summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h1
-rw-r--r--drivers/gpu/drm/i915/i915_reg.h1
-rw-r--r--drivers/gpu/drm/i915/intel_display.c19
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h2
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c74
5 files changed, 44 insertions, 53 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 466b8b68f467..313bc3576d87 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1118,6 +1118,7 @@ struct intel_gen6_power_mgmt {
u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
u8 rp1_freq; /* "less than" RP0 power/freqency */
u8 rp0_freq; /* Non-overclocked max frequency. */
+ u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
u8 up_threshold; /* Current %busy required to uplock */
u8 down_threshold; /* Current %busy required to downclock */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 30fea341ae66..17603ada78ea 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -796,6 +796,7 @@ enum skl_disp_power_wells {
#define DSI_PLL_M1_DIV_SHIFT 0
#define DSI_PLL_M1_DIV_MASK (0x1ff << 0)
#define CCK_CZ_CLOCK_CONTROL 0x62
+#define CCK_GPLL_CLOCK_CONTROL 0x67
#define CCK_DISPLAY_CLOCK_CONTROL 0x6b
#define CCK_DISPLAY_REF_CLOCK_CONTROL 0x6c
#define CCK_TRUNK_FORCE_ON (1 << 17)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index af74cdba7081..cb2d6af7a839 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -147,15 +147,12 @@ static int valleyview_get_vco(struct drm_i915_private *dev_priv)
return vco_freq[hpll_freq] * 1000;
}
-static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
- const char *name, u32 reg)
+int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
+ const char *name, u32 reg, int ref_freq)
{
u32 val;
int divider;
- if (dev_priv->hpll_freq == 0)
- dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
-
mutex_lock(&dev_priv->sb_lock);
val = vlv_cck_read(dev_priv, reg);
mutex_unlock(&dev_priv->sb_lock);
@@ -166,7 +163,17 @@ static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
(divider << CCK_FREQUENCY_STATUS_SHIFT),
"%s change in progress\n", name);
- return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
+ return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
+}
+
+static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
+ const char *name, u32 reg)
+{
+ if (dev_priv->hpll_freq == 0)
+ dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
+
+ return vlv_get_cck_clock(dev_priv, name, reg,
+ dev_priv->hpll_freq);
}
static int
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9255b56a6c5e..e0fcfa1683cc 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1104,6 +1104,8 @@ void i915_audio_component_init(struct drm_i915_private *dev_priv);
void i915_audio_component_cleanup(struct drm_i915_private *dev_priv);
/* intel_display.c */
+int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
+ const char *name, u32 reg, int ref_freq);
extern const struct drm_plane_funcs intel_plane_funcs;
void intel_init_display_hooks(struct drm_i915_private *dev_priv);
unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9bc9c25423e9..6420776e5e98 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5366,6 +5366,17 @@ static void valleyview_cleanup_pctx(struct drm_device *dev)
dev_priv->vlv_pctx = NULL;
}
+static void vlv_init_gpll_ref_freq(struct drm_i915_private *dev_priv)
+{
+ dev_priv->rps.gpll_ref_freq =
+ vlv_get_cck_clock(dev_priv, "GPLL ref",
+ CCK_GPLL_CLOCK_CONTROL,
+ dev_priv->czclk_freq);
+
+ DRM_DEBUG_DRIVER("GPLL reference freq: %d kHz\n",
+ dev_priv->rps.gpll_ref_freq);
+}
+
static void valleyview_init_gt_powersave(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -5373,6 +5384,8 @@ static void valleyview_init_gt_powersave(struct drm_device *dev)
valleyview_setup_pctx(dev);
+ vlv_init_gpll_ref_freq(dev_priv);
+
mutex_lock(&dev_priv->rps.hw_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
@@ -5430,6 +5443,8 @@ static void cherryview_init_gt_powersave(struct drm_device *dev)
cherryview_setup_pctx(dev);
+ vlv_init_gpll_ref_freq(dev_priv);
+
mutex_lock(&dev_priv->rps.hw_lock);
mutex_lock(&dev_priv->sb_lock);
@@ -7280,68 +7295,33 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val
return 0;
}
-static int vlv_gpu_freq_div(unsigned int czclk_freq)
-{
- switch (czclk_freq) {
- case 200:
- return 10;
- case 267:
- return 12;
- case 320:
- case 333:
- return 16;
- case 400:
- return 20;
- default:
- return -1;
- }
-}
-
static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val)
{
- int div, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000);
-
- div = vlv_gpu_freq_div(czclk_freq);
- if (div < 0)
- return div;
-
- return DIV_ROUND_CLOSEST(czclk_freq * (val + 6 - 0xbd), div);
+ /*
+ * N = val - 0xb7
+ * Slow = Fast = GPLL ref * N
+ */
+ return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * (val - 0xb7), 1000);
}
static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val)
{
- int mul, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000);
-
- mul = vlv_gpu_freq_div(czclk_freq);
- if (mul < 0)
- return mul;
-
- return DIV_ROUND_CLOSEST(mul * val, czclk_freq) + 0xbd - 6;
+ return DIV_ROUND_CLOSEST(1000 * val, dev_priv->rps.gpll_ref_freq) + 0xb7;
}
static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val)
{
- int div, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000);
-
- div = vlv_gpu_freq_div(czclk_freq);
- if (div < 0)
- return div;
- div /= 2;
-
- return DIV_ROUND_CLOSEST(czclk_freq * val, 2 * div) / 2;
+ /*
+ * N = val / 2
+ * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2
+ */
+ return DIV_ROUND_CLOSEST(dev_priv->rps.gpll_ref_freq * val, 2 * 2 * 1000);
}
static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val)
{
- int mul, czclk_freq = DIV_ROUND_CLOSEST(dev_priv->czclk_freq, 1000);
-
- mul = vlv_gpu_freq_div(czclk_freq);
- if (mul < 0)
- return mul;
- mul /= 2;
-
/* CHV needs even values */
- return DIV_ROUND_CLOSEST(val * 2 * mul, czclk_freq) * 2;
+ return DIV_ROUND_CLOSEST(2 * 1000 * val, dev_priv->rps.gpll_ref_freq) * 2;
}
int intel_gpu_freq(struct drm_i915_private *dev_priv, int val)