| /* |
| * Copyright © 2006-2007 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Eric Anholt <eric@anholt.net> |
| */ |
| |
| #include <linux/i2c.h> |
| #include <drm/drmP.h> |
| |
| #include "intel_bios.h" |
| #include "psb_drv.h" |
| #include "psb_intel_drv.h" |
| #include "psb_intel_reg.h" |
| #include "power.h" |
| #include "cdv_device.h" |
| #include <linux/pm_runtime.h> |
| |
| |
| static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode) |
| { |
| struct drm_device *dev = encoder->dev; |
| u32 temp, reg; |
| reg = ADPA; |
| |
| temp = REG_READ(reg); |
| temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); |
| temp &= ~ADPA_DAC_ENABLE; |
| |
| switch (mode) { |
| case DRM_MODE_DPMS_ON: |
| temp |= ADPA_DAC_ENABLE; |
| break; |
| case DRM_MODE_DPMS_STANDBY: |
| temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE; |
| break; |
| case DRM_MODE_DPMS_SUSPEND: |
| temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE; |
| break; |
| case DRM_MODE_DPMS_OFF: |
| temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE; |
| break; |
| } |
| |
| REG_WRITE(reg, temp); |
| } |
| |
| static int cdv_intel_crt_mode_valid(struct drm_connector *connector, |
| struct drm_display_mode *mode) |
| { |
| if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
| return MODE_NO_DBLESCAN; |
| |
| /* The lowest clock for CDV is 20000KHz */ |
| if (mode->clock < 20000) |
| return MODE_CLOCK_LOW; |
| |
| /* The max clock for CDV is 355 instead of 400 */ |
| if (mode->clock > 355000) |
| return MODE_CLOCK_HIGH; |
| |
| return MODE_OK; |
| } |
| |
| static void cdv_intel_crt_mode_set(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| |
| struct drm_device *dev = encoder->dev; |
| struct drm_crtc *crtc = encoder->crtc; |
| struct gma_crtc *gma_crtc = to_gma_crtc(crtc); |
| int dpll_md_reg; |
| u32 adpa, dpll_md; |
| u32 adpa_reg; |
| |
| if (gma_crtc->pipe == 0) |
| dpll_md_reg = DPLL_A_MD; |
| else |
| dpll_md_reg = DPLL_B_MD; |
| |
| adpa_reg = ADPA; |
| |
| /* |
| * Disable separate mode multiplier used when cloning SDVO to CRT |
| * XXX this needs to be adjusted when we really are cloning |
| */ |
| { |
| dpll_md = REG_READ(dpll_md_reg); |
| REG_WRITE(dpll_md_reg, |
| dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK); |
| } |
| |
| adpa = 0; |
| if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
| adpa |= ADPA_HSYNC_ACTIVE_HIGH; |
| if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) |
| adpa |= ADPA_VSYNC_ACTIVE_HIGH; |
| |
| if (gma_crtc->pipe == 0) |
| adpa |= ADPA_PIPE_A_SELECT; |
| else |
| adpa |= ADPA_PIPE_B_SELECT; |
| |
| REG_WRITE(adpa_reg, adpa); |
| } |
| |
| |
| /** |
| * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence. |
| * |
| * \return true if CRT is connected. |
| * \return false if CRT is disconnected. |
| */ |
| static bool cdv_intel_crt_detect_hotplug(struct drm_connector *connector, |
| bool force) |
| { |
| struct drm_device *dev = connector->dev; |
| u32 hotplug_en; |
| int i, tries = 0, ret = false; |
| u32 orig; |
| |
| /* |
| * On a CDV thep, CRT detect sequence need to be done twice |
| * to get a reliable result. |
| */ |
| tries = 2; |
| |
| orig = hotplug_en = REG_READ(PORT_HOTPLUG_EN); |
| hotplug_en &= ~(CRT_HOTPLUG_DETECT_MASK); |
| hotplug_en |= CRT_HOTPLUG_FORCE_DETECT; |
| |
| hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; |
| hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
| |
| for (i = 0; i < tries ; i++) { |
| unsigned long timeout; |
| /* turn on the FORCE_DETECT */ |
| REG_WRITE(PORT_HOTPLUG_EN, hotplug_en); |
| timeout = jiffies + msecs_to_jiffies(1000); |
| /* wait for FORCE_DETECT to go off */ |
| do { |
| if (!(REG_READ(PORT_HOTPLUG_EN) & |
| CRT_HOTPLUG_FORCE_DETECT)) |
| break; |
| msleep(1); |
| } while (time_after(timeout, jiffies)); |
| } |
| |
| if ((REG_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) != |
| CRT_HOTPLUG_MONITOR_NONE) |
| ret = true; |
| |
| /* clear the interrupt we just generated, if any */ |
| REG_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS); |
| |
| /* and put the bits back */ |
| REG_WRITE(PORT_HOTPLUG_EN, orig); |
| return ret; |
| } |
| |
| static enum drm_connector_status cdv_intel_crt_detect( |
| struct drm_connector *connector, bool force) |
| { |
| if (cdv_intel_crt_detect_hotplug(connector, force)) |
| return connector_status_connected; |
| else |
| return connector_status_disconnected; |
| } |
| |
| static void cdv_intel_crt_destroy(struct drm_connector *connector) |
| { |
| struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
| |
| psb_intel_i2c_destroy(gma_encoder->ddc_bus); |
| drm_connector_unregister(connector); |
| drm_connector_cleanup(connector); |
| kfree(connector); |
| } |
| |
| static int cdv_intel_crt_get_modes(struct drm_connector *connector) |
| { |
| struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
| return psb_intel_ddc_get_modes(connector, |
| &gma_encoder->ddc_bus->adapter); |
| } |
| |
| static int cdv_intel_crt_set_property(struct drm_connector *connector, |
| struct drm_property *property, |
| uint64_t value) |
| { |
| return 0; |
| } |
| |
| /* |
| * Routines for controlling stuff on the analog port |
| */ |
| |
| static const struct drm_encoder_helper_funcs cdv_intel_crt_helper_funcs = { |
| .dpms = cdv_intel_crt_dpms, |
| .mode_fixup = gma_encoder_mode_fixup, |
| .prepare = gma_encoder_prepare, |
| .commit = gma_encoder_commit, |
| .mode_set = cdv_intel_crt_mode_set, |
| }; |
| |
| static const struct drm_connector_funcs cdv_intel_crt_connector_funcs = { |
| .dpms = drm_helper_connector_dpms, |
| .detect = cdv_intel_crt_detect, |
| .fill_modes = drm_helper_probe_single_connector_modes, |
| .destroy = cdv_intel_crt_destroy, |
| .set_property = cdv_intel_crt_set_property, |
| }; |
| |
| static const struct drm_connector_helper_funcs |
| cdv_intel_crt_connector_helper_funcs = { |
| .mode_valid = cdv_intel_crt_mode_valid, |
| .get_modes = cdv_intel_crt_get_modes, |
| .best_encoder = gma_best_encoder, |
| }; |
| |
| static void cdv_intel_crt_enc_destroy(struct drm_encoder *encoder) |
| { |
| drm_encoder_cleanup(encoder); |
| } |
| |
| static const struct drm_encoder_funcs cdv_intel_crt_enc_funcs = { |
| .destroy = cdv_intel_crt_enc_destroy, |
| }; |
| |
| void cdv_intel_crt_init(struct drm_device *dev, |
| struct psb_intel_mode_device *mode_dev) |
| { |
| |
| struct gma_connector *gma_connector; |
| struct gma_encoder *gma_encoder; |
| struct drm_connector *connector; |
| struct drm_encoder *encoder; |
| |
| u32 i2c_reg; |
| |
| gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); |
| if (!gma_encoder) |
| return; |
| |
| gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL); |
| if (!gma_connector) |
| goto failed_connector; |
| |
| connector = &gma_connector->base; |
| connector->polled = DRM_CONNECTOR_POLL_HPD; |
| drm_connector_init(dev, connector, |
| &cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); |
| |
| encoder = &gma_encoder->base; |
| drm_encoder_init(dev, encoder, |
| &cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC); |
| |
| gma_connector_attach_encoder(gma_connector, gma_encoder); |
| |
| /* Set up the DDC bus. */ |
| i2c_reg = GPIOA; |
| /* Remove the following code for CDV */ |
| /* |
| if (dev_priv->crt_ddc_bus != 0) |
| i2c_reg = dev_priv->crt_ddc_bus; |
| }*/ |
| gma_encoder->ddc_bus = psb_intel_i2c_create(dev, |
| i2c_reg, "CRTDDC_A"); |
| if (!gma_encoder->ddc_bus) { |
| dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " |
| "failed.\n"); |
| goto failed_ddc; |
| } |
| |
| gma_encoder->type = INTEL_OUTPUT_ANALOG; |
| /* |
| psb_intel_output->clone_mask = (1 << INTEL_ANALOG_CLONE_BIT); |
| psb_intel_output->crtc_mask = (1 << 0) | (1 << 1); |
| */ |
| connector->interlace_allowed = 0; |
| connector->doublescan_allowed = 0; |
| |
| drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs); |
| drm_connector_helper_add(connector, |
| &cdv_intel_crt_connector_helper_funcs); |
| |
| drm_connector_register(connector); |
| |
| return; |
| failed_ddc: |
| drm_encoder_cleanup(&gma_encoder->base); |
| drm_connector_cleanup(&gma_connector->base); |
| kfree(gma_connector); |
| failed_connector: |
| kfree(gma_encoder); |
| return; |
| } |