From 0b2443ed4e07d7973e4554a2cc166bc35447b59e Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Thu, 9 Aug 2012 11:25:51 -0400 Subject: [PATCH 1/5] drm/edid: limit printk when facing bad edid Limit printing bad edid information at one time per connector. Connector that are connected to a bad monitor/kvm will likely stay connected to the same bad monitor/kvm and it makes no sense to keep printing the bad edid message. Signed-off-by: Jerome Glisse Reviewed-by: Adam Jackson Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_edid.c | 22 ++++++++++++++-------- drivers/gpu/drm/drm_edid_load.c | 6 ++++-- include/drm/drm_crtc.h | 3 ++- 3 files changed, 20 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index acb489ff3630..de2a0ed8e945 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -158,7 +158,7 @@ MODULE_PARM_DESC(edid_fixup, * Sanity check the EDID block (base or extension). Return 0 if the block * doesn't check out, or 1 if it's valid. */ -bool drm_edid_block_valid(u8 *raw_edid, int block) +bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid) { int i; u8 csum = 0; @@ -181,7 +181,9 @@ bool drm_edid_block_valid(u8 *raw_edid, int block) for (i = 0; i < EDID_LENGTH; i++) csum += raw_edid[i]; if (csum) { - DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); + if (print_bad_edid) { + DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); + } /* allow CEA to slide through, switches mangle this */ if (raw_edid[0] != 0x02) @@ -207,7 +209,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block) return 1; bad: - if (raw_edid) { + if (raw_edid && print_bad_edid) { printk(KERN_ERR "Raw EDID:\n"); print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1, raw_edid, EDID_LENGTH, false); @@ -231,7 +233,7 @@ bool drm_edid_is_valid(struct edid *edid) return false; for (i = 0; i <= edid->extensions; i++) - if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i)) + if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true)) return false; return true; @@ -316,6 +318,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) { int i, j = 0, valid_extensions = 0; u8 *block, *new; + bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS); if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) return NULL; @@ -324,7 +327,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) for (i = 0; i < 4; i++) { if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH)) goto out; - if (drm_edid_block_valid(block, 0)) + if (drm_edid_block_valid(block, 0, print_bad_edid)) break; if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) { connector->null_edid_counter++; @@ -349,7 +352,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) block + (valid_extensions + 1) * EDID_LENGTH, j, EDID_LENGTH)) goto out; - if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j)) { + if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) { valid_extensions++; break; } @@ -372,8 +375,11 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) return block; carp: - dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n", - drm_get_connector_name(connector), j); + if (print_bad_edid) { + dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n", + drm_get_connector_name(connector), j); + } + connector->bad_edid_counter++; out: kfree(block); diff --git a/drivers/gpu/drm/drm_edid_load.c b/drivers/gpu/drm/drm_edid_load.c index 186832e1874e..ea9cdab3d431 100644 --- a/drivers/gpu/drm/drm_edid_load.c +++ b/drivers/gpu/drm/drm_edid_load.c @@ -123,6 +123,7 @@ static u8 *edid_load(struct drm_connector *connector, char *name, int fwsize, expected; int builtin = 0, err = 0; int i, valid_extensions = 0; + bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS); pdev = platform_device_register_simple(connector_name, -1, NULL, 0); if (IS_ERR(pdev)) { @@ -173,7 +174,8 @@ static u8 *edid_load(struct drm_connector *connector, char *name, } memcpy(edid, fwdata, fwsize); - if (!drm_edid_block_valid(edid, 0)) { + if (!drm_edid_block_valid(edid, 0, print_bad_edid)) { + connector->bad_edid_counter++; DRM_ERROR("Base block of EDID firmware \"%s\" is invalid ", name); kfree(edid); @@ -185,7 +187,7 @@ static u8 *edid_load(struct drm_connector *connector, char *name, if (i != valid_extensions + 1) memcpy(edid + (valid_extensions + 1) * EDID_LENGTH, edid + i * EDID_LENGTH, EDID_LENGTH); - if (drm_edid_block_valid(edid + i * EDID_LENGTH, i)) + if (drm_edid_block_valid(edid + i * EDID_LENGTH, i, print_bad_edid)) valid_extensions++; } diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 617d87ae2b1a..316ce64e5590 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -590,6 +590,7 @@ struct drm_connector { int video_latency[2]; /* [0]: progressive, [1]: interlaced */ int audio_latency[2]; int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ + unsigned bad_edid_counter; }; /** @@ -1032,7 +1033,7 @@ extern int drm_add_modes_noedid(struct drm_connector *connector, int hdisplay, int vdisplay); extern int drm_edid_header_is_valid(const u8 *raw_edid); -extern bool drm_edid_block_valid(u8 *raw_edid, int block); +extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid); extern bool drm_edid_is_valid(struct edid *edid); struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, int hsize, int vsize, int fresh, From b9d474500546160dd6af35f60cd8bc20edd13807 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 27 Jun 2012 15:30:18 +0200 Subject: [PATCH 2/5] DRM: Add DRM GEM CMA helper Many embedded drm devices do not have a IOMMU and no dedicated memory for graphics. These devices use CMA (Contiguous Memory Allocator) backed graphics memory. This patch provides helper functions to be able to share the code. The code technically does not depend on CMA as the backend allocator, the name has been chosen because CMA makes for a nice, short but still descriptive function prefix. Signed-off-by: Sascha Hauer Tested-by: Lars-Peter Clausen [Make DRM_GEM_CMA_HELPER a boolean Kconfig option] Signed-off-by: Laurent Pinchart --- drivers/gpu/drm/Kconfig | 6 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_gem_cma_helper.c | 251 +++++++++++++++++++++++++++ include/drm/drm_gem_cma_helper.h | 44 +++++ 4 files changed, 302 insertions(+) create mode 100644 drivers/gpu/drm/drm_gem_cma_helper.c create mode 100644 include/drm/drm_gem_cma_helper.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 0cbdc458011f..2df146dd0c85 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -54,6 +54,12 @@ config DRM_TTM GPU memory types. Will be enabled automatically if a device driver uses it. +config DRM_GEM_CMA_HELPER + bool + depends on DRM + help + Choose this if you need the GEM CMA helper functions + config DRM_TDFX tristate "3dfx Banshee/Voodoo3+" depends on DRM && PCI diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index f65f65ed0ddf..2fcedbb7d638 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -15,6 +15,7 @@ drm-y := drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \ drm_trace_points.o drm_global.o drm_prime.o drm-$(CONFIG_COMPAT) += drm_ioc32.o +drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o drm-usb-y := drm_usb.o diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c new file mode 100644 index 000000000000..1aa8fee1e865 --- /dev/null +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -0,0 +1,251 @@ +/* + * drm gem CMA (contiguous memory allocator) helper functions + * + * 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 +#include +#include +#include +#include + +#include +#include +#include + +static unsigned int get_gem_mmap_offset(struct drm_gem_object *obj) +{ + return (unsigned int)obj->map_list.hash.key << PAGE_SHIFT; +} + +static void drm_gem_cma_buf_destroy(struct drm_device *drm, + struct drm_gem_cma_object *cma_obj) +{ + dma_free_writecombine(drm->dev, cma_obj->base.size, cma_obj->vaddr, + cma_obj->paddr); +} + +/* + * drm_gem_cma_create - allocate an object with the given size + * + * returns a struct drm_gem_cma_object* on success or ERR_PTR values + * on failure. + */ +struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, + unsigned int size) +{ + struct drm_gem_cma_object *cma_obj; + struct drm_gem_object *gem_obj; + int ret; + + size = round_up(size, PAGE_SIZE); + + cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL); + if (!cma_obj) + return ERR_PTR(-ENOMEM); + + cma_obj->vaddr = dma_alloc_writecombine(drm->dev, size, + &cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN); + if (!cma_obj->vaddr) { + dev_err(drm->dev, "failed to allocate buffer with size %d\n", size); + ret = -ENOMEM; + goto err_dma_alloc; + } + + gem_obj = &cma_obj->base; + + ret = drm_gem_object_init(drm, gem_obj, size); + if (ret) + goto err_obj_init; + + ret = drm_gem_create_mmap_offset(gem_obj); + if (ret) + goto err_create_mmap_offset; + + return cma_obj; + +err_create_mmap_offset: + drm_gem_object_release(gem_obj); + +err_obj_init: + drm_gem_cma_buf_destroy(drm, cma_obj); + +err_dma_alloc: + kfree(cma_obj); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_create); + +/* + * drm_gem_cma_create_with_handle - allocate an object with the given + * size and create a gem handle on it + * + * returns a struct drm_gem_cma_object* on success or ERR_PTR values + * on failure. + */ +static struct drm_gem_cma_object *drm_gem_cma_create_with_handle( + struct drm_file *file_priv, + struct drm_device *drm, unsigned int size, + unsigned int *handle) +{ + struct drm_gem_cma_object *cma_obj; + struct drm_gem_object *gem_obj; + int ret; + + cma_obj = drm_gem_cma_create(drm, size); + if (IS_ERR(cma_obj)) + return cma_obj; + + gem_obj = &cma_obj->base; + + /* + * allocate a id of idr table where the obj is registered + * and handle has the id what user can see. + */ + ret = drm_gem_handle_create(file_priv, gem_obj, handle); + if (ret) + goto err_handle_create; + + /* drop reference from allocate - handle holds it now. */ + drm_gem_object_unreference_unlocked(gem_obj); + + return cma_obj; + +err_handle_create: + drm_gem_cma_free_object(gem_obj); + + return ERR_PTR(ret); +} + +/* + * drm_gem_cma_free_object - (struct drm_driver)->gem_free_object callback + * function + */ +void drm_gem_cma_free_object(struct drm_gem_object *gem_obj) +{ + struct drm_gem_cma_object *cma_obj; + + if (gem_obj->map_list.map) + drm_gem_free_mmap_offset(gem_obj); + + drm_gem_object_release(gem_obj); + + cma_obj = to_drm_gem_cma_obj(gem_obj); + + drm_gem_cma_buf_destroy(gem_obj->dev, cma_obj); + + kfree(cma_obj); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_free_object); + +/* + * drm_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback + * function + * + * This aligns the pitch and size arguments to the minimum required. wrap + * this into your own function if you need bigger alignment. + */ +int drm_gem_cma_dumb_create(struct drm_file *file_priv, + struct drm_device *dev, struct drm_mode_create_dumb *args) +{ + struct drm_gem_cma_object *cma_obj; + int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + + if (args->pitch < min_pitch) + args->pitch = min_pitch; + + if (args->size < args->pitch * args->height) + args->size = args->pitch * args->height; + + cma_obj = drm_gem_cma_create_with_handle(file_priv, dev, + args->size, &args->handle); + if (IS_ERR(cma_obj)) + return PTR_ERR(cma_obj); + + return 0; +} +EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create); + +/* + * drm_gem_cma_dumb_map_offset - (struct drm_driver)->dumb_map_offset callback + * function + */ +int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv, + struct drm_device *drm, uint32_t handle, uint64_t *offset) +{ + struct drm_gem_object *gem_obj; + + mutex_lock(&drm->struct_mutex); + + gem_obj = drm_gem_object_lookup(drm, file_priv, handle); + if (!gem_obj) { + dev_err(drm->dev, "failed to lookup gem object\n"); + mutex_unlock(&drm->struct_mutex); + return -EINVAL; + } + + *offset = get_gem_mmap_offset(gem_obj); + + drm_gem_object_unreference(gem_obj); + + mutex_unlock(&drm->struct_mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_map_offset); + +const struct vm_operations_struct drm_gem_cma_vm_ops = { + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; +EXPORT_SYMBOL_GPL(drm_gem_cma_vm_ops); + +/* + * drm_gem_cma_mmap - (struct file_operation)->mmap callback function + */ +int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_gem_object *gem_obj; + struct drm_gem_cma_object *cma_obj; + int ret; + + ret = drm_gem_mmap(filp, vma); + if (ret) + return ret; + + gem_obj = vma->vm_private_data; + cma_obj = to_drm_gem_cma_obj(gem_obj); + + ret = remap_pfn_range(vma, vma->vm_start, cma_obj->paddr >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, vma->vm_page_prot); + if (ret) + drm_gem_vm_close(vma); + + return ret; +} +EXPORT_SYMBOL_GPL(drm_gem_cma_mmap); + +/* + * drm_gem_cma_dumb_destroy - (struct drm_driver)->dumb_destroy callback function + */ +int drm_gem_cma_dumb_destroy(struct drm_file *file_priv, + struct drm_device *drm, unsigned int handle) +{ + return drm_gem_handle_delete(file_priv, handle); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_destroy); diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h new file mode 100644 index 000000000000..f0f6b1af25ad --- /dev/null +++ b/include/drm/drm_gem_cma_helper.h @@ -0,0 +1,44 @@ +#ifndef __DRM_GEM_CMA_HELPER_H__ +#define __DRM_GEM_CMA_HELPER_H__ + +struct drm_gem_cma_object { + struct drm_gem_object base; + dma_addr_t paddr; + void *vaddr; +}; + +static inline struct drm_gem_cma_object * +to_drm_gem_cma_obj(struct drm_gem_object *gem_obj) +{ + return container_of(gem_obj, struct drm_gem_cma_object, base); +} + +/* free gem object. */ +void drm_gem_cma_free_object(struct drm_gem_object *gem_obj); + +/* create memory region for drm framebuffer. */ +int drm_gem_cma_dumb_create(struct drm_file *file_priv, + struct drm_device *drm, struct drm_mode_create_dumb *args); + +/* map memory region for drm framebuffer to user space. */ +int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv, + struct drm_device *drm, uint32_t handle, uint64_t *offset); + +/* set vm_flags and we can change the vm attribute to other one at here. */ +int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); + +/* + * destroy memory region allocated. + * - a gem handle and physical memory region pointed by a gem object + * would be released by drm_gem_handle_delete(). + */ +int drm_gem_cma_dumb_destroy(struct drm_file *file_priv, + struct drm_device *drm, unsigned int handle); + +/* allocate physical memory. */ +struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, + unsigned int size); + +extern const struct vm_operations_struct drm_gem_cma_vm_ops; + +#endif /* __DRM_GEM_CMA_HELPER_H__ */ From 2e3b3c42f06ff6801b3d7839757bbdb231619083 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 2 Jul 2012 16:37:47 +0200 Subject: [PATCH 3/5] DRM: Add DRM KMS/FB CMA helper This patchset introduces a set of helper function for implementing the KMS framebuffer layer for drivers which use the DRM GEM CMA helper function. Signed-off-by: Lars-Peter Clausen Tested-by: Sascha Hauer Acked-by: Sascha Hauer [Make DRM_KMS_CMA_HELPER a boolean Kconfig option] Signed-off-by: Laurent Pinchart --- drivers/gpu/drm/Kconfig | 9 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_fb_cma_helper.c | 406 ++++++++++++++++++++++++++++ include/drm/drm_fb_cma_helper.h | 27 ++ 4 files changed, 443 insertions(+) create mode 100644 drivers/gpu/drm/drm_fb_cma_helper.c create mode 100644 include/drm/drm_fb_cma_helper.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 2df146dd0c85..7da5f0887cad 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -60,6 +60,15 @@ config DRM_GEM_CMA_HELPER help Choose this if you need the GEM CMA helper functions +config DRM_KMS_CMA_HELPER + bool + select DRM_GEM_CMA_HELPER + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + help + Choose this if you need the KMS CMA helper functions + config DRM_TDFX tristate "3dfx Banshee/Voodoo3+" depends on DRM && PCI diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 2fcedbb7d638..58961b923091 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -21,6 +21,7 @@ drm-usb-y := drm_usb.o drm_kms_helper-y := drm_fb_helper.o drm_crtc_helper.o drm_dp_i2c_helper.o drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o +drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) += drm_fb_cma_helper.o obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c new file mode 100644 index 000000000000..09e11a5d921a --- /dev/null +++ b/drivers/gpu/drm/drm_fb_cma_helper.c @@ -0,0 +1,406 @@ +/* + * drm kms/fb cma (contiguous memory allocator) helper functions + * + * Copyright (C) 2012 Analog Device Inc. + * Author: Lars-Peter Clausen + * + * Based on udl_fbdev.c + * Copyright (C) 2012 Red Hat + * + * 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 +#include +#include +#include +#include +#include +#include + +struct drm_fb_cma { + struct drm_framebuffer fb; + struct drm_gem_cma_object *obj[4]; +}; + +struct drm_fbdev_cma { + struct drm_fb_helper fb_helper; + struct drm_fb_cma *fb; +}; + +static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper) +{ + return container_of(helper, struct drm_fbdev_cma, fb_helper); +} + +static inline struct drm_fb_cma *to_fb_cma(struct drm_framebuffer *fb) +{ + return container_of(fb, struct drm_fb_cma, fb); +} + +static void drm_fb_cma_destroy(struct drm_framebuffer *fb) +{ + struct drm_fb_cma *fb_cma = to_fb_cma(fb); + int i; + + for (i = 0; i < 4; i++) { + if (fb_cma->obj[i]) + drm_gem_object_unreference_unlocked(&fb_cma->obj[i]->base); + } + + drm_framebuffer_cleanup(fb); + kfree(fb_cma); +} + +static int drm_fb_cma_create_handle(struct drm_framebuffer *fb, + struct drm_file *file_priv, unsigned int *handle) +{ + struct drm_fb_cma *fb_cma = to_fb_cma(fb); + + return drm_gem_handle_create(file_priv, + &fb_cma->obj[0]->base, handle); +} + +static struct drm_framebuffer_funcs drm_fb_cma_funcs = { + .destroy = drm_fb_cma_destroy, + .create_handle = drm_fb_cma_create_handle, +}; + +static struct drm_fb_cma *drm_fb_cma_alloc(struct drm_device *dev, + struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_cma_object **obj, + unsigned int num_planes) +{ + struct drm_fb_cma *fb_cma; + int ret; + int i; + + fb_cma = kzalloc(sizeof(*fb_cma), GFP_KERNEL); + if (!fb_cma) + return ERR_PTR(-ENOMEM); + + ret = drm_framebuffer_init(dev, &fb_cma->fb, &drm_fb_cma_funcs); + if (ret) { + dev_err(dev->dev, "Failed to initalize framebuffer: %d\n", ret); + kfree(fb_cma); + return ERR_PTR(ret); + } + + drm_helper_mode_fill_fb_struct(&fb_cma->fb, mode_cmd); + + for (i = 0; i < num_planes; i++) + fb_cma->obj[i] = obj[i]; + + return fb_cma; +} + +/** + * drm_fb_cma_create() - (struct drm_mode_config_funcs *)->fb_create callback function + * + * If your hardware has special alignment or pitch requirements these should be + * checked before calling this function. + */ +struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev, + struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_fb_cma *fb_cma; + struct drm_gem_cma_object *objs[4]; + struct drm_gem_object *obj; + unsigned int hsub; + unsigned int vsub; + int ret; + int i; + + hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format); + vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format); + + for (i = 0; i < drm_format_num_planes(mode_cmd->pixel_format); i++) { + unsigned int width = mode_cmd->width / (i ? hsub : 1); + unsigned int height = mode_cmd->height / (i ? vsub : 1); + unsigned int min_size; + + obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[i]); + if (!obj) { + dev_err(dev->dev, "Failed to lookup GEM object\n"); + ret = -ENXIO; + goto err_gem_object_unreference; + } + + min_size = (height - 1) * mode_cmd->pitches[i] + + width * drm_format_plane_cpp(mode_cmd->pixel_format, i) + + mode_cmd->offsets[i]; + + if (obj->size < min_size) { + drm_gem_object_unreference_unlocked(obj); + ret = -EINVAL; + goto err_gem_object_unreference; + } + objs[i] = to_drm_gem_cma_obj(obj); + } + + fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i); + if (IS_ERR(fb_cma)) { + ret = PTR_ERR(fb_cma); + goto err_gem_object_unreference; + } + + return &fb_cma->fb; + +err_gem_object_unreference: + for (i--; i >= 0; i--) + drm_gem_object_unreference_unlocked(&objs[i]->base); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(drm_fb_cma_create); + +/** + * drm_fb_cma_get_gem_obj() - Get CMA GEM object for framebuffer + * @fb: The framebuffer + * @plane: Which plane + * + * Return the CMA GEM object for given framebuffer. + * + * This function will usually be called from the CRTC callback functions. + */ +struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb, + unsigned int plane) +{ + struct drm_fb_cma *fb_cma = to_fb_cma(fb); + + if (plane >= 4) + return NULL; + + return fb_cma->obj[plane]; +} +EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_obj); + +static struct fb_ops drm_fbdev_cma_ops = { + .owner = THIS_MODULE, + .fb_fillrect = sys_fillrect, + .fb_copyarea = sys_copyarea, + .fb_imageblit = sys_imageblit, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_blank = drm_fb_helper_blank, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_setcmap = drm_fb_helper_setcmap, +}; + +static int drm_fbdev_cma_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct drm_fbdev_cma *fbdev_cma = to_fbdev_cma(helper); + struct drm_mode_fb_cmd2 mode_cmd = { 0 }; + struct drm_device *dev = helper->dev; + struct drm_gem_cma_object *obj; + struct drm_framebuffer *fb; + unsigned int bytes_per_pixel; + unsigned long offset; + struct fb_info *fbi; + size_t size; + int ret; + + DRM_DEBUG_KMS("surface width(%d), height(%d) and bpp(%d\n", + sizes->surface_width, sizes->surface_height, + sizes->surface_bpp); + + bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8); + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel; + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, + sizes->surface_depth); + + size = mode_cmd.pitches[0] * mode_cmd.height; + obj = drm_gem_cma_create(dev, size); + if (!obj) + return -ENOMEM; + + fbi = framebuffer_alloc(0, dev->dev); + if (!fbi) { + dev_err(dev->dev, "Failed to allocate framebuffer info.\n"); + ret = -ENOMEM; + goto err_drm_gem_cma_free_object; + } + + fbdev_cma->fb = drm_fb_cma_alloc(dev, &mode_cmd, &obj, 1); + if (IS_ERR(fbdev_cma->fb)) { + dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n"); + ret = PTR_ERR(fbdev_cma->fb); + goto err_framebuffer_release; + } + + fb = &fbdev_cma->fb->fb; + helper->fb = fb; + helper->fbdev = fbi; + + fbi->par = helper; + fbi->flags = FBINFO_FLAG_DEFAULT; + fbi->fbops = &drm_fbdev_cma_ops; + + ret = fb_alloc_cmap(&fbi->cmap, 256, 0); + if (ret) { + dev_err(dev->dev, "Failed to allocate color map.\n"); + goto err_drm_fb_cma_destroy; + } + + drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth); + drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height); + + offset = fbi->var.xoffset * bytes_per_pixel; + offset += fbi->var.yoffset * fb->pitches[0]; + + dev->mode_config.fb_base = (resource_size_t)obj->paddr; + fbi->screen_base = obj->vaddr + offset; + fbi->fix.smem_start = (unsigned long)(obj->paddr + offset); + fbi->screen_size = size; + fbi->fix.smem_len = size; + + return 0; + +err_drm_fb_cma_destroy: + drm_fb_cma_destroy(fb); +err_framebuffer_release: + framebuffer_release(fbi); +err_drm_gem_cma_free_object: + drm_gem_cma_free_object(&obj->base); + return ret; +} + +static int drm_fbdev_cma_probe(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + int ret = 0; + + if (!helper->fb) { + ret = drm_fbdev_cma_create(helper, sizes); + if (ret < 0) + return ret; + ret = 1; + } + + return ret; +} + +static struct drm_fb_helper_funcs drm_fb_cma_helper_funcs = { + .fb_probe = drm_fbdev_cma_probe, +}; + +/** + * drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct + * @dev: DRM device + * @preferred_bpp: Preferred bits per pixel for the device + * @num_crtc: Number of CRTCs + * @max_conn_count: Maximum number of connectors + * + * Returns a newly allocated drm_fbdev_cma struct or a ERR_PTR. + */ +struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev, + unsigned int preferred_bpp, unsigned int num_crtc, + unsigned int max_conn_count) +{ + struct drm_fbdev_cma *fbdev_cma; + struct drm_fb_helper *helper; + int ret; + + fbdev_cma = kzalloc(sizeof(*fbdev_cma), GFP_KERNEL); + if (!fbdev_cma) { + dev_err(dev->dev, "Failed to allocate drm fbdev.\n"); + return ERR_PTR(-ENOMEM); + } + + fbdev_cma->fb_helper.funcs = &drm_fb_cma_helper_funcs; + helper = &fbdev_cma->fb_helper; + + ret = drm_fb_helper_init(dev, helper, num_crtc, max_conn_count); + if (ret < 0) { + dev_err(dev->dev, "Failed to initialize drm fb helper.\n"); + goto err_free; + } + + ret = drm_fb_helper_single_add_all_connectors(helper); + if (ret < 0) { + dev_err(dev->dev, "Failed to add connectors.\n"); + goto err_drm_fb_helper_fini; + + } + + ret = drm_fb_helper_initial_config(helper, preferred_bpp); + if (ret < 0) { + dev_err(dev->dev, "Failed to set inital hw configuration.\n"); + goto err_drm_fb_helper_fini; + } + + return fbdev_cma; + +err_drm_fb_helper_fini: + drm_fb_helper_fini(helper); +err_free: + kfree(fbdev_cma); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(drm_fbdev_cma_init); + +/** + * drm_fbdev_cma_fini() - Free drm_fbdev_cma struct + * @fbdev_cma: The drm_fbdev_cma struct + */ +void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma) +{ + if (fbdev_cma->fb_helper.fbdev) { + struct fb_info *info; + int ret; + + info = fbdev_cma->fb_helper.fbdev; + ret = unregister_framebuffer(info); + if (ret < 0) + DRM_DEBUG_KMS("failed unregister_framebuffer()\n"); + + if (info->cmap.len) + fb_dealloc_cmap(&info->cmap); + + framebuffer_release(info); + } + + if (fbdev_cma->fb) + drm_fb_cma_destroy(&fbdev_cma->fb->fb); + + drm_fb_helper_fini(&fbdev_cma->fb_helper); + kfree(fbdev_cma); +} +EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini); + +/** + * drm_fbdev_cma_restore_mode() - Restores initial framebuffer mode + * @fbdev_cma: The drm_fbdev_cma struct, may be NULL + * + * This function is usually called from the DRM drivers lastclose callback. + */ +void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma) +{ + if (fbdev_cma) + drm_fb_helper_restore_fbdev_mode(&fbdev_cma->fb_helper); +} +EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode); + +/** + * drm_fbdev_cma_hotplug_event() - Poll for hotpulug events + * @fbdev_cma: The drm_fbdev_cma struct, may be NULL + * + * This function is usually called from the DRM drivers output_poll_changed + * callback. + */ +void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma) +{ + if (fbdev_cma) + drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper); +} +EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event); diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h new file mode 100644 index 000000000000..76c709837543 --- /dev/null +++ b/include/drm/drm_fb_cma_helper.h @@ -0,0 +1,27 @@ +#ifndef __DRM_FB_CMA_HELPER_H__ +#define __DRM_FB_CMA_HELPER_H__ + +struct drm_fbdev_cma; +struct drm_gem_cma_object; + +struct drm_framebuffer; +struct drm_device; +struct drm_file; +struct drm_mode_fb_cmd2; + +struct drm_fbdev_cma *drm_fbdev_cma_init(struct drm_device *dev, + unsigned int preferred_bpp, unsigned int num_crtc, + unsigned int max_conn_count); +void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma); + +void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma); +void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma); + +struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev, + struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd); + +struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb, + unsigned int plane); + +#endif + From ba623f6a5a419ac31806e77682da38a9f9b5b462 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 18 May 2012 23:47:40 +0200 Subject: [PATCH 4/5] drm: Add NV24 and NV42 pixel formats Signed-off-by: Laurent Pinchart --- drivers/gpu/drm/drm_crtc.c | 6 ++++++ include/drm/drm_fourcc.h | 2 ++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 08a7aa722d6b..28d0900d7f89 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2169,6 +2169,8 @@ static int format_check(const struct drm_mode_fb_cmd2 *r) case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: + case DRM_FORMAT_NV24: + case DRM_FORMAT_NV42: case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: case DRM_FORMAT_YUV411: @@ -3718,6 +3720,8 @@ int drm_format_num_planes(uint32_t format) case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: + case DRM_FORMAT_NV24: + case DRM_FORMAT_NV42: return 2; default: return 1; @@ -3751,6 +3755,8 @@ int drm_format_plane_cpp(uint32_t format, int plane) case DRM_FORMAT_NV21: case DRM_FORMAT_NV16: case DRM_FORMAT_NV61: + case DRM_FORMAT_NV24: + case DRM_FORMAT_NV42: return plane ? 2 : 1; case DRM_FORMAT_YUV410: case DRM_FORMAT_YVU410: diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index bdf0152cbbe9..fac7235281f1 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -106,6 +106,8 @@ #define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */ #define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */ #define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */ +#define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */ +#define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */ /* 2 non contiguous plane YCbCr */ #define DRM_FORMAT_NV12M fourcc_code('N', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane */ From 51c1327876f35d61c8bdd81fc96e1b501c9380ee Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 26 Apr 2012 13:53:59 +0200 Subject: [PATCH 5/5] drm: Renesas SH Mobile DRM driver The SH Mobile LCD controller (LCDC) DRM driver supports the main graphics plane in RGB and YUV formats, as well as the overlay planes (in alpha-blending mode only). Only flat panel outputs using the parallel interface are supported. Support for SYS panels, HDMI and DSI is currently not implemented. Signed-off-by: Laurent Pinchart Reviewed-by: Sascha Hauer --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/shmobile/Kconfig | 10 + drivers/gpu/drm/shmobile/Makefile | 7 + .../gpu/drm/shmobile/shmob_drm_backlight.c | 90 +++ .../gpu/drm/shmobile/shmob_drm_backlight.h | 23 + drivers/gpu/drm/shmobile/shmob_drm_crtc.c | 763 ++++++++++++++++++ drivers/gpu/drm/shmobile/shmob_drm_crtc.h | 60 ++ drivers/gpu/drm/shmobile/shmob_drm_drv.c | 361 +++++++++ drivers/gpu/drm/shmobile/shmob_drm_drv.h | 47 ++ drivers/gpu/drm/shmobile/shmob_drm_kms.c | 160 ++++ drivers/gpu/drm/shmobile/shmob_drm_kms.h | 34 + drivers/gpu/drm/shmobile/shmob_drm_plane.c | 268 ++++++ drivers/gpu/drm/shmobile/shmob_drm_plane.h | 22 + drivers/gpu/drm/shmobile/shmob_drm_regs.h | 311 +++++++ include/linux/platform_data/shmob_drm.h | 99 +++ 16 files changed, 2258 insertions(+) create mode 100644 drivers/gpu/drm/shmobile/Kconfig create mode 100644 drivers/gpu/drm/shmobile/Makefile create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_backlight.c create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_backlight.h create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_crtc.c create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_crtc.h create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_drv.c create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_drv.h create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_kms.c create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_kms.h create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_plane.c create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_plane.h create mode 100644 drivers/gpu/drm/shmobile/shmob_drm_regs.h create mode 100644 include/linux/platform_data/shmob_drm.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 7da5f0887cad..18321b68b880 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -208,3 +208,5 @@ source "drivers/gpu/drm/ast/Kconfig" source "drivers/gpu/drm/mgag200/Kconfig" source "drivers/gpu/drm/cirrus/Kconfig" + +source "drivers/gpu/drm/shmobile/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 58961b923091..2ff5cefe9ead 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -47,4 +47,5 @@ obj-$(CONFIG_DRM_EXYNOS) +=exynos/ obj-$(CONFIG_DRM_GMA500) += gma500/ obj-$(CONFIG_DRM_UDL) += udl/ obj-$(CONFIG_DRM_AST) += ast/ +obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/ obj-y += i2c/ diff --git a/drivers/gpu/drm/shmobile/Kconfig b/drivers/gpu/drm/shmobile/Kconfig new file mode 100644 index 000000000000..7e7d52b2a2fc --- /dev/null +++ b/drivers/gpu/drm/shmobile/Kconfig @@ -0,0 +1,10 @@ +config DRM_SHMOBILE + tristate "DRM Support for SH Mobile" + depends on DRM && (SUPERH || ARCH_SHMOBILE) + select DRM_KMS_HELPER + select DRM_KMS_CMA_HELPER + select DRM_GEM_CMA_HELPER + help + Choose this option if you have an SH Mobile chipset. + If M is selected the module will be called shmob-drm. + diff --git a/drivers/gpu/drm/shmobile/Makefile b/drivers/gpu/drm/shmobile/Makefile new file mode 100644 index 000000000000..4c3eeb355630 --- /dev/null +++ b/drivers/gpu/drm/shmobile/Makefile @@ -0,0 +1,7 @@ +shmob-drm-y := shmob_drm_backlight.o \ + shmob_drm_crtc.o \ + shmob_drm_drv.o \ + shmob_drm_kms.o \ + shmob_drm_plane.o + +obj-$(CONFIG_DRM_SHMOBILE) += shmob-drm.o diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c new file mode 100644 index 000000000000..463aee18f774 --- /dev/null +++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c @@ -0,0 +1,90 @@ +/* + * shmob_drm_backlight.c -- SH Mobile DRM Backlight + * + * Copyright (C) 2012 Renesas Corporation + * + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * 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 + +#include "shmob_drm_backlight.h" +#include "shmob_drm_crtc.h" +#include "shmob_drm_drv.h" + +static int shmob_drm_backlight_update(struct backlight_device *bdev) +{ + struct shmob_drm_connector *scon = bl_get_data(bdev); + struct shmob_drm_device *sdev = scon->connector.dev->dev_private; + const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight; + int brightness = bdev->props.brightness; + + if (bdev->props.power != FB_BLANK_UNBLANK || + bdev->props.state & BL_CORE_SUSPENDED) + brightness = 0; + + return bdata->set_brightness(brightness); +} + +static int shmob_drm_backlight_get_brightness(struct backlight_device *bdev) +{ + struct shmob_drm_connector *scon = bl_get_data(bdev); + struct shmob_drm_device *sdev = scon->connector.dev->dev_private; + const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight; + + return bdata->get_brightness(); +} + +static const struct backlight_ops shmob_drm_backlight_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = shmob_drm_backlight_update, + .get_brightness = shmob_drm_backlight_get_brightness, +}; + +void shmob_drm_backlight_dpms(struct shmob_drm_connector *scon, int mode) +{ + if (scon->backlight == NULL) + return; + + scon->backlight->props.power = mode == DRM_MODE_DPMS_ON + ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; + backlight_update_status(scon->backlight); +} + +int shmob_drm_backlight_init(struct shmob_drm_connector *scon) +{ + struct shmob_drm_device *sdev = scon->connector.dev->dev_private; + const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight; + struct drm_connector *connector = &scon->connector; + struct drm_device *dev = connector->dev; + struct backlight_device *backlight; + + if (!bdata->max_brightness) + return 0; + + backlight = backlight_device_register(bdata->name, dev->dev, scon, + &shmob_drm_backlight_ops, NULL); + if (IS_ERR(backlight)) { + dev_err(dev->dev, "unable to register backlight device: %ld\n", + PTR_ERR(backlight)); + return PTR_ERR(backlight); + } + + backlight->props.max_brightness = bdata->max_brightness; + backlight->props.brightness = bdata->max_brightness; + backlight->props.power = FB_BLANK_POWERDOWN; + backlight_update_status(backlight); + + scon->backlight = backlight; + return 0; +} + +void shmob_drm_backlight_exit(struct shmob_drm_connector *scon) +{ + backlight_device_unregister(scon->backlight); +} diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.h b/drivers/gpu/drm/shmobile/shmob_drm_backlight.h new file mode 100644 index 000000000000..9477595d2ff3 --- /dev/null +++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.h @@ -0,0 +1,23 @@ +/* + * shmob_drm_backlight.h -- SH Mobile DRM Backlight + * + * Copyright (C) 2012 Renesas Corporation + * + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * 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 __SHMOB_DRM_BACKLIGHT_H__ +#define __SHMOB_DRM_BACKLIGHT_H__ + +struct shmob_drm_connector; + +void shmob_drm_backlight_dpms(struct shmob_drm_connector *scon, int mode); +int shmob_drm_backlight_init(struct shmob_drm_connector *scon); +void shmob_drm_backlight_exit(struct shmob_drm_connector *scon); + +#endif /* __SHMOB_DRM_BACKLIGHT_H__ */ diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c new file mode 100644 index 000000000000..0e7a9306bd0c --- /dev/null +++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c @@ -0,0 +1,763 @@ +/* + * shmob_drm_crtc.c -- SH Mobile DRM CRTCs + * + * Copyright (C) 2012 Renesas Corporation + * + * Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * 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 +#include + +#include +#include +#include +#include +#include + +#include