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;
+}