diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dvo.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dvo.c | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c new file mode 100644 index 00000000000..8b8d6e65cd3 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_dvo.c @@ -0,0 +1,495 @@ +/* + * Copyright 2006 Dave Airlie <airlied@linux.ie> + * 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 "drmP.h" +#include "drm.h" +#include "drm_crtc.h" +#include "intel_drv.h" +#include "i915_drm.h" +#include "i915_drv.h" +#include "dvo.h" + +#define SIL164_ADDR 0x38 +#define CH7xxx_ADDR 0x76 +#define TFP410_ADDR 0x38 + +static struct intel_dvo_device intel_dvo_devices[] = { + { + .type = INTEL_DVO_CHIP_TMDS, + .name = "sil164", + .dvo_reg = DVOC, + .slave_addr = SIL164_ADDR, + .dev_ops = &sil164_ops, + }, + { + .type = INTEL_DVO_CHIP_TMDS, + .name = "ch7xxx", + .dvo_reg = DVOC, + .slave_addr = CH7xxx_ADDR, + .dev_ops = &ch7xxx_ops, + }, + { + .type = INTEL_DVO_CHIP_LVDS, + .name = "ivch", + .dvo_reg = DVOA, + .slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */ + .dev_ops = &ivch_ops, + }, + { + .type = INTEL_DVO_CHIP_TMDS, + .name = "tfp410", + .dvo_reg = DVOC, + .slave_addr = TFP410_ADDR, + .dev_ops = &tfp410_ops, + }, + { + .type = INTEL_DVO_CHIP_LVDS, + .name = "ch7017", + .dvo_reg = DVOC, + .slave_addr = 0x75, + .gpio = GPIOE, + .dev_ops = &ch7017_ops, + } +}; + +static void intel_dvo_dpms(struct drm_encoder *encoder, int mode) +{ + struct drm_i915_private *dev_priv = encoder->dev->dev_private; + struct intel_output *intel_output = enc_to_intel_output(encoder); + struct intel_dvo_device *dvo = intel_output->dev_priv; + u32 dvo_reg = dvo->dvo_reg; + u32 temp = I915_READ(dvo_reg); + + if (mode == DRM_MODE_DPMS_ON) { + I915_WRITE(dvo_reg, temp | DVO_ENABLE); + I915_READ(dvo_reg); + dvo->dev_ops->dpms(dvo, mode); + } else { + dvo->dev_ops->dpms(dvo, mode); + I915_WRITE(dvo_reg, temp & ~DVO_ENABLE); + I915_READ(dvo_reg); + } +} + +static void intel_dvo_save(struct drm_connector *connector) +{ + struct drm_i915_private *dev_priv = connector->dev->dev_private; + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + /* Each output should probably just save the registers it touches, + * but for now, use more overkill. + */ + dev_priv->saveDVOA = I915_READ(DVOA); + dev_priv->saveDVOB = I915_READ(DVOB); + dev_priv->saveDVOC = I915_READ(DVOC); + + dvo->dev_ops->save(dvo); +} + +static void intel_dvo_restore(struct drm_connector *connector) +{ + struct drm_i915_private *dev_priv = connector->dev->dev_private; + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + dvo->dev_ops->restore(dvo); + + I915_WRITE(DVOA, dev_priv->saveDVOA); + I915_WRITE(DVOB, dev_priv->saveDVOB); + I915_WRITE(DVOC, dev_priv->saveDVOC); +} + +static int intel_dvo_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + if (mode->flags & DRM_MODE_FLAG_DBLSCAN) + return MODE_NO_DBLESCAN; + + /* XXX: Validate clock range */ + + if (dvo->panel_fixed_mode) { + if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay) + return MODE_PANEL; + if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay) + return MODE_PANEL; + } + + return dvo->dev_ops->mode_valid(dvo, mode); +} + +static bool intel_dvo_mode_fixup(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct intel_output *intel_output = enc_to_intel_output(encoder); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + /* If 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. + */ + if (dvo->panel_fixed_mode != NULL) { +#define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x + C(hdisplay); + C(hsync_start); + C(hsync_end); + C(htotal); + C(vdisplay); + C(vsync_start); + C(vsync_end); + C(vtotal); + C(clock); + drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); +#undef C + } + + if (dvo->dev_ops->mode_fixup) + return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode); + + return true; +} + +static void intel_dvo_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_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); + struct intel_output *intel_output = enc_to_intel_output(encoder); + struct intel_dvo_device *dvo = intel_output->dev_priv; + int pipe = intel_crtc->pipe; + u32 dvo_val; + u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg; + int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; + + switch (dvo_reg) { + case DVOA: + default: + dvo_srcdim_reg = DVOA_SRCDIM; + break; + case DVOB: + dvo_srcdim_reg = DVOB_SRCDIM; + break; + case DVOC: + dvo_srcdim_reg = DVOC_SRCDIM; + break; + } + + dvo->dev_ops->mode_set(dvo, mode, adjusted_mode); + + /* Save the data order, since I don't know what it should be set to. */ + dvo_val = I915_READ(dvo_reg) & + (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG); + dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE | + DVO_BLANK_ACTIVE_HIGH; + + if (pipe == 1) + dvo_val |= DVO_PIPE_B_SELECT; + dvo_val |= DVO_PIPE_STALL; + if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) + dvo_val |= DVO_HSYNC_ACTIVE_HIGH; + if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) + dvo_val |= DVO_VSYNC_ACTIVE_HIGH; + + I915_WRITE(dpll_reg, I915_READ(dpll_reg) | DPLL_DVO_HIGH_SPEED); + + /*I915_WRITE(DVOB_SRCDIM, + (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | + (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/ + I915_WRITE(dvo_srcdim_reg, + (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | + (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT)); + /*I915_WRITE(DVOB, dvo_val);*/ + I915_WRITE(dvo_reg, dvo_val); +} + +/** + * Detect the output connection on our DVO device. + * + * Unimplemented. + */ +static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector) +{ + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + return dvo->dev_ops->detect(dvo); +} + +static int intel_dvo_get_modes(struct drm_connector *connector) +{ + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + /* We should probably have an i2c driver get_modes function for those + * devices which will have a fixed set of modes determined by the chip + * (TV-out, for example), but for now with just TMDS and LVDS, + * that's not the case. + */ + intel_ddc_get_modes(intel_output); + if (!list_empty(&connector->probed_modes)) + return 1; + + + if (dvo->panel_fixed_mode != NULL) { + struct drm_display_mode *mode; + mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode); + if (mode) { + drm_mode_probed_add(connector, mode); + return 1; + } + } + return 0; +} + +static void intel_dvo_destroy (struct drm_connector *connector) +{ + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + + if (dvo) { + if (dvo->dev_ops->destroy) + dvo->dev_ops->destroy(dvo); + if (dvo->panel_fixed_mode) + kfree(dvo->panel_fixed_mode); + /* no need, in i830_dvoices[] now */ + //kfree(dvo); + } + if (intel_output->i2c_bus) + intel_i2c_destroy(intel_output->i2c_bus); + if (intel_output->ddc_bus) + intel_i2c_destroy(intel_output->ddc_bus); + drm_sysfs_connector_remove(connector); + drm_connector_cleanup(connector); + kfree(intel_output); +} + +#ifdef RANDR_GET_CRTC_INTERFACE +static struct drm_crtc *intel_dvo_get_crtc(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT); + + return intel_pipe_to_crtc(pScrn, pipe); +} +#endif + +static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = { + .dpms = intel_dvo_dpms, + .mode_fixup = intel_dvo_mode_fixup, + .prepare = intel_encoder_prepare, + .mode_set = intel_dvo_mode_set, + .commit = intel_encoder_commit, +}; + +static const struct drm_connector_funcs intel_dvo_connector_funcs = { + .save = intel_dvo_save, + .restore = intel_dvo_restore, + .detect = intel_dvo_detect, + .destroy = intel_dvo_destroy, + .fill_modes = drm_helper_probe_single_connector_modes, +}; + +static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = { + .mode_valid = intel_dvo_mode_valid, + .get_modes = intel_dvo_get_modes, + .best_encoder = intel_best_encoder, +}; + +static void intel_dvo_enc_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +static const struct drm_encoder_funcs intel_dvo_enc_funcs = { + .destroy = intel_dvo_enc_destroy, +}; + + +/** + * Attempts to get a fixed panel timing for LVDS (currently only the i830). + * + * Other chips with DVO LVDS will need to extend this to deal with the LVDS + * chip being on DVOB/C and having multiple pipes. + */ +static struct drm_display_mode * +intel_dvo_get_current_mode (struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_output *intel_output = to_intel_output(connector); + struct intel_dvo_device *dvo = intel_output->dev_priv; + uint32_t dvo_reg = dvo->dvo_reg; + uint32_t dvo_val = I915_READ(dvo_reg); + struct drm_display_mode *mode = NULL; + + /* If the DVO port is active, that'll be the LVDS, so we can pull out + * its timings to get how the BIOS set up the panel. + */ + if (dvo_val & DVO_ENABLE) { + struct drm_crtc *crtc; + int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0; + + crtc = intel_get_crtc_from_pipe(dev, pipe); + if (crtc) { + mode = intel_crtc_mode_get(dev, crtc); + + if (mode) { + mode->type |= DRM_MODE_TYPE_PREFERRED; + if (dvo_val & DVO_HSYNC_ACTIVE_HIGH) + mode->flags |= DRM_MODE_FLAG_PHSYNC; + if (dvo_val & DVO_VSYNC_ACTIVE_HIGH) + mode->flags |= DRM_MODE_FLAG_PVSYNC; + } + } + } + return mode; +} + +void intel_dvo_init(struct drm_device *dev) +{ + struct intel_output *intel_output; + struct intel_dvo_device *dvo; + struct intel_i2c_chan *i2cbus = NULL; + int ret = 0; + int i; + int gpio_inited = 0; + int encoder_type = DRM_MODE_ENCODER_NONE; + intel_output = kzalloc (sizeof(struct intel_output), GFP_KERNEL); + if (!intel_output) + return; + + /* Set up the DDC bus */ + intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D"); + if (!intel_output->ddc_bus) + goto free_intel; + + /* Now, try to find a controller */ + for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) { + struct drm_connector *connector = &intel_output->base; + int gpio; + + dvo = &intel_dvo_devices[i]; + + /* Allow the I2C driver info to specify the GPIO to be used in + * special cases, but otherwise default to what's defined + * in the spec. + */ + if (dvo->gpio != 0) + gpio = dvo->gpio; + else if (dvo->type == INTEL_DVO_CHIP_LVDS) + gpio = GPIOB; + else + gpio = GPIOE; + + /* Set up the I2C bus necessary for the chip we're probing. + * It appears that everything is on GPIOE except for panels + * on i830 laptops, which are on GPIOB (DVOA). + */ + if (gpio_inited != gpio) { + if (i2cbus != NULL) + intel_i2c_destroy(i2cbus); + if (!(i2cbus = intel_i2c_create(dev, gpio, + gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) { + continue; + } + gpio_inited = gpio; + } + + if (dvo->dev_ops!= NULL) + ret = dvo->dev_ops->init(dvo, i2cbus); + else + ret = false; + + if (!ret) + continue; + + intel_output->type = INTEL_OUTPUT_DVO; + switch (dvo->type) { + case INTEL_DVO_CHIP_TMDS: + drm_connector_init(dev, connector, + &intel_dvo_connector_funcs, + DRM_MODE_CONNECTOR_DVII); + encoder_type = DRM_MODE_ENCODER_TMDS; + break; + case INTEL_DVO_CHIP_LVDS: + drm_connector_init(dev, connector, + &intel_dvo_connector_funcs, + DRM_MODE_CONNECTOR_LVDS); + encoder_type = DRM_MODE_ENCODER_LVDS; + break; + } + + drm_connector_helper_add(connector, + &intel_dvo_connector_helper_funcs); + connector->display_info.subpixel_order = SubPixelHorizontalRGB; + connector->interlace_allowed = false; + connector->doublescan_allowed = false; + + intel_output->dev_priv = dvo; + intel_output->i2c_bus = i2cbus; + + drm_encoder_init(dev, &intel_output->enc, + &intel_dvo_enc_funcs, encoder_type); + drm_encoder_helper_add(&intel_output->enc, + &intel_dvo_helper_funcs); + + drm_mode_connector_attach_encoder(&intel_output->base, + &intel_output->enc); + if (dvo->type == INTEL_DVO_CHIP_LVDS) { + /* For our LVDS chipsets, we should hopefully be able + * to dig the fixed panel mode out of the BIOS data. + * However, it's in a different format from the BIOS + * data on chipsets with integrated LVDS (stored in AIM + * headers, likely), so for now, just get the current + * mode being output through DVO. + */ + dvo->panel_fixed_mode = + intel_dvo_get_current_mode(connector); + dvo->panel_wants_dither = true; + } + + drm_sysfs_connector_add(connector); + return; + } + + intel_i2c_destroy(intel_output->ddc_bus); + /* Didn't find a chip, so tear down. */ + if (i2cbus != NULL) + intel_i2c_destroy(i2cbus); +free_intel: + kfree(intel_output); +} |