blob: 5feb65725c04e350c09d33b8969a53770d3d6049 [file] [log] [blame]
/*
* Copyright © 2006-2007 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*/
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vgaarb.h>
#include <drm/drm_edid.h>
#include <drm/drmP.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include "i915_trace.h"
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
#include <linux/dma_remapping.h>
#include <linux/reservation.h>
#include <linux/dma-buf.h>
/* Primary plane formats for gen <= 3 */
static const uint32_t i8xx_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_XRGB8888,
};
/* Primary plane formats for gen >= 4 */
static const uint32_t i965_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
};
static const uint32_t skl_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
DRM_FORMAT_YUYV,
DRM_FORMAT_YVYU,
DRM_FORMAT_UYVY,
DRM_FORMAT_VYUY,
};
/* Cursor formats */
static const uint32_t intel_cursor_formats[] = {
DRM_FORMAT_ARGB8888,
};
static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static void ironlake_pch_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static int intel_framebuffer_init(struct drm_device *dev,
struct intel_framebuffer *ifb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj);
static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2);
static void ironlake_set_pipeconf(struct drm_crtc *crtc);
static void haswell_set_pipeconf(struct drm_crtc *crtc);
static void intel_set_pipe_csc(struct drm_crtc *crtc);
static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void intel_begin_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
static void intel_finish_crtc_commit(struct drm_crtc *, struct drm_crtc_state *);
static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
struct intel_crtc_state *crtc_state);
static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
int num_connectors);
static void skylake_pfit_enable(struct intel_crtc *crtc);
static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
static void ironlake_pfit_enable(struct intel_crtc *crtc);
static void intel_modeset_setup_hw_state(struct drm_device *dev);
static void intel_pre_disable_primary(struct drm_crtc *crtc);
typedef struct {
int min, max;
} intel_range_t;
typedef struct {
int dot_limit;
int p2_slow, p2_fast;
} intel_p2_t;
typedef struct intel_limit intel_limit_t;
struct intel_limit {
intel_range_t dot, vco, n, m, m1, m2, p, p1;
intel_p2_t p2;
};
/* returns HPLL frequency in kHz */
static int valleyview_get_vco(struct drm_i915_private *dev_priv)
{
int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
/* Obtain SKU information */
mutex_lock(&dev_priv->sb_lock);
hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
CCK_FUSE_HPLL_FREQ_MASK;
mutex_unlock(&dev_priv->sb_lock);
return vco_freq[hpll_freq] * 1000;
}
static int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
const char *name, u32 reg)
{
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);
divider = val & CCK_FREQUENCY_VALUES;
WARN((val & CCK_FREQUENCY_STATUS) !=
(divider << CCK_FREQUENCY_STATUS_SHIFT),
"%s change in progress\n", name);
return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
}
int
intel_pch_rawclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
WARN_ON(!HAS_PCH_SPLIT(dev));
return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
}
/* hrawclock is 1/4 the FSB frequency */
int intel_hrawclk(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t clkcfg;
/* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */
if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
return 200;
clkcfg = I915_READ(CLKCFG);
switch (clkcfg & CLKCFG_FSB_MASK) {
case CLKCFG_FSB_400:
return 100;
case CLKCFG_FSB_533:
return 133;
case CLKCFG_FSB_667:
return 166;
case CLKCFG_FSB_800:
return 200;
case CLKCFG_FSB_1067:
return 266;
case CLKCFG_FSB_1333:
return 333;
/* these two are just a guess; one of them might be right */
case CLKCFG_FSB_1600:
case CLKCFG_FSB_1600_ALT:
return 400;
default:
return 133;
}
}
static void intel_update_czclk(struct drm_i915_private *dev_priv)
{
if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
return;
dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
CCK_CZ_CLOCK_CONTROL);
DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
}
static inline u32 /* units of 100MHz */
intel_fdi_link_freq(struct drm_device *dev)
{
if (IS_GEN5(dev)) {
struct drm_i915_private *dev_priv = dev->dev_private;
return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
} else
return 27;
}
static const intel_limit_t intel_limits_i8xx_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 2 },
};
static const intel_limit_t intel_limits_i8xx_dvo = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 4 },
};
static const intel_limit_t intel_limits_i8xx_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 1, .max = 6 },
.p2 = { .dot_limit = 165000,
.p2_slow = 14, .p2_fast = 7 },
};
static const intel_limit_t intel_limits_i9xx_sdvo = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const intel_limit_t intel_limits_i9xx_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 7, .max = 98 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 7 },
};
static const intel_limit_t intel_limits_g4x_sdvo = {
.dot = { .min = 25000, .max = 270000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 10, .max = 30 },
.p1 = { .min = 1, .max = 3},
.p2 = { .dot_limit = 270000,
.p2_slow = 10,
.p2_fast = 10
},
};
static const intel_limit_t intel_limits_g4x_hdmi = {
.dot = { .min = 22000, .max = 400000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 16, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8},
.p2 = { .dot_limit = 165000,
.p2_slow = 10, .p2_fast = 5 },
};
static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
.dot = { .min = 20000, .max = 115000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 0,
.p2_slow = 14, .p2_fast = 14
},
};
static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
.dot = { .min = 80000, .max = 224000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 0,
.p2_slow = 7, .p2_fast = 7
},
};
static const intel_limit_t intel_limits_pineview_sdvo = {
.dot = { .min = 20000, .max = 400000},
.vco = { .min = 1700000, .max = 3500000 },
/* Pineview's Ncounter is a ring counter */
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
/* Pineview only has one combined m divider, which we treat as m2. */
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const intel_limit_t intel_limits_pineview_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1700000, .max = 3500000 },
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 7, .max = 112 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 14 },
};
/* Ironlake / Sandybridge
*
* We calculate clock using (register_value + 2) for N/M1/M2, so here
* the range value for them is (actual_value - 2).
*/
static const intel_limit_t intel_limits_ironlake_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 5 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 10, .p2_fast = 5 },
};
static const intel_limit_t intel_limits_ironlake_single_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 118 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const intel_limit_t intel_limits_ironlake_dual_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 56 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
/* LVDS 100mhz refclk limits. */
static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 2 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
static const intel_limit_t intel_limits_vlv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 270000 * 5 },
.vco = { .min = 4000000, .max = 6000000 },
.n = { .min = 1, .max = 7 },
.m1 = { .min = 2, .max = 3 },
.m2 = { .min = 11, .max = 156 },
.p1 = { .min = 2, .max = 3 },
.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
};
static const intel_limit_t intel_limits_chv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 540000 * 5},
.vco = { .min = 4800000, .max = 6480000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
.m2 = { .min = 24 << 22, .max = 175 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 14 },
};
static const intel_limit_t intel_limits_bxt = {
/* FIXME: find real dot limits */
.dot = { .min = 0, .max = INT_MAX },
.vco = { .min = 4800000, .max = 6700000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
/* FIXME: find real m2 limits */
.m2 = { .min = 2 << 22, .max = 255 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 20 },
};
static bool
needs_modeset(struct drm_crtc_state *state)
{
return drm_atomic_crtc_needs_modeset(state);
}
/**
* Returns whether any output on the specified pipe is of the specified type
*/
bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
{
struct drm_device *dev = crtc->base.dev;
struct intel_encoder *encoder;
for_each_encoder_on_crtc(dev, &crtc->base, encoder)
if (encoder->type == type)
return true;
return false;
}
/**
* Returns whether any output on the specified pipe will have the specified
* type after a staged modeset is complete, i.e., the same as
* intel_pipe_has_type() but looking at encoder->new_crtc instead of
* encoder->crtc.
*/
static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
int type)
{
struct drm_atomic_state *state = crtc_state->base.state;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
struct intel_encoder *encoder;
int i, num_connectors = 0;
for_each_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != crtc_state->base.crtc)
continue;
num_connectors++;
encoder = to_intel_encoder(connector_state->best_encoder);
if (encoder->type == type)
return true;
}
WARN_ON(num_connectors == 0);
return false;
}
static const intel_limit_t *
intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
const intel_limit_t *limit;
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_is_dual_link_lvds(dev)) {
if (refclk == 100000)
limit = &intel_limits_ironlake_dual_lvds_100m;
else
limit = &intel_limits_ironlake_dual_lvds;
} else {
if (refclk == 100000)
limit = &intel_limits_ironlake_single_lvds_100m;
else
limit = &intel_limits_ironlake_single_lvds;
}
} else
limit = &intel_limits_ironlake_dac;
return limit;
}
static const intel_limit_t *
intel_g4x_limit(struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
const intel_limit_t *limit;
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_is_dual_link_lvds(dev))
limit = &intel_limits_g4x_dual_channel_lvds;
else
limit = &intel_limits_g4x_single_channel_lvds;
} else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
limit = &intel_limits_g4x_hdmi;
} else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
limit = &intel_limits_g4x_sdvo;
} else /* The option is for other outputs */
limit = &intel_limits_i9xx_sdvo;
return limit;
}
static const intel_limit_t *
intel_limit(struct intel_crtc_state *crtc_state, int refclk)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
const intel_limit_t *limit;
if (IS_BROXTON(dev))
limit = &intel_limits_bxt;
else if (HAS_PCH_SPLIT(dev))
limit = intel_ironlake_limit(crtc_state, refclk);
else if (IS_G4X(dev)) {
limit = intel_g4x_limit(crtc_state);
} else if (IS_PINEVIEW(dev)) {
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
limit = &intel_limits_pineview_lvds;
else
limit = &intel_limits_pineview_sdvo;
} else if (IS_CHERRYVIEW(dev)) {
limit = &intel_limits_chv;
} else if (IS_VALLEYVIEW(dev)) {
limit = &intel_limits_vlv;
} else if (!IS_GEN2(dev)) {
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
limit = &intel_limits_i9xx_lvds;
else
limit = &intel_limits_i9xx_sdvo;
} else {
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
limit = &intel_limits_i8xx_lvds;
else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
limit = &intel_limits_i8xx_dvo;
else
limit = &intel_limits_i8xx_dac;
}
return limit;
}
/*
* Platform specific helpers to calculate the port PLL loopback- (clock.m),
* and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
* (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
* The helpers' return value is the rate of the clock that is fed to the
* display engine's pipe which can be the above fast dot clock rate or a
* divided-down version of it.
*/
/* m1 is reserved as 0 in Pineview, n is a ring counter */
static int pnv_calc_dpll_params(int refclk, intel_clock_t *clock)
{
clock->m = clock->m2 + 2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
{
return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
}
static int i9xx_calc_dpll_params(int refclk, intel_clock_t *clock)
{
clock->m = i9xx_dpll_compute_m(clock);
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static int vlv_calc_dpll_params(int refclk, intel_clock_t *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
int chv_calc_dpll_params(int refclk, intel_clock_t *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
clock->n << 22);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
#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.
*/
static bool intel_PLL_is_valid(struct drm_device *dev,
const intel_limit_t *limit,
const intel_clock_t *clock)
{
if (clock->n < limit->n.min || limit->n.max < clock->n)
INTELPllInvalid("n out of range\n");
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
INTELPllInvalid("p1 out of range\n");
if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
INTELPllInvalid("m2 out of range\n");
if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
INTELPllInvalid("m1 out of range\n");
if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) &&
!IS_CHERRYVIEW(dev) && !IS_BROXTON(dev))
if (clock->m1 <= clock->m2)
INTELPllInvalid("m1 <= m2\n");
if (!IS_VALLEYVIEW(dev) && !IS_CHERRYVIEW(dev) && !IS_BROXTON(dev)) {
if (clock->p < limit->p.min || limit->p.max < clock->p)
INTELPllInvalid("p out of range\n");
if (clock->m < limit->m.min || limit->m.max < clock->m)
INTELPllInvalid("m out of range\n");
}
if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
INTELPllInvalid("vco out of range\n");
/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
* connector, etc., rather than just a single range.
*/
if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
INTELPllInvalid("dot out of range\n");
return true;
}
static int
i9xx_select_p2_div(const intel_limit_t *limit,
const struct intel_crtc_state *crtc_state,
int target)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
/*
* For LVDS just rely on its current settings for dual-channel.
* We haven't figured out how to reliably set up different
* single/dual channel state, if we even can.
*/
if (intel_is_dual_link_lvds(dev))
return limit->p2.p2_fast;
else
return limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
return limit->p2.p2_slow;
else
return limit->p2.p2_fast;
}
}
static bool
i9xx_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, intel_clock_t *match_clock,
intel_clock_t *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
intel_clock_t clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
if (clock.m2 >= clock.m1)
break;
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
static bool
pnv_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, intel_clock_t *match_clock,
intel_clock_t *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
intel_clock_t clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
pnv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
static bool
g4x_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, intel_clock_t *match_clock,
intel_clock_t *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
intel_clock_t clock;
int max_n;
bool found = false;
/* approximately equals target * 0.00585 */
int err_most = (target >> 8) + (target >> 9);
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
max_n = limit->n.max;
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
/* based on hardware requirement, prefere larger m1,m2 */
for (clock.m1 = limit->m1.max;
clock.m1 >= limit->m1.min; clock.m1--) {
for (clock.m2 = limit->m2.max;
clock.m2 >= limit->m2.min; clock.m2--) {
for (clock.p1 = limit->p1.max;
clock.p1 >= limit->p1.min; clock.p1--) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err_most) {
*best_clock = clock;
err_most = this_err;
max_n = clock.n;
found = true;
}
}
}
}
}
return found;
}
/*
* Check if the calculated PLL configuration is more optimal compared to the
* best configuration and error found so far. Return the calculated error.
*/
static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
const intel_clock_t *calculated_clock,
const intel_clock_t *best_clock,
unsigned int best_error_ppm,
unsigned int *error_ppm)
{
/*
* For CHV ignore the error and consider only the P value.
* Prefer a bigger P value based on HW requirements.
*/
if (IS_CHERRYVIEW(dev)) {
*error_ppm = 0;
return calculated_clock->p > best_clock->p;
}
if (WARN_ON_ONCE(!target_freq))
return false;
*error_ppm = div_u64(1000000ULL *
abs(target_freq - calculated_clock->dot),
target_freq);
/*
* Prefer a better P value over a better (smaller) error if the error
* is small. Ensure this preference for future configurations too by
* setting the error to 0.
*/
if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
*error_ppm = 0;
return true;
}
return *error_ppm + 10 < best_error_ppm;
}
static bool
vlv_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, intel_clock_t *match_clock,
intel_clock_t *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
intel_clock_t clock;
unsigned int bestppm = 1000000;
/* min update 19.2 MHz */
int max_n = min(limit->n.max, refclk / 19200);
bool found = false;
target *= 5; /* fast clock */
memset(best_clock, 0, sizeof(*best_clock));
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
clock.p = clock.p1 * clock.p2;
/* based on hardware requirement, prefer bigger m1,m2 values */
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
unsigned int ppm;
clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
refclk * clock.m1);
vlv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit,
&clock))
continue;
if (!vlv_PLL_is_optimal(dev, target,
&clock,
best_clock,
bestppm, &ppm))
continue;
*best_clock = clock;
bestppm = ppm;
found = true;
}
}
}
}
return found;
}
static bool
chv_find_best_dpll(const intel_limit_t *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, intel_clock_t *match_clock,
intel_clock_t *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
unsigned int best_error_ppm;
intel_clock_t clock;
uint64_t m2;
int found = false;
memset(best_clock, 0, sizeof(*best_clock));
best_error_ppm = 1000000;
/*
* Based on hardware doc, the n always set to 1, and m1 always
* set to 2. If requires to support 200Mhz refclk, we need to
* revisit this because n may not 1 anymore.
*/
clock.n = 1, clock.m1 = 2;
target *= 5; /* fast clock */
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast;
clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
unsigned int error_ppm;
clock.p = clock.p1 * clock.p2;
m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
clock.n) << 22, refclk * clock.m1);
if (m2 > INT_MAX/clock.m1)
continue;
clock.m2 = m2;
chv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(dev, limit, &clock))
continue;
if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
best_error_ppm, &error_ppm))
continue;
*best_clock = clock;
best_error_ppm = error_ppm;
found = true;
}
}
return found;
}
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
intel_clock_t *best_clock)
{
int refclk = i9xx_get_refclk(crtc_state, 0);
return chv_find_best_dpll(intel_limit(crtc_state, refclk), crtc_state,
target_clock, refclk, NULL, best_clock);
}
bool intel_crtc_active(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
/* Be paranoid as we can arrive here with only partial
* state retrieved from the hardware during setup.
*
* We can ditch the adjusted_mode.crtc_clock check as soon
* as Haswell has gained clock readout/fastboot support.
*
* We can ditch the crtc->primary->fb check as soon as we can
* properly reconstruct framebuffers.
*
* FIXME: The intel_crtc->active here should be switched to
* crtc->state->active once we have proper CRTC states wired up
* for atomic.
*/
return intel_crtc->active && crtc->primary->state->fb &&
intel_crtc->config->base.adjusted_mode.crtc_clock;
}
enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
return intel_crtc->config->cpu_transcoder;
}
static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
i915_reg_t reg = PIPEDSL(pipe);
u32 line1, line2;
u32 line_mask;
if (IS_GEN2(dev))
line_mask = DSL_LINEMASK_GEN2;
else
line_mask = DSL_LINEMASK_GEN3;
line1 = I915_READ(reg) & line_mask;
msleep(5);
line2 = I915_READ(reg) & line_mask;
return line1 == line2;
}
/*
* intel_wait_for_pipe_off - wait for pipe to turn off
* @crtc: crtc whose pipe to wait for
*
* After disabling a pipe, we can't wait for vblank in the usual way,
* spinning on the vblank interrupt status bit, since we won't actually
* see an interrupt when the pipe is disabled.
*
* On Gen4 and above:
* wait for the pipe register state bit to turn off
*
* Otherwise:
* wait for the display line value to settle (it usually
* ends up stopping at the start of the next frame).
*
*/
static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pipe = crtc->pipe;
if (INTEL_INFO(dev)->gen >= 4) {
i915_reg_t reg = PIPECONF(cpu_transcoder);
/* Wait for the Pipe State to go off */
if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
100))
WARN(1, "pipe_off wait timed out\n");
} else {
/* Wait for the display line to settle */
if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
WARN(1, "pipe_off wait timed out\n");
}
}
static const char *state_string(bool enabled)
{
return enabled ? "on" : "off";
}
/* Only for pre-ILK configs */
void assert_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(DPLL(pipe));
cur_state = !!(val & DPLL_VCO_ENABLE);
I915_STATE_WARN(cur_state != state,
"PLL state assertion failure (expected %s, current %s)\n",
state_string(state), state_string(cur_state));
}
/* XXX: the dsi pll is shared between MIPI DSI ports */
static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
{
u32 val;
bool cur_state;
mutex_lock(&dev_priv->sb_lock);
val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
mutex_unlock(&dev_priv->sb_lock);
cur_state = val & DSI_PLL_VCO_EN;
I915_STATE_WARN(cur_state != state,
"DSI PLL state assertion failure (expected %s, current %s)\n",
state_string(state), state_string(cur_state));
}
#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
struct intel_shared_dpll *
intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
if (crtc->config->shared_dpll < 0)
return NULL;
return &dev_priv->shared_dplls[crtc->config->shared_dpll];
}
/* For ILK+ */
void assert_shared_dpll(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
bool state)
{
bool cur_state;
struct intel_dpll_hw_state hw_state;
if (WARN (!pll,
"asserting DPLL %s with no DPLL\n", state_string(state)))
return;
cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
I915_STATE_WARN(cur_state != state,
"%s assertion failure (expected %s, current %s)\n",
pll->name, state_string(state), state_string(cur_state));
}
static void assert_fdi_tx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
if (HAS_DDI(dev_priv->dev)) {
/* DDI does not have a specific FDI_TX register */
u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
} else {
u32 val = I915_READ(FDI_TX_CTL(pipe));
cur_state = !!(val & FDI_TX_ENABLE);
}
I915_STATE_WARN(cur_state != state,
"FDI TX state assertion failure (expected %s, current %s)\n",
state_string(state), state_string(cur_state));
}
#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
static void assert_fdi_rx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX state assertion failure (expected %s, current %s)\n",
state_string(state), state_string(cur_state));
}
#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
/* ILK FDI PLL is always enabled */
if (INTEL_INFO(dev_priv->dev)->gen == 5)
return;
/* On Haswell, DDI ports are responsible for the FDI PLL setup */
if (HAS_DDI(dev_priv->dev))
return;
val = I915_READ(FDI_TX_CTL(pipe));
I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
}
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_PLL_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX PLL assertion failure (expected %s, current %s)\n",
state_string(state), state_string(cur_state));
}
void assert_panel_unlocked(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = dev_priv->dev;
i915_reg_t pp_reg;
u32 val;
enum pipe panel_pipe = PIPE_A;
bool locked = true;
if (WARN_ON(HAS_DDI(dev)))
return;
if (HAS_PCH_SPLIT(dev)) {
u32 port_sel;
pp_reg = PCH_PP_CONTROL;
port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
if (port_sel == PANEL_PORT_SELECT_LVDS &&
I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
panel_pipe = PIPE_B;
/* XXX: else fix for eDP */
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
/* presumably write lock depends on pipe, not port select */
pp_reg = VLV_PIPE_PP_CONTROL(pipe);
panel_pipe = pipe;
} else {
pp_reg = PP_CONTROL;
if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
panel_pipe = PIPE_B;
}
val = I915_READ(pp_reg);
if (!(val & PANEL_POWER_ON) ||
((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
locked = false;
I915_STATE_WARN(panel_pipe == pipe && locked,
"panel assertion failure, pipe %c regs locked\n",
pipe_name(pipe));
}
static void assert_cursor(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
struct drm_device *dev = dev_priv->dev;
bool cur_state;
if (IS_845G(dev) || IS_I865G(dev))
cur_state = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
else
cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
I915_STATE_WARN(cur_state != state,
"cursor on pipe %c assertion failure (expected %s, current %s)\n",
pipe_name(pipe), state_string(state), state_string(cur_state));
}
#define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
#define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
void assert_pipe(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
/* if we need the pipe quirk it must be always on */
if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
state = true;
if (!intel_display_power_is_enabled(dev_priv,
POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
cur_state = false;
} else {
u32 val = I915_READ(PIPECONF(cpu_transcoder));
cur_state = !!(val & PIPECONF_ENABLE);
}
I915_STATE_WARN(cur_state != state,
"pipe %c assertion failure (expected %s, current %s)\n",
pipe_name(pipe), state_string(state), state_string(cur_state));
}
static void assert_plane(struct drm_i915_private *dev_priv,
enum plane plane, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(DSPCNTR(plane));
cur_state = !!(val & DISPLAY_PLANE_ENABLE);
I915_STATE_WARN(cur_state != state,
"plane %c assertion failure (expected %s, current %s)\n",
plane_name(plane), state_string(state), state_string(cur_state));
}
#define assert_plane_enabled(d, p) assert_plane(d, p, true)
#define assert_plane_disabled(d, p) assert_plane(d, p, false)
static void assert_planes_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = dev_priv->dev;
int i;
/* Primary planes are fixed to pipes on gen4+ */
if (INTEL_INFO(dev)->gen >= 4) {
u32 val = I915_READ(DSPCNTR(pipe));
I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
"plane %c assertion failure, should be disabled but not\n",
plane_name(pipe));
return;
}
/* Need to check both planes against the pipe */
for_each_pipe(dev_priv, i) {
u32 val = I915_READ(DSPCNTR(i));
enum pipe cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
DISPPLANE_SEL_PIPE_SHIFT;
I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
"plane %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(i), pipe_name(pipe));
}
}
static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = dev_priv->dev;
int sprite;
if (INTEL_INFO(dev)->gen >= 9) {
for_each_sprite(dev_priv, pipe, sprite) {
u32 val = I915_READ(PLANE_CTL(pipe, sprite));
I915_STATE_WARN(val & PLANE_CTL_ENABLE,
"plane %d assertion failure, should be off on pipe %c but is still active\n",
sprite, pipe_name(pipe));
}
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
for_each_sprite(dev_priv, pipe, sprite) {
u32 val = I915_READ(SPCNTR(pipe, sprite));
I915_STATE_WARN(val & SP_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
sprite_name(pipe, sprite), pipe_name(pipe));
}
} else if (INTEL_INFO(dev)->gen >= 7) {
u32 val = I915_READ(SPRCTL(pipe));
I915_STATE_WARN(val & SPRITE_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(pipe), pipe_name(pipe));
} else if (INTEL_INFO(dev)->gen >= 5) {
u32 val = I915_READ(DVSCNTR(pipe));
I915_STATE_WARN(val & DVS_ENABLE,
"sprite %c assertion failure, should be off on pipe %c but is still active\n",
plane_name(pipe), pipe_name(pipe));
}
}
static void assert_vblank_disabled(struct drm_crtc *crtc)
{
if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
drm_crtc_vblank_put(crtc);
}
static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
{
u32 val;
bool enabled;
I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
val = I915_READ(PCH_DREF_CONTROL);
enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
DREF_SUPERSPREAD_SOURCE_MASK));
I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
}
static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
bool enabled;
val = I915_READ(PCH_TRANSCONF(pipe));
enabled = !!(val & TRANS_ENABLE);
I915_STATE_WARN(enabled,
"transcoder assertion failed, should be off on pipe %c but is still active\n",
pipe_name(pipe));
}
static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 port_sel, u32 val)
{
if ((val & DP_PORT_EN) == 0)
return false;
if (HAS_PCH_CPT(dev_priv->dev)) {
u32 trans_dp_ctl = I915_READ(TRANS_DP_CTL(pipe));
if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
return false;
} else if (IS_CHERRYVIEW(dev_priv->dev)) {
if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
return false;
} else {
if ((val & DP_PIPE_MASK) != (pipe << 30))
return false;
}
return true;
}
static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & SDVO_ENABLE) == 0)
return false;
if (HAS_PCH_CPT(dev_priv->dev)) {
if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
return false;
} else if (IS_CHERRYVIEW(dev_priv->dev)) {
if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
return false;
} else {
if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
return false;
}
return true;
}
static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & LVDS_PORT_EN) == 0)
return false;
if (HAS_PCH_CPT(dev_priv->dev)) {
if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
return false;
} else {
if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
return false;
}
return true;
}
static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe, u32 val)
{
if ((val & ADPA_DAC_ENABLE) == 0)
return false;
if (HAS_PCH_CPT(dev_priv->dev)) {
if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
return false;
} else {
if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
return false;
}
return true;
}
static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, i915_reg_t reg,
u32 port_sel)
{
u32 val = I915_READ(reg);
I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
i915_mmio_reg_offset(reg), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
&& (val & DP_PIPEB_SELECT),
"IBX PCH dp port still using transcoder B\n");
}
static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, i915_reg_t reg)
{
u32 val = I915_READ(reg);
I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
"PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
i915_mmio_reg_offset(reg), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
&& (val & SDVO_PIPE_B_SELECT),
"IBX PCH hdmi port still using transcoder B\n");
}
static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
val = I915_READ(PCH_ADPA);
I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
"PCH VGA enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
val = I915_READ(PCH_LVDS);
I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
"PCH LVDS enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
}
static void vlv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
i915_reg_t reg = DPLL(crtc->pipe);
u32 dpll = pipe_config->dpll_hw_state.dpll;
assert_pipe_disabled(dev_priv, crtc->pipe);
/* PLL is protected by panel, make sure we can write it */
if (IS_MOBILE(dev_priv->dev))
assert_panel_unlocked(dev_priv, crtc->pipe);
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150);
if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(crtc->pipe));
/* We do this three times for luck */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
}
static void chv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 tmp;
assert_pipe_disabled(dev_priv, crtc->pipe);
mutex_lock(&dev_priv->sb_lock);
/* Enable back the 10bit clock to display controller */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
tmp |= DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
mutex_unlock(&dev_priv->sb_lock);
/*
* Need to wait > 100ns between dclkp clock enable bit and PLL enable.
*/
udelay(1);
/* Enable PLL */
I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
/* Check PLL is locked */
if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
DRM_ERROR("PLL %d failed to lock\n", pipe);
/* not sure when this should be written */
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
}
static int intel_num_dvo_pipes(struct drm_device *dev)
{
struct intel_crtc *crtc;
int count = 0;
for_each_intel_crtc(dev, crtc)
count += crtc->base.state->active &&
intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
return count;
}
static void i9xx_enable_pll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
i915_reg_t reg = DPLL(crtc->pipe);
u32 dpll = crtc->config->dpll_hw_state.dpll;
assert_pipe_disabled(dev_priv, crtc->pipe);
/* No really, not for ILK+ */
BUG_ON(INTEL_INFO(dev)->gen >= 5);
/* PLL is protected by panel, make sure we can write it */
if (IS_MOBILE(dev) && !IS_I830(dev))
assert_panel_unlocked(dev_priv, crtc->pipe);
/* Enable DVO 2x clock on both PLLs if necessary */
if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
/*
* It appears to be important that we don't enable this
* for the current pipe before otherwise configuring the
* PLL. No idea how this should be handled if multiple
* DVO outputs are enabled simultaneosly.
*/
dpll |= DPLL_DVO_2X_MODE;
I915_WRITE(DPLL(!crtc->pipe),
I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
}
/*
* Apparently we need to have VGA mode enabled prior to changing
* the P1/P2 dividers. Otherwise the DPLL will keep using the old
* dividers, even though the register value does change.
*/
I915_WRITE(reg, 0);
I915_WRITE(reg, dpll);
/* Wait for the clocks to stabilize. */
POSTING_READ(reg);
udelay(150);
if (INTEL_INFO(dev)->gen >= 4) {
I915_WRITE(DPLL_MD(crtc->pipe),
crtc->config->dpll_hw_state.dpll_md);
} else {
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
*
* So write it again.
*/
I915_WRITE(reg, dpll);
}
/* We do this three times for luck */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
}
/**
* i9xx_disable_pll - disable a PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to disable
*
* Disable the PLL for @pipe, making sure the pipe is off first.
*
* Note! This is for pre-ILK only.
*/
static void i9xx_disable_pll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe = crtc->pipe;
/* Disable DVO 2x clock on both PLLs if necessary */
if (IS_I830(dev) &&
intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
!intel_num_dvo_pipes(dev)) {
I915_WRITE(DPLL(PIPE_B),
I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
I915_WRITE(DPLL(PIPE_A),
I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
}
/* Don't disable pipe or pipe PLLs if needed */
if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
return;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
POSTING_READ(DPLL(pipe));
}
static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
/*
* Leave integrated clock source and reference clock enabled for pipe B.
* The latter is needed for VGA hotplug / manual detection.
*/
val = DPLL_VGA_MODE_DIS;
if (pipe == PIPE_B)
val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REF_CLK_ENABLE_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
}
static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
/* Set PLL en = 0 */
val = DPLL_SSC_REF_CLK_CHV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
mutex_lock(&dev_priv->sb_lock);
/* Disable 10bit clock to display controller */
val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
val &= ~DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
mutex_unlock(&dev_priv->sb_lock);
}
void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
struct intel_digital_port *dport,
unsigned int expected_mask)
{
u32 port_mask;
i915_reg_t dpll_reg;
switch (dport->port) {
case PORT_B:
port_mask = DPLL_PORTB_READY_MASK;
dpll_reg = DPLL(0);
break;
case PORT_C:
port_mask = DPLL_PORTC_READY_MASK;
dpll_reg = DPLL(0);
expected_mask <<= 4;
break;
case PORT_D:
port_mask = DPLL_PORTD_READY_MASK;
dpll_reg = DPIO_PHY_STATUS;
break;
default:
BUG();
}
if (wait_for((I915_READ(dpll_reg) & port_mask) == expected_mask, 1000))
WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
port_name(dport->port), I915_READ(dpll_reg) & port_mask, expected_mask);
}
static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
if (WARN_ON(pll == NULL))
return;
WARN_ON(!pll->config.crtc_mask);
if (pll->active == 0) {
DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
WARN_ON(pll->on);
assert_shared_dpll_disabled(dev_priv, pll);
pll->mode_set(dev_priv, pll);
}
}
/**
* intel_enable_shared_dpll - enable PCH PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to enable
*
* The PCH PLL needs to be enabled before the PCH transcoder, since it
* drives the transcoder clock.
*/
static void intel_enable_shared_dpll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
if (WARN_ON(pll == NULL))
return;
if (WARN_ON(pll->config.crtc_mask == 0))
return;
DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
pll->name, pll->active, pll->on,
crtc->base.base.id);
if (pll->active++) {
WARN_ON(!pll->on);
assert_shared_dpll_enabled(dev_priv, pll);
return;
}
WARN_ON(pll->on);
intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
DRM_DEBUG_KMS("enabling %s\n", pll->name);
pll->enable(dev_priv, pll);
pll->on = true;
}
static void intel_disable_shared_dpll(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
/* PCH only available on ILK+ */
if (INTEL_INFO(dev)->gen < 5)
return;
if (pll == NULL)
return;
if (WARN_ON(!(pll->config.crtc_mask & (1 << drm_crtc_index(&crtc->base)))))
return;
DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
pll->name, pll->active, pll->on,
crtc->base.base.id);
if (WARN_ON(pll->active == 0)) {
assert_shared_dpll_disabled(dev_priv, pll);
return;
}
assert_shared_dpll_enabled(dev_priv, pll);
WARN_ON(!pll->on);
if (--pll->active)
return;
DRM_DEBUG_KMS("disabling %s\n", pll->name);
pll->disable(dev_priv, pll);
pll->on = false;
intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
}
static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = dev_priv->dev;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
i915_reg_t reg;
uint32_t val, pipeconf_val;
/* PCH only available on ILK+ */
BUG_ON(!HAS_PCH_SPLIT(dev));
/* Make sure PCH DPLL is enabled */
assert_shared_dpll_enabled(dev_priv,
intel_crtc_to_shared_dpll(intel_crtc));
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, pipe);
assert_fdi_rx_enabled(dev_priv, pipe);
if (HAS_PCH_CPT(dev)) {
/* Workaround: Set the timing override bit before enabling the
* pch transcoder. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
pipeconf_val = I915_READ(PIPECONF(pipe));
if (HAS_PCH_IBX(dev_priv->dev)) {
/*
* Make the BPC in transcoder be consistent with
* that in pipeconf reg. For HDMI we must use 8bpc
* here for both 8bpc and 12bpc.
*/
val &= ~PIPECONF_BPC_MASK;
if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_HDMI))
val |= PIPECONF_8BPC;
else
val |= pipeconf_val & PIPECONF_BPC_MASK;
}
val &= ~TRANS_INTERLACE_MASK;
if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
if (HAS_PCH_IBX(dev_priv->dev) &&
intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
val |= TRANS_LEGACY_INTERLACED_ILK;
else
val |= TRANS_INTERLACED;
else
val |= TRANS_PROGRESSIVE;
I915_WRITE(reg, val | TRANS_ENABLE);
if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
}
static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
u32 val, pipeconf_val;
/* PCH only available on ILK+ */
BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
/* Workaround: set timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
val = TRANS_ENABLE;
pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
PIPECONF_INTERLACED_ILK)
val |= TRANS_INTERLACED;
else
val |= TRANS_PROGRESSIVE;
I915_WRITE(LPT_TRANSCONF, val);
if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
DRM_ERROR("Failed to enable PCH transcoder\n");
}
static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct drm_device *dev = dev_priv->dev;
i915_reg_t reg;
uint32_t val;
/* FDI relies on the transcoder */
assert_fdi_tx_disabled(dev_priv, pipe);
assert_fdi_rx_disabled(dev_priv, pipe);
/* Ports must be off as well */
assert_pch_ports_disabled(dev_priv, pipe);
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
val &= ~TRANS_ENABLE;
I915_WRITE(reg, val);
/* wait for PCH transcoder off, transcoder state */
if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
if (HAS_PCH_CPT(dev)) {
/* Workaround: Clear the timing override chicken bit again. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
}
static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
{
u32 val;
val = I915_READ(LPT_TRANSCONF);
val &= ~TRANS_ENABLE;
I915_WRITE(LPT_TRANSCONF, val);
/* wait for PCH transcoder off, transcoder state */
if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
DRM_ERROR("Failed to disable PCH transcoder\n");
/* Workaround: clear timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
}
/**
* intel_enable_pipe - enable a pipe, asserting requirements
* @crtc: crtc responsible for the pipe
*
* Enable @crtc's pipe, making sure that various hardware specific requirements
* are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
*/
static void intel_enable_pipe(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe = crtc->pipe;
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pch_transcoder;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
assert_planes_disabled(dev_priv, pipe);
assert_cursor_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
if (HAS_PCH_LPT(dev_priv->dev))
pch_transcoder = TRANSCODER_A;
else
pch_transcoder = pipe;
/*
* A pipe without a PLL won't actually be able to drive bits from
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
* need the check.
*/
if (HAS_GMCH_DISPLAY(dev_priv->dev))
if (crtc->config->has_dsi_encoder)
assert_dsi_pll_enabled(dev_priv);
else
assert_pll_enabled(dev_priv, pipe);
else {
if (crtc->config->has_pch_encoder) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
assert_fdi_tx_pll_enabled(dev_priv,
(enum pipe) cpu_transcoder);
}
/* FIXME: assert CPU port conditions for SNB+ */
}
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if (val & PIPECONF_ENABLE) {
WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
return;
}
I915_WRITE(reg, val | PIPECONF_ENABLE);
POSTING_READ(reg);
}
/**
* intel_disable_pipe - disable a pipe, asserting requirements
* @crtc: crtc whose pipes is to be disabled
*
* Disable the pipe of @crtc, making sure that various hardware
* specific requirements are met, if applicable, e.g. plane
* disabled, panel fitter off, etc.
*
* Will wait until the pipe has shut down before returning.
*/
static void intel_disable_pipe(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
/*
* Make sure planes won't keep trying to pump pixels to us,
* or we might hang the display.
*/
assert_planes_disabled(dev_priv, pipe);
assert_cursor_disabled(dev_priv, pipe);
assert_sprites_disabled(dev_priv, pipe);
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if ((val & PIPECONF_ENABLE) == 0)
return;
/*
* Double wide has implications for planes
* so best keep it disabled when not needed.
*/
if (crtc->config->double_wide)
val &= ~PIPECONF_DOUBLE_WIDE;
/* Don't disable pipe or pipe PLLs if needed */
if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
!(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
val &= ~PIPECONF_ENABLE;
I915_WRITE(reg, val);
if ((val & PIPECONF_ENABLE) == 0)
intel_wait_for_pipe_off(crtc);
}
static bool need_vtd_wa(struct drm_device *dev)
{
#ifdef CONFIG_INTEL_IOMMU
if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
return true;
#endif
return false;
}
unsigned int
intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
uint64_t fb_format_modifier, unsigned int plane)
{
unsigned int tile_height;
uint32_t pixel_bytes;
switch (fb_format_modifier) {
case DRM_FORMAT_MOD_NONE:
tile_height = 1;
break;
case I915_FORMAT_MOD_X_TILED:
tile_height = IS_GEN2(dev) ? 16 : 8;
break;
case I915_FORMAT_MOD_Y_TILED:
tile_height = 32;
break;
case I915_FORMAT_MOD_Yf_TILED:
pixel_bytes = drm_format_plane_cpp(pixel_format, plane);
switch (pixel_bytes) {
default:
case 1:
tile_height = 64;
break;
case 2:
case 4:
tile_height = 32;
break;
case 8:
tile_height = 16;
break;
case 16:
WARN_ONCE(1,
"128-bit pixels are not supported for display!");
tile_height = 16;
break;
}
break;
default:
MISSING_CASE(fb_format_modifier);
tile_height = 1;
break;
}
return tile_height;
}
unsigned int
intel_fb_align_height(struct drm_device *dev, unsigned int height,
uint32_t pixel_format, uint64_t fb_format_modifier)
{
return ALIGN(height, intel_tile_height(dev, pixel_format,
fb_format_modifier, 0));
}
static void
intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
const struct drm_plane_state *plane_state)
{
struct intel_rotation_info *info = &view->params.rotation_info;
unsigned int tile_height, tile_pitch;
*view = i915_ggtt_view_normal;
if (!plane_state)
return;
if (!intel_rotation_90_or_270(plane_state->rotation))
return;
*view = i915_ggtt_view_rotated;
info->height = fb->height;
info->pixel_format = fb->pixel_format;
info->pitch = fb->pitches[0];
info->uv_offset = fb->offsets[1];
info->fb_modifier = fb->modifier[0];
tile_height = intel_tile_height(fb->dev, fb->pixel_format,
fb->modifier[0], 0);
tile_pitch = PAGE_SIZE / tile_height;
info->width_pages = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
info->height_pages = DIV_ROUND_UP(fb->height, tile_height);
info->size = info->width_pages * info->height_pages * PAGE_SIZE;
if (info->pixel_format == DRM_FORMAT_NV12) {
tile_height = intel_tile_height(fb->dev, fb->pixel_format,
fb->modifier[0], 1);
tile_pitch = PAGE_SIZE / tile_height;
info->width_pages_uv = DIV_ROUND_UP(fb->pitches[0], tile_pitch);
info->height_pages_uv = DIV_ROUND_UP(fb->height / 2,
tile_height);
info->size_uv = info->width_pages_uv * info->height_pages_uv *
PAGE_SIZE;
}
}
static unsigned int intel_linear_alignment(struct drm_i915_private *dev_priv)
{
if (INTEL_INFO(dev_priv)->gen >= 9)
return 256 * 1024;
else if (IS_BROADWATER(dev_priv) || IS_CRESTLINE(dev_priv) ||
IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
return 128 * 1024;
else if (INTEL_INFO(dev_priv)->gen >= 4)
return 4 * 1024;
else
return 0;
}
int
intel_pin_and_fence_fb_obj(struct drm_plane *plane,
struct drm_framebuffer *fb,
const struct drm_plane_state *plane_state)
{
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_ggtt_view view;
u32 alignment;
int ret;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
switch (fb->modifier[0]) {
case DRM_FORMAT_MOD_NONE:
alignment = intel_linear_alignment(dev_priv);
break;
case I915_FORMAT_MOD_X_TILED:
if (INTEL_INFO(dev)->gen >= 9)
alignment = 256 * 1024;
else {
/* pin() will align the object as required by fence */
alignment = 0;
}
break;
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
"Y tiling bo slipped through, driver bug!\n"))
return -EINVAL;
alignment = 1 * 1024 * 1024;
break;
default:
MISSING_CASE(fb->modifier[0]);
return -EINVAL;
}
intel_fill_fb_ggtt_view(&view, fb, plane_state);
/* Note that the w/a also requires 64 PTE of padding following the
* bo. We currently fill all unused PTE with the shadow page and so
* we should always have valid PTE following the scanout preventing
* the VT-d warning.
*/
if (need_vtd_wa(dev) && alignment < 256 * 1024)
alignment = 256 * 1024;
/*
* Global gtt pte registers are special registers which actually forward
* writes to a chunk of system memory. Which means that there is no risk
* that the register values disappear as soon as we call
* intel_runtime_pm_put(), so it is correct to wrap only the
* pin/unpin/fence and not more.
*/
intel_runtime_pm_get(dev_priv);
ret = i915_gem_object_pin_to_display_plane(obj, alignment,
&view);
if (ret)
goto err_pm;
/* Install a fence for tiled scan-out. Pre-i965 always needs a
* fence, whereas 965+ only requires a fence if using
* framebuffer compression. For simplicity, we always install
* a fence as the cost is not that onerous.
*/
if (view.type == I915_GGTT_VIEW_NORMAL) {
ret = i915_gem_object_get_fence(obj);
if (ret == -EDEADLK) {
/*
* -EDEADLK means there are no free fences
* no pending flips.
*
* This is propagated to atomic, but it uses
* -EDEADLK to force a locking recovery, so
* change the returned error to -EBUSY.
*/
ret = -EBUSY;
goto err_unpin;
} else if (ret)
goto err_unpin;
i915_gem_object_pin_fence(obj);
}
intel_runtime_pm_put(dev_priv);
return 0;
err_unpin:
i915_gem_object_unpin_from_display_plane(obj, &view);
err_pm:
intel_runtime_pm_put(dev_priv);
return ret;
}
static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
const struct drm_plane_state *plane_state)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct i915_ggtt_view view;
WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
intel_fill_fb_ggtt_view(&view, fb, plane_state);
if (view.type == I915_GGTT_VIEW_NORMAL)
i915_gem_object_unpin_fence(obj);
i915_gem_object_unpin_from_display_plane(obj, &view);
}
/* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
* is assumed to be a power-of-two. */
unsigned long intel_gen4_compute_page_offset(struct drm_i915_private *dev_priv,
int *x, int *y,
unsigned int tiling_mode,
unsigned int cpp,
unsigned int pitch)
{
if (tiling_mode != I915_TILING_NONE) {
unsigned int tile_rows, tiles;
tile_rows = *y / 8;
*y %= 8;
tiles = *x / (512/cpp);
*x %= 512/cpp;
return tile_rows * pitch * 8 + tiles * 4096;
} else {
unsigned int alignment = intel_linear_alignment(dev_priv) - 1;
unsigned int offset;
offset = *y * pitch + *x * cpp;
*y = (offset & alignment) / pitch;
*x = ((offset & alignment) - *y * pitch) / cpp;
return offset & ~alignment;
}
}
static int i9xx_format_to_fourcc(int format)
{
switch (format) {
case DISPPLANE_8BPP:
return DRM_FORMAT_C8;
case DISPPLANE_BGRX555:
return DRM_FORMAT_XRGB1555;
case DISPPLANE_BGRX565:
return DRM_FORMAT_RGB565;
default:
case DISPPLANE_BGRX888:
return DRM_FORMAT_XRGB8888;
case DISPPLANE_RGBX888:
return DRM_FORMAT_XBGR8888;
case DISPPLANE_BGRX101010:
return DRM_FORMAT_XRGB2101010;
case DISPPLANE_RGBX101010:
return DRM_FORMAT_XBGR2101010;
}
}
static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
{
switch (format) {
case PLANE_CTL_FORMAT_RGB_565:
return DRM_FORMAT_RGB565;
default:
case PLANE_CTL_FORMAT_XRGB_8888:
if (rgb_order) {
if (alpha)
return DRM_FORMAT_ABGR8888;
else
return DRM_FORMAT_XBGR8888;
} else {
if (alpha)
return DRM_FORMAT_ARGB8888;
else
return DRM_FORMAT_XRGB8888;
}
case PLANE_CTL_FORMAT_XRGB_2101010:
if (rgb_order)
return DRM_FORMAT_XBGR2101010;
else
return DRM_FORMAT_XRGB2101010;
}
}
static bool
intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_object *obj = NULL;
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
struct drm_framebuffer *fb = &plane_config->fb->base;
u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
u32 size_aligned = round_up(plane_config->base + plane_config->size,
PAGE_SIZE);
size_aligned -= base_aligned;
if (plane_config->size == 0)
return false;
/* If the FB is too big, just don't use it since fbdev is not very
* important and we should probably use that space with FBC or other
* features. */
if (size_aligned * 2 > dev_priv->gtt.stolen_usable_size)
return false;
obj = i915_gem_object_create_stolen_for_preallocated(dev,
base_aligned,
base_aligned,
size_aligned);
if (!obj)
return false;
obj->tiling_mode = plane_config->tiling;
if (obj->tiling_mode == I915_TILING_X)
obj->