![Alan Cox](/assets/img/avatar_default.png)
[This fixes a crash on boot if the system is plugged into an HDTV so it's probably appropriate to push even though it didn't make the window. We could be cleverer about this but the simple version seems to be the safe one] From: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> At the moment we cannot allocate more than stolen memory size for framebuffers. To get around that issues we discard modes that doesn't fit. This is a temporary solution until we can freely allocate framebuffer memory. [Currently the framebuffer needs to be linear in kernel space due to limits in the kernel fb layer - AC] Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
340 lines
9 KiB
C
340 lines
9 KiB
C
/*
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* Copyright © 2006-2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*/
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#include <linux/i2c.h>
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#include <drm/drmP.h>
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#include "intel_bios.h"
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#include "psb_drv.h"
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#include "psb_intel_drv.h"
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#include "psb_intel_reg.h"
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#include "power.h"
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#include <linux/pm_runtime.h>
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static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode)
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{
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struct drm_device *dev = encoder->dev;
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u32 temp, reg;
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reg = ADPA;
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temp = REG_READ(reg);
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temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
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temp &= ~ADPA_DAC_ENABLE;
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switch (mode) {
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case DRM_MODE_DPMS_ON:
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temp |= ADPA_DAC_ENABLE;
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break;
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case DRM_MODE_DPMS_STANDBY:
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temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
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break;
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case DRM_MODE_DPMS_SUSPEND:
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temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
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break;
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case DRM_MODE_DPMS_OFF:
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temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
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break;
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}
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REG_WRITE(reg, temp);
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}
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static int cdv_intel_crt_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct drm_psb_private *dev_priv = connector->dev->dev_private;
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int max_clock = 0;
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if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
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return MODE_NO_DBLESCAN;
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/* The lowest clock for CDV is 20000KHz */
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if (mode->clock < 20000)
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return MODE_CLOCK_LOW;
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/* The max clock for CDV is 355 instead of 400 */
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max_clock = 355000;
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if (mode->clock > max_clock)
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return MODE_CLOCK_HIGH;
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if (mode->hdisplay > 1680 || mode->vdisplay > 1050)
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return MODE_PANEL;
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/* We assume worst case scenario of 32 bpp here, since we don't know */
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if ((ALIGN(mode->hdisplay * 4, 64) * mode->vdisplay) >
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dev_priv->vram_stolen_size)
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return MODE_MEM;
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return MODE_OK;
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}
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static bool cdv_intel_crt_mode_fixup(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static void cdv_intel_crt_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_crtc *crtc = encoder->crtc;
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struct psb_intel_crtc *psb_intel_crtc =
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to_psb_intel_crtc(crtc);
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int dpll_md_reg;
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u32 adpa, dpll_md;
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u32 adpa_reg;
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if (psb_intel_crtc->pipe == 0)
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dpll_md_reg = DPLL_A_MD;
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else
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dpll_md_reg = DPLL_B_MD;
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adpa_reg = ADPA;
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/*
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* Disable separate mode multiplier used when cloning SDVO to CRT
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* XXX this needs to be adjusted when we really are cloning
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*/
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{
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dpll_md = REG_READ(dpll_md_reg);
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REG_WRITE(dpll_md_reg,
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dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
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}
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adpa = 0;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
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adpa |= ADPA_HSYNC_ACTIVE_HIGH;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
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adpa |= ADPA_VSYNC_ACTIVE_HIGH;
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if (psb_intel_crtc->pipe == 0)
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adpa |= ADPA_PIPE_A_SELECT;
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else
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adpa |= ADPA_PIPE_B_SELECT;
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REG_WRITE(adpa_reg, adpa);
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}
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/**
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* Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
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*
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* \return true if CRT is connected.
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* \return false if CRT is disconnected.
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*/
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static bool cdv_intel_crt_detect_hotplug(struct drm_connector *connector,
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bool force)
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{
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struct drm_device *dev = connector->dev;
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u32 hotplug_en;
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int i, tries = 0, ret = false;
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u32 adpa_orig;
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/* disable the DAC when doing the hotplug detection */
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adpa_orig = REG_READ(ADPA);
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REG_WRITE(ADPA, adpa_orig & ~(ADPA_DAC_ENABLE));
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/*
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* On a CDV thep, CRT detect sequence need to be done twice
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* to get a reliable result.
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*/
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tries = 2;
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hotplug_en = REG_READ(PORT_HOTPLUG_EN);
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hotplug_en &= ~(CRT_HOTPLUG_DETECT_MASK);
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hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
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hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
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hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
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for (i = 0; i < tries ; i++) {
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unsigned long timeout;
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/* turn on the FORCE_DETECT */
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REG_WRITE(PORT_HOTPLUG_EN, hotplug_en);
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timeout = jiffies + msecs_to_jiffies(1000);
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/* wait for FORCE_DETECT to go off */
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do {
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if (!(REG_READ(PORT_HOTPLUG_EN) &
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CRT_HOTPLUG_FORCE_DETECT))
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break;
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msleep(1);
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} while (time_after(timeout, jiffies));
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}
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if ((REG_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) !=
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CRT_HOTPLUG_MONITOR_NONE)
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ret = true;
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/* Restore the saved ADPA */
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REG_WRITE(ADPA, adpa_orig);
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return ret;
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}
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static enum drm_connector_status cdv_intel_crt_detect(
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struct drm_connector *connector, bool force)
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{
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if (cdv_intel_crt_detect_hotplug(connector, force))
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return connector_status_connected;
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else
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return connector_status_disconnected;
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}
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static void cdv_intel_crt_destroy(struct drm_connector *connector)
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{
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struct psb_intel_encoder *psb_intel_encoder =
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psb_intel_attached_encoder(connector);
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psb_intel_i2c_destroy(psb_intel_encoder->ddc_bus);
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drm_sysfs_connector_remove(connector);
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drm_connector_cleanup(connector);
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kfree(connector);
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}
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static int cdv_intel_crt_get_modes(struct drm_connector *connector)
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{
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struct psb_intel_encoder *psb_intel_encoder =
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psb_intel_attached_encoder(connector);
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return psb_intel_ddc_get_modes(connector, &psb_intel_encoder->ddc_bus->adapter);
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}
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static int cdv_intel_crt_set_property(struct drm_connector *connector,
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struct drm_property *property,
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uint64_t value)
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{
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return 0;
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}
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/*
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* Routines for controlling stuff on the analog port
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*/
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static const struct drm_encoder_helper_funcs cdv_intel_crt_helper_funcs = {
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.dpms = cdv_intel_crt_dpms,
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.mode_fixup = cdv_intel_crt_mode_fixup,
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.prepare = psb_intel_encoder_prepare,
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.commit = psb_intel_encoder_commit,
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.mode_set = cdv_intel_crt_mode_set,
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};
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static const struct drm_connector_funcs cdv_intel_crt_connector_funcs = {
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.dpms = drm_helper_connector_dpms,
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.detect = cdv_intel_crt_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = cdv_intel_crt_destroy,
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.set_property = cdv_intel_crt_set_property,
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};
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static const struct drm_connector_helper_funcs
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cdv_intel_crt_connector_helper_funcs = {
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.mode_valid = cdv_intel_crt_mode_valid,
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.get_modes = cdv_intel_crt_get_modes,
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.best_encoder = psb_intel_best_encoder,
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};
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static void cdv_intel_crt_enc_destroy(struct drm_encoder *encoder)
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{
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drm_encoder_cleanup(encoder);
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}
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static const struct drm_encoder_funcs cdv_intel_crt_enc_funcs = {
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.destroy = cdv_intel_crt_enc_destroy,
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};
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void cdv_intel_crt_init(struct drm_device *dev,
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struct psb_intel_mode_device *mode_dev)
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{
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struct psb_intel_connector *psb_intel_connector;
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struct psb_intel_encoder *psb_intel_encoder;
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struct drm_connector *connector;
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struct drm_encoder *encoder;
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u32 i2c_reg;
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psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), GFP_KERNEL);
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if (!psb_intel_encoder)
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return;
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psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), GFP_KERNEL);
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if (!psb_intel_connector)
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goto failed_connector;
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connector = &psb_intel_connector->base;
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drm_connector_init(dev, connector,
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&cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
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encoder = &psb_intel_encoder->base;
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drm_encoder_init(dev, encoder,
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&cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC);
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psb_intel_connector_attach_encoder(psb_intel_connector,
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psb_intel_encoder);
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/* Set up the DDC bus. */
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i2c_reg = GPIOA;
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/* Remove the following code for CDV */
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/*
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if (dev_priv->crt_ddc_bus != 0)
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i2c_reg = dev_priv->crt_ddc_bus;
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}*/
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psb_intel_encoder->ddc_bus = psb_intel_i2c_create(dev,
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i2c_reg, "CRTDDC_A");
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if (!psb_intel_encoder->ddc_bus) {
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dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
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"failed.\n");
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goto failed_ddc;
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}
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psb_intel_encoder->type = INTEL_OUTPUT_ANALOG;
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/*
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psb_intel_output->clone_mask = (1 << INTEL_ANALOG_CLONE_BIT);
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psb_intel_output->crtc_mask = (1 << 0) | (1 << 1);
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*/
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connector->interlace_allowed = 0;
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connector->doublescan_allowed = 0;
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drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs);
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drm_connector_helper_add(connector,
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&cdv_intel_crt_connector_helper_funcs);
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drm_sysfs_connector_add(connector);
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return;
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failed_ddc:
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drm_encoder_cleanup(&psb_intel_encoder->base);
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drm_connector_cleanup(&psb_intel_connector->base);
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kfree(psb_intel_connector);
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failed_connector:
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kfree(psb_intel_encoder);
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return;
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}
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