diff options
author | Alan Cox <alan@linux.intel.com> | 2011-11-03 18:22:37 (GMT) |
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committer | Dave Airlie <airlied@redhat.com> | 2011-11-16 11:27:35 (GMT) |
commit | 6a227d5fd6c4abe6a9226a40f6981825e9da5fbe (patch) | |
tree | c9bf4f59f45c84f668d15de32ac7d6420e700578 /drivers/gpu/drm/gma500/cdv_intel_hdmi.c | |
parent | 1b082ccf5901108d3acd860a73d8c0442556c0bb (diff) | |
download | linux-6a227d5fd6c4abe6a9226a40f6981825e9da5fbe.tar.xz |
gma500: Add support for Cedarview
Again this is similar but has some differences so we have a set of plug in
support. This does make the driver bigger than is needed in some respects
but the tradeoff for maintainability is huge.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/gma500/cdv_intel_hdmi.c')
-rw-r--r-- | drivers/gpu/drm/gma500/cdv_intel_hdmi.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/cdv_intel_hdmi.c b/drivers/gpu/drm/gma500/cdv_intel_hdmi.c new file mode 100644 index 0000000..cbca2b0 --- /dev/null +++ b/drivers/gpu/drm/gma500/cdv_intel_hdmi.c @@ -0,0 +1,376 @@ +/* + * Copyright © 2006-2011 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: + * jim liu <jim.liu@intel.com> + * + * FIXME: + * We should probably make this generic and share it with Medfield + */ + +#include <drm/drmP.h> +#include <drm/drm.h> +#include <drm/drm_crtc.h> +#include <drm/drm_edid.h> +#include "psb_intel_drv.h" +#include "psb_drv.h" +#include "psb_intel_reg.h" +#include <linux/pm_runtime.h> + +/* hdmi control bits */ +#define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) +#define HDMI_BORDER_ENABLE (1 << 7) +#define HDMI_AUDIO_ENABLE (1 << 6) +#define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) +#define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) +/* hdmi-b control bits */ +#define HDMIB_PIPE_B_SELECT (1 << 30) + + +struct mid_intel_hdmi_priv { + u32 hdmi_reg; + u32 save_HDMIB; + bool has_hdmi_sink; + bool has_hdmi_audio; + /* Should set this when detect hotplug */ + bool hdmi_device_connected; + struct mdfld_hdmi_i2c *i2c_bus; + struct i2c_adapter *hdmi_i2c_adapter; /* for control functions */ + struct drm_device *dev; +}; + +static void cdv_hdmi_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct drm_device *dev = encoder->dev; + struct psb_intel_output *output = enc_to_psb_intel_output(encoder); + struct mid_intel_hdmi_priv *hdmi_priv = output->dev_priv; + u32 hdmib; + struct drm_crtc *crtc = encoder->crtc; + struct psb_intel_crtc *intel_crtc = to_psb_intel_crtc(crtc); + + hdmib = (2 << 10); + + if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) + hdmib |= HDMI_VSYNC_ACTIVE_HIGH; + if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) + hdmib |= HDMI_HSYNC_ACTIVE_HIGH; + + if (intel_crtc->pipe == 1) + hdmib |= HDMIB_PIPE_B_SELECT; + + if (hdmi_priv->has_hdmi_audio) { + hdmib |= HDMI_AUDIO_ENABLE; + hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; + } + + REG_WRITE(hdmi_priv->hdmi_reg, hdmib); + REG_READ(hdmi_priv->hdmi_reg); +} + +static bool cdv_hdmi_mode_fixup(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) +{ + struct drm_device *dev = encoder->dev; + struct psb_intel_output *output = enc_to_psb_intel_output(encoder); + struct mid_intel_hdmi_priv *hdmi_priv = output->dev_priv; + u32 hdmib; + + hdmib = REG_READ(hdmi_priv->hdmi_reg); + + if (mode != DRM_MODE_DPMS_ON) + REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); + else + REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); + REG_READ(hdmi_priv->hdmi_reg); +} + +static void cdv_hdmi_save(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct psb_intel_output *output = to_psb_intel_output(connector); + struct mid_intel_hdmi_priv *hdmi_priv = output->dev_priv; + + hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); +} + +static void cdv_hdmi_restore(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct psb_intel_output *output = to_psb_intel_output(connector); + struct mid_intel_hdmi_priv *hdmi_priv = output->dev_priv; + + REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); + REG_READ(hdmi_priv->hdmi_reg); +} + +static enum drm_connector_status cdv_hdmi_detect( + struct drm_connector *connector, bool force) +{ + struct psb_intel_output *psb_intel_output = + to_psb_intel_output(connector); + struct mid_intel_hdmi_priv *hdmi_priv = psb_intel_output->dev_priv; + struct edid *edid = NULL; + enum drm_connector_status status = connector_status_disconnected; + + edid = drm_get_edid(&psb_intel_output->base, + psb_intel_output->hdmi_i2c_adapter); + + hdmi_priv->has_hdmi_sink = false; + hdmi_priv->has_hdmi_audio = false; + if (edid) { + if (edid->input & DRM_EDID_INPUT_DIGITAL) { + status = connector_status_connected; + hdmi_priv->has_hdmi_sink = + drm_detect_hdmi_monitor(edid); + hdmi_priv->has_hdmi_audio = + drm_detect_monitor_audio(edid); + } + + psb_intel_output->base.display_info.raw_edid = NULL; + kfree(edid); + } + return status; +} + +static int cdv_hdmi_set_property(struct drm_connector *connector, + struct drm_property *property, + uint64_t value) +{ + struct drm_encoder *encoder = connector->encoder; + + if (!strcmp(property->name, "scaling mode") && encoder) { + struct psb_intel_crtc *crtc = to_psb_intel_crtc(encoder->crtc); + bool centre; + uint64_t curValue; + + if (!crtc) + return -1; + + switch (value) { + case DRM_MODE_SCALE_FULLSCREEN: + break; + case DRM_MODE_SCALE_NO_SCALE: + break; + case DRM_MODE_SCALE_ASPECT: + break; + default: + return -1; + } + + if (drm_connector_property_get_value(connector, + property, &curValue)) + return -1; + + if (curValue == value) + return 0; + + if (drm_connector_property_set_value(connector, + property, value)) + return -1; + + centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || + (value == DRM_MODE_SCALE_NO_SCALE); + + if (crtc->saved_mode.hdisplay != 0 && + crtc->saved_mode.vdisplay != 0) { + if (centre) { + if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, + encoder->crtc->x, encoder->crtc->y, encoder->crtc->fb)) + return -1; + } else { + struct drm_encoder_helper_funcs *helpers + = encoder->helper_private; + helpers->mode_set(encoder, &crtc->saved_mode, + &crtc->saved_adjusted_mode); + } + } + } + return 0; +} + +/* + * Return the list of HDMI DDC modes if available. + */ +static int cdv_hdmi_get_modes(struct drm_connector *connector) +{ + struct psb_intel_output *psb_intel_output = + to_psb_intel_output(connector); + struct edid *edid = NULL; + int ret = 0; + + edid = drm_get_edid(&psb_intel_output->base, + psb_intel_output->hdmi_i2c_adapter); + if (edid) { + drm_mode_connector_update_edid_property(&psb_intel_output-> + base, edid); + ret = drm_add_edid_modes(&psb_intel_output->base, edid); + kfree(edid); + } + return ret; +} + +static int cdv_hdmi_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + + if (mode->clock > 165000) + return MODE_CLOCK_HIGH; + if (mode->clock < 20000) + return MODE_CLOCK_HIGH; + + /* just in case */ + if (mode->flags & DRM_MODE_FLAG_DBLSCAN) + return MODE_NO_DBLESCAN; + + /* just in case */ + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + return MODE_NO_INTERLACE; + + /* + * FIXME: for now we limit the size to 1680x1050 on CDV, otherwise it + * will go beyond the stolen memory size allocated to the framebuffer + */ + if (mode->hdisplay > 1680) + return MODE_PANEL; + if (mode->vdisplay > 1050) + return MODE_PANEL; + return MODE_OK; +} + +static void cdv_hdmi_destroy(struct drm_connector *connector) +{ + struct psb_intel_output *psb_intel_output = + to_psb_intel_output(connector); + + if (psb_intel_output->ddc_bus) + psb_intel_i2c_destroy(psb_intel_output->ddc_bus); + drm_sysfs_connector_remove(connector); + drm_connector_cleanup(connector); + kfree(connector); +} + +static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { + .dpms = cdv_hdmi_dpms, + .mode_fixup = cdv_hdmi_mode_fixup, + .prepare = psb_intel_encoder_prepare, + .mode_set = cdv_hdmi_mode_set, + .commit = psb_intel_encoder_commit, +}; + +static const struct drm_connector_helper_funcs + cdv_hdmi_connector_helper_funcs = { + .get_modes = cdv_hdmi_get_modes, + .mode_valid = cdv_hdmi_mode_valid, + .best_encoder = psb_intel_best_encoder, +}; + +static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { + .dpms = drm_helper_connector_dpms, + .save = cdv_hdmi_save, + .restore = cdv_hdmi_restore, + .detect = cdv_hdmi_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .set_property = cdv_hdmi_set_property, + .destroy = cdv_hdmi_destroy, +}; + +void cdv_hdmi_init(struct drm_device *dev, + struct psb_intel_mode_device *mode_dev, int reg) +{ + struct psb_intel_output *psb_intel_output; + struct drm_connector *connector; + struct drm_encoder *encoder; + struct mid_intel_hdmi_priv *hdmi_priv; + int ddc_bus; + + psb_intel_output = kzalloc(sizeof(struct psb_intel_output) + + sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); + if (!psb_intel_output) + return; + + hdmi_priv = (struct mid_intel_hdmi_priv *)(psb_intel_output + 1); + psb_intel_output->mode_dev = mode_dev; + connector = &psb_intel_output->base; + encoder = &psb_intel_output->enc; + drm_connector_init(dev, &psb_intel_output->base, + &cdv_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_DVID); + + drm_encoder_init(dev, &psb_intel_output->enc, &psb_intel_lvds_enc_funcs, + DRM_MODE_ENCODER_TMDS); + + drm_mode_connector_attach_encoder(&psb_intel_output->base, + &psb_intel_output->enc); + psb_intel_output->type = INTEL_OUTPUT_HDMI; + hdmi_priv->hdmi_reg = reg; + hdmi_priv->has_hdmi_sink = false; + psb_intel_output->dev_priv = hdmi_priv; + + drm_encoder_helper_add(encoder, &cdv_hdmi_helper_funcs); + drm_connector_helper_add(connector, + &cdv_hdmi_connector_helper_funcs); + connector->display_info.subpixel_order = SubPixelHorizontalRGB; + connector->interlace_allowed = false; + connector->doublescan_allowed = false; + + drm_connector_attach_property(connector, + dev->mode_config.scaling_mode_property, DRM_MODE_SCALE_FULLSCREEN); + + switch (reg) { + case SDVOB: + ddc_bus = GPIOE; + break; + case SDVOC: + ddc_bus = GPIOD; + break; + default: + DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); + goto failed_ddc; + break; + } + + psb_intel_output->ddc_bus = psb_intel_i2c_create(dev, + ddc_bus, (reg == SDVOB) ? "HDMIB" : "HDMIC"); + + if (!psb_intel_output->ddc_bus) { + dev_err(dev->dev, "No ddc adapter available!\n"); + goto failed_ddc; + } + psb_intel_output->hdmi_i2c_adapter = + &(psb_intel_output->ddc_bus->adapter); + hdmi_priv->dev = dev; + drm_sysfs_connector_add(connector); + return; + +failed_ddc: + drm_encoder_cleanup(&psb_intel_output->enc); + drm_connector_cleanup(&psb_intel_output->base); + kfree(psb_intel_output); +} |