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platform: tegra: camera: add operation callback

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The Nvhost-related APIs have been deprecated and are no longer
supported since our migration from K510 to K515. Therefore, the camera
platform driver should refrain from using "nvhost_*" functions to set
the clock rate.

Integrate the common operation callback interface into the
tegra_camera_dev_info structure. This modification allows individual
drivers to achieve clock set rate operations by registering the
callback and completing the implementation.

Bug 4374126

Signed-off-by: Johnny Liu <johnliu@nvidia.com>
Change-Id: Iebed7cc974f5dbdabddded3c84d0925de3a6c4f9
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3020535
(cherry picked from commit 57a82628aa)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3023111
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Johnny Liu
2023-11-22 08:39:15 +00:00
committed by mobile promotions
parent 5fe2e2aacc
commit 2527826ca1
2 changed files with 20 additions and 25 deletions
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18
include/media/tegra_camera_platform.h
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@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2015-2022, NVIDIA CORPORATION. All rights reserved.
* SPDX-FileCopyrightText: Copyright (C) 2015-2023 NVIDIA CORPORATION. All rights reserved.
*/
#ifndef _TEGRA_CAMERA_PLATFORM_H_
@@ -38,6 +38,16 @@ enum tegra_camera_sensor_type {
SENSORTYPE_MAX,
};
struct tegra_camera_dev_info;
/**
* struct tegra_camera_dev_ops - camera device operations
* @set_rate: set the device clock rate
*/
struct tegra_camera_dev_ops {
int (*set_rate)(struct tegra_camera_dev_info *cdev_info, unsigned long rate);
};
/**
* struct tegra_camera_dev_info - camera devices information
* @priv: a unique identifier assigned during registration
@@ -45,8 +55,6 @@ enum tegra_camera_sensor_type {
* @bus_width: csi bus width for clock calculation
* @overhead: hw/ sw overhead considered while calculations
* @ppc: HW capability, pixels per clock
* @clk_rate: calculated clk rate for this node
* @actual_clk_rate: clk rate set by nvhost
* @bw: calculated bw for this node
* @use_max: populated by hw engine to decide it's clocking policy
* @memory_latency: latency allowed for memory freq scaling
@@ -57,6 +65,7 @@ enum tegra_camera_sensor_type {
* @bpp: bytes per pixel
* @stream_on: stream enabled on the channel
* @device_node: list node
* @ops: operation callbacks of the camera device
*/
struct tegra_camera_dev_info {
void *priv;
@@ -66,9 +75,7 @@ struct tegra_camera_dev_info {
u64 lane_speed;
u32 lane_num;
u32 ppc;
u64 clk_rate;
u64 pg_clk_rate;
unsigned long actual_clk_rate;
u64 bw;
bool use_max;
u32 memory_latency;
@@ -79,6 +86,7 @@ struct tegra_camera_dev_info {
u32 bpp;
bool stream_on;
struct list_head device_node;
const struct tegra_camera_dev_ops *ops;
};
int tegra_camera_update_isobw(void);