/*
* Copyright © 2006 - 2007 Intel Corporation
* Copyright ( c ) 2006 Dave Airlie < airlied @ linux . ie >
*
* 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 >
* Dave Airlie < airlied @ linux . ie >
* Jesse Barnes < jesse . barnes @ intel . com >
*/
#include <acpi/button.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/vga_switcheroo.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "intel_atomic.h"
#include "intel_backlight.h"
#include "intel_connector.h"
#include "intel_de.h"
#include "intel_display_types.h"
#include "intel_dpll.h"
#include "intel_fdi.h"
#include "intel_gmbus.h"
#include "intel_lvds.h"
#include "intel_lvds_regs.h"
#include "intel_panel.h"
#include "intel_pfit.h"
#include "intel_pfit_regs.h"
#include "intel_pps_regs.h"
/* Private structure for the integrated LVDS support */
struct intel_lvds_pps {
struct intel_pps_delays delays;
int divider;
int port;
bool powerdown_on_reset;
};
struct intel_lvds_encoder {
struct intel_encoder base;
bool is_dual_link;
i915_reg_t reg;
u32 a3_power;
struct intel_lvds_pps init_pps;
u32 init_lvds_val;
struct intel_connector *attached_connector;
};
static struct intel_lvds_encoder *to_lvds_encoder(struct intel_encoder *encoder)
{
return container_of(encoder, struct intel_lvds_encoder, base);
}
bool intel_lvds_port_enabled(struct intel_display *display,
i915_reg_t lvds_reg, enum pipe *pipe)
{
u32 val;
val = intel_de_read(display, lvds_reg);
/* asserts want to know the pipe even if the port is disabled */
if (HAS_PCH_CPT(display))
*pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK_CPT, val);
else
*pipe = REG_FIELD_GET(LVDS_PIPE_SEL_MASK, val);
return val & LVDS_PORT_EN;
}
static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
struct intel_display *display = to_intel_display(encoder);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
intel_wakeref_t wakeref;
bool ret;
wakeref = intel_display_power_get_if_enabled(display, encoder->power_domain);
if (!wakeref)
return false ;
ret = intel_lvds_port_enabled(display, lvds_encoder->reg, pipe);
intel_display_power_put(display, encoder->power_domain, wakeref);
return ret;
}
static void intel_lvds_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state)
{
struct intel_display *display = to_intel_display(encoder);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
u32 tmp, flags = 0 ;
crtc_state->output_types |= BIT(INTEL_OUTPUT_LVDS);
tmp = intel_de_read(display, lvds_encoder->reg);
if (tmp & LVDS_HSYNC_POLARITY)
flags |= DRM_MODE_FLAG_NHSYNC;
else
flags |= DRM_MODE_FLAG_PHSYNC;
if (tmp & LVDS_VSYNC_POLARITY)
flags |= DRM_MODE_FLAG_NVSYNC;
else
flags |= DRM_MODE_FLAG_PVSYNC;
crtc_state->hw.adjusted_mode.flags |= flags;
if (DISPLAY_VER(display) < 5 )
crtc_state->gmch_pfit.lvds_border_bits =
tmp & LVDS_BORDER_ENABLE;
/* gen2/3 store dither state in pfit control, needs to match */
if (DISPLAY_VER(display) < 4 ) {
tmp = intel_de_read(display, PFIT_CONTROL(display));
crtc_state->gmch_pfit.control |= tmp & PFIT_PANEL_8TO6_DITHER_ENABLE;
}
crtc_state->hw.adjusted_mode.crtc_clock = crtc_state->port_clock;
}
static void intel_lvds_pps_get_hw_state(struct intel_display *display,
struct intel_lvds_pps *pps)
{
u32 val;
pps->powerdown_on_reset = intel_de_read(display,
PP_CONTROL(display, 0 )) & PANEL_POWER_RESET;
val = intel_de_read(display, PP_ON_DELAYS(display, 0 ));
pps->port = REG_FIELD_GET(PANEL_PORT_SELECT_MASK, val);
pps->delays.power_up = REG_FIELD_GET(PANEL_POWER_UP_DELAY_MASK, val);
pps->delays.backlight_on = REG_FIELD_GET(PANEL_LIGHT_ON_DELAY_MASK, val);
val = intel_de_read(display, PP_OFF_DELAYS(display, 0 ));
pps->delays.power_down = REG_FIELD_GET(PANEL_POWER_DOWN_DELAY_MASK, val);
pps->delays.backlight_off = REG_FIELD_GET(PANEL_LIGHT_OFF_DELAY_MASK, val);
val = intel_de_read(display, PP_DIVISOR(display, 0 ));
pps->divider = REG_FIELD_GET(PP_REFERENCE_DIVIDER_MASK, val);
val = REG_FIELD_GET(PANEL_POWER_CYCLE_DELAY_MASK, val);
/*
* Remove the BSpec specified + 1 ( 100 ms ) offset that accounts for a
* too short power - cycle delay due to the asynchronous programming of
* the register .
*/
if (val)
val--;
/* Convert from 100ms to 100us units */
pps->delays.power_cycle = val * 1000 ;
if (DISPLAY_VER(display) < 5 &&
pps->delays.power_up == 0 &&
pps->delays.backlight_on == 0 &&
pps->delays.power_down == 0 &&
pps->delays.backlight_off == 0 ) {
drm_dbg_kms(display->drm,
"Panel power timings uninitialized, "
"setting defaults\n" );
/* Set T2 to 40ms and T5 to 200ms in 100 usec units */
pps->delays.power_up = 40 * 10 ;
pps->delays.backlight_on = 200 * 10 ;
/* Set T3 to 35ms and Tx to 200ms in 100 usec units */
pps->delays.power_down = 35 * 10 ;
pps->delays.backlight_off = 200 * 10 ;
}
drm_dbg(display->drm, "LVDS PPS:power_up %d power_down %d power_cycle %d backlight_on %d backlight_off %d "
"divider %d port %d powerdown_on_reset %d\n" ,
pps->delays.power_up, pps->delays.power_down,
pps->delays.power_cycle, pps->delays.backlight_on,
pps->delays.backlight_off, pps->divider,
pps->port, pps->powerdown_on_reset);
}
static void intel_lvds_pps_init_hw(struct intel_display *display,
struct intel_lvds_pps *pps)
{
u32 val;
val = intel_de_read(display, PP_CONTROL(display, 0 ));
drm_WARN_ON(display->drm,
(val & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS);
if (pps->powerdown_on_reset)
val |= PANEL_POWER_RESET;
intel_de_write(display, PP_CONTROL(display, 0 ), val);
intel_de_write(display, PP_ON_DELAYS(display, 0 ),
REG_FIELD_PREP(PANEL_PORT_SELECT_MASK, pps->port) |
REG_FIELD_PREP(PANEL_POWER_UP_DELAY_MASK, pps->delays.power_up) |
REG_FIELD_PREP(PANEL_LIGHT_ON_DELAY_MASK, pps->delays.backlight_on));
intel_de_write(display, PP_OFF_DELAYS(display, 0 ),
REG_FIELD_PREP(PANEL_POWER_DOWN_DELAY_MASK, pps->delays.power_down) |
REG_FIELD_PREP(PANEL_LIGHT_OFF_DELAY_MASK, pps->delays.backlight_off));
intel_de_write(display, PP_DIVISOR(display, 0 ),
REG_FIELD_PREP(PP_REFERENCE_DIVIDER_MASK, pps->divider) |
REG_FIELD_PREP(PANEL_POWER_CYCLE_DELAY_MASK,
DIV_ROUND_UP(pps->delays.power_cycle, 1000 ) + 1 ));
}
static void intel_pre_enable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_display *display = to_intel_display(state);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
enum pipe pipe = crtc->pipe;
u32 temp;
if (HAS_PCH_SPLIT(display)) {
assert_fdi_rx_pll_disabled(display, pipe);
assert_dpll_disabled(display, crtc_state->intel_dpll);
} else {
assert_pll_disabled(display, pipe);
}
intel_lvds_pps_init_hw(display, &lvds_encoder->init_pps);
temp = lvds_encoder->init_lvds_val;
temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
if (HAS_PCH_CPT(display)) {
temp &= ~LVDS_PIPE_SEL_MASK_CPT;
temp |= LVDS_PIPE_SEL_CPT(pipe);
} else {
temp &= ~LVDS_PIPE_SEL_MASK;
temp |= LVDS_PIPE_SEL(pipe);
}
/* set the corresponding LVDS_BORDER bit */
temp &= ~LVDS_BORDER_ENABLE;
temp |= crtc_state->gmch_pfit.lvds_border_bits;
/*
* Set the B0 - B3 data pairs corresponding to whether we ' re going to
* set the DPLLs for dual - channel mode or not .
*/
if (lvds_encoder->is_dual_link)
temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
else
temp &= ~(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 . For now , let ' s just maintain the
* value we got from the BIOS .
*/
temp &= ~LVDS_A3_POWER_MASK;
temp |= lvds_encoder->a3_power;
/*
* Set the dithering flag on LVDS as needed , note that there is no
* special lvds dither control bit on pch - split platforms , dithering is
* only controlled through the TRANSCONF reg .
*/
if (DISPLAY_VER(display) == 4 ) {
/*
* Bspec wording suggests that LVDS port dithering only exists
* for 18 bpp panels .
*/
if (crtc_state->dither && crtc_state->pipe_bpp == 18 )
temp |= LVDS_ENABLE_DITHER;
else
temp &= ~LVDS_ENABLE_DITHER;
}
temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
temp |= LVDS_HSYNC_POLARITY;
if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
temp |= LVDS_VSYNC_POLARITY;
intel_de_write(display, lvds_encoder->reg, temp);
}
/*
* Sets the power state for the panel .
*/
static void intel_enable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
struct intel_display *display = to_intel_display(encoder);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
intel_de_rmw(display, lvds_encoder->reg, 0 , LVDS_PORT_EN);
intel_de_rmw(display, PP_CONTROL(display, 0 ), 0 , PANEL_POWER_ON);
intel_de_posting_read(display, lvds_encoder->reg);
if (intel_de_wait_for_set(display, PP_STATUS(display, 0 ), PP_ON, 5000 ))
drm_err(display->drm,
"timed out waiting for panel to power on\n" );
intel_backlight_enable(crtc_state, conn_state);
}
static void intel_disable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct intel_display *display = to_intel_display(encoder);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
intel_de_rmw(display, PP_CONTROL(display, 0 ), PANEL_POWER_ON, 0 );
if (intel_de_wait_for_clear(display, PP_STATUS(display, 0 ), PP_ON, 1000 ))
drm_err(display->drm,
"timed out waiting for panel to power off\n" );
intel_de_rmw(display, lvds_encoder->reg, LVDS_PORT_EN, 0 );
intel_de_posting_read(display, lvds_encoder->reg);
}
static void gmch_disable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
intel_backlight_disable(old_conn_state);
intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state);
}
static void pch_disable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
intel_backlight_disable(old_conn_state);
}
static void pch_post_disable_lvds(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
intel_disable_lvds(state, encoder, old_crtc_state, old_conn_state);
}
static void intel_lvds_shutdown(struct intel_encoder *encoder)
{
struct intel_display *display = to_intel_display(encoder);
if (intel_de_wait_for_clear(display, PP_STATUS(display, 0 ), PP_CYCLE_DELAY_ACTIVE, 5000 ))
drm_err(display->drm,
"timed out waiting for panel power cycle delay\n" );
}
static enum drm_mode_status
intel_lvds_mode_valid(struct drm_connector *_connector,
const struct drm_display_mode *mode)
{
struct intel_display *display = to_intel_display(_connector->dev);
struct intel_connector *connector = to_intel_connector(_connector);
const struct drm_display_mode *fixed_mode =
intel_panel_fixed_mode(connector, mode);
int max_pixclk = display->cdclk.max_dotclk_freq;
enum drm_mode_status status;
status = intel_cpu_transcoder_mode_valid(display, mode);
if (status != MODE_OK)
return status;
status = intel_panel_mode_valid(connector, mode);
if (status != MODE_OK)
return status;
if (fixed_mode->clock > max_pixclk)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static int intel_lvds_compute_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_display *display = to_intel_display(encoder);
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(encoder);
struct intel_connector *connector = lvds_encoder->attached_connector;
struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
unsigned int lvds_bpp;
int ret;
/* Should never happen!! */
if (DISPLAY_VER(display) < 4 && crtc->pipe == 0 ) {
drm_err(display->drm, "Can't support LVDS on pipe A\n" );
return -EINVAL;
}
if (HAS_PCH_SPLIT(display)) {
crtc_state->has_pch_encoder = true ;
if (!intel_fdi_compute_pipe_bpp(crtc_state))
return -EINVAL;
}
if (lvds_encoder->a3_power == LVDS_A3_POWER_UP)
lvds_bpp = 8 *3 ;
else
lvds_bpp = 6 *3 ;
/* TODO: Check crtc_state->max_link_bpp_x16 instead of bw_constrained */
if (lvds_bpp != crtc_state->pipe_bpp && !crtc_state->bw_constrained) {
drm_dbg_kms(display->drm,
"forcing display bpp (was %d) to LVDS (%d)\n" ,
crtc_state->pipe_bpp, lvds_bpp);
crtc_state->pipe_bpp = lvds_bpp;
}
crtc_state->sink_format = INTEL_OUTPUT_FORMAT_RGB;
crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB;
/*
* We have timings from the BIOS for the panel , put them in
* to the adjusted mode . The CRTC will be set up for this mode ,
* with the panel scaling set up to source from the H / VDisplay
* of the original mode .
*/
ret = intel_panel_compute_config(connector, adjusted_mode);
if (ret)
return ret;
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
return -EINVAL;
ret = intel_pfit_compute_config(crtc_state, conn_state);
if (ret)
return ret;
/*
* XXX : It would be nice to support lower refresh rates on the
* panels to reduce power consumption , and perhaps match the
* user ' s requested refresh rate .
*/
return 0 ;
}
/*
* Return the list of DDC modes if available , or the BIOS fixed mode otherwise .
*/
static int intel_lvds_get_modes(struct drm_connector *_connector)
{
struct intel_connector *connector = to_intel_connector(_connector);
const struct drm_edid *fixed_edid = connector->panel.fixed_edid;
/* Use panel fixed edid if we have one */
if (!IS_ERR_OR_NULL(fixed_edid)) {
drm_edid_connector_update(&connector->base, fixed_edid);
return drm_edid_connector_add_modes(&connector->base);
}
return intel_panel_get_modes(connector);
}
static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = {
.get_modes = intel_lvds_get_modes,
.mode_valid = intel_lvds_mode_valid,
.atomic_check = intel_digital_connector_atomic_check,
};
static const struct drm_connector_funcs intel_lvds_connector_funcs = {
.detect = intel_panel_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.atomic_get_property = intel_digital_connector_atomic_get_property,
.atomic_set_property = intel_digital_connector_atomic_set_property,
.late_register = intel_connector_register,
.early_unregister = intel_connector_unregister,
.destroy = intel_connector_destroy,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = intel_digital_connector_duplicate_state,
};
static const struct drm_encoder_funcs intel_lvds_enc_funcs = {
.destroy = intel_encoder_destroy,
};
static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
{
DRM_INFO("Skipping LVDS initialization for %s\n" , id->ident);
return 1 ;
}
/* These systems claim to have LVDS, but really don't */
static const struct dmi_system_id intel_no_lvds[] = {
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Apple Mac Mini (Core series)" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple" ),
DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Apple Mac Mini (Core 2 series)" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple" ),
DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "MSI IM-945GSE-A" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MSI" ),
DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Dell Studio Hybrid" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Dell OptiPlex FX170" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "AOpen Mini PC" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AOpen" ),
DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "AOpen Mini PC MP915" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AOpen" ),
DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "AOpen i915GMm-HFS" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AOpen" ),
DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "AOpen i45GMx-I" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AOpen" ),
DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Aopen i945GTt-VFA" ,
.matches = {
DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Clientron U800" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Clientron" ),
DMI_MATCH(DMI_PRODUCT_NAME, "U800" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Clientron E830" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Clientron" ),
DMI_MATCH(DMI_PRODUCT_NAME, "E830" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Asus EeeBox PC EB1007" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC." ),
DMI_MATCH(DMI_PRODUCT_NAME, "EB1007" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Asus AT5NM10T-I" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC." ),
DMI_MATCH(DMI_BOARD_NAME, "AT5NM10T-I" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Hewlett-Packard HP t5740" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard" ),
DMI_MATCH(DMI_PRODUCT_NAME, " t5740" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Hewlett-Packard t5745" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard" ),
DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Hewlett-Packard st5747" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard" ),
DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "MSI Wind Box DC500" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD" ),
DMI_MATCH(DMI_BOARD_NAME, "MS-7469" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Gigabyte GA-D525TUD" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd." ),
DMI_MATCH(DMI_BOARD_NAME, "D525TUD" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Supermicro X7SPA-H" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Supermicro" ),
DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Fujitsu Esprimo Q900" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU" ),
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Q900" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Intel D410PT" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Intel" ),
DMI_MATCH(DMI_BOARD_NAME, "D410PT" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Intel D425KT" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Intel" ),
DMI_EXACT_MATCH(DMI_BOARD_NAME, "D425KT" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Intel D510MO" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Intel" ),
DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Intel D525MW" ,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Intel" ),
DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW" ),
},
},
{
.callback = intel_no_lvds_dmi_callback,
.ident = "Radiant P845" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Radiant Systems Inc" ),
DMI_MATCH(DMI_PRODUCT_NAME, "P845" ),
},
},
{ } /* terminating entry */
};
static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
{
DRM_INFO("Forcing lvds to dual link mode on %s\n" , id->ident);
return 1 ;
}
static const struct dmi_system_id intel_dual_link_lvds[] = {
{
.callback = intel_dual_link_lvds_callback,
.ident = "Apple MacBook Pro 15\" (2010 )",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6,2" ),
},
},
{
.callback = intel_dual_link_lvds_callback,
.ident = "Apple MacBook Pro 15\" (2011 )",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2" ),
},
},
{
.callback = intel_dual_link_lvds_callback,
.ident = "Apple MacBook Pro 15\" (2012 )",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,1" ),
},
},
{ } /* terminating entry */
};
struct intel_encoder *intel_get_lvds_encoder(struct intel_display *display)
{
struct intel_encoder *encoder;
for_each_intel_encoder(display->drm, encoder) {
if (encoder->type == INTEL_OUTPUT_LVDS)
return encoder;
}
return NULL;
}
bool intel_is_dual_link_lvds(struct intel_display *display)
{
struct intel_encoder *encoder = intel_get_lvds_encoder(display);
return encoder && to_lvds_encoder(encoder)->is_dual_link;
}
static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
{
struct intel_display *display = to_intel_display(&lvds_encoder->base);
struct intel_connector *connector = lvds_encoder->attached_connector;
const struct drm_display_mode *fixed_mode =
intel_panel_preferred_fixed_mode(connector);
unsigned int val;
/* use the module option value if specified */
if (display->params.lvds_channel_mode > 0 )
return display->params.lvds_channel_mode == 2 ;
/* single channel LVDS is limited to 112 MHz */
if (fixed_mode->clock > 112999 )
return true ;
if (dmi_check_system(intel_dual_link_lvds))
return true ;
/*
* BIOS should set the proper LVDS register value at boot , but
* in reality , it doesn ' t set the value when the lid is closed ;
* we need to check " the value to be set " in VBT when LVDS
* register is uninitialized .
*/
val = intel_de_read(display, lvds_encoder->reg);
if (HAS_PCH_CPT(display))
val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK_CPT);
else
val &= ~(LVDS_DETECTED | LVDS_PIPE_SEL_MASK);
if (val == 0 )
val = connector->panel.vbt.bios_lvds_val;
return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
}
static void intel_lvds_add_properties(struct drm_connector *connector)
{
intel_attach_scaling_mode_property(connector);
}
/**
* intel_lvds_init - setup LVDS connectors on this device
* @ display : display device
*
* Create the connector , register the LVDS DDC bus , and try to figure out what
* modes we can display on the LVDS panel ( if present ) .
*/
void intel_lvds_init(struct intel_display *display)
{
struct intel_lvds_encoder *lvds_encoder;
struct intel_connector *connector;
const struct drm_edid *drm_edid;
struct intel_encoder *encoder;
i915_reg_t lvds_reg;
u32 lvds;
u8 ddc_pin;
/* Skip init on machines we know falsely report LVDS */
if (dmi_check_system(intel_no_lvds)) {
drm_WARN(display->drm, !display->vbt.int_lvds_support,
"Useless DMI match. Internal LVDS support disabled by VBT\n" );
return ;
}
if (!display->vbt.int_lvds_support) {
drm_dbg_kms(display->drm,
"Internal LVDS support disabled by VBT\n" );
return ;
}
if (HAS_PCH_SPLIT(display))
lvds_reg = PCH_LVDS;
else
lvds_reg = LVDS;
lvds = intel_de_read(display, lvds_reg);
if (HAS_PCH_SPLIT(display)) {
if ((lvds & LVDS_DETECTED) == 0 )
return ;
}
ddc_pin = GMBUS_PIN_PANEL;
if (!intel_bios_is_lvds_present(display, &ddc_pin)) {
if ((lvds & LVDS_PORT_EN) == 0 ) {
drm_dbg_kms(display->drm,
"LVDS is not present in VBT\n" );
return ;
}
drm_dbg_kms(display->drm,
"LVDS is not present in VBT, but enabled anyway\n" );
}
lvds_encoder = kzalloc(sizeof (*lvds_encoder), GFP_KERNEL);
if (!lvds_encoder)
return ;
connector = intel_connector_alloc();
if (!connector) {
kfree(lvds_encoder);
return ;
}
lvds_encoder->attached_connector = connector;
encoder = &lvds_encoder->base;
drm_connector_init_with_ddc(display->drm, &connector->base,
&intel_lvds_connector_funcs,
DRM_MODE_CONNECTOR_LVDS,
intel_gmbus_get_adapter(display, ddc_pin));
drm_encoder_init(display->drm, &encoder->base, &intel_lvds_enc_funcs,
DRM_MODE_ENCODER_LVDS, "LVDS" );
encoder->enable = intel_enable_lvds;
encoder->pre_enable = intel_pre_enable_lvds;
encoder->compute_config = intel_lvds_compute_config;
if (HAS_PCH_SPLIT(display)) {
encoder->disable = pch_disable_lvds;
encoder->post_disable = pch_post_disable_lvds;
} else {
encoder->disable = gmch_disable_lvds;
}
encoder->get_hw_state = intel_lvds_get_hw_state;
encoder->get_config = intel_lvds_get_config;
encoder->update_pipe = intel_backlight_update;
encoder->shutdown = intel_lvds_shutdown;
connector->get_hw_state = intel_connector_get_hw_state;
intel_connector_attach_encoder(connector, encoder);
encoder->type = INTEL_OUTPUT_LVDS;
encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
encoder->port = PORT_NONE;
encoder->cloneable = 0 ;
if (DISPLAY_VER(display) < 4 )
encoder->pipe_mask = BIT(PIPE_B);
else
encoder->pipe_mask = ~0 ;
drm_connector_helper_add(&connector->base, &intel_lvds_connector_helper_funcs);
connector->base.display_info.subpixel_order = SubPixelHorizontalRGB;
lvds_encoder->reg = lvds_reg;
intel_lvds_add_properties(&connector->base);
intel_lvds_pps_get_hw_state(display, &lvds_encoder->init_pps);
lvds_encoder->init_lvds_val = lvds;
/*
* LVDS discovery :
* 1 ) check for EDID on DDC
* 2 ) check for VBT data
* 3 ) check to see if LVDS is already on
* if none of the above , no panel
*/
/*
* Attempt to get the fixed panel mode from DDC . Assume that the
* preferred mode is the right one .
*/
mutex_lock(&display->drm->mode_config.mutex);
if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC)
drm_edid = drm_edid_read_switcheroo(&connector->base, connector->base.ddc);
else
drm_edid = drm_edid_read_ddc(&connector->base, connector->base.ddc);
if (drm_edid) {
if (drm_edid_connector_update(&connector->base, drm_edid) ||
!drm_edid_connector_add_modes(&connector->base)) {
drm_edid_connector_update(&connector->base, NULL);
drm_edid_free(drm_edid);
drm_edid = ERR_PTR(-EINVAL);
}
} else {
drm_edid = ERR_PTR(-ENOENT);
}
intel_bios_init_panel_late(display, &connector->panel, NULL,
IS_ERR(drm_edid) ? NULL : drm_edid);
/* Try EDID first */
intel_panel_add_edid_fixed_modes(connector, true );
/* Failed to get EDID, what about VBT? */
if (!intel_panel_preferred_fixed_mode(connector))
intel_panel_add_vbt_lfp_fixed_mode(connector);
/*
* If we didn ' t get a fixed mode from EDID or VBT , try checking
* if the panel is already turned on . If so , assume that
* whatever is currently programmed is the correct mode .
*/
if (!intel_panel_preferred_fixed_mode(connector))
intel_panel_add_encoder_fixed_mode(connector, encoder);
mutex_unlock(&display->drm->mode_config.mutex);
/* If we still don't have a mode after all that, give up. */
if (!intel_panel_preferred_fixed_mode(connector))
goto failed;
intel_panel_init(connector, drm_edid);
intel_backlight_setup(connector, INVALID_PIPE);
lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder);
drm_dbg_kms(display->drm, "detected %s-link lvds configuration\n" ,
lvds_encoder->is_dual_link ? "dual" : "single" );
lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK;
return ;
failed:
drm_dbg_kms(display->drm, "No LVDS modes found, disabling.\n" );
drm_connector_cleanup(&connector->base);
drm_encoder_cleanup(&encoder->base);
kfree(lvds_encoder);
intel_connector_free(connector);
return ;
}
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-10-03)
¤
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