mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
125 lines
4.2 KiB
Diff
125 lines
4.2 KiB
Diff
From 03f4e4a6e625306671266db609b4f4d488b6cf6d Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Fri, 1 Jul 2016 13:10:38 -0700
|
|
Subject: [PATCH] drm/vc4: Add a getparam ioctl for getting the V3D identity
|
|
regs.
|
|
|
|
As I extend the driver to support different V3D revisions, userspace
|
|
needs to know what version it's targeting. This is most easily
|
|
detected using the V3D identity registers.
|
|
|
|
v2: Make sure V3D is runtime PM on when reading the registers.
|
|
v3: Switch to a 64-bit param value (suggested by Rob Clark in review)
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v2)
|
|
Reviewed-by: Rob Clark <robdclark@gmail.com> (v3, over irc)
|
|
(cherry picked from commit af713795c59fea36161a7debf97dbc10bf652cf7)
|
|
|
|
v4: Squashed in "drm/vc4: Fix handling of a pm_runtime_get_sync() success case."
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_drv.c | 42 ++++++++++++++++++++++++++++++++++++++++++
|
|
include/uapi/drm/vc4_drm.h | 12 ++++++++++++
|
|
2 files changed, 54 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_drv.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
|
|
@@ -15,6 +15,7 @@
|
|
#include <linux/module.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
+#include <linux/pm_runtime.h>
|
|
#include "drm_fb_cma_helper.h"
|
|
|
|
#include "uapi/drm/vc4_drm.h"
|
|
@@ -64,6 +65,46 @@ void vc4_dump_regs32(const struct debugf
|
|
}
|
|
}
|
|
|
|
+static int vc4_get_param_ioctl(struct drm_device *dev, void *data,
|
|
+ struct drm_file *file_priv)
|
|
+{
|
|
+ struct vc4_dev *vc4 = to_vc4_dev(dev);
|
|
+ struct drm_vc4_get_param *args = data;
|
|
+ int ret;
|
|
+
|
|
+ if (args->pad != 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ switch (args->param) {
|
|
+ case DRM_VC4_PARAM_V3D_IDENT0:
|
|
+ ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ args->value = V3D_READ(V3D_IDENT0);
|
|
+ pm_runtime_put(&vc4->v3d->pdev->dev);
|
|
+ break;
|
|
+ case DRM_VC4_PARAM_V3D_IDENT1:
|
|
+ ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ args->value = V3D_READ(V3D_IDENT1);
|
|
+ pm_runtime_put(&vc4->v3d->pdev->dev);
|
|
+ break;
|
|
+ case DRM_VC4_PARAM_V3D_IDENT2:
|
|
+ ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+ args->value = V3D_READ(V3D_IDENT2);
|
|
+ pm_runtime_put(&vc4->v3d->pdev->dev);
|
|
+ break;
|
|
+ default:
|
|
+ DRM_DEBUG("Unknown parameter %d\n", args->param);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static void vc4_lastclose(struct drm_device *dev)
|
|
{
|
|
struct vc4_dev *vc4 = to_vc4_dev(dev);
|
|
@@ -95,6 +136,7 @@ static const struct drm_ioctl_desc vc4_d
|
|
DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl,
|
|
DRM_ROOT_ONLY),
|
|
+ DRM_IOCTL_DEF_DRV(VC4_GET_PARAM, vc4_get_param_ioctl, DRM_RENDER_ALLOW),
|
|
};
|
|
|
|
static struct drm_driver vc4_drm_driver = {
|
|
--- a/include/uapi/drm/vc4_drm.h
|
|
+++ b/include/uapi/drm/vc4_drm.h
|
|
@@ -37,6 +37,7 @@ extern "C" {
|
|
#define DRM_VC4_MMAP_BO 0x04
|
|
#define DRM_VC4_CREATE_SHADER_BO 0x05
|
|
#define DRM_VC4_GET_HANG_STATE 0x06
|
|
+#define DRM_VC4_GET_PARAM 0x07
|
|
|
|
#define DRM_IOCTL_VC4_SUBMIT_CL DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_SUBMIT_CL, struct drm_vc4_submit_cl)
|
|
#define DRM_IOCTL_VC4_WAIT_SEQNO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_WAIT_SEQNO, struct drm_vc4_wait_seqno)
|
|
@@ -45,6 +46,7 @@ extern "C" {
|
|
#define DRM_IOCTL_VC4_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_MMAP_BO, struct drm_vc4_mmap_bo)
|
|
#define DRM_IOCTL_VC4_CREATE_SHADER_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_CREATE_SHADER_BO, struct drm_vc4_create_shader_bo)
|
|
#define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state)
|
|
+#define DRM_IOCTL_VC4_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_PARAM, struct drm_vc4_get_param)
|
|
|
|
struct drm_vc4_submit_rcl_surface {
|
|
__u32 hindex; /* Handle index, or ~0 if not present. */
|
|
@@ -280,6 +282,16 @@ struct drm_vc4_get_hang_state {
|
|
__u32 pad[16];
|
|
};
|
|
|
|
+#define DRM_VC4_PARAM_V3D_IDENT0 0
|
|
+#define DRM_VC4_PARAM_V3D_IDENT1 1
|
|
+#define DRM_VC4_PARAM_V3D_IDENT2 2
|
|
+
|
|
+struct drm_vc4_get_param {
|
|
+ __u32 param;
|
|
+ __u32 pad;
|
|
+ __u64 value;
|
|
+};
|
|
+
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|