[PATCH 21/23] drm/i915/gen9+: Unify the HSW/BDW and GEN9+ power well helpers
Imre Deak
imre.deak at intel.com
Wed Jul 5 20:00:38 UTC 2017
After the previous refactorings the HSW/BDW and GEN9+ power well helpers
are practically identical, so use the HSW power well helpers for GEN9+
too. This means using the HSW power well ops instead of the SKL one and
setting the pipe_mask, has_vga and has_fuses attributes as needed.
Signed-off-by: Imre Deak <imre.deak at intel.com>
---
drivers/gpu/drm/i915/intel_runtime_pm.c | 231 ++++++--------------------------
1 file changed, 43 insertions(+), 188 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index a183b9c..d4f4725 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -313,38 +313,6 @@ static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv,
gen8_irq_power_well_pre_disable(dev_priv, pipe_mask);
}
-static void skl_power_well_post_enable(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- struct pci_dev *pdev = dev_priv->drm.pdev;
-
- /*
- * After we re-enable the power well, if we touch VGA register 0x3d5
- * we'll get unclaimed register interrupts. This stops after we write
- * anything to the VGA MSR register. The vgacon module uses this
- * register all the time, so if we unbind our driver and, as a
- * consequence, bind vgacon, we'll get stuck in an infinite loop at
- * console_unlock(). So make here we touch the VGA MSR register, making
- * sure vgacon can keep working normally without triggering interrupts
- * and error messages.
- */
- if (power_well->id == SKL_DISP_PW_2) {
- vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
- outb(inb(VGA_MSR_READ), VGA_MSR_WRITE);
- vga_put(pdev, VGA_RSRC_LEGACY_IO);
-
- gen8_irq_power_well_post_enable(dev_priv,
- 1 << PIPE_C | 1 << PIPE_B);
- }
-}
-
-static void skl_power_well_pre_disable(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- if (power_well->id == SKL_DISP_PW_2)
- gen8_irq_power_well_pre_disable(dev_priv,
- 1 << PIPE_C | 1 << PIPE_B);
-}
static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
@@ -821,91 +789,6 @@ void skl_disable_dc6(struct drm_i915_private *dev_priv)
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
}
-static void skl_set_power_well(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well, bool enable)
-{
- uint32_t tmp, fuse_status;
- uint32_t req_mask, state_mask;
- bool check_fuse_status = false;
-
- tmp = I915_READ(HSW_PWR_WELL_DRIVER);
- fuse_status = I915_READ(SKL_FUSE_STATUS);
-
- switch (power_well->id) {
- case SKL_DISP_PW_1:
- if (intel_wait_for_register(dev_priv,
- SKL_FUSE_STATUS,
- SKL_FUSE_PG_DIST_STATUS(0),
- SKL_FUSE_PG_DIST_STATUS(0),
- 1)) {
- DRM_ERROR("PG0 not enabled\n");
- return;
- }
- break;
- case SKL_DISP_PW_2:
- if (!(fuse_status & SKL_FUSE_PG_DIST_STATUS(1))) {
- DRM_ERROR("PG1 in disabled state\n");
- return;
- }
- break;
- case SKL_DISP_PW_MISC_IO:
- case SKL_DISP_PW_DDI_A_E: /* GLK_DISP_PW_DDI_A, CNL_DISP_PW_DDI_A */
- case SKL_DISP_PW_DDI_B:
- case SKL_DISP_PW_DDI_C:
- case SKL_DISP_PW_DDI_D:
- case GLK_DISP_PW_AUX_A: /* CNL_DISP_PW_AUX_A */
- case GLK_DISP_PW_AUX_B: /* CNL_DISP_PW_AUX_B */
- case GLK_DISP_PW_AUX_C: /* CNL_DISP_PW_AUX_C */
- case CNL_DISP_PW_AUX_D:
- break;
- default:
- WARN(1, "Unknown power well %u\n", power_well->id);
- return;
- }
-
- req_mask = HSW_PWR_WELL_CTL_REQ(power_well->id);
- state_mask = HSW_PWR_WELL_CTL_STATE(power_well->id);
-
- if (!enable)
- skl_power_well_pre_disable(dev_priv, power_well);
-
- if (enable) {
- I915_WRITE(HSW_PWR_WELL_DRIVER, tmp | req_mask);
-
- DRM_DEBUG_KMS("Enabling %s\n", power_well->name);
- check_fuse_status = true;
-
- hsw_wait_for_power_well_enable(dev_priv, power_well);
- } else {
- I915_WRITE(HSW_PWR_WELL_DRIVER, tmp & ~req_mask);
- POSTING_READ(HSW_PWR_WELL_DRIVER);
- DRM_DEBUG_KMS("Disabling %s\n", power_well->name);
-
- hsw_wait_for_power_well_disable(dev_priv, power_well);
- }
-
- if (check_fuse_status) {
- if (power_well->id == SKL_DISP_PW_1) {
- if (intel_wait_for_register(dev_priv,
- SKL_FUSE_STATUS,
- SKL_FUSE_PG_DIST_STATUS(1),
- SKL_FUSE_PG_DIST_STATUS(1),
- 1))
- DRM_ERROR("PG1 distributing status timeout\n");
- } else if (power_well->id == SKL_DISP_PW_2) {
- if (intel_wait_for_register(dev_priv,
- SKL_FUSE_STATUS,
- SKL_FUSE_PG_DIST_STATUS(2),
- SKL_FUSE_PG_DIST_STATUS(2),
- 1))
- DRM_ERROR("PG2 distributing status timeout\n");
- }
- }
-
- if (enable)
- skl_power_well_post_enable(dev_priv, power_well);
-}
-
static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
@@ -923,43 +806,6 @@ static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
}
}
-static bool skl_power_well_enabled(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- uint32_t mask = HSW_PWR_WELL_CTL_REQ(power_well->id) |
- HSW_PWR_WELL_CTL_STATE(power_well->id);
-
- return (I915_READ(HSW_PWR_WELL_DRIVER) & mask) == mask;
-}
-
-static void skl_power_well_sync_hw(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- uint32_t mask = HSW_PWR_WELL_CTL_REQ(power_well->id);
- uint32_t bios_req = I915_READ(HSW_PWR_WELL_BIOS);
-
- /* Take over the request bit if set by BIOS. */
- if (bios_req & mask) {
- uint32_t drv_req = I915_READ(HSW_PWR_WELL_DRIVER);
-
- if (!(drv_req & mask))
- I915_WRITE(HSW_PWR_WELL_DRIVER, drv_req | mask);
- I915_WRITE(HSW_PWR_WELL_BIOS, bios_req & ~mask);
- }
-}
-
-static void skl_power_well_enable(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- skl_set_power_well(dev_priv, power_well, true);
-}
-
-static void skl_power_well_disable(struct drm_i915_private *dev_priv,
- struct i915_power_well *power_well)
-{
- skl_set_power_well(dev_priv, power_well, false);
-}
-
static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
@@ -2047,13 +1893,6 @@ static const struct i915_power_well_ops hsw_power_well_ops = {
.is_enabled = hsw_power_well_enabled,
};
-static const struct i915_power_well_ops skl_power_well_ops = {
- .sync_hw = skl_power_well_sync_hw,
- .enable = skl_power_well_enable,
- .disable = skl_power_well_disable,
- .is_enabled = skl_power_well_enabled,
-};
-
static const struct i915_power_well_ops gen9_dc_off_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = gen9_dc_off_power_well_enable,
@@ -2239,14 +2078,15 @@ static struct i915_power_well skl_power_wells[] = {
.name = "power well 1",
/* Handled by the DMC firmware */
.domains = 0,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_1,
+ .hsw.has_fuses = true,
},
{
.name = "MISC IO power well",
/* Handled by the DMC firmware */
.domains = 0,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_MISC_IO,
},
{
@@ -2258,31 +2098,34 @@ static struct i915_power_well skl_power_wells[] = {
{
.name = "power well 2",
.domains = SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_2,
+ .hsw.pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+ .hsw.has_vga = true,
+ .hsw.has_fuses = true,
},
{
.name = "DDI A/E IO power well",
.domains = SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_A_E,
},
{
.name = "DDI B IO power well",
.domains = SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_B,
},
{
.name = "DDI C IO power well",
.domains = SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_C,
},
{
.name = "DDI D IO power well",
.domains = SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_D,
},
};
@@ -2298,8 +2141,9 @@ static struct i915_power_well bxt_power_wells[] = {
{
.name = "power well 1",
.domains = 0,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_1,
+ .hsw.has_fuses = true,
},
{
.name = "DC off",
@@ -2310,8 +2154,11 @@ static struct i915_power_well bxt_power_wells[] = {
{
.name = "power well 2",
.domains = BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_2,
+ .hsw.pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+ .hsw.has_vga = true,
+ .hsw.has_fuses = true,
},
{
.name = "dpio-common-a",
@@ -2341,8 +2188,9 @@ static struct i915_power_well glk_power_wells[] = {
.name = "power well 1",
/* Handled by the DMC firmware */
.domains = 0,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_1,
+ .hsw.has_fuses = true,
},
{
.name = "DC off",
@@ -2353,8 +2201,11 @@ static struct i915_power_well glk_power_wells[] = {
{
.name = "power well 2",
.domains = GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_2,
+ .hsw.pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+ .hsw.has_vga = true,
+ .hsw.has_fuses = true,
},
{
.name = "dpio-common-a",
@@ -2380,37 +2231,37 @@ static struct i915_power_well glk_power_wells[] = {
{
.name = "AUX A",
.domains = GLK_DISPLAY_AUX_A_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = GLK_DISP_PW_AUX_A,
},
{
.name = "AUX B",
.domains = GLK_DISPLAY_AUX_B_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = GLK_DISP_PW_AUX_B,
},
{
.name = "AUX C",
.domains = GLK_DISPLAY_AUX_C_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = GLK_DISP_PW_AUX_C,
},
{
.name = "DDI A IO power well",
.domains = GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = GLK_DISP_PW_DDI_A,
},
{
.name = "DDI B IO power well",
.domains = GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_B,
},
{
.name = "DDI C IO power well",
.domains = GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_C,
},
};
@@ -2427,31 +2278,32 @@ static struct i915_power_well cnl_power_wells[] = {
.name = "power well 1",
/* Handled by the DMC firmware */
.domains = 0,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_1,
+ .hsw.has_fuses = true,
},
{
.name = "AUX A",
.domains = CNL_DISPLAY_AUX_A_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = CNL_DISP_PW_AUX_A,
},
{
.name = "AUX B",
.domains = CNL_DISPLAY_AUX_B_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = CNL_DISP_PW_AUX_B,
},
{
.name = "AUX C",
.domains = CNL_DISPLAY_AUX_C_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = CNL_DISP_PW_AUX_C,
},
{
.name = "AUX D",
.domains = CNL_DISPLAY_AUX_D_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = CNL_DISP_PW_AUX_D,
},
{
@@ -2463,31 +2315,34 @@ static struct i915_power_well cnl_power_wells[] = {
{
.name = "power well 2",
.domains = CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_2,
+ .hsw.pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
+ .hsw.has_vga = true,
+ .hsw.has_fuses = true,
},
{
.name = "DDI A IO power well",
.domains = CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = CNL_DISP_PW_DDI_A,
},
{
.name = "DDI B IO power well",
.domains = CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_B,
},
{
.name = "DDI C IO power well",
.domains = CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_C,
},
{
.name = "DDI D IO power well",
.domains = CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS,
- .ops = &skl_power_well_ops,
+ .ops = &hsw_power_well_ops,
.id = SKL_DISP_PW_DDI_D,
},
};
--
2.7.4
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