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imx-drm: remove separate imx-fbdev 

Now that we know when the components of the imx-drm subsystem will be
initialised, we can move the fbdev helper initialisation and teardown
into imx-drm-core.  This gives us the required ordering that DRM wants
in both driver load and unload methods.

We can also stop exporting the imx_drm_device_get() and
imx_drm_device_put() methods; nothing but the fbdev helper was making
use of these.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2013-11-03 12:13:47 +00:00
parent e355e7dd60
commit 8acba02f7e
4 changed files with 31 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/staging/imx-drm/Makefile
View File

@ -6,7 +6,6 @@ obj-$(CONFIG_DRM_IMX) += imxdrm.o
obj-$(CONFIG_DRM_IMX_PARALLEL_DISPLAY) += parallel-display.o
obj-$(CONFIG_DRM_IMX_TVE) += imx-tve.o
obj-$(CONFIG_DRM_IMX_LDB) += imx-ldb.o
obj-$(CONFIG_DRM_IMX_FB_HELPER) += imx-fbdev.o
obj-$(CONFIG_DRM_IMX_IPUV3_CORE) += ipu-v3/
imx-ipuv3-crtc-objs := ipuv3-crtc.o ipuv3-plane.o

43
drivers/staging/imx-drm/imx-drm-core.c
View File

@ -70,6 +70,10 @@ struct imx_drm_connector {
struct module *owner;
};
static int legacyfb_depth = 16;
module_param(legacyfb_depth, int, 0444);
static void imx_drm_device_put(void);
static struct imx_drm_device *__imx_drm_device(void);
int imx_drm_crtc_id(struct imx_drm_crtc *crtc)
@ -80,16 +84,23 @@ EXPORT_SYMBOL_GPL(imx_drm_crtc_id);
static void imx_drm_driver_lastclose(struct drm_device *drm)
{
#if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER)
struct imx_drm_device *imxdrm = drm->dev_private;
if (imxdrm->fbhelper)
drm_fbdev_cma_restore_mode(imxdrm->fbhelper);
#endif
}
static int imx_drm_driver_unload(struct drm_device *drm)
{
#if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER)
struct imx_drm_device *imxdrm = drm->dev_private;
if (imxdrm->fbhelper)
drm_fbdev_cma_fini(imxdrm->fbhelper);
#endif
component_unbind_all(drm->dev, drm);
imx_drm_device_put();
@ -225,7 +236,7 @@ static struct imx_drm_device *__imx_drm_device(void)
return imx_drm_device;
}
struct drm_device *imx_drm_device_get(void)
static struct drm_device *imx_drm_device_get(void)
{
struct imx_drm_device *imxdrm = __imx_drm_device();
struct imx_drm_encoder *enc;
@ -273,9 +284,8 @@ unwind_enc:
return NULL;
}
EXPORT_SYMBOL_GPL(imx_drm_device_get);
void imx_drm_device_put(void)
static void imx_drm_device_put(void)
{
struct imx_drm_device *imxdrm = __imx_drm_device();
struct imx_drm_encoder *enc;
@ -295,7 +305,6 @@ void imx_drm_device_put(void)
mutex_unlock(&imxdrm->mutex);
}
EXPORT_SYMBOL_GPL(imx_drm_device_put);
static int drm_mode_group_reinit(struct drm_device *dev)
{
@ -450,6 +459,24 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
}
}
/*
* All components are now initialised, so setup the fb helper.
* The fb helper takes copies of key hardware information, so the
* crtcs/connectors/encoders must not change after this point.
*/
#if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER)
if (legacyfb_depth != 16 && legacyfb_depth != 32) {
dev_warn(drm->dev, "Invalid legacyfb_depth. Defaulting to 16bpp\n");
legacyfb_depth = 16;
}
imxdrm->fbhelper = drm_fbdev_cma_init(drm, legacyfb_depth,
drm->mode_config.num_crtc, MAX_CRTC);
if (IS_ERR(imxdrm->fbhelper)) {
ret = PTR_ERR(imxdrm->fbhelper);
imxdrm->fbhelper = NULL;
goto err_unbind;
}
#endif
return 0;
err_unbind:
@ -767,14 +794,6 @@ err_busy:
}
EXPORT_SYMBOL_GPL(imx_drm_add_connector);
void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper)
{
struct imx_drm_device *imxdrm = __imx_drm_device();
imxdrm->fbhelper = fbdev_helper;
}
EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set);
/*
* imx_drm_remove_connector - remove a connector
*/

3
drivers/staging/imx-drm/imx-drm.h
View File

@ -54,13 +54,10 @@ void imx_drm_mode_config_init(struct drm_device *drm);
struct drm_gem_cma_object *imx_drm_fb_get_obj(struct drm_framebuffer *fb);
struct drm_device *imx_drm_device_get(void);
void imx_drm_device_put(void);
int imx_drm_panel_format_pins(struct drm_encoder *encoder,
u32 interface_pix_fmt, int hsync_pin, int vsync_pin);
int imx_drm_panel_format(struct drm_encoder *encoder,
u32 interface_pix_fmt);
void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper);
struct device_node;

74
drivers/staging/imx-drm/imx-fbdev.c
View File

@ -1,74 +0,0 @@
/*
* i.MX drm driver
*
* Copyright (C) 2012 Sascha Hauer, Pengutronix
*
* Based on Samsung Exynos code
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
*
* 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.
* 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 <linux/module.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include "imx-drm.h"
#define MAX_CONNECTOR 4
#define PREFERRED_BPP 16
static struct drm_fbdev_cma *fbdev_cma;
static int legacyfb_depth = 16;
module_param(legacyfb_depth, int, 0444);
static int __init imx_fb_helper_init(void)
{
struct drm_device *drm = imx_drm_device_get();
if (!drm)
return -EINVAL;
if (legacyfb_depth != 16 && legacyfb_depth != 32) {
pr_warn("i.MX legacyfb: invalid legacyfb_depth setting. defaulting to 16bpp\n");
legacyfb_depth = 16;
}
fbdev_cma = drm_fbdev_cma_init(drm, legacyfb_depth,
drm->mode_config.num_crtc, MAX_CONNECTOR);
if (IS_ERR(fbdev_cma)) {
imx_drm_device_put();
return PTR_ERR(fbdev_cma);
}
imx_drm_fb_helper_set(fbdev_cma);
return 0;
}
static void __exit imx_fb_helper_exit(void)
{
imx_drm_fb_helper_set(NULL);
drm_fbdev_cma_fini(fbdev_cma);
imx_drm_device_put();
}
late_initcall(imx_fb_helper_init);
module_exit(imx_fb_helper_exit);
MODULE_DESCRIPTION("Freescale i.MX legacy fb driver");
MODULE_AUTHOR("Sascha Hauer, Pengutronix");
MODULE_LICENSE("GPL");