From 1b082ccf5901108d3acd860a73d8c0442556c0bb Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Thu, 3 Nov 2011 18:22:26 +0000
Subject: gma500: Add Oaktrail support
Oaktrail (GMA600) is found on some tablet/slate PC type systems. It's a bit
different to the GMA500 but similar enough it makes sense to plug it into
the same driver.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/gma500/oaktrail_hdmi.c | 852 +++++++++++++++++++++++++++++++++
1 file changed, 852 insertions(+)
create mode 100644 drivers/gpu/drm/gma500/oaktrail_hdmi.c
(limited to 'drivers/gpu/drm/gma500/oaktrail_hdmi.c')
diff --git a/drivers/gpu/drm/gma500/oaktrail_hdmi.c b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
new file mode 100644
index 000000000000..6f423c01c209
--- /dev/null
+++ b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
@@ -0,0 +1,852 @@
+/*
+ * Copyright © 2010 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:
+ * Li Peng <peng.li@intel.com>
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include "psb_intel_drv.h"
+#include "psb_intel_reg.h"
+#include "psb_drv.h"
+
+#define HDMI_READ(reg) readl(hdmi_dev->regs + (reg))
+#define HDMI_WRITE(reg, val) writel(val, hdmi_dev->regs + (reg))
+
+#define HDMI_HCR 0x1000
+#define HCR_ENABLE_HDCP (1 << 5)
+#define HCR_ENABLE_AUDIO (1 << 2)
+#define HCR_ENABLE_PIXEL (1 << 1)
+#define HCR_ENABLE_TMDS (1 << 0)
+
+#define HDMI_HICR 0x1004
+#define HDMI_HSR 0x1008
+#define HDMI_HISR 0x100C
+#define HDMI_DETECT_HDP (1 << 0)
+
+#define HDMI_VIDEO_REG 0x3000
+#define HDMI_UNIT_EN (1 << 7)
+#define HDMI_MODE_OUTPUT (1 << 0)
+#define HDMI_HBLANK_A 0x3100
+
+#define HDMI_AUDIO_CTRL 0x4000
+#define HDMI_ENABLE_AUDIO (1 << 0)
+
+#define PCH_HTOTAL_B 0x3100
+#define PCH_HBLANK_B 0x3104
+#define PCH_HSYNC_B 0x3108
+#define PCH_VTOTAL_B 0x310C
+#define PCH_VBLANK_B 0x3110
+#define PCH_VSYNC_B 0x3114
+#define PCH_PIPEBSRC 0x311C
+
+#define PCH_PIPEB_DSL 0x3800
+#define PCH_PIPEB_SLC 0x3804
+#define PCH_PIPEBCONF 0x3808
+#define PCH_PIPEBSTAT 0x3824
+
+#define CDVO_DFT 0x5000
+#define CDVO_SLEWRATE 0x5004
+#define CDVO_STRENGTH 0x5008
+#define CDVO_RCOMP 0x500C
+
+#define DPLL_CTRL 0x6000
+#define DPLL_PDIV_SHIFT 16
+#define DPLL_PDIV_MASK (0xf << 16)
+#define DPLL_PWRDN (1 << 4)
+#define DPLL_RESET (1 << 3)
+#define DPLL_FASTEN (1 << 2)
+#define DPLL_ENSTAT (1 << 1)
+#define DPLL_DITHEN (1 << 0)
+
+#define DPLL_DIV_CTRL 0x6004
+#define DPLL_CLKF_MASK 0xffffffc0
+#define DPLL_CLKR_MASK (0x3f)
+
+#define DPLL_CLK_ENABLE 0x6008
+#define DPLL_EN_DISP (1 << 31)
+#define DPLL_SEL_HDMI (1 << 8)
+#define DPLL_EN_HDMI (1 << 1)
+#define DPLL_EN_VGA (1 << 0)
+
+#define DPLL_ADJUST 0x600C
+#define DPLL_STATUS 0x6010
+#define DPLL_UPDATE 0x6014
+#define DPLL_DFT 0x6020
+
+struct intel_range {
+ int min, max;
+};
+
+struct oaktrail_hdmi_limit {
+ struct intel_range vco, np, nr, nf;
+};
+
+struct oaktrail_hdmi_clock {
+ int np;
+ int nr;
+ int nf;
+ int dot;
+};
+
+#define VCO_MIN 320000
+#define VCO_MAX 1650000
+#define NP_MIN 1
+#define NP_MAX 15
+#define NR_MIN 1
+#define NR_MAX 64
+#define NF_MIN 2
+#define NF_MAX 4095
+
+static const struct oaktrail_hdmi_limit oaktrail_hdmi_limit = {
+ .vco = { .min = VCO_MIN, .max = VCO_MAX },
+ .np = { .min = NP_MIN, .max = NP_MAX },
+ .nr = { .min = NR_MIN, .max = NR_MAX },
+ .nf = { .min = NF_MIN, .max = NF_MAX },
+};
+
+static void wait_for_vblank(struct drm_device *dev)
+{
+ /* FIXME: Can we do this as a sleep ? */
+ /* Wait for 20ms, i.e. one cycle at 50hz. */
+ mdelay(20);
+}
+
+static void scu_busy_loop(void *scu_base)
+{
+ u32 status = 0;
+ u32 loop_count = 0;
+
+ status = readl(scu_base + 0x04);
+ while (status & 1) {
+ udelay(1); /* scu processing time is in few u secods */
+ status = readl(scu_base + 0x04);
+ loop_count++;
+ /* break if scu doesn't reset busy bit after huge retry */
+ if (loop_count > 1000) {
+ DRM_DEBUG_KMS("SCU IPC timed out");
+ return;
+ }
+ }
+}
+
+static void oaktrail_hdmi_reset(struct drm_device *dev)
+{
+ void *base;
+ /* FIXME: at least make these defines */
+ unsigned int scu_ipc_mmio = 0xff11c000;
+ int scu_len = 1024;
+
+ base = ioremap((resource_size_t)scu_ipc_mmio, scu_len);
+ if (base == NULL) {
+ DRM_ERROR("failed to map SCU mmio\n");
+ return;
+ }
+
+ /* scu ipc: assert hdmi controller reset */
+ writel(0xff11d118, base + 0x0c);
+ writel(0x7fffffdf, base + 0x80);
+ writel(0x42005, base + 0x0);
+ scu_busy_loop(base);
+
+ /* scu ipc: de-assert hdmi controller reset */
+ writel(0xff11d118, base + 0x0c);
+ writel(0x7fffffff, base + 0x80);
+ writel(0x42005, base + 0x0);
+ scu_busy_loop(base);
+
+ iounmap(base);
+}
+
+static void oaktrail_hdmi_audio_enable(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+
+ HDMI_WRITE(HDMI_HCR, 0x67);
+ HDMI_READ(HDMI_HCR);
+
+ HDMI_WRITE(0x51a8, 0x10);
+ HDMI_READ(0x51a8);
+
+ HDMI_WRITE(HDMI_AUDIO_CTRL, 0x1);
+ HDMI_READ(HDMI_AUDIO_CTRL);
+}
+
+static void oaktrail_hdmi_audio_disable(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+
+ HDMI_WRITE(0x51a8, 0x0);
+ HDMI_READ(0x51a8);
+
+ HDMI_WRITE(HDMI_AUDIO_CTRL, 0x0);
+ HDMI_READ(HDMI_AUDIO_CTRL);
+
+ HDMI_WRITE(HDMI_HCR, 0x47);
+ HDMI_READ(HDMI_HCR);
+}
+
+void oaktrail_crtc_hdmi_dpms(struct drm_crtc *crtc, int mode)
+{
+ struct drm_device *dev = crtc->dev;
+ u32 temp;
+
+ switch (mode) {
+ case DRM_MODE_DPMS_OFF:
+ /* Disable VGACNTRL */
+ REG_WRITE(VGACNTRL, 0x80000000);
+
+ /* Disable plane */
+ temp = REG_READ(DSPBCNTR);
+ if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
+ REG_WRITE(DSPBCNTR, temp & ~DISPLAY_PLANE_ENABLE);
+ REG_READ(DSPBCNTR);
+ /* Flush the plane changes */
+ REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
+ REG_READ(DSPBSURF);
+ }
+
+ /* Disable pipe B */
+ temp = REG_READ(PIPEBCONF);
+ if ((temp & PIPEACONF_ENABLE) != 0) {
+ REG_WRITE(PIPEBCONF, temp & ~PIPEACONF_ENABLE);
+ REG_READ(PIPEBCONF);
+ }
+
+ /* Disable LNW Pipes, etc */
+ temp = REG_READ(PCH_PIPEBCONF);
+ if ((temp & PIPEACONF_ENABLE) != 0) {
+ REG_WRITE(PCH_PIPEBCONF, temp & ~PIPEACONF_ENABLE);
+ REG_READ(PCH_PIPEBCONF);
+ }
+ /* wait for pipe off */
+ udelay(150);
+ /* Disable dpll */
+ temp = REG_READ(DPLL_CTRL);
+ if ((temp & DPLL_PWRDN) == 0) {
+ REG_WRITE(DPLL_CTRL, temp | (DPLL_PWRDN | DPLL_RESET));
+ REG_WRITE(DPLL_STATUS, 0x1);
+ }
+ /* wait for dpll off */
+ udelay(150);
+ break;
+ case DRM_MODE_DPMS_ON:
+ case DRM_MODE_DPMS_STANDBY:
+ case DRM_MODE_DPMS_SUSPEND:
+ /* Enable dpll */
+ temp = REG_READ(DPLL_CTRL);
+ if ((temp & DPLL_PWRDN) != 0) {
+ REG_WRITE(DPLL_CTRL, temp & ~(DPLL_PWRDN | DPLL_RESET));
+ temp = REG_READ(DPLL_CLK_ENABLE);
+ REG_WRITE(DPLL_CLK_ENABLE, temp | DPLL_EN_DISP | DPLL_SEL_HDMI | DPLL_EN_HDMI);
+ REG_READ(DPLL_CLK_ENABLE);
+ }
+ /* wait for dpll warm up */
+ udelay(150);
+
+ /* Enable pipe B */
+ temp = REG_READ(PIPEBCONF);
+ if ((temp & PIPEACONF_ENABLE) == 0) {
+ REG_WRITE(PIPEBCONF, temp | PIPEACONF_ENABLE);
+ REG_READ(PIPEBCONF);
+ }
+
+ /* Enable LNW Pipe B */
+ temp = REG_READ(PCH_PIPEBCONF);
+ if ((temp & PIPEACONF_ENABLE) == 0) {
+ REG_WRITE(PCH_PIPEBCONF, temp | PIPEACONF_ENABLE);
+ REG_READ(PCH_PIPEBCONF);
+ }
+ wait_for_vblank(dev);
+
+ /* Enable plane */
+ temp = REG_READ(DSPBCNTR);
+ if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
+ REG_WRITE(DSPBCNTR, temp | DISPLAY_PLANE_ENABLE);
+ /* Flush the plane changes */
+ REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
+ REG_READ(DSPBSURF);
+ }
+ psb_intel_crtc_load_lut(crtc);
+ }
+ /* DSPARB */
+ REG_WRITE(DSPARB, 0x00003fbf);
+ /* FW1 */
+ REG_WRITE(0x70034, 0x3f880a0a);
+ /* FW2 */
+ REG_WRITE(0x70038, 0x0b060808);
+ /* FW4 */
+ REG_WRITE(0x70050, 0x08030404);
+ /* FW5 */
+ REG_WRITE(0x70054, 0x04040404);
+ /* LNC Chicken Bits */
+ REG_WRITE(0x70400, 0x4000);
+}
+
+
+static void oaktrail_hdmi_dpms(struct drm_encoder *encoder, int mode)
+{
+ static int dpms_mode = -1;
+
+ struct drm_device *dev = encoder->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ u32 temp;
+
+ if (dpms_mode == mode)
+ return;
+
+ if (mode != DRM_MODE_DPMS_ON)
+ temp = 0x0;
+ else
+ temp = 0x99;
+
+ dpms_mode = mode;
+ HDMI_WRITE(HDMI_VIDEO_REG, temp);
+}
+
+static unsigned int htotal_calculate(struct drm_display_mode *mode)
+{
+ u32 htotal, new_crtc_htotal;
+
+ htotal = (mode->crtc_hdisplay - 1) | ((mode->crtc_htotal - 1) << 16);
+
+ /*
+ * 1024 x 768 new_crtc_htotal = 0x1024;
+ * 1280 x 1024 new_crtc_htotal = 0x0c34;
+ */
+ new_crtc_htotal = (mode->crtc_htotal - 1) * 200 * 1000 / mode->clock;
+
+ return (mode->crtc_hdisplay - 1) | (new_crtc_htotal << 16);
+}
+
+static void oaktrail_hdmi_find_dpll(struct drm_crtc *crtc, int target,
+ int refclk, struct oaktrail_hdmi_clock *best_clock)
+{
+ int np_min, np_max, nr_min, nr_max;
+ int np, nr, nf;
+
+ np_min = DIV_ROUND_UP(oaktrail_hdmi_limit.vco.min, target * 10);
+ np_max = oaktrail_hdmi_limit.vco.max / (target * 10);
+ if (np_min < oaktrail_hdmi_limit.np.min)
+ np_min = oaktrail_hdmi_limit.np.min;
+ if (np_max > oaktrail_hdmi_limit.np.max)
+ np_max = oaktrail_hdmi_limit.np.max;
+
+ nr_min = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_max));
+ nr_max = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_min));
+ if (nr_min < oaktrail_hdmi_limit.nr.min)
+ nr_min = oaktrail_hdmi_limit.nr.min;
+ if (nr_max > oaktrail_hdmi_limit.nr.max)
+ nr_max = oaktrail_hdmi_limit.nr.max;
+
+ np = DIV_ROUND_UP((refclk * 1000), (target * 10 * nr_max));
+ nr = DIV_ROUND_UP((refclk * 1000), (target * 10 * np));
+ nf = DIV_ROUND_CLOSEST((target * 10 * np * nr), refclk);
+ DRM_DEBUG_KMS("np, nr, nf %d %d %d\n", np, nr, nf);
+
+ /*
+ * 1024 x 768 np = 1; nr = 0x26; nf = 0x0fd8000;
+ * 1280 x 1024 np = 1; nr = 0x17; nf = 0x1034000;
+ */
+ best_clock->np = np;
+ best_clock->nr = nr - 1;
+ best_clock->nf = (nf << 14);
+}
+
+int oaktrail_crtc_hdmi_mode_set(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode,
+ int x, int y,
+ struct drm_framebuffer *old_fb)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ int pipe = 1;
+ int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
+ int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
+ int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
+ int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
+ int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
+ int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
+ int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
+ int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
+ int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
+ int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
+ int refclk;
+ struct oaktrail_hdmi_clock clock;
+ u32 dspcntr, pipeconf, dpll, temp;
+ int dspcntr_reg = DSPBCNTR;
+
+ /* Disable the VGA plane that we never use */
+ REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
+
+ /* XXX: Disable the panel fitter if it was on our pipe */
+
+ /* Disable dpll if necessary */
+ dpll = REG_READ(DPLL_CTRL);
+ if ((dpll & DPLL_PWRDN) == 0) {
+ REG_WRITE(DPLL_CTRL, dpll | (DPLL_PWRDN | DPLL_RESET));
+ REG_WRITE(DPLL_DIV_CTRL, 0x00000000);
+ REG_WRITE(DPLL_STATUS, 0x1);
+ }
+ udelay(150);
+
+ /* reset controller: FIXME - can we sort out the ioremap mess ? */
+ iounmap(hdmi_dev->regs);
+ oaktrail_hdmi_reset(dev);
+
+ /* program and enable dpll */
+ refclk = 25000;
+ oaktrail_hdmi_find_dpll(crtc, adjusted_mode->clock, refclk, &clock);
+
+ /* Setting DPLL */
+ dpll = REG_READ(DPLL_CTRL);
+ dpll &= ~DPLL_PDIV_MASK;
+ dpll &= ~(DPLL_PWRDN | DPLL_RESET);
+ REG_WRITE(DPLL_CTRL, 0x00000008);
+ REG_WRITE(DPLL_DIV_CTRL, ((clock.nf << 6) | clock.nr));
+ REG_WRITE(DPLL_ADJUST, ((clock.nf >> 14) - 1));
+ REG_WRITE(DPLL_CTRL, (dpll | (clock.np << DPLL_PDIV_SHIFT) | DPLL_ENSTAT | DPLL_DITHEN));
+ REG_WRITE(DPLL_UPDATE, 0x80000000);
+ REG_WRITE(DPLL_CLK_ENABLE, 0x80050102);
+ udelay(150);
+
+ hdmi_dev->regs = ioremap(hdmi_dev->mmio, hdmi_dev->mmio_len);
+ if (hdmi_dev->regs == NULL) {
+ DRM_ERROR("failed to do hdmi mmio mapping\n");
+ return -ENOMEM;
+ }
+
+ /* configure HDMI */
+ HDMI_WRITE(0x1004, 0x1fd);
+ HDMI_WRITE(0x2000, 0x1);
+ HDMI_WRITE(0x2008, 0x0);
+ HDMI_WRITE(0x3130, 0x8);
+ HDMI_WRITE(0x101c, 0x1800810);
+
+ temp = htotal_calculate(adjusted_mode);
+ REG_WRITE(htot_reg, temp);
+ REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
+ REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
+ REG_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
+ REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
+ REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
+ REG_WRITE(pipesrc_reg,
+ ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
+
+ REG_WRITE(PCH_HTOTAL_B, (adjusted_mode->crtc_hdisplay - 1) | ((adjusted_mode->crtc_htotal - 1) << 16));
+ REG_WRITE(PCH_HBLANK_B, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
+ REG_WRITE(PCH_HSYNC_B, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
+ REG_WRITE(PCH_VTOTAL_B, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
+ REG_WRITE(PCH_VBLANK_B, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
+ REG_WRITE(PCH_VSYNC_B, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
+ REG_WRITE(PCH_PIPEBSRC,
+ ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
+
+ temp = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
+ HDMI_WRITE(HDMI_HBLANK_A, ((adjusted_mode->crtc_hdisplay - 1) << 16) | temp);
+
+ REG_WRITE(dspsize_reg,
+ ((mode->vdisplay - 1) << 16) | (mode->hdisplay - 1));
+ REG_WRITE(dsppos_reg, 0);
+
+ /* Flush the plane changes */
+ {
+ struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+ crtc_funcs->mode_set_base(crtc, x, y, old_fb);
+ }
+
+ /* Set up the display plane register */
+ dspcntr = REG_READ(dspcntr_reg);
+ dspcntr |= DISPPLANE_GAMMA_ENABLE;
+ dspcntr |= DISPPLANE_SEL_PIPE_B;
+ dspcntr |= DISPLAY_PLANE_ENABLE;
+
+ /* setup pipeconf */
+ pipeconf = REG_READ(pipeconf_reg);
+ pipeconf |= PIPEACONF_ENABLE;
+
+ REG_WRITE(pipeconf_reg, pipeconf);
+ REG_READ(pipeconf_reg);
+
+ REG_WRITE(PCH_PIPEBCONF, pipeconf);
+ REG_READ(PCH_PIPEBCONF);
+ wait_for_vblank(dev);
+
+ REG_WRITE(dspcntr_reg, dspcntr);
+ wait_for_vblank(dev);
+
+ return 0;
+}
+
+static int oaktrail_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_LOW;
+
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return MODE_NO_DBLESCAN;
+
+ return MODE_OK;
+}
+
+static bool oaktrail_hdmi_mode_fixup(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static enum drm_connector_status
+oaktrail_hdmi_detect(struct drm_connector *connector, bool force)
+{
+ enum drm_connector_status status;
+ struct drm_device *dev = connector->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ u32 temp;
+
+ temp = HDMI_READ(HDMI_HSR);
+ DRM_DEBUG_KMS("HDMI_HSR %x\n", temp);
+
+ if ((temp & HDMI_DETECT_HDP) != 0)
+ status = connector_status_connected;
+ else
+ status = connector_status_disconnected;
+
+ return status;
+}
+
+static const unsigned char raw_edid[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x10, 0xac, 0x2f, 0xa0,
+ 0x53, 0x55, 0x33, 0x30, 0x16, 0x13, 0x01, 0x03, 0x0e, 0x3a, 0x24, 0x78,
+ 0xea, 0xe9, 0xf5, 0xac, 0x51, 0x30, 0xb4, 0x25, 0x11, 0x50, 0x54, 0xa5,
+ 0x4b, 0x00, 0x81, 0x80, 0xa9, 0x40, 0x71, 0x4f, 0xb3, 0x00, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x28, 0x3c, 0x80, 0xa0, 0x70, 0xb0,
+ 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x46, 0x6c, 0x21, 0x00, 0x00, 0x1a,
+ 0x00, 0x00, 0x00, 0xff, 0x00, 0x47, 0x4e, 0x37, 0x32, 0x31, 0x39, 0x35,
+ 0x52, 0x30, 0x33, 0x55, 0x53, 0x0a, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x44,
+ 0x45, 0x4c, 0x4c, 0x20, 0x32, 0x37, 0x30, 0x39, 0x57, 0x0a, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4c, 0x1e, 0x53, 0x11, 0x00, 0x0a,
+ 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x8d
+};
+
+static int oaktrail_hdmi_get_modes(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct i2c_adapter *i2c_adap;
+ struct edid *edid;
+ struct drm_display_mode *mode, *t;
+ int i = 0, ret = 0;
+
+ i2c_adap = i2c_get_adapter(3);
+ if (i2c_adap == NULL) {
+ DRM_ERROR("No ddc adapter available!\n");
+ edid = (struct edid *)raw_edid;
+ } else {
+ edid = (struct edid *)raw_edid;
+ /* FIXME ? edid = drm_get_edid(connector, i2c_adap); */
+ }
+
+ if (edid) {
+ drm_mode_connector_update_edid_property(connector, edid);
+ ret = drm_add_edid_modes(connector, edid);
+ connector->display_info.raw_edid = NULL;
+ }
+
+ /*
+ * prune modes that require frame buffer bigger than stolen mem
+ */
+ list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
+ if ((mode->hdisplay * mode->vdisplay * 4) >= dev_priv->vram_stolen_size) {
+ i++;
+ drm_mode_remove(connector, mode);
+ }
+ }
+ return ret - i;
+}
+
+static void oaktrail_hdmi_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct drm_device *dev = encoder->dev;
+
+ oaktrail_hdmi_audio_enable(dev);
+ return;
+}
+
+static void oaktrail_hdmi_destroy(struct drm_connector *connector)
+{
+ return;
+}
+
+static const struct drm_encoder_helper_funcs oaktrail_hdmi_helper_funcs = {
+ .dpms = oaktrail_hdmi_dpms,
+ .mode_fixup = oaktrail_hdmi_mode_fixup,
+ .prepare = psb_intel_encoder_prepare,
+ .mode_set = oaktrail_hdmi_mode_set,
+ .commit = psb_intel_encoder_commit,
+};
+
+static const struct drm_connector_helper_funcs
+ oaktrail_hdmi_connector_helper_funcs = {
+ .get_modes = oaktrail_hdmi_get_modes,
+ .mode_valid = oaktrail_hdmi_mode_valid,
+ .best_encoder = psb_intel_best_encoder,
+};
+
+static const struct drm_connector_funcs oaktrail_hdmi_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .detect = oaktrail_hdmi_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = oaktrail_hdmi_destroy,
+};
+
+static void oaktrail_hdmi_enc_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs oaktrail_hdmi_enc_funcs = {
+ .destroy = oaktrail_hdmi_enc_destroy,
+};
+
+void oaktrail_hdmi_init(struct drm_device *dev,
+ struct psb_intel_mode_device *mode_dev)
+{
+ struct psb_intel_output *psb_intel_output;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+
+ psb_intel_output = kzalloc(sizeof(struct psb_intel_output), GFP_KERNEL);
+ if (!psb_intel_output)
+ return;
+
+ 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,
+ &oaktrail_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_DVID);
+
+ drm_encoder_init(dev, &psb_intel_output->enc,
+ &oaktrail_hdmi_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;
+ drm_encoder_helper_add(encoder, &oaktrail_hdmi_helper_funcs);
+ drm_connector_helper_add(connector, &oaktrail_hdmi_connector_helper_funcs);
+
+ connector->display_info.subpixel_order = SubPixelHorizontalRGB;
+ connector->interlace_allowed = false;
+ connector->doublescan_allowed = false;
+ drm_sysfs_connector_add(connector);
+
+ return;
+}
+
+static DEFINE_PCI_DEVICE_TABLE(hdmi_ids) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080d) },
+ {}
+};
+
+void oaktrail_hdmi_setup(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct pci_dev *pdev;
+ struct oaktrail_hdmi_dev *hdmi_dev;
+ int ret;
+
+ pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x080d, NULL);
+ if (!pdev)
+ return;
+
+ hdmi_dev = kzalloc(sizeof(struct oaktrail_hdmi_dev), GFP_KERNEL);
+ if (!hdmi_dev) {
+ dev_err(dev->dev, "failed to allocate memory\n");
+ goto out;
+ }
+
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ dev_err(dev->dev, "failed to enable hdmi controller\n");
+ goto free;
+ }
+
+ hdmi_dev->mmio = pci_resource_start(pdev, 0);
+ hdmi_dev->mmio_len = pci_resource_len(pdev, 0);
+ hdmi_dev->regs = ioremap(hdmi_dev->mmio, hdmi_dev->mmio_len);
+ if (!hdmi_dev->regs) {
+ dev_err(dev->dev, "failed to map hdmi mmio\n");
+ goto free;
+ }
+
+ hdmi_dev->dev = pdev;
+ pci_set_drvdata(pdev, hdmi_dev);
+
+ /* Initialize i2c controller */
+ ret = oaktrail_hdmi_i2c_init(hdmi_dev->dev);
+ if (ret)
+ dev_err(dev->dev, "HDMI I2C initialization failed\n");
+
+ dev_priv->hdmi_priv = hdmi_dev;
+ oaktrail_hdmi_audio_disable(dev);
+ return;
+
+free:
+ kfree(hdmi_dev);
+out:
+ return;
+}
+
+void oaktrail_hdmi_teardown(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ struct pci_dev *pdev;
+
+ if (hdmi_dev) {
+ pdev = hdmi_dev->dev;
+ pci_set_drvdata(pdev, NULL);
+ oaktrail_hdmi_i2c_exit(pdev);
+ iounmap(hdmi_dev->regs);
+ kfree(hdmi_dev);
+ pci_dev_put(pdev);
+ }
+}
+
+/* save HDMI register state */
+void oaktrail_hdmi_save(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ int i;
+
+ /* dpll */
+ hdmi_dev->saveDPLL_CTRL = PSB_RVDC32(DPLL_CTRL);
+ hdmi_dev->saveDPLL_DIV_CTRL = PSB_RVDC32(DPLL_DIV_CTRL);
+ hdmi_dev->saveDPLL_ADJUST = PSB_RVDC32(DPLL_ADJUST);
+ hdmi_dev->saveDPLL_UPDATE = PSB_RVDC32(DPLL_UPDATE);
+ hdmi_dev->saveDPLL_CLK_ENABLE = PSB_RVDC32(DPLL_CLK_ENABLE);
+
+ /* pipe B */
+ dev_priv->savePIPEBCONF = PSB_RVDC32(PIPEBCONF);
+ dev_priv->savePIPEBSRC = PSB_RVDC32(PIPEBSRC);
+ dev_priv->saveHTOTAL_B = PSB_RVDC32(HTOTAL_B);
+ dev_priv->saveHBLANK_B = PSB_RVDC32(HBLANK_B);
+ dev_priv->saveHSYNC_B = PSB_RVDC32(HSYNC_B);
+ dev_priv->saveVTOTAL_B = PSB_RVDC32(VTOTAL_B);
+ dev_priv->saveVBLANK_B = PSB_RVDC32(VBLANK_B);
+ dev_priv->saveVSYNC_B = PSB_RVDC32(VSYNC_B);
+
+ hdmi_dev->savePCH_PIPEBCONF = PSB_RVDC32(PCH_PIPEBCONF);
+ hdmi_dev->savePCH_PIPEBSRC = PSB_RVDC32(PCH_PIPEBSRC);
+ hdmi_dev->savePCH_HTOTAL_B = PSB_RVDC32(PCH_HTOTAL_B);
+ hdmi_dev->savePCH_HBLANK_B = PSB_RVDC32(PCH_HBLANK_B);
+ hdmi_dev->savePCH_HSYNC_B = PSB_RVDC32(PCH_HSYNC_B);
+ hdmi_dev->savePCH_VTOTAL_B = PSB_RVDC32(PCH_VTOTAL_B);
+ hdmi_dev->savePCH_VBLANK_B = PSB_RVDC32(PCH_VBLANK_B);
+ hdmi_dev->savePCH_VSYNC_B = PSB_RVDC32(PCH_VSYNC_B);
+
+ /* plane */
+ dev_priv->saveDSPBCNTR = PSB_RVDC32(DSPBCNTR);
+ dev_priv->saveDSPBSTRIDE = PSB_RVDC32(DSPBSTRIDE);
+ dev_priv->saveDSPBADDR = PSB_RVDC32(DSPBBASE);
+ dev_priv->saveDSPBSURF = PSB_RVDC32(DSPBSURF);
+ dev_priv->saveDSPBLINOFF = PSB_RVDC32(DSPBLINOFF);
+ dev_priv->saveDSPBTILEOFF = PSB_RVDC32(DSPBTILEOFF);
+
+ /* cursor B */
+ dev_priv->saveDSPBCURSOR_CTRL = PSB_RVDC32(CURBCNTR);
+ dev_priv->saveDSPBCURSOR_BASE = PSB_RVDC32(CURBBASE);
+ dev_priv->saveDSPBCURSOR_POS = PSB_RVDC32(CURBPOS);
+
+ /* save palette */
+ for (i = 0; i < 256; i++)
+ dev_priv->save_palette_b[i] = PSB_RVDC32(PALETTE_B + (i << 2));
+}
+
+/* restore HDMI register state */
+void oaktrail_hdmi_restore(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
+ int i;
+
+ /* dpll */
+ PSB_WVDC32(hdmi_dev->saveDPLL_CTRL, DPLL_CTRL);
+ PSB_WVDC32(hdmi_dev->saveDPLL_DIV_CTRL, DPLL_DIV_CTRL);
+ PSB_WVDC32(hdmi_dev->saveDPLL_ADJUST, DPLL_ADJUST);
+ PSB_WVDC32(hdmi_dev->saveDPLL_UPDATE, DPLL_UPDATE);
+ PSB_WVDC32(hdmi_dev->saveDPLL_CLK_ENABLE, DPLL_CLK_ENABLE);
+ DRM_UDELAY(150);
+
+ /* pipe */
+ PSB_WVDC32(dev_priv->savePIPEBSRC, PIPEBSRC);
+ PSB_WVDC32(dev_priv->saveHTOTAL_B, HTOTAL_B);
+ PSB_WVDC32(dev_priv->saveHBLANK_B, HBLANK_B);
+ PSB_WVDC32(dev_priv->saveHSYNC_B, HSYNC_B);
+ PSB_WVDC32(dev_priv->saveVTOTAL_B, VTOTAL_B);
+ PSB_WVDC32(dev_priv->saveVBLANK_B, VBLANK_B);
+ PSB_WVDC32(dev_priv->saveVSYNC_B, VSYNC_B);
+
+ PSB_WVDC32(hdmi_dev->savePCH_PIPEBSRC, PCH_PIPEBSRC);
+ PSB_WVDC32(hdmi_dev->savePCH_HTOTAL_B, PCH_HTOTAL_B);
+ PSB_WVDC32(hdmi_dev->savePCH_HBLANK_B, PCH_HBLANK_B);
+ PSB_WVDC32(hdmi_dev->savePCH_HSYNC_B, PCH_HSYNC_B);
+ PSB_WVDC32(hdmi_dev->savePCH_VTOTAL_B, PCH_VTOTAL_B);
+ PSB_WVDC32(hdmi_dev->savePCH_VBLANK_B, PCH_VBLANK_B);
+ PSB_WVDC32(hdmi_dev->savePCH_VSYNC_B, PCH_VSYNC_B);
+
+ PSB_WVDC32(dev_priv->savePIPEBCONF, PIPEBCONF);
+ PSB_WVDC32(hdmi_dev->savePCH_PIPEBCONF, PCH_PIPEBCONF);
+
+ /* plane */
+ PSB_WVDC32(dev_priv->saveDSPBLINOFF, DSPBLINOFF);
+ PSB_WVDC32(dev_priv->saveDSPBSTRIDE, DSPBSTRIDE);
+ PSB_WVDC32(dev_priv->saveDSPBTILEOFF, DSPBTILEOFF);
+ PSB_WVDC32(dev_priv->saveDSPBCNTR, DSPBCNTR);
+ PSB_WVDC32(dev_priv->saveDSPBSURF, DSPBSURF);
+
+ /* cursor B */
+ PSB_WVDC32(dev_priv->saveDSPBCURSOR_CTRL, CURBCNTR);
+ PSB_WVDC32(dev_priv->saveDSPBCURSOR_POS, CURBPOS);
+ PSB_WVDC32(dev_priv->saveDSPBCURSOR_BASE, CURBBASE);
+
+ /* restore palette */
+ for (i = 0; i < 256; i++)
+ PSB_WVDC32(dev_priv->save_palette_b[i], PALETTE_B + (i << 2));
+}
--
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