Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_display.c

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 94c7c098c4ff0e418621f1b9329f3d7304dfaaa9..a2834276cb38637949648dad2ae2b59de8995fbf 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -90,12 +90,12 @@ typedef struct {
 #define I9XX_DOT_MAX            400000
 #define I9XX_VCO_MIN           1400000
 #define I9XX_VCO_MAX           2800000
-#define I9XX_N_MIN                   3
-#define I9XX_N_MAX                   8
+#define I9XX_N_MIN                   1
+#define I9XX_N_MAX                   6
 #define I9XX_M_MIN                  70
 #define I9XX_M_MAX                 120
 #define I9XX_M1_MIN                 10
-#define I9XX_M1_MAX                 20
+#define I9XX_M1_MAX                 22
 #define I9XX_M2_MIN                  5
 #define I9XX_M2_MAX                  9
 #define I9XX_P_SDVO_DAC_MIN          5
@@ -189,19 +189,7 @@ static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
        return limit;
 }
 
-/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
-
-static void i8xx_clock(int refclk, intel_clock_t *clock)
-{
-       clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
-       clock->p = clock->p1 * clock->p2;
-       clock->vco = refclk * clock->m / (clock->n + 2);
-       clock->dot = clock->vco / clock->p;
-}
-
-/** Derive the pixel clock for the given refclk and divisors for 9xx chips. */
-
-static void i9xx_clock(int refclk, intel_clock_t *clock)
+static void intel_clock(int refclk, intel_clock_t *clock)
 {
        clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
        clock->p = clock->p1 * clock->p2;
@@ -209,15 +197,6 @@ static void i9xx_clock(int refclk, intel_clock_t *clock)
        clock->dot = clock->vco / clock->p;
 }
 
-static void intel_clock(struct drm_device *dev, int refclk,
-                       intel_clock_t *clock)
-{
-       if (IS_I9XX(dev))
-               i9xx_clock (refclk, clock);
-       else
-               i8xx_clock (refclk, clock);
-}
-
 /**
  * Returns whether any output on the specified pipe is of the specified type
  */
@@ -238,7 +217,7 @@ bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
     return false;
 }
 
-#define INTELPllInvalid(s)   { /* ErrorF (s) */; return false; }
+#define INTELPllInvalid(s)   do { /* DRM_DEBUG(s); */ return false; } while (0)
 /**
  * Returns whether the given set of divisors are valid for a given refclk with
  * the given connectors.
@@ -318,7 +297,7 @@ static bool intel_find_best_PLL(struct drm_crtc *crtc, int target,
                                     clock.p1 <= limit->p1.max; clock.p1++) {
                                        int this_err;
 
-                                       intel_clock(dev, refclk, &clock);
+                                       intel_clock(refclk, &clock);
 
                                        if (!intel_PLL_is_valid(crtc, &clock))
                                                continue;
@@ -747,7 +726,7 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
        int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
        int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
        int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
-       int refclk;
+       int refclk, num_outputs = 0;
        intel_clock_t clock;
        u32 dpll = 0, fp = 0, dspcntr, pipeconf;
        bool ok, is_sdvo = false, is_dvo = false;
@@ -784,9 +763,14 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
                        is_crt = true;
                        break;
                }
+
+               num_outputs++;
        }
 
-       if (IS_I9XX(dev)) {
+       if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) {
+               refclk = dev_priv->lvds_ssc_freq * 1000;
+               DRM_DEBUG("using SSC reference clock of %d MHz\n", refclk / 1000);
+       } else if (IS_I9XX(dev)) {
                refclk = 96000;
        } else {
                refclk = 48000;
@@ -845,11 +829,14 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
                }
        }
 
-       if (is_tv) {
+       if (is_sdvo && is_tv)
+               dpll |= PLL_REF_INPUT_TVCLKINBC;
+       else if (is_tv)
                /* XXX: just matching BIOS for now */
-/*     dpll |= PLL_REF_INPUT_TVCLKINBC; */
+               /*      dpll |= PLL_REF_INPUT_TVCLKINBC; */
                dpll |= 3;
-       }
+       else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2)
+               dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
        else
                dpll |= PLL_REF_INPUT_DREFCLK;
 
@@ -1021,6 +1008,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
                temp = CURSOR_MODE_DISABLE;
                addr = 0;
                bo = NULL;
+               mutex_lock(&dev->struct_mutex);
                goto finish;
        }
 
@@ -1313,7 +1301,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
                }
 
                /* XXX: Handle the 100Mhz refclk */
-               i9xx_clock(96000, &clock);
+               intel_clock(96000, &clock);
        } else {
                bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
 
@@ -1325,9 +1313,9 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
                        if ((dpll & PLL_REF_INPUT_MASK) ==
                            PLLB_REF_INPUT_SPREADSPECTRUMIN) {
                                /* XXX: might not be 66MHz */
-                               i8xx_clock(66000, &clock);
+                               intel_clock(66000, &clock);
                        } else
-                               i8xx_clock(48000, &clock);
+                               intel_clock(48000, &clock);
                } else {
                        if (dpll & PLL_P1_DIVIDE_BY_TWO)
                                clock.p1 = 2;
@@ -1340,7 +1328,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
                        else
                                clock.p2 = 2;
 
-                       i8xx_clock(48000, &clock);
+                       intel_clock(48000, &clock);
                }
        }
 
@@ -1619,7 +1607,9 @@ intel_user_framebuffer_create(struct drm_device *dev,
 
        ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
        if (ret) {
+               mutex_lock(&dev->struct_mutex);
                drm_gem_object_unreference(obj);
+               mutex_unlock(&dev->struct_mutex);
                return NULL;
        }