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media: atmel: atmel-isc: split driver into driver base and isc
This splits the Atmel ISC driver into a common base: atmel-isc-base.c and the driver probe/dt part , atmel-sama5d2-isc.c This is needed to keep a common ground for the sensor controller which will be reused. The atmel-isc will use the common symbols inside the atmel-isc-base Future driver will also use the same symbols and redefine different aspects, for a different version of the ISC. This is done to avoid complete code duplication by creating a totally different driver for the new variant of the ISC. Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: folded 'atmel: atmel-sama5d2-isc: fixed checkpatch warnings' into this patch] Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
parent
e0c76a7d34
commit
0a0e265515
5 changed files with 621 additions and 502 deletions
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@ -10296,7 +10296,9 @@ MICROCHIP ISC DRIVER
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M: Eugen Hristev <eugen.hristev@microchip.com>
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M: Eugen Hristev <eugen.hristev@microchip.com>
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L: linux-media@vger.kernel.org
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L: linux-media@vger.kernel.org
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S: Supported
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S: Supported
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F: drivers/media/platform/atmel/atmel-isc.c
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F: drivers/media/platform/atmel/atmel-sama5d2-isc.c
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F: drivers/media/platform/atmel/atmel-isc.h
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F: drivers/media/platform/atmel/atmel-isc-base.c
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F: drivers/media/platform/atmel/atmel-isc-regs.h
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F: drivers/media/platform/atmel/atmel-isc-regs.h
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F: Documentation/devicetree/bindings/media/atmel-isc.txt
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F: Documentation/devicetree/bindings/media/atmel-isc.txt
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@ -1,3 +1,5 @@
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# SPDX-License-Identifier: GPL-2.0-only
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# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_VIDEO_ATMEL_ISC) += atmel-isc.o
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atmel-isc-objs = atmel-sama5d2-isc.o atmel-isc-base.o
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obj-$(CONFIG_VIDEO_ATMEL_ISI) += atmel-isi.o
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obj-$(CONFIG_VIDEO_ATMEL_ISI) += atmel-isi.o
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obj-$(CONFIG_VIDEO_ATMEL_ISC) += atmel-isc.o
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@ -1,24 +1,12 @@
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// SPDX-License-Identifier: GPL-2.0-only
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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/*
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* Atmel Image Sensor Controller (ISC) driver
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* Microchip Image Sensor Controller (ISC) common driver base
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*
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*
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* Copyright (C) 2016 Atmel
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* Copyright (C) 2016-2019 Microchip Technology, Inc.
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*
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*
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* Author: Songjun Wu <songjun.wu@microchip.com>
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* Author: Songjun Wu
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* Author: Eugen Hristev <eugen.hristev@microchip.com>
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*
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*
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* Sensor-->PFE-->WB-->CFA-->CC-->GAM-->CSC-->CBC-->SUB-->RLP-->DMA
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*
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* ISC video pipeline integrates the following submodules:
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* PFE: Parallel Front End to sample the camera sensor input stream
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* WB: Programmable white balance in the Bayer domain
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* CFA: Color filter array interpolation module
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* CC: Programmable color correction
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* GAM: Gamma correction
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* CSC: Programmable color space conversion
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* CBC: Contrast and Brightness control
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* SUB: This module performs YCbCr444 to YCbCr420 chrominance subsampling
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* RLP: This module performs rounding, range limiting
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* and packing of the incoming data
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*/
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*/
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#include <linux/clk.h>
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#include <linux/clk.h>
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@ -45,185 +33,19 @@
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#include <media/videobuf2-dma-contig.h>
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#include <media/videobuf2-dma-contig.h>
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#include "atmel-isc-regs.h"
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#include "atmel-isc-regs.h"
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#include "atmel-isc.h"
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#define ATMEL_ISC_NAME "atmel_isc"
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unsigned int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "debug level (0-2)");
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#define ISC_MAX_SUPPORT_WIDTH 2592
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unsigned int sensor_preferred = 1;
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#define ISC_MAX_SUPPORT_HEIGHT 1944
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module_param(sensor_preferred, uint, 0644);
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MODULE_PARM_DESC(sensor_preferred,
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#define ISC_CLK_MAX_DIV 255
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"Sensor is preferred to output the specified format (1-on 0-off), default 1");
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enum isc_clk_id {
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ISC_ISPCK = 0,
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ISC_MCK = 1,
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};
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struct isc_clk {
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struct clk_hw hw;
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struct clk *clk;
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struct regmap *regmap;
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spinlock_t lock;
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u8 id;
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u8 parent_id;
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u32 div;
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struct device *dev;
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};
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#define to_isc_clk(hw) container_of(hw, struct isc_clk, hw)
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struct isc_buffer {
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struct vb2_v4l2_buffer vb;
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struct list_head list;
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};
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struct isc_subdev_entity {
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struct v4l2_subdev *sd;
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struct v4l2_async_subdev *asd;
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struct v4l2_async_notifier notifier;
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u32 pfe_cfg0;
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struct list_head list;
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};
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/*
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* struct isc_format - ISC media bus format information
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This structure represents the interface between the ISC
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and the sensor. It's the input format received by
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the ISC.
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* @fourcc: Fourcc code for this format
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* @mbus_code: V4L2 media bus format code.
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* @cfa_baycfg: If this format is RAW BAYER, indicate the type of bayer.
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this is either BGBG, RGRG, etc.
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* @pfe_cfg0_bps: Number of hardware data lines connected to the ISC
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*/
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struct isc_format {
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u32 fourcc;
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u32 mbus_code;
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u32 cfa_baycfg;
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bool sd_support;
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u32 pfe_cfg0_bps;
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};
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/* Pipeline bitmap */
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#define WB_ENABLE BIT(0)
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#define CFA_ENABLE BIT(1)
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#define CC_ENABLE BIT(2)
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#define GAM_ENABLE BIT(3)
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#define GAM_BENABLE BIT(4)
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#define GAM_GENABLE BIT(5)
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#define GAM_RENABLE BIT(6)
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#define CSC_ENABLE BIT(7)
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#define CBC_ENABLE BIT(8)
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#define SUB422_ENABLE BIT(9)
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#define SUB420_ENABLE BIT(10)
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#define GAM_ENABLES (GAM_RENABLE | GAM_GENABLE | GAM_BENABLE | GAM_ENABLE)
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/*
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* struct fmt_config - ISC format configuration and internal pipeline
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This structure represents the internal configuration
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of the ISC.
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It also holds the format that ISC will present to v4l2.
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* @sd_format: Pointer to an isc_format struct that holds the sensor
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configuration.
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* @fourcc: Fourcc code for this format.
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* @bpp: Bytes per pixel in the current format.
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* @rlp_cfg_mode: Configuration of the RLP (rounding, limiting packaging)
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* @dcfg_imode: Configuration of the input of the DMA module
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* @dctrl_dview: Configuration of the output of the DMA module
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* @bits_pipeline: Configuration of the pipeline, which modules are enabled
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*/
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struct fmt_config {
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struct isc_format *sd_format;
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u32 fourcc;
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u8 bpp;
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u32 rlp_cfg_mode;
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u32 dcfg_imode;
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u32 dctrl_dview;
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u32 bits_pipeline;
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};
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#define HIST_ENTRIES 512
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#define HIST_BAYER (ISC_HIS_CFG_MODE_B + 1)
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enum{
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HIST_INIT = 0,
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HIST_ENABLED,
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HIST_DISABLED,
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};
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struct isc_ctrls {
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struct v4l2_ctrl_handler handler;
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u32 brightness;
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u32 contrast;
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u8 gamma_index;
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#define ISC_WB_NONE 0
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#define ISC_WB_AUTO 1
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#define ISC_WB_ONETIME 2
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u8 awb;
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/* one for each component : GR, R, GB, B */
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u32 gain[HIST_BAYER];
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u32 offset[HIST_BAYER];
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u32 hist_entry[HIST_ENTRIES];
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u32 hist_count[HIST_BAYER];
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u8 hist_id;
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u8 hist_stat;
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#define HIST_MIN_INDEX 0
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#define HIST_MAX_INDEX 1
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u32 hist_minmax[HIST_BAYER][2];
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};
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#define ISC_PIPE_LINE_NODE_NUM 11
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struct isc_device {
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struct regmap *regmap;
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struct clk *hclock;
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struct clk *ispck;
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struct isc_clk isc_clks[2];
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struct device *dev;
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struct v4l2_device v4l2_dev;
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struct video_device video_dev;
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struct vb2_queue vb2_vidq;
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spinlock_t dma_queue_lock;
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struct list_head dma_queue;
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struct isc_buffer *cur_frm;
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unsigned int sequence;
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bool stop;
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struct completion comp;
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struct v4l2_format fmt;
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struct isc_format **user_formats;
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unsigned int num_user_formats;
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struct fmt_config config;
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struct fmt_config try_config;
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struct isc_ctrls ctrls;
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struct v4l2_ctrl *do_wb_ctrl;
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struct work_struct awb_work;
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struct mutex lock;
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spinlock_t awb_lock;
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struct regmap_field *pipeline[ISC_PIPE_LINE_NODE_NUM];
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struct isc_subdev_entity *current_subdev;
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struct list_head subdev_entities;
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};
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/* This is a list of the formats that the ISC can *output* */
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/* This is a list of the formats that the ISC can *output* */
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static struct isc_format controller_formats[] = {
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struct isc_format controller_formats[] = {
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{
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{
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.fourcc = V4L2_PIX_FMT_ARGB444,
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.fourcc = V4L2_PIX_FMT_ARGB444,
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},
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},
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};
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};
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/* This is a list of formats that the ISC can receive as *input* */
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/* This is a list of formats that the ISC can receive as *input* */
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static struct isc_format formats_list[] = {
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struct isc_format formats_list[] = {
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{
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{
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
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.mbus_code = MEDIA_BUS_FMT_SBGGR8_1X8,
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},
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},
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};
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};
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#define GAMMA_MAX 2
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#define GAMMA_ENTRIES 64
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/* Gamma table with gamma 1/2.2 */
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/* Gamma table with gamma 1/2.2 */
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static const u32 isc_gamma_table[GAMMA_MAX + 1][GAMMA_ENTRIES] = {
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const u32 isc_gamma_table[GAMMA_MAX + 1][GAMMA_ENTRIES] = {
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/* 0 --> gamma 1/1.8 */
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/* 0 --> gamma 1/1.8 */
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{ 0x65, 0x66002F, 0x950025, 0xBB0020, 0xDB001D, 0xF8001A,
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{ 0x65, 0x66002F, 0x950025, 0xBB0020, 0xDB001D, 0xF8001A,
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0x1130018, 0x12B0017, 0x1420016, 0x1580014, 0x16D0013, 0x1810012,
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0x1130018, 0x12B0017, 0x1420016, 0x1580014, 0x16D0013, 0x1810012,
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#define ISC_IS_FORMAT_RAW(mbus_code) \
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#define ISC_IS_FORMAT_RAW(mbus_code) \
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(((mbus_code) & 0xf000) == 0x3000)
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(((mbus_code) & 0xf000) == 0x3000)
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static unsigned int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "debug level (0-2)");
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static unsigned int sensor_preferred = 1;
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module_param(sensor_preferred, uint, 0644);
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MODULE_PARM_DESC(sensor_preferred,
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"Sensor is preferred to output the specified format (1-on 0-off), default 1");
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static inline void isc_update_awb_ctrls(struct isc_device *isc)
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static inline void isc_update_awb_ctrls(struct isc_device *isc)
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{
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{
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struct isc_ctrls *ctrls = &isc->ctrls;
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struct isc_ctrls *ctrls = &isc->ctrls;
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return 0;
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return 0;
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}
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}
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static int isc_clk_init(struct isc_device *isc)
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int isc_clk_init(struct isc_device *isc)
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{
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{
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unsigned int i;
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unsigned int i;
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int ret;
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int ret;
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return 0;
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return 0;
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}
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}
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static void isc_clk_cleanup(struct isc_device *isc)
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void isc_clk_cleanup(struct isc_device *isc)
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{
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{
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unsigned int i;
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unsigned int i;
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.poll = vb2_fop_poll,
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.poll = vb2_fop_poll,
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};
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};
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static irqreturn_t isc_interrupt(int irq, void *dev_id)
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irqreturn_t isc_interrupt(int irq, void *dev_id)
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{
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{
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struct isc_device *isc = (struct isc_device *)dev_id;
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struct isc_device *isc = (struct isc_device *)dev_id;
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struct regmap *regmap = isc->regmap;
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struct regmap *regmap = isc->regmap;
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return 0;
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return 0;
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}
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}
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static const struct v4l2_async_notifier_operations isc_async_ops = {
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const struct v4l2_async_notifier_operations isc_async_ops = {
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.bound = isc_async_bound,
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.bound = isc_async_bound,
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.unbind = isc_async_unbind,
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.unbind = isc_async_unbind,
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.complete = isc_async_complete,
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.complete = isc_async_complete,
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};
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};
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static void isc_subdev_cleanup(struct isc_device *isc)
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void isc_subdev_cleanup(struct isc_device *isc)
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{
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{
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struct isc_subdev_entity *subdev_entity;
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struct isc_subdev_entity *subdev_entity;
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INIT_LIST_HEAD(&isc->subdev_entities);
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INIT_LIST_HEAD(&isc->subdev_entities);
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}
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}
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static int isc_pipeline_init(struct isc_device *isc)
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int isc_pipeline_init(struct isc_device *isc)
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{
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{
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struct device *dev = isc->dev;
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struct device *dev = isc->dev;
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struct regmap *regmap = isc->regmap;
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struct regmap *regmap = isc->regmap;
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||||||
|
@ -2332,300 +2142,12 @@ static int isc_pipeline_init(struct isc_device *isc)
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int isc_parse_dt(struct device *dev, struct isc_device *isc)
|
|
||||||
{
|
|
||||||
struct device_node *np = dev->of_node;
|
|
||||||
struct device_node *epn = NULL, *rem;
|
|
||||||
struct isc_subdev_entity *subdev_entity;
|
|
||||||
unsigned int flags;
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
INIT_LIST_HEAD(&isc->subdev_entities);
|
|
||||||
|
|
||||||
while (1) {
|
|
||||||
struct v4l2_fwnode_endpoint v4l2_epn = { .bus_type = 0 };
|
|
||||||
|
|
||||||
epn = of_graph_get_next_endpoint(np, epn);
|
|
||||||
if (!epn)
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
rem = of_graph_get_remote_port_parent(epn);
|
|
||||||
if (!rem) {
|
|
||||||
dev_notice(dev, "Remote device at %pOF not found\n",
|
|
||||||
epn);
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(epn),
|
|
||||||
&v4l2_epn);
|
|
||||||
if (ret) {
|
|
||||||
of_node_put(rem);
|
|
||||||
ret = -EINVAL;
|
|
||||||
dev_err(dev, "Could not parse the endpoint\n");
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
subdev_entity = devm_kzalloc(dev,
|
|
||||||
sizeof(*subdev_entity), GFP_KERNEL);
|
|
||||||
if (!subdev_entity) {
|
|
||||||
of_node_put(rem);
|
|
||||||
ret = -ENOMEM;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* asd will be freed by the subsystem once it's added to the
|
|
||||||
* notifier list
|
|
||||||
*/
|
|
||||||
subdev_entity->asd = kzalloc(sizeof(*subdev_entity->asd),
|
|
||||||
GFP_KERNEL);
|
|
||||||
if (!subdev_entity->asd) {
|
|
||||||
of_node_put(rem);
|
|
||||||
ret = -ENOMEM;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
flags = v4l2_epn.bus.parallel.flags;
|
|
||||||
|
|
||||||
if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
|
|
||||||
subdev_entity->pfe_cfg0 = ISC_PFE_CFG0_HPOL_LOW;
|
|
||||||
|
|
||||||
if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
|
|
||||||
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_VPOL_LOW;
|
|
||||||
|
|
||||||
if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
|
|
||||||
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_PPOL_LOW;
|
|
||||||
|
|
||||||
if (v4l2_epn.bus_type == V4L2_MBUS_BT656)
|
|
||||||
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_CCIR_CRC |
|
|
||||||
ISC_PFE_CFG0_CCIR656;
|
|
||||||
|
|
||||||
subdev_entity->asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
|
|
||||||
subdev_entity->asd->match.fwnode =
|
|
||||||
of_fwnode_handle(rem);
|
|
||||||
list_add_tail(&subdev_entity->list, &isc->subdev_entities);
|
|
||||||
}
|
|
||||||
|
|
||||||
of_node_put(epn);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* regmap configuration */
|
/* regmap configuration */
|
||||||
#define ATMEL_ISC_REG_MAX 0xbfc
|
#define ATMEL_ISC_REG_MAX 0xbfc
|
||||||
static const struct regmap_config isc_regmap_config = {
|
const struct regmap_config isc_regmap_config = {
|
||||||
.reg_bits = 32,
|
.reg_bits = 32,
|
||||||
.reg_stride = 4,
|
.reg_stride = 4,
|
||||||
.val_bits = 32,
|
.val_bits = 32,
|
||||||
.max_register = ATMEL_ISC_REG_MAX,
|
.max_register = ATMEL_ISC_REG_MAX,
|
||||||
};
|
};
|
||||||
|
|
||||||
static int atmel_isc_probe(struct platform_device *pdev)
|
|
||||||
{
|
|
||||||
struct device *dev = &pdev->dev;
|
|
||||||
struct isc_device *isc;
|
|
||||||
struct resource *res;
|
|
||||||
void __iomem *io_base;
|
|
||||||
struct isc_subdev_entity *subdev_entity;
|
|
||||||
int irq;
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
|
|
||||||
if (!isc)
|
|
||||||
return -ENOMEM;
|
|
||||||
|
|
||||||
platform_set_drvdata(pdev, isc);
|
|
||||||
isc->dev = dev;
|
|
||||||
|
|
||||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
||||||
io_base = devm_ioremap_resource(dev, res);
|
|
||||||
if (IS_ERR(io_base))
|
|
||||||
return PTR_ERR(io_base);
|
|
||||||
|
|
||||||
isc->regmap = devm_regmap_init_mmio(dev, io_base, &isc_regmap_config);
|
|
||||||
if (IS_ERR(isc->regmap)) {
|
|
||||||
ret = PTR_ERR(isc->regmap);
|
|
||||||
dev_err(dev, "failed to init register map: %d\n", ret);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
irq = platform_get_irq(pdev, 0);
|
|
||||||
if (irq < 0) {
|
|
||||||
ret = irq;
|
|
||||||
dev_err(dev, "failed to get irq: %d\n", ret);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = devm_request_irq(dev, irq, isc_interrupt, 0,
|
|
||||||
ATMEL_ISC_NAME, isc);
|
|
||||||
if (ret < 0) {
|
|
||||||
dev_err(dev, "can't register ISR for IRQ %u (ret=%i)\n",
|
|
||||||
irq, ret);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = isc_pipeline_init(isc);
|
|
||||||
if (ret)
|
|
||||||
return ret;
|
|
||||||
|
|
||||||
isc->hclock = devm_clk_get(dev, "hclock");
|
|
||||||
if (IS_ERR(isc->hclock)) {
|
|
||||||
ret = PTR_ERR(isc->hclock);
|
|
||||||
dev_err(dev, "failed to get hclock: %d\n", ret);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = clk_prepare_enable(isc->hclock);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "failed to enable hclock: %d\n", ret);
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = isc_clk_init(isc);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "failed to init isc clock: %d\n", ret);
|
|
||||||
goto unprepare_hclk;
|
|
||||||
}
|
|
||||||
|
|
||||||
isc->ispck = isc->isc_clks[ISC_ISPCK].clk;
|
|
||||||
|
|
||||||
ret = clk_prepare_enable(isc->ispck);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "failed to enable ispck: %d\n", ret);
|
|
||||||
goto unprepare_hclk;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* ispck should be greater or equal to hclock */
|
|
||||||
ret = clk_set_rate(isc->ispck, clk_get_rate(isc->hclock));
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "failed to set ispck rate: %d\n", ret);
|
|
||||||
goto unprepare_clk;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = v4l2_device_register(dev, &isc->v4l2_dev);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "unable to register v4l2 device.\n");
|
|
||||||
goto unprepare_clk;
|
|
||||||
}
|
|
||||||
|
|
||||||
ret = isc_parse_dt(dev, isc);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "fail to parse device tree\n");
|
|
||||||
goto unregister_v4l2_device;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (list_empty(&isc->subdev_entities)) {
|
|
||||||
dev_err(dev, "no subdev found\n");
|
|
||||||
ret = -ENODEV;
|
|
||||||
goto unregister_v4l2_device;
|
|
||||||
}
|
|
||||||
|
|
||||||
list_for_each_entry(subdev_entity, &isc->subdev_entities, list) {
|
|
||||||
v4l2_async_notifier_init(&subdev_entity->notifier);
|
|
||||||
|
|
||||||
ret = v4l2_async_notifier_add_subdev(&subdev_entity->notifier,
|
|
||||||
subdev_entity->asd);
|
|
||||||
if (ret) {
|
|
||||||
fwnode_handle_put(subdev_entity->asd->match.fwnode);
|
|
||||||
kfree(subdev_entity->asd);
|
|
||||||
goto cleanup_subdev;
|
|
||||||
}
|
|
||||||
|
|
||||||
subdev_entity->notifier.ops = &isc_async_ops;
|
|
||||||
|
|
||||||
ret = v4l2_async_notifier_register(&isc->v4l2_dev,
|
|
||||||
&subdev_entity->notifier);
|
|
||||||
if (ret) {
|
|
||||||
dev_err(dev, "fail to register async notifier\n");
|
|
||||||
goto cleanup_subdev;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (video_is_registered(&isc->video_dev))
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
pm_runtime_set_active(dev);
|
|
||||||
pm_runtime_enable(dev);
|
|
||||||
pm_request_idle(dev);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
cleanup_subdev:
|
|
||||||
isc_subdev_cleanup(isc);
|
|
||||||
|
|
||||||
unregister_v4l2_device:
|
|
||||||
v4l2_device_unregister(&isc->v4l2_dev);
|
|
||||||
|
|
||||||
unprepare_clk:
|
|
||||||
clk_disable_unprepare(isc->ispck);
|
|
||||||
unprepare_hclk:
|
|
||||||
clk_disable_unprepare(isc->hclock);
|
|
||||||
|
|
||||||
isc_clk_cleanup(isc);
|
|
||||||
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
static int atmel_isc_remove(struct platform_device *pdev)
|
|
||||||
{
|
|
||||||
struct isc_device *isc = platform_get_drvdata(pdev);
|
|
||||||
|
|
||||||
pm_runtime_disable(&pdev->dev);
|
|
||||||
clk_disable_unprepare(isc->ispck);
|
|
||||||
clk_disable_unprepare(isc->hclock);
|
|
||||||
|
|
||||||
isc_subdev_cleanup(isc);
|
|
||||||
|
|
||||||
v4l2_device_unregister(&isc->v4l2_dev);
|
|
||||||
|
|
||||||
isc_clk_cleanup(isc);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
static int __maybe_unused isc_runtime_suspend(struct device *dev)
|
|
||||||
{
|
|
||||||
struct isc_device *isc = dev_get_drvdata(dev);
|
|
||||||
|
|
||||||
clk_disable_unprepare(isc->ispck);
|
|
||||||
clk_disable_unprepare(isc->hclock);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
static int __maybe_unused isc_runtime_resume(struct device *dev)
|
|
||||||
{
|
|
||||||
struct isc_device *isc = dev_get_drvdata(dev);
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
ret = clk_prepare_enable(isc->hclock);
|
|
||||||
if (ret)
|
|
||||||
return ret;
|
|
||||||
|
|
||||||
return clk_prepare_enable(isc->ispck);
|
|
||||||
}
|
|
||||||
|
|
||||||
static const struct dev_pm_ops atmel_isc_dev_pm_ops = {
|
|
||||||
SET_RUNTIME_PM_OPS(isc_runtime_suspend, isc_runtime_resume, NULL)
|
|
||||||
};
|
|
||||||
|
|
||||||
static const struct of_device_id atmel_isc_of_match[] = {
|
|
||||||
{ .compatible = "atmel,sama5d2-isc" },
|
|
||||||
{ }
|
|
||||||
};
|
|
||||||
MODULE_DEVICE_TABLE(of, atmel_isc_of_match);
|
|
||||||
|
|
||||||
static struct platform_driver atmel_isc_driver = {
|
|
||||||
.probe = atmel_isc_probe,
|
|
||||||
.remove = atmel_isc_remove,
|
|
||||||
.driver = {
|
|
||||||
.name = ATMEL_ISC_NAME,
|
|
||||||
.pm = &atmel_isc_dev_pm_ops,
|
|
||||||
.of_match_table = of_match_ptr(atmel_isc_of_match),
|
|
||||||
},
|
|
||||||
};
|
|
||||||
|
|
||||||
module_platform_driver(atmel_isc_driver);
|
|
||||||
|
|
||||||
MODULE_AUTHOR("Songjun Wu <songjun.wu@microchip.com>");
|
|
||||||
MODULE_DESCRIPTION("The V4L2 driver for Atmel-ISC");
|
|
||||||
MODULE_LICENSE("GPL v2");
|
|
||||||
MODULE_SUPPORTED_DEVICE("video");
|
|
249
drivers/media/platform/atmel/atmel-isc.h
Normal file
249
drivers/media/platform/atmel/atmel-isc.h
Normal file
|
@ -0,0 +1,249 @@
|
||||||
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||||||
|
/*
|
||||||
|
* Microchip Image Sensor Controller (ISC) driver header file
|
||||||
|
*
|
||||||
|
* Copyright (C) 2016-2019 Microchip Technology, Inc.
|
||||||
|
*
|
||||||
|
* Author: Songjun Wu
|
||||||
|
* Author: Eugen Hristev <eugen.hristev@microchip.com>
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#ifndef _ATMEL_ISC_H_
|
||||||
|
|
||||||
|
#define ISC_MAX_SUPPORT_WIDTH 2592
|
||||||
|
#define ISC_MAX_SUPPORT_HEIGHT 1944
|
||||||
|
|
||||||
|
#define ISC_CLK_MAX_DIV 255
|
||||||
|
|
||||||
|
enum isc_clk_id {
|
||||||
|
ISC_ISPCK = 0,
|
||||||
|
ISC_MCK = 1,
|
||||||
|
};
|
||||||
|
|
||||||
|
struct isc_clk {
|
||||||
|
struct clk_hw hw;
|
||||||
|
struct clk *clk;
|
||||||
|
struct regmap *regmap;
|
||||||
|
spinlock_t lock; /* serialize access to clock registers */
|
||||||
|
u8 id;
|
||||||
|
u8 parent_id;
|
||||||
|
u32 div;
|
||||||
|
struct device *dev;
|
||||||
|
};
|
||||||
|
|
||||||
|
#define to_isc_clk(v) container_of(v, struct isc_clk, hw)
|
||||||
|
|
||||||
|
struct isc_buffer {
|
||||||
|
struct vb2_v4l2_buffer vb;
|
||||||
|
struct list_head list;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct isc_subdev_entity {
|
||||||
|
struct v4l2_subdev *sd;
|
||||||
|
struct v4l2_async_subdev *asd;
|
||||||
|
struct v4l2_async_notifier notifier;
|
||||||
|
|
||||||
|
u32 pfe_cfg0;
|
||||||
|
|
||||||
|
struct list_head list;
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* struct isc_format - ISC media bus format information
|
||||||
|
This structure represents the interface between the ISC
|
||||||
|
and the sensor. It's the input format received by
|
||||||
|
the ISC.
|
||||||
|
* @fourcc: Fourcc code for this format
|
||||||
|
* @mbus_code: V4L2 media bus format code.
|
||||||
|
* @cfa_baycfg: If this format is RAW BAYER, indicate the type of bayer.
|
||||||
|
this is either BGBG, RGRG, etc.
|
||||||
|
* @pfe_cfg0_bps: Number of hardware data lines connected to the ISC
|
||||||
|
*/
|
||||||
|
|
||||||
|
struct isc_format {
|
||||||
|
u32 fourcc;
|
||||||
|
u32 mbus_code;
|
||||||
|
u32 cfa_baycfg;
|
||||||
|
|
||||||
|
bool sd_support;
|
||||||
|
u32 pfe_cfg0_bps;
|
||||||
|
};
|
||||||
|
|
||||||
|
/* Pipeline bitmap */
|
||||||
|
#define WB_ENABLE BIT(0)
|
||||||
|
#define CFA_ENABLE BIT(1)
|
||||||
|
#define CC_ENABLE BIT(2)
|
||||||
|
#define GAM_ENABLE BIT(3)
|
||||||
|
#define GAM_BENABLE BIT(4)
|
||||||
|
#define GAM_GENABLE BIT(5)
|
||||||
|
#define GAM_RENABLE BIT(6)
|
||||||
|
#define CSC_ENABLE BIT(7)
|
||||||
|
#define CBC_ENABLE BIT(8)
|
||||||
|
#define SUB422_ENABLE BIT(9)
|
||||||
|
#define SUB420_ENABLE BIT(10)
|
||||||
|
|
||||||
|
#define GAM_ENABLES (GAM_RENABLE | GAM_GENABLE | GAM_BENABLE | GAM_ENABLE)
|
||||||
|
|
||||||
|
/*
|
||||||
|
* struct fmt_config - ISC format configuration and internal pipeline
|
||||||
|
This structure represents the internal configuration
|
||||||
|
of the ISC.
|
||||||
|
It also holds the format that ISC will present to v4l2.
|
||||||
|
* @sd_format: Pointer to an isc_format struct that holds the sensor
|
||||||
|
configuration.
|
||||||
|
* @fourcc: Fourcc code for this format.
|
||||||
|
* @bpp: Bytes per pixel in the current format.
|
||||||
|
* @rlp_cfg_mode: Configuration of the RLP (rounding, limiting packaging)
|
||||||
|
* @dcfg_imode: Configuration of the input of the DMA module
|
||||||
|
* @dctrl_dview: Configuration of the output of the DMA module
|
||||||
|
* @bits_pipeline: Configuration of the pipeline, which modules are enabled
|
||||||
|
*/
|
||||||
|
struct fmt_config {
|
||||||
|
struct isc_format *sd_format;
|
||||||
|
|
||||||
|
u32 fourcc;
|
||||||
|
u8 bpp;
|
||||||
|
|
||||||
|
u32 rlp_cfg_mode;
|
||||||
|
u32 dcfg_imode;
|
||||||
|
u32 dctrl_dview;
|
||||||
|
|
||||||
|
u32 bits_pipeline;
|
||||||
|
};
|
||||||
|
|
||||||
|
#define HIST_ENTRIES 512
|
||||||
|
#define HIST_BAYER (ISC_HIS_CFG_MODE_B + 1)
|
||||||
|
|
||||||
|
enum{
|
||||||
|
HIST_INIT = 0,
|
||||||
|
HIST_ENABLED,
|
||||||
|
HIST_DISABLED,
|
||||||
|
};
|
||||||
|
|
||||||
|
struct isc_ctrls {
|
||||||
|
struct v4l2_ctrl_handler handler;
|
||||||
|
|
||||||
|
u32 brightness;
|
||||||
|
u32 contrast;
|
||||||
|
u8 gamma_index;
|
||||||
|
#define ISC_WB_NONE 0
|
||||||
|
#define ISC_WB_AUTO 1
|
||||||
|
#define ISC_WB_ONETIME 2
|
||||||
|
u8 awb;
|
||||||
|
|
||||||
|
/* one for each component : GR, R, GB, B */
|
||||||
|
u32 gain[HIST_BAYER];
|
||||||
|
u32 offset[HIST_BAYER];
|
||||||
|
|
||||||
|
u32 hist_entry[HIST_ENTRIES];
|
||||||
|
u32 hist_count[HIST_BAYER];
|
||||||
|
u8 hist_id;
|
||||||
|
u8 hist_stat;
|
||||||
|
#define HIST_MIN_INDEX 0
|
||||||
|
#define HIST_MAX_INDEX 1
|
||||||
|
u32 hist_minmax[HIST_BAYER][2];
|
||||||
|
};
|
||||||
|
|
||||||
|
#define ISC_PIPE_LINE_NODE_NUM 11
|
||||||
|
|
||||||
|
/*
|
||||||
|
* struct isc_device - ISC device driver data/config struct
|
||||||
|
* @regmap: Register map
|
||||||
|
* @hclock: Hclock clock input (refer datasheet)
|
||||||
|
* @ispck: iscpck clock (refer datasheet)
|
||||||
|
* @isc_clks: ISC clocks
|
||||||
|
*
|
||||||
|
* @dev: Registered device driver
|
||||||
|
* @v4l2_dev: v4l2 registered device
|
||||||
|
* @video_dev: registered video device
|
||||||
|
*
|
||||||
|
* @vb2_vidq: video buffer 2 video queue
|
||||||
|
* @dma_queue_lock: lock to serialize the dma buffer queue
|
||||||
|
* @dma_queue: the queue for dma buffers
|
||||||
|
* @cur_frm: current isc frame/buffer
|
||||||
|
* @sequence: current frame number
|
||||||
|
* @stop: true if isc is not streaming, false if streaming
|
||||||
|
* @comp: completion reference that signals frame completion
|
||||||
|
*
|
||||||
|
* @fmt: current v42l format
|
||||||
|
* @user_formats: list of formats that are supported and agreed with sd
|
||||||
|
* @num_user_formats: how many formats are in user_formats
|
||||||
|
*
|
||||||
|
* @config: current ISC format configuration
|
||||||
|
* @try_config: the current ISC try format , not yet activated
|
||||||
|
*
|
||||||
|
* @ctrls: holds information about ISC controls
|
||||||
|
* @do_wb_ctrl: control regarding the DO_WHITE_BALANCE button
|
||||||
|
* @awb_work: workqueue reference for autowhitebalance histogram
|
||||||
|
* analysis
|
||||||
|
*
|
||||||
|
* @lock: lock for serializing userspace file operations
|
||||||
|
* with ISC operations
|
||||||
|
* @awb_lock: lock for serializing awb work queue operations
|
||||||
|
* with DMA/buffer operations
|
||||||
|
*
|
||||||
|
* @pipeline: configuration of the ISC pipeline
|
||||||
|
*
|
||||||
|
* @current_subdev: current subdevice: the sensor
|
||||||
|
* @subdev_entities: list of subdevice entitites
|
||||||
|
*/
|
||||||
|
struct isc_device {
|
||||||
|
struct regmap *regmap;
|
||||||
|
struct clk *hclock;
|
||||||
|
struct clk *ispck;
|
||||||
|
struct isc_clk isc_clks[2];
|
||||||
|
|
||||||
|
struct device *dev;
|
||||||
|
struct v4l2_device v4l2_dev;
|
||||||
|
struct video_device video_dev;
|
||||||
|
|
||||||
|
struct vb2_queue vb2_vidq;
|
||||||
|
spinlock_t dma_queue_lock; /* serialize access to dma queue */
|
||||||
|
struct list_head dma_queue;
|
||||||
|
struct isc_buffer *cur_frm;
|
||||||
|
unsigned int sequence;
|
||||||
|
bool stop;
|
||||||
|
struct completion comp;
|
||||||
|
|
||||||
|
struct v4l2_format fmt;
|
||||||
|
struct isc_format **user_formats;
|
||||||
|
unsigned int num_user_formats;
|
||||||
|
|
||||||
|
struct fmt_config config;
|
||||||
|
struct fmt_config try_config;
|
||||||
|
|
||||||
|
struct isc_ctrls ctrls;
|
||||||
|
struct v4l2_ctrl *do_wb_ctrl;
|
||||||
|
struct work_struct awb_work;
|
||||||
|
|
||||||
|
struct mutex lock; /* serialize access to file operations */
|
||||||
|
spinlock_t awb_lock; /* serialize access to DMA buffers from awb work queue */
|
||||||
|
|
||||||
|
struct regmap_field *pipeline[ISC_PIPE_LINE_NODE_NUM];
|
||||||
|
|
||||||
|
struct isc_subdev_entity *current_subdev;
|
||||||
|
struct list_head subdev_entities;
|
||||||
|
};
|
||||||
|
|
||||||
|
#define GAMMA_MAX 2
|
||||||
|
#define GAMMA_ENTRIES 64
|
||||||
|
|
||||||
|
#define ATMEL_ISC_NAME "atmel-isc"
|
||||||
|
|
||||||
|
/* module parameters */
|
||||||
|
extern unsigned int debug;
|
||||||
|
extern unsigned int sensor_preferred;
|
||||||
|
|
||||||
|
extern struct isc_format formats_list[];
|
||||||
|
extern struct isc_format controller_formats[];
|
||||||
|
extern const u32 isc_gamma_table[GAMMA_MAX + 1][GAMMA_ENTRIES];
|
||||||
|
extern const struct regmap_config isc_regmap_config;
|
||||||
|
extern const struct v4l2_async_notifier_operations isc_async_ops;
|
||||||
|
|
||||||
|
irqreturn_t isc_interrupt(int irq, void *dev_id);
|
||||||
|
int isc_pipeline_init(struct isc_device *isc);
|
||||||
|
int isc_clk_init(struct isc_device *isc);
|
||||||
|
void isc_subdev_cleanup(struct isc_device *isc);
|
||||||
|
void isc_clk_cleanup(struct isc_device *isc);
|
||||||
|
|
||||||
|
#endif
|
344
drivers/media/platform/atmel/atmel-sama5d2-isc.c
Normal file
344
drivers/media/platform/atmel/atmel-sama5d2-isc.c
Normal file
|
@ -0,0 +1,344 @@
|
||||||
|
// SPDX-License-Identifier: GPL-2.0
|
||||||
|
/*
|
||||||
|
* Microchip Image Sensor Controller (ISC) driver
|
||||||
|
*
|
||||||
|
* Copyright (C) 2016-2019 Microchip Technology, Inc.
|
||||||
|
*
|
||||||
|
* Author: Songjun Wu
|
||||||
|
* Author: Eugen Hristev <eugen.hristev@microchip.com>
|
||||||
|
*
|
||||||
|
*
|
||||||
|
* Sensor-->PFE-->WB-->CFA-->CC-->GAM-->CSC-->CBC-->SUB-->RLP-->DMA
|
||||||
|
*
|
||||||
|
* ISC video pipeline integrates the following submodules:
|
||||||
|
* PFE: Parallel Front End to sample the camera sensor input stream
|
||||||
|
* WB: Programmable white balance in the Bayer domain
|
||||||
|
* CFA: Color filter array interpolation module
|
||||||
|
* CC: Programmable color correction
|
||||||
|
* GAM: Gamma correction
|
||||||
|
* CSC: Programmable color space conversion
|
||||||
|
* CBC: Contrast and Brightness control
|
||||||
|
* SUB: This module performs YCbCr444 to YCbCr420 chrominance subsampling
|
||||||
|
* RLP: This module performs rounding, range limiting
|
||||||
|
* and packing of the incoming data
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/clk.h>
|
||||||
|
#include <linux/clkdev.h>
|
||||||
|
#include <linux/clk-provider.h>
|
||||||
|
#include <linux/delay.h>
|
||||||
|
#include <linux/interrupt.h>
|
||||||
|
#include <linux/math64.h>
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/of.h>
|
||||||
|
#include <linux/of_graph.h>
|
||||||
|
#include <linux/platform_device.h>
|
||||||
|
#include <linux/pm_runtime.h>
|
||||||
|
#include <linux/regmap.h>
|
||||||
|
#include <linux/videodev2.h>
|
||||||
|
|
||||||
|
#include <media/v4l2-ctrls.h>
|
||||||
|
#include <media/v4l2-device.h>
|
||||||
|
#include <media/v4l2-event.h>
|
||||||
|
#include <media/v4l2-image-sizes.h>
|
||||||
|
#include <media/v4l2-ioctl.h>
|
||||||
|
#include <media/v4l2-fwnode.h>
|
||||||
|
#include <media/v4l2-subdev.h>
|
||||||
|
#include <media/videobuf2-dma-contig.h>
|
||||||
|
|
||||||
|
#include "atmel-isc-regs.h"
|
||||||
|
#include "atmel-isc.h"
|
||||||
|
|
||||||
|
#define ISC_MAX_SUPPORT_WIDTH 2592
|
||||||
|
#define ISC_MAX_SUPPORT_HEIGHT 1944
|
||||||
|
|
||||||
|
#define ISC_CLK_MAX_DIV 255
|
||||||
|
|
||||||
|
static int isc_parse_dt(struct device *dev, struct isc_device *isc)
|
||||||
|
{
|
||||||
|
struct device_node *np = dev->of_node;
|
||||||
|
struct device_node *epn = NULL, *rem;
|
||||||
|
struct isc_subdev_entity *subdev_entity;
|
||||||
|
unsigned int flags;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
INIT_LIST_HEAD(&isc->subdev_entities);
|
||||||
|
|
||||||
|
while (1) {
|
||||||
|
struct v4l2_fwnode_endpoint v4l2_epn = { .bus_type = 0 };
|
||||||
|
|
||||||
|
epn = of_graph_get_next_endpoint(np, epn);
|
||||||
|
if (!epn)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
rem = of_graph_get_remote_port_parent(epn);
|
||||||
|
if (!rem) {
|
||||||
|
dev_notice(dev, "Remote device at %pOF not found\n",
|
||||||
|
epn);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(epn),
|
||||||
|
&v4l2_epn);
|
||||||
|
if (ret) {
|
||||||
|
of_node_put(rem);
|
||||||
|
ret = -EINVAL;
|
||||||
|
dev_err(dev, "Could not parse the endpoint\n");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
subdev_entity = devm_kzalloc(dev, sizeof(*subdev_entity),
|
||||||
|
GFP_KERNEL);
|
||||||
|
if (!subdev_entity) {
|
||||||
|
of_node_put(rem);
|
||||||
|
ret = -ENOMEM;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* asd will be freed by the subsystem once it's added to the
|
||||||
|
* notifier list
|
||||||
|
*/
|
||||||
|
subdev_entity->asd = kzalloc(sizeof(*subdev_entity->asd),
|
||||||
|
GFP_KERNEL);
|
||||||
|
if (!subdev_entity->asd) {
|
||||||
|
of_node_put(rem);
|
||||||
|
ret = -ENOMEM;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
flags = v4l2_epn.bus.parallel.flags;
|
||||||
|
|
||||||
|
if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
|
||||||
|
subdev_entity->pfe_cfg0 = ISC_PFE_CFG0_HPOL_LOW;
|
||||||
|
|
||||||
|
if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
|
||||||
|
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_VPOL_LOW;
|
||||||
|
|
||||||
|
if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
|
||||||
|
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_PPOL_LOW;
|
||||||
|
|
||||||
|
if (v4l2_epn.bus_type == V4L2_MBUS_BT656)
|
||||||
|
subdev_entity->pfe_cfg0 |= ISC_PFE_CFG0_CCIR_CRC |
|
||||||
|
ISC_PFE_CFG0_CCIR656;
|
||||||
|
|
||||||
|
subdev_entity->asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
|
||||||
|
subdev_entity->asd->match.fwnode =
|
||||||
|
of_fwnode_handle(rem);
|
||||||
|
list_add_tail(&subdev_entity->list, &isc->subdev_entities);
|
||||||
|
}
|
||||||
|
|
||||||
|
of_node_put(epn);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int atmel_isc_probe(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct device *dev = &pdev->dev;
|
||||||
|
struct isc_device *isc;
|
||||||
|
struct resource *res;
|
||||||
|
void __iomem *io_base;
|
||||||
|
struct isc_subdev_entity *subdev_entity;
|
||||||
|
int irq;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);
|
||||||
|
if (!isc)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
platform_set_drvdata(pdev, isc);
|
||||||
|
isc->dev = dev;
|
||||||
|
|
||||||
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||||
|
io_base = devm_ioremap_resource(dev, res);
|
||||||
|
if (IS_ERR(io_base))
|
||||||
|
return PTR_ERR(io_base);
|
||||||
|
|
||||||
|
isc->regmap = devm_regmap_init_mmio(dev, io_base, &isc_regmap_config);
|
||||||
|
if (IS_ERR(isc->regmap)) {
|
||||||
|
ret = PTR_ERR(isc->regmap);
|
||||||
|
dev_err(dev, "failed to init register map: %d\n", ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
irq = platform_get_irq(pdev, 0);
|
||||||
|
if (irq < 0) {
|
||||||
|
ret = irq;
|
||||||
|
dev_err(dev, "failed to get irq: %d\n", ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = devm_request_irq(dev, irq, isc_interrupt, 0,
|
||||||
|
ATMEL_ISC_NAME, isc);
|
||||||
|
if (ret < 0) {
|
||||||
|
dev_err(dev, "can't register ISR for IRQ %u (ret=%i)\n",
|
||||||
|
irq, ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = isc_pipeline_init(isc);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
isc->hclock = devm_clk_get(dev, "hclock");
|
||||||
|
if (IS_ERR(isc->hclock)) {
|
||||||
|
ret = PTR_ERR(isc->hclock);
|
||||||
|
dev_err(dev, "failed to get hclock: %d\n", ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = clk_prepare_enable(isc->hclock);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "failed to enable hclock: %d\n", ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = isc_clk_init(isc);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "failed to init isc clock: %d\n", ret);
|
||||||
|
goto unprepare_hclk;
|
||||||
|
}
|
||||||
|
|
||||||
|
isc->ispck = isc->isc_clks[ISC_ISPCK].clk;
|
||||||
|
|
||||||
|
ret = clk_prepare_enable(isc->ispck);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "failed to enable ispck: %d\n", ret);
|
||||||
|
goto unprepare_hclk;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ispck should be greater or equal to hclock */
|
||||||
|
ret = clk_set_rate(isc->ispck, clk_get_rate(isc->hclock));
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "failed to set ispck rate: %d\n", ret);
|
||||||
|
goto unprepare_clk;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = v4l2_device_register(dev, &isc->v4l2_dev);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "unable to register v4l2 device.\n");
|
||||||
|
goto unprepare_clk;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = isc_parse_dt(dev, isc);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "fail to parse device tree\n");
|
||||||
|
goto unregister_v4l2_device;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (list_empty(&isc->subdev_entities)) {
|
||||||
|
dev_err(dev, "no subdev found\n");
|
||||||
|
ret = -ENODEV;
|
||||||
|
goto unregister_v4l2_device;
|
||||||
|
}
|
||||||
|
|
||||||
|
list_for_each_entry(subdev_entity, &isc->subdev_entities, list) {
|
||||||
|
v4l2_async_notifier_init(&subdev_entity->notifier);
|
||||||
|
|
||||||
|
ret = v4l2_async_notifier_add_subdev(&subdev_entity->notifier,
|
||||||
|
subdev_entity->asd);
|
||||||
|
if (ret) {
|
||||||
|
fwnode_handle_put(subdev_entity->asd->match.fwnode);
|
||||||
|
kfree(subdev_entity->asd);
|
||||||
|
goto cleanup_subdev;
|
||||||
|
}
|
||||||
|
|
||||||
|
subdev_entity->notifier.ops = &isc_async_ops;
|
||||||
|
|
||||||
|
ret = v4l2_async_notifier_register(&isc->v4l2_dev,
|
||||||
|
&subdev_entity->notifier);
|
||||||
|
if (ret) {
|
||||||
|
dev_err(dev, "fail to register async notifier\n");
|
||||||
|
goto cleanup_subdev;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (video_is_registered(&isc->video_dev))
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
pm_runtime_set_active(dev);
|
||||||
|
pm_runtime_enable(dev);
|
||||||
|
pm_request_idle(dev);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
cleanup_subdev:
|
||||||
|
isc_subdev_cleanup(isc);
|
||||||
|
|
||||||
|
unregister_v4l2_device:
|
||||||
|
v4l2_device_unregister(&isc->v4l2_dev);
|
||||||
|
|
||||||
|
unprepare_clk:
|
||||||
|
clk_disable_unprepare(isc->ispck);
|
||||||
|
unprepare_hclk:
|
||||||
|
clk_disable_unprepare(isc->hclock);
|
||||||
|
|
||||||
|
isc_clk_cleanup(isc);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int atmel_isc_remove(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct isc_device *isc = platform_get_drvdata(pdev);
|
||||||
|
|
||||||
|
pm_runtime_disable(&pdev->dev);
|
||||||
|
clk_disable_unprepare(isc->ispck);
|
||||||
|
clk_disable_unprepare(isc->hclock);
|
||||||
|
|
||||||
|
isc_subdev_cleanup(isc);
|
||||||
|
|
||||||
|
v4l2_device_unregister(&isc->v4l2_dev);
|
||||||
|
|
||||||
|
isc_clk_cleanup(isc);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __maybe_unused isc_runtime_suspend(struct device *dev)
|
||||||
|
{
|
||||||
|
struct isc_device *isc = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
clk_disable_unprepare(isc->ispck);
|
||||||
|
clk_disable_unprepare(isc->hclock);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __maybe_unused isc_runtime_resume(struct device *dev)
|
||||||
|
{
|
||||||
|
struct isc_device *isc = dev_get_drvdata(dev);
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
ret = clk_prepare_enable(isc->hclock);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
return clk_prepare_enable(isc->ispck);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct dev_pm_ops atmel_isc_dev_pm_ops = {
|
||||||
|
SET_RUNTIME_PM_OPS(isc_runtime_suspend, isc_runtime_resume, NULL)
|
||||||
|
};
|
||||||
|
|
||||||
|
static const struct of_device_id atmel_isc_of_match[] = {
|
||||||
|
{ .compatible = "atmel,sama5d2-isc" },
|
||||||
|
{ }
|
||||||
|
};
|
||||||
|
MODULE_DEVICE_TABLE(of, atmel_isc_of_match);
|
||||||
|
|
||||||
|
static struct platform_driver atmel_isc_driver = {
|
||||||
|
.probe = atmel_isc_probe,
|
||||||
|
.remove = atmel_isc_remove,
|
||||||
|
.driver = {
|
||||||
|
.name = ATMEL_ISC_NAME,
|
||||||
|
.pm = &atmel_isc_dev_pm_ops,
|
||||||
|
.of_match_table = of_match_ptr(atmel_isc_of_match),
|
||||||
|
},
|
||||||
|
};
|
||||||
|
|
||||||
|
module_platform_driver(atmel_isc_driver);
|
||||||
|
|
||||||
|
MODULE_AUTHOR("Songjun Wu");
|
||||||
|
MODULE_DESCRIPTION("The V4L2 driver for Atmel-ISC");
|
||||||
|
MODULE_LICENSE("GPL v2");
|
||||||
|
MODULE_SUPPORTED_DEVICE("video");
|
Loading…
Reference in a new issue