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drm/i915: Manage HSW/BDW LCPLLs with the shared dpll interface 

Manage the LCPLLs used with DisplayPort, so that all the HSW/BDW DPLLs
are managed by the shared dpll code.

v2: Introduce INTEL_DPLL_ALWAYS_ON flag to please state checker. (Ander)

v3: Initialize pll->flags in intel_shared_dpll_init(). (Ander)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1457451987-17466-13-git-send-email-ander.conselvan.de.oliveira@intel.com
hifive-unleashed-5.1
Ander Conselvan de Oliveira 2016-03-08 17:46:26 +02:00
parent 34177c249a
commit 9d16da65bf
7 changed files with 108 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -992,17 +992,13 @@ hsw_ddi_pll_select(struct intel_crtc *intel_crtc,
{
struct intel_shared_dpll *pll;
if (intel_encoder->type == INTEL_OUTPUT_HDMI ||
intel_encoder->type == INTEL_OUTPUT_ANALOG) {
pll = intel_get_shared_dpll(intel_crtc, crtc_state,
intel_encoder);
if (!pll)
DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
pipe_name(intel_crtc->pipe));
return pll;
} else {
return true;
}
pll = intel_get_shared_dpll(intel_crtc, crtc_state,
intel_encoder);
if (!pll)
DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
pipe_name(intel_crtc->pipe));
return pll;
}
static bool

25
drivers/gpu/drm/i915/intel_display.c
View File

@ -9821,13 +9821,19 @@ static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
case PORT_CLK_SEL_SPLL:
id = DPLL_ID_SPLL;
break;
case PORT_CLK_SEL_LCPLL_810:
id = DPLL_ID_LCPLL_810;
break;
case PORT_CLK_SEL_LCPLL_1350:
id = DPLL_ID_LCPLL_1350;
break;
case PORT_CLK_SEL_LCPLL_2700:
id = DPLL_ID_LCPLL_2700;
break;
default:
MISSING_CASE(pipe_config->ddi_pll_sel);
/* fall through */
case PORT_CLK_SEL_NONE:
case PORT_CLK_SEL_LCPLL_810:
case PORT_CLK_SEL_LCPLL_1350:
case PORT_CLK_SEL_LCPLL_2700:
return;
}
@ -12942,11 +12948,14 @@ check_shared_dpll_state(struct drm_device *dev)
pll->active, hweight32(pll->config.crtc_mask));
I915_STATE_WARN(pll->active && !pll->on,
"pll in active use but not on in sw tracking\n");
I915_STATE_WARN(pll->on && !pll->active,
"pll in on but not on in use in sw tracking\n");
I915_STATE_WARN(pll->on != active,
"pll on state mismatch (expected %i, found %i)\n",
pll->on, active);
if (!(pll->flags & INTEL_DPLL_ALWAYS_ON)) {
I915_STATE_WARN(pll->on && !pll->active,
"pll in on but not on in use in sw tracking\n");
I915_STATE_WARN(pll->on != active,
"pll on state mismatch (expected %i, found %i)\n",
pll->on, active);
}
for_each_intel_crtc(dev, crtc) {
if (crtc->base.state->enable && crtc->config->shared_dpll == pll)

23
drivers/gpu/drm/i915/intel_dp.c
View File

@ -1283,25 +1283,6 @@ skl_edp_set_pll_config(struct intel_crtc_state *pipe_config)
pipe_config->dpll_hw_state.ctrl1 = ctrl1;
}
void
hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config)
{
memset(&pipe_config->dpll_hw_state, 0,
sizeof(pipe_config->dpll_hw_state));
switch (pipe_config->port_clock / 2) {
case 81000:
pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810;
break;
case 135000:
pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350;
break;
case 270000:
pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700;
break;
}
}
static int
intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates)
{
@ -1661,10 +1642,8 @@ found:
if ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) && is_edp(intel_dp))
skl_edp_set_pll_config(pipe_config);
else if (IS_BROXTON(dev))
else if (IS_BROXTON(dev) || IS_HASWELL(dev) || IS_BROADWELL(dev))
/* handled in ddi */;
else if (IS_HASWELL(dev) || IS_BROADWELL(dev))
hsw_dp_set_ddi_pll_sel(pipe_config);
else
intel_dp_set_clock(encoder, pipe_config);

4
drivers/gpu/drm/i915/intel_dp_mst.c
View File

@ -33,7 +33,6 @@
static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = encoder->base.dev;
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
struct intel_digital_port *intel_dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &intel_dig_port->dp;
@ -92,9 +91,6 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
pipe_config->dp_m_n.tu = slots;
if (IS_HASWELL(dev) || IS_BROADWELL(dev))
hsw_dp_set_ddi_pll_sel(pipe_config);
return true;
}

90
drivers/gpu/drm/i915/intel_dpll_mgr.c
View File

@ -447,6 +447,12 @@ static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll)
return PORT_CLK_SEL_WRPLL2;
case DPLL_ID_SPLL:
return PORT_CLK_SEL_SPLL;
case DPLL_ID_LCPLL_810:
return PORT_CLK_SEL_LCPLL_810;
case DPLL_ID_LCPLL_1350:
return PORT_CLK_SEL_LCPLL_1350;
case DPLL_ID_LCPLL_2700:
return PORT_CLK_SEL_LCPLL_2700;
default:
return PORT_CLK_SEL_NONE;
}
@ -671,9 +677,13 @@ static struct intel_shared_dpll *
hsw_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_shared_dpll *pll;
int clock = crtc_state->port_clock;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (encoder->type == INTEL_OUTPUT_HDMI) {
uint32_t val;
unsigned p, n2, r2;
@ -684,21 +694,37 @@ hsw_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
WRPLL_DIVIDER_POST(p);
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
crtc_state->dpll_hw_state.wrpll = val;
pll = intel_find_shared_dpll(crtc, crtc_state,
DPLL_ID_WRPLL1, DPLL_ID_WRPLL2);
} else if (encoder->type == INTEL_OUTPUT_DISPLAYPORT ||
encoder->type == INTEL_OUTPUT_DP_MST ||
encoder->type == INTEL_OUTPUT_EDP) {
enum intel_dpll_id pll_id;
switch (clock / 2) {
case 81000:
pll_id = DPLL_ID_LCPLL_810;
break;
case 135000:
pll_id = DPLL_ID_LCPLL_1350;
break;
case 270000:
pll_id = DPLL_ID_LCPLL_2700;
break;
default:
DRM_DEBUG_KMS("Invalid clock for DP: %d\n", clock);
return NULL;
}
pll = intel_get_shared_dpll_by_id(dev_priv, pll_id);
} else if (encoder->type == INTEL_OUTPUT_ANALOG) {
if (WARN_ON(crtc_state->port_clock / 2 != 135000))
return NULL;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
crtc_state->dpll_hw_state.spll =
SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SSC;
@ -731,6 +757,29 @@ static const struct intel_shared_dpll_funcs hsw_ddi_spll_funcs = {
.get_hw_state = hsw_ddi_spll_get_hw_state,
};
static void hsw_ddi_lcpll_enable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
}
static void hsw_ddi_lcpll_disable(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll)
{
}
static bool hsw_ddi_lcpll_get_hw_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state)
{
return true;
}
static const struct intel_shared_dpll_funcs hsw_ddi_lcpll_funcs = {
.enable = hsw_ddi_lcpll_enable,
.disable = hsw_ddi_lcpll_disable,
.get_hw_state = hsw_ddi_lcpll_get_hw_state,
};
struct skl_dpll_regs {
i915_reg_t ctl, cfgcr1, cfgcr2;
};
@ -1537,6 +1586,7 @@ struct dpll_info {
const char *name;
const int id;
const struct intel_shared_dpll_funcs *funcs;
uint32_t flags;
};
struct intel_dpll_mgr {
@ -1548,9 +1598,9 @@ struct intel_dpll_mgr {
};
static const struct dpll_info pch_plls[] = {
{ "PCH DPLL A", DPLL_ID_PCH_PLL_A, &ibx_pch_dpll_funcs },
{ "PCH DPLL B", DPLL_ID_PCH_PLL_B, &ibx_pch_dpll_funcs },
{ NULL, -1, NULL },
{ "PCH DPLL A", DPLL_ID_PCH_PLL_A, &ibx_pch_dpll_funcs, 0 },
{ "PCH DPLL B", DPLL_ID_PCH_PLL_B, &ibx_pch_dpll_funcs, 0 },
{ NULL, -1, NULL, 0 },
};
static const struct intel_dpll_mgr pch_pll_mgr = {
@ -1559,9 +1609,12 @@ static const struct intel_dpll_mgr pch_pll_mgr = {
};
static const struct dpll_info hsw_plls[] = {
{ "WRPLL 1", DPLL_ID_WRPLL1, &hsw_ddi_wrpll_funcs },
{ "WRPLL 2", DPLL_ID_WRPLL2, &hsw_ddi_wrpll_funcs },
{ "SPLL", DPLL_ID_SPLL, &hsw_ddi_spll_funcs },
{ "WRPLL 1", DPLL_ID_WRPLL1, &hsw_ddi_wrpll_funcs, 0 },
{ "WRPLL 2", DPLL_ID_WRPLL2, &hsw_ddi_wrpll_funcs, 0 },
{ "SPLL", DPLL_ID_SPLL, &hsw_ddi_spll_funcs, 0 },
{ "LCPLL 810", DPLL_ID_LCPLL_810, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON },
{ "LCPLL 1350", DPLL_ID_LCPLL_1350, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON },
{ "LCPLL 2700", DPLL_ID_LCPLL_2700, &hsw_ddi_lcpll_funcs, INTEL_DPLL_ALWAYS_ON },
{ NULL, -1, NULL, },
};
@ -1571,9 +1624,9 @@ static const struct intel_dpll_mgr hsw_pll_mgr = {
};
static const struct dpll_info skl_plls[] = {
{ "DPPL 1", DPLL_ID_SKL_DPLL1, &skl_ddi_pll_funcs },
{ "DPPL 2", DPLL_ID_SKL_DPLL2, &skl_ddi_pll_funcs },
{ "DPPL 3", DPLL_ID_SKL_DPLL3, &skl_ddi_pll_funcs },
{ "DPPL 1", DPLL_ID_SKL_DPLL1, &skl_ddi_pll_funcs, 0 },
{ "DPPL 2", DPLL_ID_SKL_DPLL2, &skl_ddi_pll_funcs, 0 },
{ "DPPL 3", DPLL_ID_SKL_DPLL3, &skl_ddi_pll_funcs, 0 },
{ NULL, -1, NULL, },
};
@ -1583,9 +1636,9 @@ static const struct intel_dpll_mgr skl_pll_mgr = {
};
static const struct dpll_info bxt_plls[] = {
{ "PORT PLL A", 0, &bxt_ddi_pll_funcs },
{ "PORT PLL B", 1, &bxt_ddi_pll_funcs },
{ "PORT PLL C", 2, &bxt_ddi_pll_funcs },
{ "PORT PLL A", 0, &bxt_ddi_pll_funcs, 0 },
{ "PORT PLL B", 1, &bxt_ddi_pll_funcs, 0 },
{ "PORT PLL C", 2, &bxt_ddi_pll_funcs, 0 },
{ NULL, -1, NULL, },
};
@ -1623,6 +1676,7 @@ void intel_shared_dpll_init(struct drm_device *dev)
dev_priv->shared_dplls[i].id = dpll_info[i].id;
dev_priv->shared_dplls[i].name = dpll_info[i].name;
dev_priv->shared_dplls[i].funcs = *dpll_info[i].funcs;
dev_priv->shared_dplls[i].flags = dpll_info[i].flags;
}
dev_priv->dpll_mgr = dpll_mgr;

12
drivers/gpu/drm/i915/intel_dpll_mgr.h
View File

@ -49,13 +49,21 @@ enum intel_dpll_id {
DPLL_ID_WRPLL1 = 0,
DPLL_ID_WRPLL2 = 1,
DPLL_ID_SPLL = 2,
DPLL_ID_LCPLL_810 = 3,
DPLL_ID_LCPLL_1350 = 4,
DPLL_ID_LCPLL_2700 = 5,
/* skl */
DPLL_ID_SKL_DPLL1 = 0,
DPLL_ID_SKL_DPLL2 = 1,
DPLL_ID_SKL_DPLL3 = 2,
};
#define I915_NUM_PLLS 3
#define I915_NUM_PLLS 6
/** Inform the state checker that the DPLL is kept enabled even if not
* in use by any crtc.
*/
#define INTEL_DPLL_ALWAYS_ON (1 << 0)
struct intel_dpll_hw_state {
/* i9xx, pch plls */
@ -113,6 +121,8 @@ struct intel_shared_dpll {
enum intel_dpll_id id;
struct intel_shared_dpll_funcs funcs;
uint32_t flags;
};
#define SKL_DPLL0 0

1
drivers/gpu/drm/i915/intel_drv.h
View File

@ -1312,7 +1312,6 @@ void intel_edp_drrs_invalidate(struct drm_device *dev,
void intel_edp_drrs_flush(struct drm_device *dev, unsigned frontbuffer_bits);
bool intel_digital_port_connected(struct drm_i915_private *dev_priv,
struct intel_digital_port *port);
void hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config);
void
intel_dp_program_link_training_pattern(struct intel_dp *intel_dp,