Re: [PATCH 1/3] drm/layerscape: Add fsl dcu DRM driver
From: Daniel Vetter
Date: Thu Mar 19 2015 - 10:29:22 EST
On Fri, Mar 13, 2015 at 05:44:17PM +0800, Jianwei Wang wrote:
> 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@xxxxxxxxxxxxx>
> Signed-off-by: Xiubo Li <lixiubo@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jianwei Wang <b52261@xxxxxxxxxxxxx>
I've spotted two more places where you need to upgrade to atomic functions
for legacy entry points. Otherwise it looks good from that pov. See
comments below.
Thanks, Daniel
> ---
>
> 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,
This is the legacy function, please use the atomic one instead from
drm_atomic_helper.c for ->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,
These are the transitional helpers used for converting drivers, please
switch to the atomic helpers in drm_atomic_helper.c.
> + .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
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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