diff options
Diffstat (limited to 'drivers/gpu/drm/gma500/cdv_intel_crt.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/cdv_intel_crt.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/cdv_intel_crt.c b/drivers/gpu/drm/gma500/cdv_intel_crt.c new file mode 100644 index 000000000000..6d0f10b7569c --- /dev/null +++ b/drivers/gpu/drm/gma500/cdv_intel_crt.c @@ -0,0 +1,333 @@ +/* + * 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 <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) +{ + int max_clock = 0; + 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 */ + max_clock = 355000; + if (mode->clock > max_clock) + return MODE_CLOCK_HIGH; + + if (mode->hdisplay > 1680 || mode->vdisplay > 1050) + return MODE_PANEL; + + return MODE_OK; +} + +static bool cdv_intel_crt_mode_fixup(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +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 psb_intel_crtc *psb_intel_crtc = + to_psb_intel_crtc(crtc); + int dpll_md_reg; + u32 adpa, dpll_md; + u32 adpa_reg; + + if (psb_intel_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 (psb_intel_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 adpa_orig; + + /* disable the DAC when doing the hotplug detection */ + + adpa_orig = REG_READ(ADPA); + + REG_WRITE(ADPA, adpa_orig & ~(ADPA_DAC_ENABLE)); + + /* + * On a CDV thep, CRT detect sequence need to be done twice + * to get a reliable result. + */ + tries = 2; + + 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; + + /* Restore the saved ADPA */ + REG_WRITE(ADPA, adpa_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 psb_intel_encoder *psb_intel_encoder = + psb_intel_attached_encoder(connector); + + psb_intel_i2c_destroy(psb_intel_encoder->ddc_bus); + drm_sysfs_connector_remove(connector); + drm_connector_cleanup(connector); + kfree(connector); +} + +static int cdv_intel_crt_get_modes(struct drm_connector *connector) +{ + struct psb_intel_encoder *psb_intel_encoder = + psb_intel_attached_encoder(connector); + return psb_intel_ddc_get_modes(connector, &psb_intel_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 = cdv_intel_crt_mode_fixup, + .prepare = psb_intel_encoder_prepare, + .commit = psb_intel_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 = psb_intel_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 psb_intel_connector *psb_intel_connector; + struct psb_intel_encoder *psb_intel_encoder; + struct drm_connector *connector; + struct drm_encoder *encoder; + + u32 i2c_reg; + + psb_intel_encoder = kzalloc(sizeof(struct psb_intel_encoder), GFP_KERNEL); + if (!psb_intel_encoder) + return; + + psb_intel_connector = kzalloc(sizeof(struct psb_intel_connector), GFP_KERNEL); + if (!psb_intel_connector) + goto failed_connector; + + connector = &psb_intel_connector->base; + drm_connector_init(dev, connector, + &cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); + + encoder = &psb_intel_encoder->base; + drm_encoder_init(dev, encoder, + &cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC); + + psb_intel_connector_attach_encoder(psb_intel_connector, + psb_intel_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; + }*/ + psb_intel_encoder->ddc_bus = psb_intel_i2c_create(dev, + i2c_reg, "CRTDDC_A"); + if (!psb_intel_encoder->ddc_bus) { + dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " + "failed.\n"); + goto failed_ddc; + } + + psb_intel_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_sysfs_connector_add(connector); + + return; +failed_ddc: + drm_encoder_cleanup(&psb_intel_encoder->base); + drm_connector_cleanup(&psb_intel_connector->base); + kfree(psb_intel_connector); +failed_connector: + kfree(psb_intel_encoder); + return; +} |