[PATCH v3 15/15] drm/i915: add AUO MIPI DSI display sub-encoder

Jani Nikula
2013-08-27T12:11:41Z

From: Shobhit Kumar <shobhit.kumar@intel.com>

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/auo_dsi_display.c | 182 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_dsi.c | 5 +
drivers/gpu/drm/i915/intel_dsi.h | 3 +
4 files changed, 191 insertions(+)
create mode 100644 drivers/gpu/drm/i915/auo_dsi_display.c

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 65e60d2..18bf236 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -42,6 +42,7 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
intel_opregion.o \
intel_sideband.o \
intel_uncore.o \
+ auo_dsi_display.o \
dvo_ch7xxx.o \
dvo_ch7017.o \
dvo_ivch.o \
diff --git a/drivers/gpu/drm/i915/auo_dsi_display.c b/drivers/gpu/drm/i915/auo_dsi_display.c
new file mode 100644
index 0000000..771a725
--- /dev/null
+++ b/drivers/gpu/drm/i915/auo_dsi_display.c
@@ -0,0 +1,182 @@
+/*
+ * Copyright © 2013 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.
+ *
+ * Author: Jani Nikula <jani.nikula@intel.com>
+ * Shobhit Kumar <shobhit.kumar@intel.com>
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_edid.h>
+#include <drm/i915_drm.h>
+#include <linux/slab.h>
+#include <video/mipi_display.h>
+#include "i915_drv.h"
+#include "intel_drv.h"
+#include "intel_dsi.h"
+#include "intel_dsi_cmd.h"
+
+#if 0 /* XXX */
+static void auo_vid_get_panel_info(int pipe, struct drm_connector *connector)
+{
+ DRM_DEBUG_KMS("\n");
+ if (!connector)
+ return;
+
+ if (pipe == 0) {
+ connector->display_info.width_mm = 216;
+ connector->display_info.height_mm = 135;
+ }
+
+ return;
+}
+#endif
+
+static bool auo_init(struct intel_dsi_device *dsi)
+{
+ struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
+
+ DRM_DEBUG_KMS("\n");
+
+ intel_dsi->eot_disable = 0;
+ intel_dsi->pixel_format = VID_MODE_FORMAT_RGB888;
+ intel_dsi->video_mode_format = VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE;
+ intel_dsi->lane_count = 4;
+
+ return true;
+}
+
+static void auo_enable(struct intel_dsi_device *dsi)
+{
+ struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
+
+ DRM_DEBUG_KMS("\n");
+
+ dsi_vc_dcs_write_0(intel_dsi, 0, MIPI_DCS_EXIT_SLEEP_MODE);
+
+ dsi_vc_dcs_write_1(intel_dsi, 0, MIPI_DCS_SET_TEAR_ON, 0x00);
+
+ dsi_vc_dcs_write_0(intel_dsi, 0, MIPI_DCS_SET_DISPLAY_ON);
+ dsi_vc_dcs_write_1(intel_dsi, 0, 0x14, 0x55);
+}
+
+static void auo_disable(struct intel_dsi_device *dsi)
+{
+ struct intel_dsi *intel_dsi = container_of(dsi, struct intel_dsi, dev);
+
+ DRM_DEBUG_KMS("\n");
+
+ dsi_vc_dcs_write_0(intel_dsi, 0, MIPI_DCS_SET_DISPLAY_OFF);
+ dsi_vc_dcs_write_0(intel_dsi, 0, MIPI_DCS_ENTER_SLEEP_MODE);
+}
+
+static int auo_mode_valid(struct intel_dsi_device *dsi,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static bool auo_mode_fixup(struct intel_dsi_device *dsi,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void auo_mode_set(struct intel_dsi_device *dsi,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+}
+
+static enum drm_connector_status auo_detect(struct intel_dsi_device *dsi)
+{
+ return connector_status_connected;
+}
+
+static bool auo_get_hw_state(struct intel_dsi_device *dev)
+{
+ return true;
+}
+
+static struct drm_display_mode *auo_get_modes(struct intel_dsi_device *dsi)
+{
+ struct drm_display_mode *mode = NULL;
+ u32 hblank = 0x78;
+ u32 vblank = 0x0C;
+ u32 hsync_offset = 0x28;
+ u32 hsync_width = 0x28;
+ u32 vsync_offset = 0x4;
+ u32 vsync_width = 0x4;
+
+ /* Allocate */
+ mode = kzalloc(sizeof(*mode), GFP_KERNEL);
+ if (!mode) {
+ DRM_DEBUG_KMS("AUO Panel: No memory\n");
+ return NULL;
+ }
+
+ /* Hardcode 1920x1200*/
+ strcpy(mode->name, "1920x1200");
+ mode->hdisplay = 0x780;
+ mode->vdisplay = 0x4B0;
+ mode->vrefresh = 60;
+ mode->clock = 148350;
+
+ /* Calculate */
+ mode->hsync_start = mode->hdisplay + hsync_offset;
+ mode->hsync_end = mode->hdisplay + hsync_offset
+ + hsync_width;
+ mode->htotal = mode->hdisplay + hblank;
+ mode->vsync_start = mode->vdisplay + vsync_offset;
+ mode->vsync_end = mode->vdisplay + vsync_offset
+ + vsync_width;
+ mode->vtotal = mode->vdisplay + vblank;
+
+ /* Configure */
+ mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC;
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+ mode->status = MODE_OK;
+
+ return mode;
+}
+
+static void auo_destroy(struct intel_dsi_device *dsi)
+{
+}
+
+/* Callbacks. We might not need them all. */
+struct intel_dsi_dev_ops auo_dsi_display_ops = {
+ .init = auo_init,
+#if 0 /* XXX */
+ .get_info = auo_vid_get_panel_info,
+#endif
+ .enable = auo_enable,
+ .disable = auo_disable,
+ .mode_valid = auo_mode_valid,
+ .mode_fixup = auo_mode_fixup,
+ .mode_set = auo_mode_set,
+ .detect = auo_detect,
+ .get_hw_state = auo_get_hw_state,
+ .get_modes = auo_get_modes,
+ .destroy = auo_destroy,
+};
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 674fd49..b30fea9 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -35,6 +35,11 @@

/* the sub-encoders aka panel drivers */
static const struct intel_dsi_device intel_dsi_devices[] = {
+ {
+ .type = INTEL_DSI_VIDEO_MODE,
+ .name = "auo-dsi-vid-mode-display",
+ .dev_ops = &auo_dsi_display_ops,
+ },
};

diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index c7765f3..e1b5657 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -99,4 +99,7 @@ static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);
extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);

+/* the panel drivers */
+extern struct intel_dsi_dev_ops auo_dsi_display_ops;
+
#endif /* _INTEL_DSI_H */
--
1.7.9.5

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