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OpenCloudOS-Kernel/drivers/gpu/drm/gma500/cdv_intel_display.c

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/*
* Copyright © 2006-2011 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*/
#include <linux/i2c.h>
#include <linux/pm_runtime.h>
#include <drm/drmP.h>
#include "framebuffer.h"
#include "psb_drv.h"
#include "psb_intel_drv.h"
#include "psb_intel_reg.h"
#include "psb_intel_display.h"
#include "power.h"
#include "cdv_device.h"
struct cdv_intel_range_t {
int min, max;
};
struct cdv_intel_p2_t {
int dot_limit;
int p2_slow, p2_fast;
};
struct cdv_intel_clock_t {
/* given values */
int n;
int m1, m2;
int p1, p2;
/* derived values */
int dot;
int vco;
int m;
int p;
};
#define INTEL_P2_NUM 2
struct cdv_intel_limit_t {
struct cdv_intel_range_t dot, vco, n, m, m1, m2, p, p1;
struct cdv_intel_p2_t p2;
bool (*find_pll)(const struct cdv_intel_limit_t *, struct drm_crtc *,
int, int, struct cdv_intel_clock_t *);
};
static bool cdv_intel_find_best_PLL(const struct cdv_intel_limit_t *limit,
struct drm_crtc *crtc, int target, int refclk,
struct cdv_intel_clock_t *best_clock);
static bool cdv_intel_find_dp_pll(const struct cdv_intel_limit_t *limit, struct drm_crtc *crtc, int target,
int refclk,
struct cdv_intel_clock_t *best_clock);
#define CDV_LIMIT_SINGLE_LVDS_96 0
#define CDV_LIMIT_SINGLE_LVDS_100 1
#define CDV_LIMIT_DAC_HDMI_27 2
#define CDV_LIMIT_DAC_HDMI_96 3
#define CDV_LIMIT_DP_27 4
#define CDV_LIMIT_DP_100 5
static const struct cdv_intel_limit_t cdv_intel_limits[] = {
{ /* CDV_SINGLE_LVDS_96MHz */
.dot = {.min = 20000, .max = 115500},
.vco = {.min = 1800000, .max = 3600000},
.n = {.min = 2, .max = 6},
.m = {.min = 60, .max = 160},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 58, .max = 158},
.p = {.min = 28, .max = 140},
.p1 = {.min = 2, .max = 10},
.p2 = {.dot_limit = 200000,
.p2_slow = 14, .p2_fast = 14},
.find_pll = cdv_intel_find_best_PLL,
},
{ /* CDV_SINGLE_LVDS_100MHz */
.dot = {.min = 20000, .max = 115500},
.vco = {.min = 1800000, .max = 3600000},
.n = {.min = 2, .max = 6},
.m = {.min = 60, .max = 160},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 58, .max = 158},
.p = {.min = 28, .max = 140},
.p1 = {.min = 2, .max = 10},
/* The single-channel range is 25-112Mhz, and dual-channel
* is 80-224Mhz. Prefer single channel as much as possible.
*/
.p2 = {.dot_limit = 200000, .p2_slow = 14, .p2_fast = 14},
.find_pll = cdv_intel_find_best_PLL,
},
{ /* CDV_DAC_HDMI_27MHz */
.dot = {.min = 20000, .max = 400000},
.vco = {.min = 1809000, .max = 3564000},
.n = {.min = 1, .max = 1},
.m = {.min = 67, .max = 132},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 65, .max = 130},
.p = {.min = 5, .max = 90},
.p1 = {.min = 1, .max = 9},
.p2 = {.dot_limit = 225000, .p2_slow = 10, .p2_fast = 5},
.find_pll = cdv_intel_find_best_PLL,
},
{ /* CDV_DAC_HDMI_96MHz */
.dot = {.min = 20000, .max = 400000},
.vco = {.min = 1800000, .max = 3600000},
.n = {.min = 2, .max = 6},
.m = {.min = 60, .max = 160},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 58, .max = 158},
.p = {.min = 5, .max = 100},
.p1 = {.min = 1, .max = 10},
.p2 = {.dot_limit = 225000, .p2_slow = 10, .p2_fast = 5},
.find_pll = cdv_intel_find_best_PLL,
},
{ /* CDV_DP_27MHz */
.dot = {.min = 160000, .max = 272000},
.vco = {.min = 1809000, .max = 3564000},
.n = {.min = 1, .max = 1},
.m = {.min = 67, .max = 132},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 65, .max = 130},
.p = {.min = 5, .max = 90},
.p1 = {.min = 1, .max = 9},
.p2 = {.dot_limit = 225000, .p2_slow = 10, .p2_fast = 10},
.find_pll = cdv_intel_find_dp_pll,
},
{ /* CDV_DP_100MHz */
.dot = {.min = 160000, .max = 272000},
.vco = {.min = 1800000, .max = 3600000},
.n = {.min = 2, .max = 6},
.m = {.min = 60, .max = 164},
.m1 = {.min = 0, .max = 0},
.m2 = {.min = 58, .max = 162},
.p = {.min = 5, .max = 100},
.p1 = {.min = 1, .max = 10},
.p2 = {.dot_limit = 225000, .p2_slow = 10, .p2_fast = 10},
.find_pll = cdv_intel_find_dp_pll,
}
};
#define _wait_for(COND, MS, W) ({ \
unsigned long timeout__ = jiffies + msecs_to_jiffies(MS); \
int ret__ = 0; \
while (!(COND)) { \
if (time_after(jiffies, timeout__)) { \
ret__ = -ETIMEDOUT; \
break; \
} \
if (W && !in_dbg_master()) \
msleep(W); \
} \
ret__; \
})
#define wait_for(COND, MS) _wait_for(COND, MS, 1)
int cdv_sb_read(struct drm_device *dev, u32 reg, u32 *val)
{
int ret;
ret = wait_for((REG_READ(SB_PCKT) & SB_BUSY) == 0, 1000);
if (ret) {
DRM_ERROR("timeout waiting for SB to idle before read\n");
return ret;
}
REG_WRITE(SB_ADDR, reg);
REG_WRITE(SB_PCKT,
SET_FIELD(SB_OPCODE_READ, SB_OPCODE) |
SET_FIELD(SB_DEST_DPLL, SB_DEST) |
SET_FIELD(0xf, SB_BYTE_ENABLE));
ret = wait_for((REG_READ(SB_PCKT) & SB_BUSY) == 0, 1000);
if (ret) {
DRM_ERROR("timeout waiting for SB to idle after read\n");
return ret;
}
*val = REG_READ(SB_DATA);
return 0;
}
int cdv_sb_write(struct drm_device *dev, u32 reg, u32 val)
{
int ret;
static bool dpio_debug = true;
u32 temp;
if (dpio_debug) {
if (cdv_sb_read(dev, reg, &temp) == 0)
DRM_DEBUG_KMS("0x%08x: 0x%08x (before)\n", reg, temp);
DRM_DEBUG_KMS("0x%08x: 0x%08x\n", reg, val);
}
ret = wait_for((REG_READ(SB_PCKT) & SB_BUSY) == 0, 1000);
if (ret) {
DRM_ERROR("timeout waiting for SB to idle before write\n");
return ret;
}
REG_WRITE(SB_ADDR, reg);
REG_WRITE(SB_DATA, val);
REG_WRITE(SB_PCKT,
SET_FIELD(SB_OPCODE_WRITE, SB_OPCODE) |
SET_FIELD(SB_DEST_DPLL, SB_DEST) |
SET_FIELD(0xf, SB_BYTE_ENABLE));
ret = wait_for((REG_READ(SB_PCKT) & SB_BUSY) == 0, 1000);
if (ret) {
DRM_ERROR("timeout waiting for SB to idle after write\n");
return ret;
}
if (dpio_debug) {
if (cdv_sb_read(dev, reg, &temp) == 0)
DRM_DEBUG_KMS("0x%08x: 0x%08x (after)\n", reg, temp);
}
return 0;
}
/* Reset the DPIO configuration register. The BIOS does this at every
* mode set.
*/
void cdv_sb_reset(struct drm_device *dev)
{
REG_WRITE(DPIO_CFG, 0);
REG_READ(DPIO_CFG);
REG_WRITE(DPIO_CFG, DPIO_MODE_SELECT_0 | DPIO_CMN_RESET_N);
}
/* Unlike most Intel display engines, on Cedarview the DPLL registers
* are behind this sideband bus. They must be programmed while the
* DPLL reference clock is on in the DPLL control register, but before
* the DPLL is enabled in the DPLL control register.
*/
static int
cdv_dpll_set_clock_cdv(struct drm_device *dev, struct drm_crtc *crtc,
struct cdv_intel_clock_t *clock, bool is_lvds, u32 ddi_select)
{
struct psb_intel_crtc *psb_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_crtc->pipe;
u32 m, n_vco, p;
int ret = 0;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int ref_sfr = (pipe == 0) ? SB_REF_DPLLA : SB_REF_DPLLB;
u32 ref_value;
u32 lane_reg, lane_value;
cdv_sb_reset(dev);
REG_WRITE(dpll_reg, DPLL_SYNCLOCK_ENABLE | DPLL_VGA_MODE_DIS);
udelay(100);
/* Follow the BIOS and write the REF/SFR Register. Hardcoded value */
ref_value = 0x68A701;
cdv_sb_write(dev, SB_REF_SFR(pipe), ref_value);
/* We don't know what the other fields of these regs are, so
* leave them in place.
*/
/*
* The BIT 14:13 of 0x8010/0x8030 is used to select the ref clk
* for the pipe A/B. Display spec 1.06 has wrong definition.
* Correct definition is like below:
*
* refclka mean use clock from same PLL
*
* if DPLLA sets 01 and DPLLB sets 01, they use clock from their pll
*
* if DPLLA sets 01 and DPLLB sets 02, both use clk from DPLLA
*
*/
ret = cdv_sb_read(dev, ref_sfr, &ref_value);
if (ret)
return ret;
ref_value &= ~(REF_CLK_MASK);
/* use DPLL_A for pipeB on CRT/HDMI */
if (pipe == 1 && !is_lvds && !(ddi_select & DP_MASK)) {
DRM_DEBUG_KMS("use DPLLA for pipe B\n");
ref_value |= REF_CLK_DPLLA;
} else {
DRM_DEBUG_KMS("use their DPLL for pipe A/B\n");
ref_value |= REF_CLK_DPLL;
}
ret = cdv_sb_write(dev, ref_sfr, ref_value);
if (ret)
return ret;
ret = cdv_sb_read(dev, SB_M(pipe), &m);
if (ret)
return ret;
m &= ~SB_M_DIVIDER_MASK;
m |= ((clock->m2) << SB_M_DIVIDER_SHIFT);
ret = cdv_sb_write(dev, SB_M(pipe), m);
if (ret)
return ret;
ret = cdv_sb_read(dev, SB_N_VCO(pipe), &n_vco);
if (ret)
return ret;
/* Follow the BIOS to program the N_DIVIDER REG */
n_vco &= 0xFFFF;
n_vco |= 0x107;
n_vco &= ~(SB_N_VCO_SEL_MASK |
SB_N_DIVIDER_MASK |
SB_N_CB_TUNE_MASK);
n_vco |= ((clock->n) << SB_N_DIVIDER_SHIFT);
if (clock->vco < 2250000) {
n_vco |= (2 << SB_N_CB_TUNE_SHIFT);
n_vco |= (0 << SB_N_VCO_SEL_SHIFT);
} else if (clock->vco < 2750000) {
n_vco |= (1 << SB_N_CB_TUNE_SHIFT);
n_vco |= (1 << SB_N_VCO_SEL_SHIFT);
} else if (clock->vco < 3300000) {
n_vco |= (0 << SB_N_CB_TUNE_SHIFT);
n_vco |= (2 << SB_N_VCO_SEL_SHIFT);
} else {
n_vco |= (0 << SB_N_CB_TUNE_SHIFT);
n_vco |= (3 << SB_N_VCO_SEL_SHIFT);
}
ret = cdv_sb_write(dev, SB_N_VCO(pipe), n_vco);
if (ret)
return ret;
ret = cdv_sb_read(dev, SB_P(pipe), &p);
if (ret)
return ret;
p &= ~(SB_P2_DIVIDER_MASK | SB_P1_DIVIDER_MASK);
p |= SET_FIELD(clock->p1, SB_P1_DIVIDER);
switch (clock->p2) {
case 5:
p |= SET_FIELD(SB_P2_5, SB_P2_DIVIDER);
break;
case 10:
p |= SET_FIELD(SB_P2_10, SB_P2_DIVIDER);
break;
case 14:
p |= SET_FIELD(SB_P2_14, SB_P2_DIVIDER);
break;
case 7:
p |= SET_FIELD(SB_P2_7, SB_P2_DIVIDER);
break;
default:
DRM_ERROR("Bad P2 clock: %d\n", clock->p2);
return -EINVAL;
}
ret = cdv_sb_write(dev, SB_P(pipe), p);
if (ret)
return ret;
if (ddi_select) {
if ((ddi_select & DDI_MASK) == DDI0_SELECT) {
lane_reg = PSB_LANE0;
cdv_sb_read(dev, lane_reg, &lane_value);
lane_value &= ~(LANE_PLL_MASK);
lane_value |= LANE_PLL_ENABLE | LANE_PLL_PIPE(pipe);
cdv_sb_write(dev, lane_reg, lane_value);
lane_reg = PSB_LANE1;
cdv_sb_read(dev, lane_reg, &lane_value);
lane_value &= ~(LANE_PLL_MASK);
lane_value |= LANE_PLL_ENABLE | LANE_PLL_PIPE(pipe);
cdv_sb_write(dev, lane_reg, lane_value);
} else {
lane_reg = PSB_LANE2;
cdv_sb_read(dev, lane_reg, &lane_value);
lane_value &= ~(LANE_PLL_MASK);
lane_value |= LANE_PLL_ENABLE | LANE_PLL_PIPE(pipe);
cdv_sb_write(dev, lane_reg, lane_value);
lane_reg = PSB_LANE3;
cdv_sb_read(dev, lane_reg, &lane_value);
lane_value &= ~(LANE_PLL_MASK);
lane_value |= LANE_PLL_ENABLE | LANE_PLL_PIPE(pipe);
cdv_sb_write(dev, lane_reg, lane_value);
}
}
return 0;
}
/*
* Returns whether any encoder on the specified pipe is of the specified type
*/
static bool cdv_intel_pipe_has_type(struct drm_crtc *crtc, int type)
{
struct drm_device *dev = crtc->dev;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *l_entry;
list_for_each_entry(l_entry, &mode_config->connector_list, head) {
if (l_entry->encoder && l_entry->encoder->crtc == crtc) {
struct psb_intel_encoder *psb_intel_encoder =
psb_intel_attached_encoder(l_entry);
if (psb_intel_encoder->type == type)
return true;
}
}
return false;
}
static const struct cdv_intel_limit_t *cdv_intel_limit(struct drm_crtc *crtc,
int refclk)
{
const struct cdv_intel_limit_t *limit;
if (cdv_intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
/*
* Now only single-channel LVDS is supported on CDV. If it is
* incorrect, please add the dual-channel LVDS.
*/
if (refclk == 96000)
limit = &cdv_intel_limits[CDV_LIMIT_SINGLE_LVDS_96];
else
limit = &cdv_intel_limits[CDV_LIMIT_SINGLE_LVDS_100];
} else if (psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
psb_intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) {
if (refclk == 27000)
limit = &cdv_intel_limits[CDV_LIMIT_DP_27];
else
limit = &cdv_intel_limits[CDV_LIMIT_DP_100];
} else {
if (refclk == 27000)
limit = &cdv_intel_limits[CDV_LIMIT_DAC_HDMI_27];
else
limit = &cdv_intel_limits[CDV_LIMIT_DAC_HDMI_96];
}
return limit;
}
/* m1 is reserved as 0 in CDV, n is a ring counter */
static void cdv_intel_clock(struct drm_device *dev,
int refclk, struct cdv_intel_clock_t *clock)
{
clock->m = clock->m2 + 2;
clock->p = clock->p1 * clock->p2;
clock->vco = (refclk * clock->m) / clock->n;
clock->dot = clock->vco / clock->p;
}
#define INTELPllInvalid(s) { /* ErrorF (s) */; return false; }
static bool cdv_intel_PLL_is_valid(struct drm_crtc *crtc,
const struct cdv_intel_limit_t *limit,
struct cdv_intel_clock_t *clock)
{
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
INTELPllInvalid("p1 out of range\n");
if (clock->p < limit->p.min || limit->p.max < clock->p)
INTELPllInvalid("p out of range\n");
/* unnecessary to check the range of m(m1/M2)/n again */
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 bool cdv_intel_find_best_PLL(const struct cdv_intel_limit_t *limit,
struct drm_crtc *crtc, int target, int refclk,
struct cdv_intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
struct cdv_intel_clock_t clock;
int err = target;
if (cdv_intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
(REG_READ(LVDS) & LVDS_PORT_EN) != 0) {
/*
* For LVDS, if the panel is on, 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 ((REG_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
LVDS_CLKB_POWER_UP)
clock.p2 = limit->p2.p2_fast;
else
clock.p2 = limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
clock.p2 = limit->p2.p2_slow;
else
clock.p2 = limit->p2.p2_fast;
}
memset(best_clock, 0, sizeof(*best_clock));
clock.m1 = 0;
/* m1 is reserved as 0 in CDV, n is a ring counter.
So skip the m1 loop */
for (clock.n = limit->n.min; clock.n <= limit->n.max; clock.n++) {
for (clock.m2 = limit->m2.min; clock.m2 <= limit->m2.max;
clock.m2++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max;
clock.p1++) {
int this_err;
cdv_intel_clock(dev, refclk, &clock);
if (!cdv_intel_PLL_is_valid(crtc,
limit, &clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
return err != target;
}
static bool cdv_intel_find_dp_pll(const struct cdv_intel_limit_t *limit, struct drm_crtc *crtc, int target,
int refclk,
struct cdv_intel_clock_t *best_clock)
{
struct cdv_intel_clock_t clock;
if (refclk == 27000) {
if (target < 200000) {
clock.p1 = 2;
clock.p2 = 10;
clock.n = 1;
clock.m1 = 0;
clock.m2 = 118;
} else {
clock.p1 = 1;
clock.p2 = 10;
clock.n = 1;
clock.m1 = 0;
clock.m2 = 98;
}
} else if (refclk == 100000) {
if (target < 200000) {
clock.p1 = 2;
clock.p2 = 10;
clock.n = 5;
clock.m1 = 0;
clock.m2 = 160;
} else {
clock.p1 = 1;
clock.p2 = 10;
clock.n = 5;
clock.m1 = 0;
clock.m2 = 133;
}
} else
return false;
clock.m = clock.m2 + 2;
clock.p = clock.p1 * clock.p2;
clock.vco = (refclk * clock.m) / clock.n;
clock.dot = clock.vco / clock.p;
memcpy(best_clock, &clock, sizeof(struct cdv_intel_clock_t));
return true;
}
static int cdv_intel_pipe_set_base(struct drm_crtc *crtc,
int x, int y, struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
struct psb_framebuffer *psbfb = to_psb_fb(crtc->fb);
int pipe = psb_intel_crtc->pipe;
const struct psb_offset *map = &dev_priv->regmap[pipe];
unsigned long start, offset;
u32 dspcntr;
int ret = 0;
if (!gma_power_begin(dev, true))
return 0;
/* no fb bound */
if (!crtc->fb) {
dev_err(dev->dev, "No FB bound\n");
goto psb_intel_pipe_cleaner;
}
/* We are displaying this buffer, make sure it is actually loaded
into the GTT */
ret = psb_gtt_pin(psbfb->gtt);
if (ret < 0)
goto psb_intel_pipe_set_base_exit;
start = psbfb->gtt->offset;
offset = y * crtc->fb->pitches[0] + x * (crtc->fb->bits_per_pixel / 8);
REG_WRITE(map->stride, crtc->fb->pitches[0]);
dspcntr = REG_READ(map->cntr);
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
switch (crtc->fb->bits_per_pixel) {
case 8:
dspcntr |= DISPPLANE_8BPP;
break;
case 16:
if (crtc->fb->depth == 15)
dspcntr |= DISPPLANE_15_16BPP;
else
dspcntr |= DISPPLANE_16BPP;
break;
case 24:
case 32:
dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
break;
default:
dev_err(dev->dev, "Unknown color depth\n");
ret = -EINVAL;
goto psb_intel_pipe_set_base_exit;
}
REG_WRITE(map->cntr, dspcntr);
dev_dbg(dev->dev,
"Writing base %08lX %08lX %d %d\n", start, offset, x, y);
REG_WRITE(map->base, offset);
REG_READ(map->base);
REG_WRITE(map->surf, start);
REG_READ(map->surf);
psb_intel_pipe_cleaner:
/* If there was a previous display we can now unpin it */
if (old_fb)
psb_gtt_unpin(to_psb_fb(old_fb)->gtt);
psb_intel_pipe_set_base_exit:
gma_power_end(dev);
return ret;
}
#define FIFO_PIPEA (1 << 0)
#define FIFO_PIPEB (1 << 1)
static bool cdv_intel_pipe_enabled(struct drm_device *dev, int pipe)
{
struct drm_crtc *crtc;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = NULL;
crtc = dev_priv->pipe_to_crtc_mapping[pipe];
psb_intel_crtc = to_psb_intel_crtc(crtc);
if (crtc->fb == NULL || !psb_intel_crtc->active)
return false;
return true;
}
static bool cdv_intel_single_pipe_active (struct drm_device *dev)
{
uint32_t pipe_enabled = 0;
if (cdv_intel_pipe_enabled(dev, 0))
pipe_enabled |= FIFO_PIPEA;
if (cdv_intel_pipe_enabled(dev, 1))
pipe_enabled |= FIFO_PIPEB;
DRM_DEBUG_KMS("pipe enabled %x\n", pipe_enabled);
if (pipe_enabled == FIFO_PIPEA || pipe_enabled == FIFO_PIPEB)
return true;
else
return false;
}
static bool is_pipeb_lvds(struct drm_device *dev, struct drm_crtc *crtc)
{
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *connector;
if (psb_intel_crtc->pipe != 1)
return false;
list_for_each_entry(connector, &mode_config->connector_list, head) {
struct psb_intel_encoder *psb_intel_encoder =
psb_intel_attached_encoder(connector);
if (!connector->encoder
|| connector->encoder->crtc != crtc)
continue;
if (psb_intel_encoder->type == INTEL_OUTPUT_LVDS)
return true;
}
return false;
}
static void cdv_intel_disable_self_refresh (struct drm_device *dev)
{
if (REG_READ(FW_BLC_SELF) & FW_BLC_SELF_EN) {
/* Disable self-refresh before adjust WM */
REG_WRITE(FW_BLC_SELF, (REG_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN));
REG_READ(FW_BLC_SELF);
cdv_intel_wait_for_vblank(dev);
/* Cedarview workaround to write ovelay plane, which force to leave
* MAX_FIFO state.
*/
REG_WRITE(OV_OVADD, 0/*dev_priv->ovl_offset*/);
REG_READ(OV_OVADD);
cdv_intel_wait_for_vblank(dev);
}
}
static void cdv_intel_update_watermark (struct drm_device *dev, struct drm_crtc *crtc)
{
if (cdv_intel_single_pipe_active(dev)) {
u32 fw;
fw = REG_READ(DSPFW1);
fw &= ~DSP_FIFO_SR_WM_MASK;
fw |= (0x7e << DSP_FIFO_SR_WM_SHIFT);
fw &= ~CURSOR_B_FIFO_WM_MASK;
fw |= (0x4 << CURSOR_B_FIFO_WM_SHIFT);
REG_WRITE(DSPFW1, fw);
fw = REG_READ(DSPFW2);
fw &= ~CURSOR_A_FIFO_WM_MASK;
fw |= (0x6 << CURSOR_A_FIFO_WM_SHIFT);
fw &= ~DSP_PLANE_C_FIFO_WM_MASK;
fw |= (0x8 << DSP_PLANE_C_FIFO_WM_SHIFT);
REG_WRITE(DSPFW2, fw);
REG_WRITE(DSPFW3, 0x36000000);
/* ignore FW4 */
if (is_pipeb_lvds(dev, crtc)) {
REG_WRITE(DSPFW5, 0x00040330);
} else {
fw = (3 << DSP_PLANE_B_FIFO_WM1_SHIFT) |
(4 << DSP_PLANE_A_FIFO_WM1_SHIFT) |
(3 << CURSOR_B_FIFO_WM1_SHIFT) |
(4 << CURSOR_FIFO_SR_WM1_SHIFT);
REG_WRITE(DSPFW5, fw);
}
REG_WRITE(DSPFW6, 0x10);
cdv_intel_wait_for_vblank(dev);
/* enable self-refresh for single pipe active */
REG_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
REG_READ(FW_BLC_SELF);
cdv_intel_wait_for_vblank(dev);
} else {
/* HW team suggested values... */
REG_WRITE(DSPFW1, 0x3f880808);
REG_WRITE(DSPFW2, 0x0b020202);
REG_WRITE(DSPFW3, 0x24000000);
REG_WRITE(DSPFW4, 0x08030202);
REG_WRITE(DSPFW5, 0x01010101);
REG_WRITE(DSPFW6, 0x1d0);
cdv_intel_wait_for_vblank(dev);
cdv_intel_disable_self_refresh(dev);
}
}
/** Loads the palette/gamma unit for the CRTC with the prepared values */
static void cdv_intel_crtc_load_lut(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int palreg = PALETTE_A;
int i;
/* The clocks have to be on to load the palette. */
if (!crtc->enabled)
return;
switch (psb_intel_crtc->pipe) {
case 0:
break;
case 1:
palreg = PALETTE_B;
break;
case 2:
palreg = PALETTE_C;
break;
default:
dev_err(dev->dev, "Illegal Pipe Number.\n");
return;
}
if (gma_power_begin(dev, false)) {
for (i = 0; i < 256; i++) {
REG_WRITE(palreg + 4 * i,
((psb_intel_crtc->lut_r[i] +
psb_intel_crtc->lut_adj[i]) << 16) |
((psb_intel_crtc->lut_g[i] +
psb_intel_crtc->lut_adj[i]) << 8) |
(psb_intel_crtc->lut_b[i] +
psb_intel_crtc->lut_adj[i]));
}
gma_power_end(dev);
} else {
for (i = 0; i < 256; i++) {
dev_priv->regs.pipe[0].palette[i] =
((psb_intel_crtc->lut_r[i] +
psb_intel_crtc->lut_adj[i]) << 16) |
((psb_intel_crtc->lut_g[i] +
psb_intel_crtc->lut_adj[i]) << 8) |
(psb_intel_crtc->lut_b[i] +
psb_intel_crtc->lut_adj[i]);
}
}
}
/**
* Sets the power management mode of the pipe and plane.
*
* This code should probably grow support for turning the cursor off and back
* on appropriately at the same time as we're turning the pipe off/on.
*/
static void cdv_intel_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
const struct psb_offset *map = &dev_priv->regmap[pipe];
u32 temp;
/* XXX: When our outputs are all unaware of DPMS modes other than off
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
*/
cdv_intel_disable_self_refresh(dev);
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
if (psb_intel_crtc->active)
break;
psb_intel_crtc->active = true;
/* Enable the DPLL */
temp = REG_READ(map->dpll);
if ((temp & DPLL_VCO_ENABLE) == 0) {
REG_WRITE(map->dpll, temp);
REG_READ(map->dpll);
/* Wait for the clocks to stabilize. */
udelay(150);
REG_WRITE(map->dpll, temp | DPLL_VCO_ENABLE);
REG_READ(map->dpll);
/* Wait for the clocks to stabilize. */
udelay(150);
REG_WRITE(map->dpll, temp | DPLL_VCO_ENABLE);
REG_READ(map->dpll);
/* Wait for the clocks to stabilize. */
udelay(150);
}
/* Jim Bish - switch plan and pipe per scott */
/* Enable the plane */
temp = REG_READ(map->cntr);
if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
REG_WRITE(map->cntr,
temp | DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
REG_WRITE(map->base, REG_READ(map->base));
}
udelay(150);
/* Enable the pipe */
temp = REG_READ(map->conf);
if ((temp & PIPEACONF_ENABLE) == 0)
REG_WRITE(map->conf, temp | PIPEACONF_ENABLE);
temp = REG_READ(map->status);
temp &= ~(0xFFFF);
temp |= PIPE_FIFO_UNDERRUN;
REG_WRITE(map->status, temp);
REG_READ(map->status);
cdv_intel_crtc_load_lut(crtc);
/* Give the overlay scaler a chance to enable
* if it's on this pipe */
/* psb_intel_crtc_dpms_video(crtc, true); TODO */
break;
case DRM_MODE_DPMS_OFF:
if (!psb_intel_crtc->active)
break;
psb_intel_crtc->active = false;
/* Give the overlay scaler a chance to disable
* if it's on this pipe */
/* psb_intel_crtc_dpms_video(crtc, FALSE); TODO */
/* Disable the VGA plane that we never use */
REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
/* Jim Bish - changed pipe/plane here as well. */
drm_vblank_off(dev, pipe);
/* Wait for vblank for the disable to take effect */
cdv_intel_wait_for_vblank(dev);
/* Next, disable display pipes */
temp = REG_READ(map->conf);
if ((temp & PIPEACONF_ENABLE) != 0) {
REG_WRITE(map->conf, temp & ~PIPEACONF_ENABLE);
REG_READ(map->conf);
}
/* Wait for vblank for the disable to take effect. */
cdv_intel_wait_for_vblank(dev);
udelay(150);
/* Disable display plane */
temp = REG_READ(map->cntr);
if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
REG_WRITE(map->cntr,
temp & ~DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
REG_WRITE(map->base, REG_READ(map->base));
REG_READ(map->base);
}
temp = REG_READ(map->dpll);
if ((temp & DPLL_VCO_ENABLE) != 0) {
REG_WRITE(map->dpll, temp & ~DPLL_VCO_ENABLE);
REG_READ(map->dpll);
}
/* Wait for the clocks to turn off. */
udelay(150);
break;
}
cdv_intel_update_watermark(dev, crtc);
/*Set FIFO Watermarks*/
REG_WRITE(DSPARB, 0x3F3E);
}
static void cdv_intel_crtc_prepare(struct drm_crtc *crtc)
{
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
}
static void cdv_intel_crtc_commit(struct drm_crtc *crtc)
{
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
}
static bool cdv_intel_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
/**
* Return the pipe currently connected to the panel fitter,
* or -1 if the panel fitter is not present or not in use
*/
static int cdv_intel_panel_fitter_pipe(struct drm_device *dev)
{
u32 pfit_control;
pfit_control = REG_READ(PFIT_CONTROL);
/* See if the panel fitter is in use */
if ((pfit_control & PFIT_ENABLE) == 0)
return -1;
return (pfit_control >> 29) & 0x3;
}
static int cdv_intel_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
const struct psb_offset *map = &dev_priv->regmap[pipe];
int refclk;
struct cdv_intel_clock_t clock;
u32 dpll = 0, dspcntr, pipeconf;
bool ok;
bool is_crt = false, is_lvds = false, is_tv = false;
bool is_hdmi = false, is_dp = false;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *connector;
const struct cdv_intel_limit_t *limit;
u32 ddi_select = 0;
bool is_edp = false;
list_for_each_entry(connector, &mode_config->connector_list, head) {
struct psb_intel_encoder *psb_intel_encoder =
psb_intel_attached_encoder(connector);
if (!connector->encoder
|| connector->encoder->crtc != crtc)
continue;
ddi_select = psb_intel_encoder->ddi_select;
switch (psb_intel_encoder->type) {
case INTEL_OUTPUT_LVDS:
is_lvds = true;
break;
case INTEL_OUTPUT_TVOUT:
is_tv = true;
break;
case INTEL_OUTPUT_ANALOG:
is_crt = true;
break;
case INTEL_OUTPUT_HDMI:
is_hdmi = true;
break;
case INTEL_OUTPUT_DISPLAYPORT:
is_dp = true;
break;
case INTEL_OUTPUT_EDP:
is_edp = true;
break;
default:
DRM_ERROR("invalid output type.\n");
return 0;
}
}
if (dev_priv->dplla_96mhz)
/* low-end sku, 96/100 mhz */
refclk = 96000;
else
/* high-end sku, 27/100 mhz */
refclk = 27000;
if (is_dp || is_edp) {
/*
* Based on the spec the low-end SKU has only CRT/LVDS. So it is
* unnecessary to consider it for DP/eDP.
* On the high-end SKU, it will use the 27/100M reference clk
* for DP/eDP. When using SSC clock, the ref clk is 100MHz.Otherwise
* it will be 27MHz. From the VBIOS code it seems that the pipe A choose
* 27MHz for DP/eDP while the Pipe B chooses the 100MHz.
*/
if (pipe == 0)
refclk = 27000;
else
refclk = 100000;
}
if (is_lvds && dev_priv->lvds_use_ssc) {
refclk = dev_priv->lvds_ssc_freq * 1000;
DRM_DEBUG_KMS("Use SSC reference clock %d Mhz\n", dev_priv->lvds_ssc_freq);
}
drm_mode_debug_printmodeline(adjusted_mode);
limit = cdv_intel_limit(crtc, refclk);
ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk,
&clock);
if (!ok) {
dev_err(dev->dev, "Couldn't find PLL settings for mode!\n");
return 0;
}
dpll = DPLL_VGA_MODE_DIS;
if (is_tv) {
/* XXX: just matching BIOS for now */
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
dpll |= 3;
}
/* dpll |= PLL_REF_INPUT_DREFCLK; */
if (is_dp || is_edp) {
cdv_intel_dp_set_m_n(crtc, mode, adjusted_mode);
} else {
REG_WRITE(PIPE_GMCH_DATA_M(pipe), 0);
REG_WRITE(PIPE_GMCH_DATA_N(pipe), 0);
REG_WRITE(PIPE_DP_LINK_M(pipe), 0);
REG_WRITE(PIPE_DP_LINK_N(pipe), 0);
}
dpll |= DPLL_SYNCLOCK_ENABLE;
/* if (is_lvds)
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL; */
/* dpll |= (2 << 11); */
/* setup pipeconf */
pipeconf = REG_READ(map->conf);
pipeconf &= ~(PIPE_BPC_MASK);
if (is_edp) {
switch (dev_priv->edp.bpp) {
case 24:
pipeconf |= PIPE_8BPC;
break;
case 18:
pipeconf |= PIPE_6BPC;
break;
case 30:
pipeconf |= PIPE_10BPC;
break;
default:
pipeconf |= PIPE_8BPC;
break;
}
} else if (is_lvds) {
/* the BPC will be 6 if it is 18-bit LVDS panel */
if ((REG_READ(LVDS) & LVDS_A3_POWER_MASK) == LVDS_A3_POWER_UP)
pipeconf |= PIPE_8BPC;
else
pipeconf |= PIPE_6BPC;
} else
pipeconf |= PIPE_8BPC;
/* Set up the display plane register */
dspcntr = DISPPLANE_GAMMA_ENABLE;
if (pipe == 0)
dspcntr |= DISPPLANE_SEL_PIPE_A;
else
dspcntr |= DISPPLANE_SEL_PIPE_B;
dspcntr |= DISPLAY_PLANE_ENABLE;
pipeconf |= PIPEACONF_ENABLE;
REG_WRITE(map->dpll, dpll | DPLL_VGA_MODE_DIS | DPLL_SYNCLOCK_ENABLE);
REG_READ(map->dpll);
cdv_dpll_set_clock_cdv(dev, crtc, &clock, is_lvds, ddi_select);
udelay(150);
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
* This is an exception to the general rule that mode_set doesn't turn
* things on.
*/
if (is_lvds) {
u32 lvds = REG_READ(LVDS);
lvds |=
LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP |
LVDS_PIPEB_SELECT;
/* Set the B0-B3 data pairs corresponding to
* whether we're going to
* set the DPLLs for dual-channel mode or not.
*/
if (clock.p2 == 7)
lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
else
lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
/* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
* appropriately here, but we need to look more
* thoroughly into how panels behave in the two modes.
*/
REG_WRITE(LVDS, lvds);
REG_READ(LVDS);
}
dpll |= DPLL_VCO_ENABLE;
/* Disable the panel fitter if it was on our pipe */
if (cdv_intel_panel_fitter_pipe(dev) == pipe)
REG_WRITE(PFIT_CONTROL, 0);
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
drm_mode_debug_printmodeline(mode);
REG_WRITE(map->dpll,
(REG_READ(map->dpll) & ~DPLL_LOCK) | DPLL_VCO_ENABLE);
REG_READ(map->dpll);
/* Wait for the clocks to stabilize. */
udelay(150); /* 42 usec w/o calibration, 110 with. rounded up. */
if (!(REG_READ(map->dpll) & DPLL_LOCK)) {
dev_err(dev->dev, "Failed to get DPLL lock\n");
return -EBUSY;
}
{
int sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
REG_WRITE(map->dpll_md, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) | ((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT));
}
REG_WRITE(map->htotal, (adjusted_mode->crtc_hdisplay - 1) |
((adjusted_mode->crtc_htotal - 1) << 16));
REG_WRITE(map->hblank, (adjusted_mode->crtc_hblank_start - 1) |
((adjusted_mode->crtc_hblank_end - 1) << 16));
REG_WRITE(map->hsync, (adjusted_mode->crtc_hsync_start - 1) |
((adjusted_mode->crtc_hsync_end - 1) << 16));
REG_WRITE(map->vtotal, (adjusted_mode->crtc_vdisplay - 1) |
((adjusted_mode->crtc_vtotal - 1) << 16));
REG_WRITE(map->vblank, (adjusted_mode->crtc_vblank_start - 1) |
((adjusted_mode->crtc_vblank_end - 1) << 16));
REG_WRITE(map->vsync, (adjusted_mode->crtc_vsync_start - 1) |
((adjusted_mode->crtc_vsync_end - 1) << 16));
/* pipesrc and dspsize control the size that is scaled from,
* which should always be the user's requested size.
*/
REG_WRITE(map->size,
((mode->vdisplay - 1) << 16) | (mode->hdisplay - 1));
REG_WRITE(map->pos, 0);
REG_WRITE(map->src,
((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
REG_WRITE(map->conf, pipeconf);
REG_READ(map->conf);
cdv_intel_wait_for_vblank(dev);
REG_WRITE(map->cntr, dspcntr);
/* Flush the plane changes */
{
struct drm_crtc_helper_funcs *crtc_funcs =
crtc->helper_private;
crtc_funcs->mode_set_base(crtc, x, y, old_fb);
}
cdv_intel_wait_for_vblank(dev);
return 0;
}
/**
* Save HW states of giving crtc
*/
static void cdv_intel_crtc_save(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
struct psb_intel_crtc_state *crtc_state = psb_intel_crtc->crtc_state;
const struct psb_offset *map = &dev_priv->regmap[psb_intel_crtc->pipe];
uint32_t paletteReg;
int i;
if (!crtc_state) {
dev_dbg(dev->dev, "No CRTC state found\n");
return;
}
crtc_state->saveDSPCNTR = REG_READ(map->cntr);
crtc_state->savePIPECONF = REG_READ(map->conf);
crtc_state->savePIPESRC = REG_READ(map->src);
crtc_state->saveFP0 = REG_READ(map->fp0);
crtc_state->saveFP1 = REG_READ(map->fp1);
crtc_state->saveDPLL = REG_READ(map->dpll);
crtc_state->saveHTOTAL = REG_READ(map->htotal);
crtc_state->saveHBLANK = REG_READ(map->hblank);
crtc_state->saveHSYNC = REG_READ(map->hsync);
crtc_state->saveVTOTAL = REG_READ(map->vtotal);
crtc_state->saveVBLANK = REG_READ(map->vblank);
crtc_state->saveVSYNC = REG_READ(map->vsync);
crtc_state->saveDSPSTRIDE = REG_READ(map->stride);
/*NOTE: DSPSIZE DSPPOS only for psb*/
crtc_state->saveDSPSIZE = REG_READ(map->size);
crtc_state->saveDSPPOS = REG_READ(map->pos);
crtc_state->saveDSPBASE = REG_READ(map->base);
DRM_DEBUG("(%x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x)\n",
crtc_state->saveDSPCNTR,
crtc_state->savePIPECONF,
crtc_state->savePIPESRC,
crtc_state->saveFP0,
crtc_state->saveFP1,
crtc_state->saveDPLL,
crtc_state->saveHTOTAL,
crtc_state->saveHBLANK,
crtc_state->saveHSYNC,
crtc_state->saveVTOTAL,
crtc_state->saveVBLANK,
crtc_state->saveVSYNC,
crtc_state->saveDSPSTRIDE,
crtc_state->saveDSPSIZE,
crtc_state->saveDSPPOS,
crtc_state->saveDSPBASE
);
paletteReg = map->palette;
for (i = 0; i < 256; ++i)
crtc_state->savePalette[i] = REG_READ(paletteReg + (i << 2));
}
/**
* Restore HW states of giving crtc
*/
static void cdv_intel_crtc_restore(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
struct psb_intel_crtc_state *crtc_state = psb_intel_crtc->crtc_state;
const struct psb_offset *map = &dev_priv->regmap[psb_intel_crtc->pipe];
uint32_t paletteReg;
int i;
if (!crtc_state) {
dev_dbg(dev->dev, "No crtc state\n");
return;
}
DRM_DEBUG(
"current:(%x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x)\n",
REG_READ(map->cntr),
REG_READ(map->conf),
REG_READ(map->src),
REG_READ(map->fp0),
REG_READ(map->fp1),
REG_READ(map->dpll),
REG_READ(map->htotal),
REG_READ(map->hblank),
REG_READ(map->hsync),
REG_READ(map->vtotal),
REG_READ(map->vblank),
REG_READ(map->vsync),
REG_READ(map->stride),
REG_READ(map->size),
REG_READ(map->pos),
REG_READ(map->base)
);
DRM_DEBUG(
"saved: (%x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x)\n",
crtc_state->saveDSPCNTR,
crtc_state->savePIPECONF,
crtc_state->savePIPESRC,
crtc_state->saveFP0,
crtc_state->saveFP1,
crtc_state->saveDPLL,
crtc_state->saveHTOTAL,
crtc_state->saveHBLANK,
crtc_state->saveHSYNC,
crtc_state->saveVTOTAL,
crtc_state->saveVBLANK,
crtc_state->saveVSYNC,
crtc_state->saveDSPSTRIDE,
crtc_state->saveDSPSIZE,
crtc_state->saveDSPPOS,
crtc_state->saveDSPBASE
);
if (crtc_state->saveDPLL & DPLL_VCO_ENABLE) {
REG_WRITE(map->dpll,
crtc_state->saveDPLL & ~DPLL_VCO_ENABLE);
REG_READ(map->dpll);
DRM_DEBUG("write dpll: %x\n",
REG_READ(map->dpll));
udelay(150);
}
REG_WRITE(map->fp0, crtc_state->saveFP0);
REG_READ(map->fp0);
REG_WRITE(map->fp1, crtc_state->saveFP1);
REG_READ(map->fp1);
REG_WRITE(map->dpll, crtc_state->saveDPLL);
REG_READ(map->dpll);
udelay(150);
REG_WRITE(map->htotal, crtc_state->saveHTOTAL);
REG_WRITE(map->hblank, crtc_state->saveHBLANK);
REG_WRITE(map->hsync, crtc_state->saveHSYNC);
REG_WRITE(map->vtotal, crtc_state->saveVTOTAL);
REG_WRITE(map->vblank, crtc_state->saveVBLANK);
REG_WRITE(map->vsync, crtc_state->saveVSYNC);
REG_WRITE(map->stride, crtc_state->saveDSPSTRIDE);
REG_WRITE(map->size, crtc_state->saveDSPSIZE);
REG_WRITE(map->pos, crtc_state->saveDSPPOS);
REG_WRITE(map->src, crtc_state->savePIPESRC);
REG_WRITE(map->base, crtc_state->saveDSPBASE);
REG_WRITE(map->conf, crtc_state->savePIPECONF);
cdv_intel_wait_for_vblank(dev);
REG_WRITE(map->cntr, crtc_state->saveDSPCNTR);
REG_WRITE(map->base, crtc_state->saveDSPBASE);
cdv_intel_wait_for_vblank(dev);
paletteReg = map->palette;
for (i = 0; i < 256; ++i)
REG_WRITE(paletteReg + (i << 2), crtc_state->savePalette[i]);
}
static int cdv_intel_crtc_cursor_set(struct drm_crtc *crtc,
struct drm_file *file_priv,
uint32_t handle,
uint32_t width, uint32_t height)
{
struct drm_device *dev = crtc->dev;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
uint32_t temp;
size_t addr = 0;
struct gtt_range *gt;
struct drm_gem_object *obj;
int ret;
/* if we want to turn of the cursor ignore width and height */
if (!handle) {
/* turn off the cursor */
temp = CURSOR_MODE_DISABLE;
if (gma_power_begin(dev, false)) {
REG_WRITE(control, temp);
REG_WRITE(base, 0);
gma_power_end(dev);
}
/* unpin the old GEM object */
if (psb_intel_crtc->cursor_obj) {
gt = container_of(psb_intel_crtc->cursor_obj,
struct gtt_range, gem);
psb_gtt_unpin(gt);
drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
psb_intel_crtc->cursor_obj = NULL;
}
return 0;
}
/* Currently we only support 64x64 cursors */
if (width != 64 || height != 64) {
dev_dbg(dev->dev, "we currently only support 64x64 cursors\n");
return -EINVAL;
}
obj = drm_gem_object_lookup(dev, file_priv, handle);
if (!obj)
return -ENOENT;
if (obj->size < width * height * 4) {
dev_dbg(dev->dev, "buffer is to small\n");
return -ENOMEM;
}
gt = container_of(obj, struct gtt_range, gem);
/* Pin the memory into the GTT */
ret = psb_gtt_pin(gt);
if (ret) {
dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle);
return ret;
}
addr = gt->offset; /* Or resource.start ??? */
psb_intel_crtc->cursor_addr = addr;
temp = 0;
/* set the pipe for the cursor */
temp |= (pipe << 28);
temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
if (gma_power_begin(dev, false)) {
REG_WRITE(control, temp);
REG_WRITE(base, addr);
gma_power_end(dev);
}
/* unpin the old GEM object */
if (psb_intel_crtc->cursor_obj) {
gt = container_of(psb_intel_crtc->cursor_obj,
struct gtt_range, gem);
psb_gtt_unpin(gt);
drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
psb_intel_crtc->cursor_obj = obj;
}
return 0;
}
static int cdv_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
struct drm_device *dev = crtc->dev;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
uint32_t temp = 0;
uint32_t adder;
if (x < 0) {
temp |= (CURSOR_POS_SIGN << CURSOR_X_SHIFT);
x = -x;
}
if (y < 0) {
temp |= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT);
y = -y;
}
temp |= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT);
temp |= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);
adder = psb_intel_crtc->cursor_addr;
if (gma_power_begin(dev, false)) {
REG_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
REG_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder);
gma_power_end(dev);
}
return 0;
}
static void cdv_intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red,
u16 *green, u16 *blue, uint32_t start, uint32_t size)
{
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int i;
int end = (start + size > 256) ? 256 : start + size;
for (i = start; i < end; i++) {
psb_intel_crtc->lut_r[i] = red[i] >> 8;
psb_intel_crtc->lut_g[i] = green[i] >> 8;
psb_intel_crtc->lut_b[i] = blue[i] >> 8;
}
cdv_intel_crtc_load_lut(crtc);
}
static int cdv_crtc_set_config(struct drm_mode_set *set)
{
int ret = 0;
struct drm_device *dev = set->crtc->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
if (!dev_priv->rpm_enabled)
return drm_crtc_helper_set_config(set);
pm_runtime_forbid(&dev->pdev->dev);
ret = drm_crtc_helper_set_config(set);
pm_runtime_allow(&dev->pdev->dev);
return ret;
}
/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
/* FIXME: why are we using this, should it be cdv_ in this tree ? */
static void i8xx_clock(int refclk, struct cdv_intel_clock_t *clock)
{
clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
clock->p = clock->p1 * clock->p2;
clock->vco = refclk * clock->m / (clock->n + 2);
clock->dot = clock->vco / clock->p;
}
/* Returns the clock of the currently programmed mode of the given pipe. */
static int cdv_intel_crtc_clock_get(struct drm_device *dev,
struct drm_crtc *crtc)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
const struct psb_offset *map = &dev_priv->regmap[pipe];
u32 dpll;
u32 fp;
struct cdv_intel_clock_t clock;
bool is_lvds;
struct psb_pipe *p = &dev_priv->regs.pipe[pipe];
if (gma_power_begin(dev, false)) {
dpll = REG_READ(map->dpll);
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
fp = REG_READ(map->fp0);
else
fp = REG_READ(map->fp1);
is_lvds = (pipe == 1) && (REG_READ(LVDS) & LVDS_PORT_EN);
gma_power_end(dev);
} else {
dpll = p->dpll;
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
fp = p->fp0;
else
fp = p->fp1;
is_lvds = (pipe == 1) &&
(dev_priv->regs.psb.saveLVDS & LVDS_PORT_EN);
}
clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
if (is_lvds) {
clock.p1 =
ffs((dpll &
DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
DPLL_FPA01_P1_POST_DIV_SHIFT);
if (clock.p1 == 0) {
clock.p1 = 4;
dev_err(dev->dev, "PLL %d\n", dpll);
}
clock.p2 = 14;
if ((dpll & PLL_REF_INPUT_MASK) ==
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
/* XXX: might not be 66MHz */
i8xx_clock(66000, &clock);
} else
i8xx_clock(48000, &clock);
} else {
if (dpll & PLL_P1_DIVIDE_BY_TWO)
clock.p1 = 2;
else {
clock.p1 =
((dpll &
DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
}
if (dpll & PLL_P2_DIVIDE_BY_4)
clock.p2 = 4;
else
clock.p2 = 2;
i8xx_clock(48000, &clock);
}
/* XXX: It would be nice to validate the clocks, but we can't reuse
* i830PllIsValid() because it relies on the xf86_config connector
* configuration being accurate, which it isn't necessarily.
*/
return clock.dot;
}
/** Returns the currently programmed mode of the given pipe. */
struct drm_display_mode *cdv_intel_crtc_mode_get(struct drm_device *dev,
struct drm_crtc *crtc)
{
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
int pipe = psb_intel_crtc->pipe;
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_pipe *p = &dev_priv->regs.pipe[pipe];
const struct psb_offset *map = &dev_priv->regmap[pipe];
struct drm_display_mode *mode;
int htot;
int hsync;
int vtot;
int vsync;
if (gma_power_begin(dev, false)) {
htot = REG_READ(map->htotal);
hsync = REG_READ(map->hsync);
vtot = REG_READ(map->vtotal);
vsync = REG_READ(map->vsync);
gma_power_end(dev);
} else {
htot = p->htotal;
hsync = p->hsync;
vtot = p->vtotal;
vsync = p->vsync;
}
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
if (!mode)
return NULL;
mode->clock = cdv_intel_crtc_clock_get(dev, crtc);
mode->hdisplay = (htot & 0xffff) + 1;
mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
mode->hsync_start = (hsync & 0xffff) + 1;
mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
mode->vdisplay = (vtot & 0xffff) + 1;
mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
mode->vsync_start = (vsync & 0xffff) + 1;
mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
drm_mode_set_name(mode);
drm_mode_set_crtcinfo(mode, 0);
return mode;
}
static void cdv_intel_crtc_destroy(struct drm_crtc *crtc)
{
struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc);
kfree(psb_intel_crtc->crtc_state);
drm_crtc_cleanup(crtc);
kfree(psb_intel_crtc);
}
const struct drm_crtc_helper_funcs cdv_intel_helper_funcs = {
.dpms = cdv_intel_crtc_dpms,
.mode_fixup = cdv_intel_crtc_mode_fixup,
.mode_set = cdv_intel_crtc_mode_set,
.mode_set_base = cdv_intel_pipe_set_base,
.prepare = cdv_intel_crtc_prepare,
.commit = cdv_intel_crtc_commit,
};
const struct drm_crtc_funcs cdv_intel_crtc_funcs = {
.save = cdv_intel_crtc_save,
.restore = cdv_intel_crtc_restore,
.cursor_set = cdv_intel_crtc_cursor_set,
.cursor_move = cdv_intel_crtc_cursor_move,
.gamma_set = cdv_intel_crtc_gamma_set,
.set_config = cdv_crtc_set_config,
.destroy = cdv_intel_crtc_destroy,
};
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