_READY) {
- temp &= ~DEVICE_READY;
- temp &= ~ULPS_STATE_MASK;
- I915_WRITE(MIPI_DEVICE_READY(pipe), temp);
- }
+ /* if disable packets are sent before sending shutdown packet then in
+ * some next enable sequence send turn on packet error is observed */
+ if (intel_dsi->dev.dev_ops->disable)
+ intel_dsi->dev.dev_ops->disable(&intel_dsi->dev);
}
-static void intel_dsi_post_disable(struct intel_encoder *encoder)
+static void intel_dsi_clear_device_ready(struct intel_encoder *encoder)
{
+ struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+ int pipe = intel_crtc->pipe;
+ u32 val;
+
DRM_DEBUG_KMS("\n");
+ I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER);
+ usleep_range(2000, 2500);
+
+ I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_EXIT);
+ usleep_range(2000, 2500);
+
+ I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER);
+ usleep_range(2000, 2500);
+
+ val = I915_READ(MIPI_PORT_CTRL(pipe));
+ I915_WRITE(MIPI_PORT_CTRL(pipe), val & ~LP_OUTPUT_HOLD);
+ usleep_range(1000, 1500);
+
+ if (wait_for(((I915_READ(MIPI_PORT_CTRL(pipe)) & AFE_LATCHOUT)
+ == 0x00000), 30))
+ DRM_ERROR("DSI LP not going Low\n");
+
+ I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00);
+ usleep_range(2000, 2500);
+
vlv_disable_dsi_pll(encoder);
}
+static void intel_dsi_post_disable(struct intel_encoder *encoder)
+{
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+
+ DRM_DEBUG_KMS("\n");
+
+ intel_dsi_clear_device_ready(encoder);
+
+ if (intel_dsi->dev.dev_ops->disable_panel_power)
+ intel_dsi->dev.dev_ops->disable_panel_power(&intel_dsi->dev);
+}
static bool intel_dsi_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
@@ -353,11 +374,8 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder)
DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe));
- /* Update the DSI PLL */
- vlv_enable_dsi_pll(intel_encoder);
-
/* XXX: Location of the call */
- band_gap_wa(dev_priv);
+ band_gap_reset(dev_priv);
/* escape clock divider, 20MHz, shared for A and C. device ready must be
* off when doing this! txclkesc? */
@@ -374,11 +392,7 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder)
I915_WRITE(MIPI_INTR_STAT(pipe), 0xffffffff);
I915_WRITE(MIPI_INTR_EN(pipe), 0xffffffff);
- I915_WRITE(MIPI_DPHY_PARAM(pipe),
- 0x3c << EXIT_ZERO_COUNT_SHIFT |
- 0x1f << TRAIL_COUNT_SHIFT |
- 0xc5 << CLK_ZERO_COUNT_SHIFT |
- 0x1f << PREPARE_COUNT_SHIFT);
+ I915_WRITE(MIPI_DPHY_PARAM(pipe), intel_dsi->dphy_reg);
I915_WRITE(MIPI_DPI_RESOLUTION(pipe),
adjusted_mode->vdisplay << VERTICAL_ADDRESS_SHIFT |
@@ -426,9 +440,9 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder)
adjusted_mode->htotal,
bpp, intel_dsi->lane_count) + 1);
}
- I915_WRITE(MIPI_LP_RX_TIMEOUT(pipe), 8309); /* max */
- I915_WRITE(MIPI_TURN_AROUND_TIMEOUT(pipe), 0x14); /* max */
- I915_WRITE(MIPI_DEVICE_RESET_TIMER(pipe), 0xffff); /* max */
+ I915_WRITE(MIPI_LP_RX_TIMEOUT(pipe), intel_dsi->lp_rx_timeout);
+ I915_WRITE(MIPI_TURN_AROUND_TIMEOUT(pipe), intel_dsi->turn_arnd_val);
+ I915_WRITE(MIPI_DEVICE_RESET_TIMER(pipe), intel_dsi->rst_timer_val);
/* dphy stuff */
@@ -443,29 +457,31 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder)
*
* XXX: write MIPI_STOP_STATE_STALL?
*/
- I915_WRITE(MIPI_HIGH_LOW_SWITCH_COUNT(pipe), 0x46);
+ I915_WRITE(MIPI_HIGH_LOW_SWITCH_COUNT(pipe),
+ intel_dsi->hs_to_lp_count);
/* XXX: low power clock equivalence in terms of byte clock. the number
* of byte clocks occupied in one low power clock. based on txbyteclkhs
* and txclkesc. txclkesc time / txbyteclk time * (105 +
* MIPI_STOP_STATE_STALL) / 105.???
*/
- I915_WRITE(MIPI_LP_BYTECLK(pipe), 4);
+ I915_WRITE(MIPI_LP_BYTECLK(pipe), intel_dsi->lp_byte_clk);
/* the bw essential for transmitting 16 long packets containing 252
* bytes meant for dcs write memory command is programmed in this
* register in terms of byte clocks. based on dsi transfer rate and the
* number of lanes configured the time taken to transmit 16 long packets
* in a dsi stream varies. */
- I915_WRITE(MIPI_DBI_BW_CTRL(pipe), 0x820);
+ I915_WRITE(MIPI_DBI_BW_CTRL(pipe), intel_dsi->bw_timer);
I915_WRITE(MIPI_CLK_LANE_SWITCH_TIME_CNT(pipe),
- 0xa << LP_HS_SSW_CNT_SHIFT |
- 0x14 << HS_LP_PWR_SW_CNT_SHIFT);
+ intel_dsi->clk_lp_to_hs_count << LP_HS_SSW_CNT_SHIFT |
+ intel_dsi->clk_hs_to_lp_count << HS_LP_PWR_SW_CNT_SHIFT);
if (is_vid_mode(intel_dsi))
I915_WRITE(MIPI_VIDEO_MODE_FORMAT(pipe),
- intel_dsi->video_mode_format);
+ intel_dsi->video_frmt_cfg_bits |
+ intel_dsi->video_mode_format);
}
static enum drm_connector_status