[PATCH 1/3] drm/layerscape: Add fsl dcu DRM driver
Jianwei Wang
b52261 at freescale.com
Fri Mar 13 02:44:17 PDT 2015
This patch add support for Two Dimensional Animation and Compositing
Engine (2D-ACE) on Freescale SoCs.
2D-ACE is a Freescale display controller. It provide an hardware
cursor.
This is a simplified version, only a primary plane, a fb created for
fbdev, a crtc, a connector for TFT LCD panel, an encoder, and the
encoder is not in use.
Signed-off-by: Alison Wang <b18965 at freescale.com>
Signed-off-by: Xiubo Li <lixiubo at cmss.chinamobile.com>
Signed-off-by: Jianwei Wang <b52261 at freescale.com>
---
Changed in v2:
- Add atomic support
- Modify bindings file
- Rename node for compatibility
- Move platform related code out for compatibility
Added in v1:
- Add support for DCU display controller on the Freescale LS102x SoCs.
- Create a primary plane, a fb created for fbdev, a crtc, a connector
for TFT LCD panel, an encoder.
arch/arm/mach-imx/mach-ls1021a.c | 36 ++++
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/fsl/Kconfig | 17 ++
drivers/gpu/drm/fsl/Makefile | 8 +
drivers/gpu/drm/fsl/fsl_dcu_drm_connector.c | 203 ++++++++++++++++++++
drivers/gpu/drm/fsl/fsl_dcu_drm_connector.h | 28 +++
drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.c | 164 ++++++++++++++++
drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.h | 26 +++
drivers/gpu/drm/fsl/fsl_dcu_drm_drv.c | 288 ++++++++++++++++++++++++++++
drivers/gpu/drm/fsl/fsl_dcu_drm_drv.h | 168 ++++++++++++++++
drivers/gpu/drm/fsl/fsl_dcu_drm_fbdev.c | 26 +++
drivers/gpu/drm/fsl/fsl_dcu_drm_kms.c | 42 ++++
drivers/gpu/drm/fsl/fsl_dcu_drm_kms.h | 17 ++
drivers/gpu/drm/fsl/fsl_dcu_drm_plane.c | 187 ++++++++++++++++++
drivers/gpu/drm/fsl/fsl_dcu_drm_plane.h | 23 +++
include/linux/fsl/dcu.h | 22 +++
17 files changed, 1258 insertions(+)
create mode 100644 drivers/gpu/drm/fsl/Kconfig
create mode 100644 drivers/gpu/drm/fsl/Makefile
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_connector.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_connector.h
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.h
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_drv.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_drv.h
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_fbdev.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_kms.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_kms.h
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_plane.c
create mode 100644 drivers/gpu/drm/fsl/fsl_dcu_drm_plane.h
create mode 100644 include/linux/fsl/dcu.h
diff --git a/arch/arm/mach-imx/mach-ls1021a.c b/arch/arm/mach-imx/mach-ls1021a.c
index b89c858..4fb346d 100644
--- a/arch/arm/mach-imx/mach-ls1021a.c
+++ b/arch/arm/mach-imx/mach-ls1021a.c
@@ -8,9 +8,44 @@
*/
#include <asm/mach/arch.h>
+#include <linux/of_platform.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/fsl/dcu.h>
#include "common.h"
+void dcu_pixclk_disable(void)
+{
+ struct regmap *scfg_regmap;
+
+ scfg_regmap = syscon_regmap_lookup_by_compatible("fsl,ls1021a-scfg");
+ if (IS_ERR(scfg_regmap)) {
+ pr_err("No syscfg phandle specified\n");
+ return;
+ }
+
+ regmap_write(scfg_regmap, SCFG_PIXCLKCR, PXCK_DISABLE);
+}
+
+void dcu_pixclk_enable(void)
+{
+ struct regmap *scfg_regmap;
+
+ scfg_regmap = syscon_regmap_lookup_by_compatible("fsl,ls1021a-scfg");
+ if (IS_ERR(scfg_regmap)) {
+ pr_err("No syscfg phandle specified\n");
+ return;
+ }
+
+ regmap_write(scfg_regmap, SCFG_PIXCLKCR, PXCK_ENABLE);
+}
+
+static void __init ls1021a_init_machine(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ dcu_pixclk_enable();
+}
static const char * const ls1021a_dt_compat[] __initconst = {
"fsl,ls1021a",
NULL,
@@ -18,5 +53,6 @@ static const char * const ls1021a_dt_compat[] __initconst = {
DT_MACHINE_START(LS1021A, "Freescale LS1021A")
.smp = smp_ops(ls1021a_smp_ops),
+ .init_machine = ls1021a_init_machine,
.dt_compat = ls1021a_dt_compat,
MACHINE_END
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 151a050..a6957aa 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -199,6 +199,8 @@ source "drivers/gpu/drm/bochs/Kconfig"
source "drivers/gpu/drm/msm/Kconfig"
+source "drivers/gpu/drm/fsl/Kconfig"
+
source "drivers/gpu/drm/tegra/Kconfig"
source "drivers/gpu/drm/panel/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 2c239b9..ab5b9ef 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_DRM_UDL) += udl/
obj-$(CONFIG_DRM_AST) += ast/
obj-$(CONFIG_DRM_ARMADA) += armada/
obj-$(CONFIG_DRM_ATMEL_HLCDC) += atmel-hlcdc/
+obj-$(CONFIG_DRM_FSL_DCU) += fsl/
obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/
obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
obj-$(CONFIG_DRM_OMAP) += omapdrm/
diff --git a/drivers/gpu/drm/fsl/Kconfig b/drivers/gpu/drm/fsl/Kconfig
new file mode 100644
index 0000000..e4f8df0
--- /dev/null
+++ b/drivers/gpu/drm/fsl/Kconfig
@@ -0,0 +1,17 @@
+config DRM_FSL_DCU
+ tristate "DRM Support for Freescale DCU"
+ depends on DRM && OF && ARM
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select VIDEOMODE_HELPERS
+ select BACKLIGHT_CLASS_DEVICE
+ select BACKLIGHT_LCD_SUPPORT
+ select REGMAP_MMIO
+ select DRM_KMS_FB_HELPER
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ help
+ Choose this option if you have an Freescale DCU chipset.
+ If M is selected the module will be called fsl-dcu-drm.
diff --git a/drivers/gpu/drm/fsl/Makefile b/drivers/gpu/drm/fsl/Makefile
new file mode 100644
index 0000000..5f74aee
--- /dev/null
+++ b/drivers/gpu/drm/fsl/Makefile
@@ -0,0 +1,8 @@
+fsl-dcu-drm-y := fsl_dcu_drm_drv.o \
+ fsl_dcu_drm_kms.o \
+ fsl_dcu_drm_connector.o \
+ fsl_dcu_drm_plane.o \
+ fsl_dcu_drm_crtc.o \
+ fsl_dcu_drm_fbdev.o \
+
+obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu-drm.o
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.c
new file mode 100644
index 0000000..178d647
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/backlight.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <video/of_display_timing.h>
+
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_connector.h"
+
+static void fsl_dcu_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+}
+
+/* Disable the encoders as the first thing we do. */
+static void fsl_dcu_drm_encoder_mode_prepare(struct drm_encoder *encoder)
+{
+}
+
+static void fsl_dcu_drm_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void fsl_dcu_drm_encoder_mode_commit(struct drm_encoder *encoder)
+{
+}
+
+static void fsl_dcu_drm_encoder_disable(struct drm_encoder *encoder)
+{
+}
+
+static int
+fsl_dcu_drm_encoder_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ return 0;
+}
+
+static bool
+fsl_dcu_drm_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void fsl_dcu_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
+ .dpms = fsl_dcu_drm_encoder_dpms,
+ .prepare = fsl_dcu_drm_encoder_mode_prepare,
+ .commit = fsl_dcu_drm_encoder_mode_commit,
+ .mode_set = fsl_dcu_drm_encoder_mode_set,
+ .disable = fsl_dcu_drm_encoder_disable,
+ .atomic_check = fsl_dcu_drm_encoder_atomic_check,
+ .mode_fixup = fsl_dcu_drm_encoder_mode_fixup,
+};
+
+static const struct drm_encoder_funcs encoder_funcs = {
+ .destroy = fsl_dcu_drm_encoder_destroy,
+};
+
+int fsl_dcu_drm_encoder_create(struct fsl_dcu_drm_device *fsl_dev)
+{
+ struct drm_encoder *encoder = &fsl_dev->encoder;
+ int ret;
+
+ encoder->possible_crtcs = 1;
+
+ ret = drm_encoder_init(fsl_dev->ddev, encoder, &encoder_funcs,
+ DRM_MODE_ENCODER_LVDS);
+ if (ret < 0)
+ return ret;
+
+ drm_encoder_helper_add(encoder, &encoder_helper_funcs);
+
+ return 0;
+}
+
+#define to_fsl_dcu_connector(connector) \
+ container_of(connector, struct fsl_dcu_drm_connector, connector)
+
+static int fsl_dcu_drm_connector_get_modes(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct device_node *display_np, *np = dev->dev->of_node;
+ struct drm_display_mode *mode = drm_mode_create(connector->dev);
+ int num_modes = 0;
+
+ if (np) {
+ display_np = of_parse_phandle(np, "display", 0);
+ if (!display_np) {
+ dev_err(dev->dev, "failed to find display phandle\n");
+ return num_modes;
+ }
+ of_get_drm_display_mode(display_np, mode, OF_USE_NATIVE_MODE);
+ mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+ drm_mode_probed_add(connector, mode);
+ num_modes++;
+ }
+
+ return num_modes;
+}
+
+static int fsl_dcu_drm_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+fsl_dcu_drm_connector_best_encoder(struct drm_connector *connector)
+{
+ struct fsl_dcu_drm_connector *fsl_con = to_fsl_dcu_connector(connector);
+
+ return fsl_con->encoder;
+}
+
+static void fsl_dcu_drm_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status
+fsl_dcu_drm_connector_detect(struct drm_connector *connector, bool force)
+{
+ return connector_status_connected;
+}
+
+static const struct drm_connector_funcs fsl_dcu_drm_connector_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .reset = drm_atomic_helper_connector_reset,
+ .detect = fsl_dcu_drm_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = fsl_dcu_drm_connector_destroy,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+ .get_modes = fsl_dcu_drm_connector_get_modes,
+ .mode_valid = fsl_dcu_drm_connector_mode_valid,
+ .best_encoder = fsl_dcu_drm_connector_best_encoder,
+};
+
+int fsl_dcu_drm_connector_create(struct fsl_dcu_drm_device *fsl_dev,
+ struct drm_encoder *encoder)
+{
+ struct drm_connector *connector = &fsl_dev->connector.connector;
+ int ret;
+
+ fsl_dev->connector.encoder = encoder;
+
+ connector->display_info.width_mm = 0;
+ connector->display_info.height_mm = 0;
+
+ ret = drm_connector_init(fsl_dev->ddev, connector,
+ &fsl_dcu_drm_connector_funcs,
+ DRM_MODE_CONNECTOR_LVDS);
+ if (ret < 0)
+ return ret;
+
+ connector->dpms = DRM_MODE_DPMS_OFF;
+ drm_connector_helper_add(connector, &connector_helper_funcs);
+ ret = drm_connector_register(connector);
+ if (ret < 0)
+ goto err_cleanup;
+
+ ret = drm_mode_connector_attach_encoder(connector, encoder);
+ if (ret < 0)
+ goto err_sysfs;
+
+ connector->encoder = encoder;
+
+ drm_object_property_set_value
+ (&connector->base, fsl_dev->ddev->mode_config.dpms_property,
+ DRM_MODE_DPMS_OFF);
+
+ return 0;
+
+err_sysfs:
+ drm_connector_unregister(connector);
+err_cleanup:
+ drm_connector_cleanup(connector);
+ return ret;
+}
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.h b/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.h
new file mode 100644
index 0000000..afe44ab
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_connector.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_DRM_CONNECTOR_H__
+#define __FSL_DCU_DRM_CONNECTOR_H__
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+
+struct fsl_dcu_drm_device;
+struct fsl_dcu_drm_connector {
+ struct drm_connector connector;
+ struct drm_encoder *encoder;
+};
+
+int fsl_dcu_drm_encoder_create(struct fsl_dcu_drm_device *fsl_dev);
+int fsl_dcu_drm_connector_create(struct fsl_dcu_drm_device *fsl_dev,
+ struct drm_encoder *encoder);
+
+#endif /* __FSL_DCU_DRM_CONNECTOR_H__ */
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.c
new file mode 100644
index 0000000..a43e7ce
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/regmap.h>
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+
+#include "fsl_dcu_drm_crtc.h"
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_plane.h"
+
+#define to_fsl_dcu_crtc(c) container_of(c, struct fsl_dcu_drm_crtc, crtc)
+
+void fsl_dcu_drm_crtc_suspend(struct drm_crtc *crtc)
+{
+}
+
+static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
+ struct drm_display_mode *mode = &crtc->state->mode;
+ uint32_t hbp, hfp, hsw, vbp, vfp, vsw, div, index;
+
+ DBG(": set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
+ mode->base.id, mode->name,
+ mode->vrefresh, mode->clock,
+ mode->hdisplay, mode->hsync_start,
+ mode->hsync_end, mode->htotal,
+ mode->vdisplay, mode->vsync_start,
+ mode->vsync_end, mode->vtotal,
+ mode->type, mode->flags);
+
+ index = drm_crtc_index(crtc);
+ div = (uint32_t)clk_get_rate(fsl_dev->clk) / mode->clock / 1000;
+
+ /* Configure timings: */
+ hbp = mode->htotal - mode->hsync_end;
+ hfp = mode->hsync_start - mode->hdisplay;
+ hsw = mode->hsync_end - mode->hsync_start;
+ vbp = mode->vtotal - mode->vsync_end;
+ vfp = mode->vsync_start - mode->vdisplay;
+ vsw = mode->vsync_end - mode->vsync_start;
+
+ regmap_write(fsl_dev->regmap, DCU_HSYN_PARA,
+ DCU_HSYN_PARA_BP(hbp) |
+ DCU_HSYN_PARA_PW(hsw) |
+ DCU_HSYN_PARA_FP(hfp));
+ regmap_write(fsl_dev->regmap, DCU_VSYN_PARA,
+ DCU_VSYN_PARA_BP(vbp) |
+ DCU_VSYN_PARA_PW(vsw) |
+ DCU_VSYN_PARA_FP(vfp));
+ regmap_write(fsl_dev->regmap, DCU_DISP_SIZE,
+ DCU_DISP_SIZE_DELTA_Y(mode->vdisplay) |
+ DCU_DISP_SIZE_DELTA_X(mode->hdisplay));
+ regmap_write(fsl_dev->regmap, DCU_DIV_RATIO, div);
+ regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
+}
+
+static bool fsl_dcu_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void fsl_dcu_drm_crtc_prepare(struct drm_crtc *crtc)
+{
+}
+
+/* Now enable the clocks, plane, pipe, and connectors that we set up. */
+static void fsl_dcu_drm_crtc_mode_commit(struct drm_crtc *crtc)
+{
+}
+
+static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ return 0;
+}
+
+static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc)
+{
+}
+
+static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc)
+{
+}
+
+static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
+{
+}
+
+static const struct drm_crtc_funcs fsl_dcu_drm_crtc_funcs = {
+ .page_flip = drm_atomic_helper_page_flip,
+ .set_config = drm_crtc_helper_set_config,
+ .destroy = drm_crtc_cleanup,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+static void fsl_dcu_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+}
+
+static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
+ .disable = fsl_dcu_drm_disable_crtc,
+ .mode_fixup = fsl_dcu_drm_crtc_mode_fixup,
+ .mode_set = drm_helper_crtc_mode_set,
+ .mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
+ .mode_set_base = drm_helper_crtc_mode_set_base,
+ .prepare = fsl_dcu_drm_crtc_prepare,
+ .commit = fsl_dcu_drm_crtc_mode_commit,
+ .atomic_check = fsl_dcu_drm_crtc_atomic_check,
+ .atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
+ .atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
+ .dpms = fsl_dcu_drm_crtc_dpms,
+};
+
+int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
+{
+ struct drm_plane *primary;
+ struct drm_crtc *crtc = &fsl_dev->crtc.crtc;
+ int ret;
+
+ fsl_dev->crtc.dpms = DRM_MODE_DPMS_OFF;
+
+ primary = fsl_dcu_drm_primary_create_plane(fsl_dev->ddev);
+ ret = drm_crtc_init_with_planes(fsl_dev->ddev, crtc, primary, NULL,
+ &fsl_dcu_drm_crtc_funcs);
+ if (ret < 0)
+ return ret;
+
+ drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
+
+ regmap_write(fsl_dev->regmap, DCU_SYN_POL,
+ DCU_SYN_POL_INV_VS_LOW | DCU_SYN_POL_INV_HS_LOW);
+ regmap_write(fsl_dev->regmap, DCU_BGND, DCU_BGND_R(0) |
+ DCU_BGND_G(0) | DCU_BGND_B(0));
+ regmap_write(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_BLEND_ITER(1) | DCU_MODE_RASTER_EN);
+ regmap_write(fsl_dev->regmap, DCU_THRESHOLD,
+ DCU_THRESHOLD_LS_BF_VS(BF_VS_VAL) |
+ DCU_THRESHOLD_OUT_BUF_HIGH(BUF_MAX_VAL) |
+ DCU_THRESHOLD_OUT_BUF_LOW(BUF_MIN_VAL));
+ regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
+ DCU_MODE_DCU_MODE_MASK,
+ DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
+ regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
+ return 0;
+}
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.h b/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.h
new file mode 100644
index 0000000..d44b564
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_crtc.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_DRM_CRTC_H__
+#define __FSL_DCU_DRM_CRTC_H__
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+
+struct fsl_dcu_drm_device;
+struct fsl_dcu_drm_crtc {
+ struct drm_crtc crtc;
+ int dpms;
+};
+
+int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev);
+
+#endif /* __FSL_DCU_DRM_CRTC_H__ */
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.c
new file mode 100644
index 0000000..10975ee
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.c
@@ -0,0 +1,288 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <drm/drmP.h>
+#include <linux/fsl/dcu.h>
+
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_kms.h"
+
+static int fsl_dcu_unload(struct drm_device *dev)
+{
+ drm_mode_config_cleanup(dev);
+ drm_vblank_cleanup(dev);
+ drm_irq_uninstall(dev);
+
+ dev->dev_private = NULL;
+
+ return 0;
+}
+
+static struct regmap_config fsl_dcu_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+};
+
+static int fsl_dcu_bypass_tcon(struct fsl_dcu_drm_device *fsl_dev,
+ struct device_node *np)
+{
+ struct device_node *tcon_np;
+ struct platform_device *pdev;
+ struct clk *tcon_clk;
+ struct resource *res;
+ void __iomem *base;
+
+ tcon_np = of_parse_phandle(np, "tcon-controller", 0);
+ if (!tcon_np)
+ return -EINVAL;
+
+ pdev = of_find_device_by_node(tcon_np);
+ if (!pdev)
+ return -EINVAL;
+
+ tcon_clk = devm_clk_get(&pdev->dev, "tcon");
+ if (IS_ERR(tcon_clk))
+ return PTR_ERR(tcon_clk);
+ clk_prepare_enable(tcon_clk);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ fsl_dev->tcon_regmap = devm_regmap_init_mmio_clk(&pdev->dev,
+ "tcon", base, &fsl_dcu_regmap_config);
+ if (IS_ERR(fsl_dev->tcon_regmap)) {
+ dev_err(&pdev->dev, "regmap init failed\n");
+ return PTR_ERR(fsl_dev->tcon_regmap);
+ }
+
+ regmap_write(fsl_dev->tcon_regmap, TCON_CTRL1, TCON_BYPASS_ENABLE);
+ return 0;
+}
+
+static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
+{
+ struct platform_device *pdev = dev->platformdev;
+ struct fsl_dcu_drm_device *fsl_dev;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ fsl_dev = devm_kzalloc(&pdev->dev, sizeof(*fsl_dev), GFP_KERNEL);
+ if (!fsl_dev)
+ return -ENOMEM;
+
+ fsl_dev->dev = &pdev->dev;
+ fsl_dev->ddev = dev;
+ dev->dev_private = fsl_dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base)) {
+ ret = PTR_ERR(base);
+ return ret;
+ }
+
+ fsl_dev->regmap = devm_regmap_init_mmio(&pdev->dev,
+ base, &fsl_dcu_regmap_config);
+ if (IS_ERR(fsl_dev->regmap)) {
+ dev_err(&pdev->dev, "regmap init failed\n");
+ return PTR_ERR(fsl_dev->regmap);
+ }
+
+ ret = fsl_dcu_drm_modeset_init(fsl_dev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to initialize mode setting\n");
+ return ret;
+ }
+
+ ret = drm_vblank_init(dev, 1);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to initialize vblank\n");
+ goto done;
+ }
+
+ ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to install IRQ handler\n");
+ goto done;
+ }
+
+ /* Put TCON in bypass mode, so the input signals from DCU are passed
+ * through TCON unchanged */
+ fsl_dcu_bypass_tcon(fsl_dev, pdev->dev.of_node);
+
+ fsl_dev->clk = devm_clk_get(&pdev->dev, "dcu");
+ if (IS_ERR(fsl_dev->clk)) {
+ ret = PTR_ERR(fsl_dev->clk);
+ dev_err(&pdev->dev, "could not get clock\n");
+ return ret;
+ }
+ clk_prepare_enable(fsl_dev->clk);
+
+ dev_set_drvdata(dev->dev, fsl_dev);
+
+ fsl_dcu_fbdev_init(dev);
+
+ return 0;
+done:
+ if (ret)
+ fsl_dcu_unload(dev);
+
+ return ret;
+}
+
+static void fsl_dcu_drm_preclose(struct drm_device *dev, struct drm_file *file)
+{
+ ;
+}
+
+static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
+{
+ return IRQ_HANDLED;
+}
+
+static int fsl_dcu_drm_enable_vblank(struct drm_device *dev, int crtc)
+{
+ return 0;
+}
+
+static void fsl_dcu_drm_disable_vblank(struct drm_device *dev, int crtc)
+{
+ ;
+}
+
+static const struct file_operations fsl_dcu_drm_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = no_llseek,
+ .mmap = drm_gem_cma_mmap,
+};
+
+static struct drm_driver fsl_dcu_drm_driver = {
+ .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
+ | DRIVER_PRIME,
+ .load = fsl_dcu_load,
+ .unload = fsl_dcu_unload,
+ .preclose = fsl_dcu_drm_preclose,
+ .irq_handler = fsl_dcu_drm_irq,
+ .get_vblank_counter = drm_vblank_count,
+ .enable_vblank = fsl_dcu_drm_enable_vblank,
+ .disable_vblank = fsl_dcu_drm_disable_vblank,
+ .gem_free_object = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+ .dumb_create = drm_gem_cma_dumb_create,
+ .dumb_map_offset = drm_gem_cma_dumb_map_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+ .fops = &fsl_dcu_drm_fops,
+ .name = "fsl-dcu-drm",
+ .desc = "Freescale DCU DRM",
+ .date = "20150213",
+ .major = 1,
+ .minor = 0,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int fsl_dcu_drm_pm_suspend(struct device *dev)
+{
+ struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
+
+ dcu_pixclk_disable();
+ drm_kms_helper_poll_disable(fsl_dev->ddev);
+ fsl_dcu_drm_crtc_suspend(&fsl_dev->crtc);
+
+ return 0;
+}
+
+static int fsl_dcu_drm_pm_resume(struct device *dev)
+{
+ struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
+
+ drm_modeset_lock_all(fsl_dev->ddev);
+ fsl_dcu_drm_crtc_resume(&fsl_dev->crtc);
+ drm_modeset_unlock_all(fsl_dev->ddev);
+ drm_kms_helper_poll_enable(fsl_dev->ddev);
+ dcu_pixclk_enable();
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops fsl_dcu_drm_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(fsl_dcu_drm_pm_suspend, fsl_dcu_drm_pm_resume)
+};
+
+static int fsl_dcu_drm_probe(struct platform_device *pdev)
+{
+ return drm_platform_init(&fsl_dcu_drm_driver, pdev);
+}
+
+static int fsl_dcu_drm_remove(struct platform_device *pdev)
+{
+ struct fsl_dcu_drm_device *fsl_dev = platform_get_drvdata(pdev);
+
+ drm_put_dev(fsl_dev->ddev);
+
+ return 0;
+}
+
+static const struct of_device_id fsl_dcu_of_match[] = {
+ { .compatible = "fsl,dcu", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, fsl_dcu_of_match);
+
+static struct platform_driver fsl_dcu_drm_platform_driver = {
+ .probe = fsl_dcu_drm_probe,
+ .remove = fsl_dcu_drm_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "fsl,dcu",
+ .pm = &fsl_dcu_drm_pm_ops,
+ .of_match_table = fsl_dcu_of_match,
+ },
+};
+
+module_platform_driver(fsl_dcu_drm_platform_driver);
+
+MODULE_ALIAS("platform:fsl-dcu-drm");
+MODULE_DESCRIPTION("Freescale DCU DRM Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.h b/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.h
new file mode 100644
index 0000000..cbdfefc
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_drv.h
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_DRM_DRV_H__
+#define __FSL_DCU_DRM_DRV_H__
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <stddef.h>
+#include <drm/drm.h>
+#include <drm/drmP.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "fsl_dcu_drm_crtc.h"
+#include "fsl_dcu_drm_plane.h"
+#include "fsl_dcu_drm_connector.h"
+#define DRIVER_NAME "fsl-dcu-fb"
+
+#define DCU_DCU_MODE 0x0010
+#define DCU_MODE_BLEND_ITER(x) ((x) << 20)
+#define DCU_MODE_RASTER_EN BIT(14)
+#define DCU_MODE_DCU_MODE(x) (x)
+#define DCU_MODE_DCU_MODE_MASK 0x03
+#define DCU_MODE_OFF 0
+#define DCU_MODE_NORMAL 1
+#define DCU_MODE_TEST 2
+#define DCU_MODE_COLORBAR 3
+
+#define DCU_BGND 0x0014
+#define DCU_BGND_R(x) ((x) << 16)
+#define DCU_BGND_G(x) ((x) << 8)
+#define DCU_BGND_B(x) (x)
+
+#define DCU_DISP_SIZE 0x0018
+#define DCU_DISP_SIZE_DELTA_Y(x) ((x) << 16)
+/*Regisiter value 1/16 of horizontal resolution*/
+#define DCU_DISP_SIZE_DELTA_X(x) ((x) >> 4)
+
+#define DCU_HSYN_PARA 0x001c
+#define DCU_HSYN_PARA_BP(x) ((x) << 22)
+#define DCU_HSYN_PARA_PW(x) ((x) << 11)
+#define DCU_HSYN_PARA_FP(x) (x)
+
+#define DCU_VSYN_PARA 0x0020
+#define DCU_VSYN_PARA_BP(x) ((x) << 22)
+#define DCU_VSYN_PARA_PW(x) ((x) << 11)
+#define DCU_VSYN_PARA_FP(x) (x)
+
+#define DCU_SYN_POL 0x0024
+#define DCU_SYN_POL_INV_PXCK_FALL (0 << 6)
+#define DCU_SYN_POL_NEG_REMAIN (0 << 5)
+#define DCU_SYN_POL_INV_VS_LOW BIT(1)
+#define DCU_SYN_POL_INV_HS_LOW (1)
+
+#define DCU_THRESHOLD 0x0028
+#define DCU_THRESHOLD_LS_BF_VS(x) ((x) << 16)
+#define DCU_THRESHOLD_OUT_BUF_HIGH(x) ((x) << 8)
+#define DCU_THRESHOLD_OUT_BUF_LOW(x) (x)
+#define BF_VS_VAL 0x03
+#define BUF_MAX_VAL 0x78
+#define BUF_MIN_VAL 0x0a
+
+#define DCU_INT_STATUS 0x002C
+#define DCU_INT_STATUS_UNDRUN BIT(1)
+
+#define DCU_INT_MASK 0x0030
+#define DCU_INT_MASK_UNDRUN BIT(1)
+#define DCU_INT_MASK_VBLANK BIT(3)
+
+#define DCU_DIV_RATIO 0x0054
+
+#define DCU_UPDATE_MODE 0x00cc
+#define DCU_UPDATE_MODE_MODE BIT(31)
+#define DCU_UPDATE_MODE_READREG BIT(30)
+
+#define DCU_DCFB_MAX 0x300
+
+#define DCU_CTRLDESCLN_1(x) (0x200 + (x) * 0x40)
+#define DCU_CTRLDESCLN_1_HEIGHT(x) ((x) << 16)
+#define DCU_CTRLDESCLN_1_WIDTH(x) (x)
+
+#define DCU_CTRLDESCLN_2(x) (0x204 + (x) * 0x40)
+#define DCU_CTRLDESCLN_2_POSY(x) ((x) << 16)
+#define DCU_CTRLDESCLN_2_POSX(x) (x)
+
+#define DCU_CTRLDESCLN_3(x) (0x208 + (x) * 0x40)
+
+#define DCU_CTRLDESCLN_4(x) (0x20c + (x) * 0x40)
+#define DCU_CTRLDESCLN_4_EN BIT(31)
+#define DCU_CTRLDESCLN_4_TILE_EN BIT(30)
+#define DCU_CTRLDESCLN_4_DATA_SEL_CLUT BIT(29)
+#define DCU_CTRLDESCLN_4_SAFETY_EN BIT(28)
+#define DCU_CTRLDESCLN_4_TRANS(x) ((x) << 20)
+#define DCU_CTRLDESCLN_4_BPP(x) ((x) << 16)
+#define DCU_CTRLDESCLN_4_RLE_EN BIT(15)
+#define DCU_CTRLDESCLN_4_LUOFFS(x) ((x) << 4)
+#define DCU_CTRLDESCLN_4_BB_ON BIT(2)
+#define DCU_CTRLDESCLN_4_AB(x) (x)
+
+#define DCU_CTRLDESCLN_5(x) (0x210 + (x) * 0x40)
+#define DCU_CTRLDESCLN_5_CKMAX_R(x) ((x) << 16)
+#define DCU_CTRLDESCLN_5_CKMAX_G(x) ((x) << 8)
+#define DCU_CTRLDESCLN_5_CKMAX_B(x) (x)
+
+#define DCU_CTRLDESCLN_6(x) (0x214 + (x) * 0x40)
+#define DCU_CTRLDESCLN_6_CKMIN_R(x) ((x) << 16)
+#define DCU_CTRLDESCLN_6_CKMIN_G(x) ((x) << 8)
+#define DCU_CTRLDESCLN_6_CKMIN_B(x) (x)
+
+#define DCU_CTRLDESCLN_7(x) (0x218 + (x) * 0x40)
+#define DCU_CTRLDESCLN_7_TILE_VER(x) ((x) << 16)
+#define DCU_CTRLDESCLN_7_TILE_HOR(x) (x)
+
+#define DCU_CTRLDESCLN_8(x) (0x21c + (x) * 0x40)
+#define DCU_CTRLDESCLN_8_FG_FCOLOR(x) (x)
+
+#define DCU_CTRLDESCLN_9(x) (0x220 + (x) * 0x40)
+#define DCU_CTRLDESCLN_9_BG_BCOLOR(x) (x)
+
+#define DCU_CTRLDESCLN_10(x) (0x224 + (x) * 0x40)
+#define DCU_CTRLDESCLN_10_POST_SKIP(x) ((x) << 16)
+#define DCU_CTRLDESCLN_10_PRE_SKIP(x) (x)
+
+#define FSL_DCU_RGB565 4
+#define FSL_DCU_RGB888 5
+#define FSL_DCU_ARGB8888 6
+#define FSL_DCU_ARGB1555 11
+#define FSL_DCU_ARGB4444 12
+#define FSL_DCU_YUV422 14
+
+#define TCON_CTRL1 0x0000
+#define TCON_BYPASS_ENABLE BIT(29)
+
+#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
+
+struct clk;
+struct device;
+struct drm_device;
+
+struct fsl_dcu_drm_device {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap *tcon_regmap;
+ unsigned int irq;
+ struct clk *clk;
+ /*protects hardware register*/
+ spinlock_t irq_lock;
+ struct drm_device *ddev;
+ struct drm_fbdev_cma *fbdev;
+ struct fsl_dcu_drm_crtc crtc;
+ struct drm_encoder encoder;
+ struct fsl_dcu_drm_connector connector;
+};
+
+void fsl_dcu_fbdev_init(struct drm_device *dev);
+
+#endif /* __FSL_DCU_DRM_DRV_H__ */
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_fbdev.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_fbdev.c
new file mode 100644
index 0000000..f8ef0e1
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_fbdev.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "fsl_dcu_drm_drv.h"
+
+/* initialize fbdev helper */
+void fsl_dcu_fbdev_init(struct drm_device *dev)
+{
+ struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev->dev);
+
+ fsl_dev->fbdev = drm_fbdev_cma_init(dev, 24, 1, 1);
+}
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.c
new file mode 100644
index 0000000..4a840fb
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+
+#include "fsl_dcu_drm_crtc.h"
+#include "fsl_dcu_drm_connector.h"
+#include "fsl_dcu_drm_drv.h"
+
+static const struct drm_mode_config_funcs fsl_dcu_drm_mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev)
+{
+ drm_mode_config_init(fsl_dev->ddev);
+
+ fsl_dev->ddev->mode_config.min_width = 0;
+ fsl_dev->ddev->mode_config.min_height = 0;
+ fsl_dev->ddev->mode_config.max_width = 2031;
+ fsl_dev->ddev->mode_config.max_height = 2047;
+ fsl_dev->ddev->mode_config.funcs = &fsl_dcu_drm_mode_config_funcs;
+
+ drm_kms_helper_poll_init(fsl_dev->ddev);
+ fsl_dcu_drm_crtc_create(fsl_dev);
+ fsl_dcu_drm_encoder_create(fsl_dev);
+ fsl_dcu_drm_connector_create(fsl_dev, &fsl_dev->encoder);
+ drm_mode_config_reset(fsl_dev->ddev);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.h b/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.h
new file mode 100644
index 0000000..b9bd299
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_kms.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_DRM_KMS_H__
+#define __FSL_DCU_DRM_KMS_H__
+
+int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev);
+
+#endif /* __FSL_DCU_DRM_KMS_H__ */
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.c b/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.c
new file mode 100644
index 0000000..b7b4405
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <linux/regmap.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_atomic_helper.h>
+
+#include "fsl_dcu_drm_drv.h"
+#include "fsl_dcu_drm_kms.h"
+#include "fsl_dcu_drm_plane.h"
+
+#define to_fsl_dcu_plane(plane) \
+ container_of(plane, struct fsl_dcu_drm_plane, plane)
+
+static int
+fsl_dcu_drm_plane_prepare_fb(struct drm_plane *plane,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *new_state)
+{
+ return 0;
+}
+
+static void
+fsl_dcu_drm_plane_cleanup_fb(struct drm_plane *plane,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *new_state)
+{
+}
+
+static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return 0;
+}
+
+static void fsl_dcu_drm_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+}
+
+void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = plane->state->fb;
+ u32 index, alpha, bpp;
+ struct drm_gem_cma_object *gem;
+ struct fsl_dcu_drm_plane *fsl_plane = to_fsl_dcu_plane(plane);
+
+ index = fsl_plane->index;
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_RGB565:
+ bpp = FSL_DCU_RGB565;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_RGB888:
+ bpp = FSL_DCU_RGB888;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ bpp = FSL_DCU_ARGB8888;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_BGRA4444:
+ bpp = FSL_DCU_ARGB4444;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_ARGB1555:
+ bpp = FSL_DCU_ARGB1555;
+ alpha = 0xff;
+ break;
+ case DRM_FORMAT_YUV422:
+ bpp = FSL_DCU_YUV422;
+ alpha = 0xff;
+ break;
+ default:
+ return;
+ }
+
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_1(index),
+ DCU_CTRLDESCLN_1_HEIGHT(state->crtc_h) |
+ DCU_CTRLDESCLN_1_WIDTH(state->crtc_w));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_2(index),
+ DCU_CTRLDESCLN_2_POSY(state->crtc_y) |
+ DCU_CTRLDESCLN_2_POSX(state->crtc_x));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_3(index), gem->paddr);
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_4(index),
+ DCU_CTRLDESCLN_4_EN |
+ DCU_CTRLDESCLN_4_TRANS(alpha) |
+ DCU_CTRLDESCLN_4_BPP(bpp) |
+ DCU_CTRLDESCLN_4_AB(2));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_5(index),
+ DCU_CTRLDESCLN_5_CKMAX_R(0xFF) |
+ DCU_CTRLDESCLN_5_CKMAX_G(0xFF) |
+ DCU_CTRLDESCLN_5_CKMAX_B(0xFF));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_6(index),
+ DCU_CTRLDESCLN_6_CKMIN_R(0) |
+ DCU_CTRLDESCLN_6_CKMIN_G(0) |
+ DCU_CTRLDESCLN_6_CKMIN_B(0));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_8(index),
+ DCU_CTRLDESCLN_8_FG_FCOLOR(0));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_9(index),
+ DCU_CTRLDESCLN_9_BG_BCOLOR(0));
+ regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN_10(index),
+ DCU_CTRLDESCLN_10_POST_SKIP(0) |
+ DCU_CTRLDESCLN_10_PRE_SKIP(0));
+ regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
+}
+
+int fsl_dcu_drm_plane_disable(struct drm_plane *plane)
+{
+ return 0;
+}
+
+void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
+{
+ fsl_dcu_drm_plane_disable(plane);
+ drm_plane_cleanup(plane);
+}
+
+static const uint32_t fsl_dcu_drm_plane_formats[] = {
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_ARGB4444,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_YUV422,
+};
+
+static const struct drm_plane_funcs fsl_dcu_drm_plane_funcs = {
+ .update_plane = drm_plane_helper_update,
+ .disable_plane = drm_plane_helper_disable,
+ .destroy = fsl_dcu_drm_plane_destroy,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .reset = drm_atomic_helper_plane_reset,
+};
+
+static const struct drm_plane_helper_funcs fsl_dcu_drm_plane_helper_funcs = {
+ .prepare_fb = fsl_dcu_drm_plane_prepare_fb,
+ .cleanup_fb = fsl_dcu_drm_plane_cleanup_fb,
+ .atomic_check = fsl_dcu_drm_plane_atomic_check,
+ .atomic_update = fsl_dcu_drm_plane_atomic_update,
+ .atomic_disable = fsl_dcu_drm_plane_atomic_disable,
+};
+
+struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
+{
+ struct drm_plane *primary;
+ int ret;
+
+ primary = kzalloc(sizeof(*primary), GFP_KERNEL);
+ if (!primary) {
+ DRM_DEBUG_KMS("Failed to allocate primary plane\n");
+ return NULL;
+ }
+
+ /* possible_crtc's will be filled in later by crtc_init */
+ ret = drm_universal_plane_init(dev, primary, 0,
+ &fsl_dcu_drm_plane_funcs,
+ fsl_dcu_drm_plane_formats,
+ ARRAY_SIZE(fsl_dcu_drm_plane_formats),
+ DRM_PLANE_TYPE_PRIMARY);
+ if (ret) {
+ kfree(primary);
+ primary = NULL;
+ }
+ drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs);
+
+ return primary;
+}
diff --git a/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.h b/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.h
new file mode 100644
index 0000000..ccbfa61
--- /dev/null
+++ b/drivers/gpu/drm/fsl/fsl_dcu_drm_plane.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_DRM_PLANE_H__
+#define __FSL_DCU_DRM_PLANE_H__
+
+struct fsl_dcu_drm_device;
+struct fsl_dcu_drm_plane {
+ struct drm_plane plane;
+ unsigned int index;
+};
+
+struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev);
+
+#endif /* __FSL_DCU_DRM_PLANE_H__ */
diff --git a/include/linux/fsl/dcu.h b/include/linux/fsl/dcu.h
new file mode 100644
index 0000000..1873057
--- /dev/null
+++ b/include/linux/fsl/dcu.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * Freescale DCU drm device driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __FSL_DCU_H__
+#define __FSL_DCU_H__
+
+#define SCFG_PIXCLKCR 0x28
+#define PXCK_ENABLE BIT(31)
+#define PXCK_DISABLE 0
+
+void dcu_pixclk_enable(void);
+void dcu_pixclk_disable(void);
+
+#endif /* __FSL_DCU_H__ */
--
2.1.0.27.g96db324
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