[media] media: mx1_camera: Remove driver
That driver hasn't been really maintained for a long time. It doesn't compile in any way, it includes non-existent headers, has no users, and marked as "BROKEN" more than year. Due to these factors, mx1_camera is now removed from the tree. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Alexander Shiyan
Mauro Carvalho Chehab
parent
0b91199984
commit
90b055898e
3 changed files with 0 additions and 880 deletions
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@ -17,19 +17,6 @@ config SOC_CAMERA_PLATFORM
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help
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This is a generic SoC camera platform driver, useful for testing
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config MX1_VIDEO
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bool
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config VIDEO_MX1
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tristate "i.MX1/i.MXL CMOS Sensor Interface driver"
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depends on BROKEN
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depends on VIDEO_DEV && ARCH_MX1 && SOC_CAMERA
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select FIQ
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select VIDEOBUF_DMA_CONTIG
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select MX1_VIDEO
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---help---
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This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface
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config VIDEO_MX3
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tristate "i.MX3x Camera Sensor Interface driver"
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depends on VIDEO_DEV && MX3_IPU && SOC_CAMERA
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@ -7,7 +7,6 @@ obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o
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# soc-camera host drivers have to be linked after camera drivers
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obj-$(CONFIG_VIDEO_ATMEL_ISI) += atmel-isi.o
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obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o
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obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o
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obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o
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obj-$(CONFIG_VIDEO_OMAP1) += omap1_camera.o
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@ -1,866 +0,0 @@
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/*
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* V4L2 Driver for i.MXL/i.MXL camera (CSI) host
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*
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* Copyright (C) 2008, Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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* Copyright (C) 2009, Darius Augulis <augulis.darius@gmail.com>
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*
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* Based on PXA SoC camera driver
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* Copyright (C) 2006, Sascha Hauer, Pengutronix
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_device.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/videodev2.h>
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#include <media/soc_camera.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-dev.h>
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#include <media/videobuf-dma-contig.h>
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#include <media/soc_mediabus.h>
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#include <asm/dma.h>
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#include <asm/fiq.h>
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#include <mach/dma-mx1-mx2.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <linux/platform_data/camera-mx1.h>
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/*
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* CSI registers
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*/
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#define CSICR1 0x00 /* CSI Control Register 1 */
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#define CSISR 0x08 /* CSI Status Register */
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#define CSIRXR 0x10 /* CSI RxFIFO Register */
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#define CSICR1_RXFF_LEVEL(x) (((x) & 0x3) << 19)
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#define CSICR1_SOF_POL (1 << 17)
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#define CSICR1_SOF_INTEN (1 << 16)
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#define CSICR1_MCLKDIV(x) (((x) & 0xf) << 12)
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#define CSICR1_MCLKEN (1 << 9)
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#define CSICR1_FCC (1 << 8)
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#define CSICR1_BIG_ENDIAN (1 << 7)
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#define CSICR1_CLR_RXFIFO (1 << 5)
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#define CSICR1_GCLK_MODE (1 << 4)
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#define CSICR1_DATA_POL (1 << 2)
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#define CSICR1_REDGE (1 << 1)
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#define CSICR1_EN (1 << 0)
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#define CSISR_SFF_OR_INT (1 << 25)
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#define CSISR_RFF_OR_INT (1 << 24)
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#define CSISR_STATFF_INT (1 << 21)
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#define CSISR_RXFF_INT (1 << 18)
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#define CSISR_SOF_INT (1 << 16)
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#define CSISR_DRDY (1 << 0)
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#define DRIVER_VERSION "0.0.2"
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#define DRIVER_NAME "mx1-camera"
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#define CSI_IRQ_MASK (CSISR_SFF_OR_INT | CSISR_RFF_OR_INT | \
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CSISR_STATFF_INT | CSISR_RXFF_INT | CSISR_SOF_INT)
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#define CSI_BUS_FLAGS (V4L2_MBUS_MASTER | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
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V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | \
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V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | \
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V4L2_MBUS_DATA_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_LOW)
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#define MAX_VIDEO_MEM 16 /* Video memory limit in megabytes */
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/*
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* Structures
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*/
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/* buffer for one video frame */
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struct mx1_buffer {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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enum v4l2_mbus_pixelcode code;
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int inwork;
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};
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/*
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* i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor
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* Interface. If anyone ever builds hardware to enable more than
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* one camera, they will have to modify this driver too
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*/
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struct mx1_camera_dev {
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struct soc_camera_host soc_host;
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struct mx1_camera_pdata *pdata;
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struct mx1_buffer *active;
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struct resource *res;
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struct clk *clk;
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struct list_head capture;
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void __iomem *base;
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int dma_chan;
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unsigned int irq;
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unsigned long mclk;
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spinlock_t lock;
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};
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/*
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* Videobuf operations
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*/
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static int mx1_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
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unsigned int *size)
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{
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struct soc_camera_device *icd = vq->priv_data;
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*size = icd->sizeimage;
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if (!*count)
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*count = 32;
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if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
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*count = (MAX_VIDEO_MEM * 1024 * 1024) / *size;
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dev_dbg(icd->parent, "count=%d, size=%d\n", *count, *size);
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return 0;
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}
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static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct videobuf_buffer *vb = &buf->vb;
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BUG_ON(in_interrupt());
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dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
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vb, vb->baddr, vb->bsize);
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/*
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* This waits until this buffer is out of danger, i.e., until it is no
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* longer in STATE_QUEUED or STATE_ACTIVE
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*/
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videobuf_waiton(vq, vb, 0, 0);
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videobuf_dma_contig_free(vq, vb);
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vb->state = VIDEOBUF_NEEDS_INIT;
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}
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static int mx1_videobuf_prepare(struct videobuf_queue *vq,
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struct videobuf_buffer *vb, enum v4l2_field field)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
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int ret;
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dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
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vb, vb->baddr, vb->bsize);
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/* Added list head initialization on alloc */
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WARN_ON(!list_empty(&vb->queue));
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BUG_ON(NULL == icd->current_fmt);
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/*
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* I think, in buf_prepare you only have to protect global data,
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* the actual buffer is yours
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*/
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buf->inwork = 1;
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if (buf->code != icd->current_fmt->code ||
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vb->width != icd->user_width ||
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vb->height != icd->user_height ||
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vb->field != field) {
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buf->code = icd->current_fmt->code;
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vb->width = icd->user_width;
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vb->height = icd->user_height;
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vb->field = field;
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vb->state = VIDEOBUF_NEEDS_INIT;
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}
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vb->size = icd->sizeimage;
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if (0 != vb->baddr && vb->bsize < vb->size) {
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ret = -EINVAL;
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goto out;
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}
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if (vb->state == VIDEOBUF_NEEDS_INIT) {
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ret = videobuf_iolock(vq, vb, NULL);
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if (ret)
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goto fail;
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vb->state = VIDEOBUF_PREPARED;
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}
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buf->inwork = 0;
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return 0;
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fail:
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free_buffer(vq, buf);
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out:
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buf->inwork = 0;
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return ret;
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}
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static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev)
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{
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struct videobuf_buffer *vbuf = &pcdev->active->vb;
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struct device *dev = pcdev->soc_host.icd->parent;
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int ret;
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if (unlikely(!pcdev->active)) {
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dev_err(dev, "DMA End IRQ with no active buffer\n");
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return -EFAULT;
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}
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/* setup sg list for future DMA */
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ret = imx_dma_setup_single(pcdev->dma_chan,
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videobuf_to_dma_contig(vbuf),
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vbuf->size, pcdev->res->start +
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CSIRXR, DMA_MODE_READ);
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if (unlikely(ret))
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dev_err(dev, "Failed to setup DMA sg list\n");
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return ret;
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}
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/* Called under spinlock_irqsave(&pcdev->lock, ...) */
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static void mx1_videobuf_queue(struct videobuf_queue *vq,
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struct videobuf_buffer *vb)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
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struct mx1_camera_dev *pcdev = ici->priv;
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struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
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dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
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vb, vb->baddr, vb->bsize);
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list_add_tail(&vb->queue, &pcdev->capture);
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vb->state = VIDEOBUF_ACTIVE;
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if (!pcdev->active) {
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pcdev->active = buf;
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/* setup sg list for future DMA */
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if (!mx1_camera_setup_dma(pcdev)) {
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unsigned int temp;
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/* enable SOF irq */
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temp = __raw_readl(pcdev->base + CSICR1) |
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CSICR1_SOF_INTEN;
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__raw_writel(temp, pcdev->base + CSICR1);
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}
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}
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}
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static void mx1_videobuf_release(struct videobuf_queue *vq,
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struct videobuf_buffer *vb)
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{
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struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
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#ifdef DEBUG
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struct soc_camera_device *icd = vq->priv_data;
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struct device *dev = icd->parent;
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dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
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vb, vb->baddr, vb->bsize);
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switch (vb->state) {
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case VIDEOBUF_ACTIVE:
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dev_dbg(dev, "%s (active)\n", __func__);
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break;
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case VIDEOBUF_QUEUED:
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dev_dbg(dev, "%s (queued)\n", __func__);
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break;
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case VIDEOBUF_PREPARED:
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dev_dbg(dev, "%s (prepared)\n", __func__);
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break;
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default:
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dev_dbg(dev, "%s (unknown)\n", __func__);
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break;
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}
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#endif
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free_buffer(vq, buf);
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}
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static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
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struct videobuf_buffer *vb,
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struct mx1_buffer *buf)
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{
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/* _init is used to debug races, see comment in mx1_camera_reqbufs() */
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list_del_init(&vb->queue);
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vb->state = VIDEOBUF_DONE;
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v4l2_get_timestamp(&vb->ts);
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vb->field_count++;
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wake_up(&vb->done);
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if (list_empty(&pcdev->capture)) {
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pcdev->active = NULL;
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return;
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}
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pcdev->active = list_entry(pcdev->capture.next,
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struct mx1_buffer, vb.queue);
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/* setup sg list for future DMA */
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if (likely(!mx1_camera_setup_dma(pcdev))) {
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unsigned int temp;
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/* enable SOF irq */
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temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN;
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__raw_writel(temp, pcdev->base + CSICR1);
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}
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}
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static void mx1_camera_dma_irq(int channel, void *data)
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{
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struct mx1_camera_dev *pcdev = data;
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struct device *dev = pcdev->soc_host.icd->parent;
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struct mx1_buffer *buf;
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struct videobuf_buffer *vb;
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unsigned long flags;
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spin_lock_irqsave(&pcdev->lock, flags);
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imx_dma_disable(channel);
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if (unlikely(!pcdev->active)) {
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dev_err(dev, "DMA End IRQ with no active buffer\n");
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goto out;
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}
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vb = &pcdev->active->vb;
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buf = container_of(vb, struct mx1_buffer, vb);
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WARN_ON(buf->inwork || list_empty(&vb->queue));
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dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
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vb, vb->baddr, vb->bsize);
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mx1_camera_wakeup(pcdev, vb, buf);
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out:
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spin_unlock_irqrestore(&pcdev->lock, flags);
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}
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static struct videobuf_queue_ops mx1_videobuf_ops = {
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.buf_setup = mx1_videobuf_setup,
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.buf_prepare = mx1_videobuf_prepare,
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.buf_queue = mx1_videobuf_queue,
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.buf_release = mx1_videobuf_release,
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};
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static void mx1_camera_init_videobuf(struct videobuf_queue *q,
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struct soc_camera_device *icd)
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{
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struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
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struct mx1_camera_dev *pcdev = ici->priv;
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videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->parent,
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&pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
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V4L2_FIELD_NONE,
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sizeof(struct mx1_buffer), icd, &ici->host_lock);
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}
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static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
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{
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unsigned int mclk = pcdev->mclk;
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unsigned long div;
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unsigned long lcdclk;
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lcdclk = clk_get_rate(pcdev->clk);
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/*
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* We verify platform_mclk_10khz != 0, so if anyone breaks it, here
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* they get a nice Oops
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*/
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div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
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dev_dbg(pcdev->soc_host.icd->parent,
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"System clock %lukHz, target freq %dkHz, divisor %lu\n",
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lcdclk / 1000, mclk / 1000, div);
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return div;
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}
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static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
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{
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unsigned int csicr1 = CSICR1_EN;
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dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Activate device\n");
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clk_prepare_enable(pcdev->clk);
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/* enable CSI before doing anything else */
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__raw_writel(csicr1, pcdev->base + CSICR1);
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csicr1 |= CSICR1_MCLKEN | CSICR1_FCC | CSICR1_GCLK_MODE;
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csicr1 |= CSICR1_MCLKDIV(mclk_get_divisor(pcdev));
|
||||
csicr1 |= CSICR1_RXFF_LEVEL(2); /* 16 words */
|
||||
|
||||
__raw_writel(csicr1, pcdev->base + CSICR1);
|
||||
}
|
||||
|
||||
static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
|
||||
{
|
||||
dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Deactivate device\n");
|
||||
|
||||
/* Disable all CSI interface */
|
||||
__raw_writel(0x00, pcdev->base + CSICR1);
|
||||
|
||||
clk_disable_unprepare(pcdev->clk);
|
||||
}
|
||||
|
||||
static int mx1_camera_add_device(struct soc_camera_device *icd)
|
||||
{
|
||||
dev_info(icd->parent, "MX1 Camera driver attached to camera %d\n",
|
||||
icd->devnum);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mx1_camera_remove_device(struct soc_camera_device *icd)
|
||||
{
|
||||
dev_info(icd->parent, "MX1 Camera driver detached from camera %d\n",
|
||||
icd->devnum);
|
||||
}
|
||||
|
||||
/*
|
||||
* The following two functions absolutely depend on the fact, that
|
||||
* there can be only one camera on i.MX1/i.MXL camera sensor interface
|
||||
*/
|
||||
static int mx1_camera_clock_start(struct soc_camera_host *ici)
|
||||
{
|
||||
struct mx1_camera_dev *pcdev = ici->priv;
|
||||
|
||||
mx1_camera_activate(pcdev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mx1_camera_clock_stop(struct soc_camera_host *ici)
|
||||
{
|
||||
struct mx1_camera_dev *pcdev = ici->priv;
|
||||
unsigned int csicr1;
|
||||
|
||||
/* disable interrupts */
|
||||
csicr1 = __raw_readl(pcdev->base + CSICR1) & ~CSI_IRQ_MASK;
|
||||
__raw_writel(csicr1, pcdev->base + CSICR1);
|
||||
|
||||
/* Stop DMA engine */
|
||||
imx_dma_disable(pcdev->dma_chan);
|
||||
|
||||
mx1_camera_deactivate(pcdev);
|
||||
}
|
||||
|
||||
static int mx1_camera_set_bus_param(struct soc_camera_device *icd)
|
||||
{
|
||||
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
|
||||
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
|
||||
struct mx1_camera_dev *pcdev = ici->priv;
|
||||
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
|
||||
unsigned long common_flags;
|
||||
unsigned int csicr1;
|
||||
int ret;
|
||||
|
||||
/* MX1 supports only 8bit buswidth */
|
||||
ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
|
||||
if (!ret) {
|
||||
common_flags = soc_mbus_config_compatible(&cfg, CSI_BUS_FLAGS);
|
||||
if (!common_flags) {
|
||||
dev_warn(icd->parent,
|
||||
"Flags incompatible: camera 0x%x, host 0x%x\n",
|
||||
cfg.flags, CSI_BUS_FLAGS);
|
||||
return -EINVAL;
|
||||
}
|
||||
} else if (ret != -ENOIOCTLCMD) {
|
||||
return ret;
|
||||
} else {
|
||||
common_flags = CSI_BUS_FLAGS;
|
||||
}
|
||||
|
||||
/* Make choises, based on platform choice */
|
||||
if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
|
||||
(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
|
||||
if (!pcdev->pdata ||
|
||||
pcdev->pdata->flags & MX1_CAMERA_VSYNC_HIGH)
|
||||
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
|
||||
else
|
||||
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
|
||||
}
|
||||
|
||||
if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) &&
|
||||
(common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) {
|
||||
if (!pcdev->pdata ||
|
||||
pcdev->pdata->flags & MX1_CAMERA_PCLK_RISING)
|
||||
common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING;
|
||||
else
|
||||
common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING;
|
||||
}
|
||||
|
||||
if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) &&
|
||||
(common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) {
|
||||
if (!pcdev->pdata ||
|
||||
pcdev->pdata->flags & MX1_CAMERA_DATA_HIGH)
|
||||
common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW;
|
||||
else
|
||||
common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH;
|
||||
}
|
||||
|
||||
cfg.flags = common_flags;
|
||||
ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
|
||||
if (ret < 0 && ret != -ENOIOCTLCMD) {
|
||||
dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n",
|
||||
common_flags, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
csicr1 = __raw_readl(pcdev->base + CSICR1);
|
||||
|
||||
if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
|
||||
csicr1 |= CSICR1_REDGE;
|
||||
if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
|
||||
csicr1 |= CSICR1_SOF_POL;
|
||||
if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)
|
||||
csicr1 |= CSICR1_DATA_POL;
|
||||
|
||||
__raw_writel(csicr1, pcdev->base + CSICR1);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mx1_camera_set_fmt(struct soc_camera_device *icd,
|
||||
struct v4l2_format *f)
|
||||
{
|
||||
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
|
||||
const struct soc_camera_format_xlate *xlate;
|
||||
struct v4l2_pix_format *pix = &f->fmt.pix;
|
||||
struct v4l2_mbus_framefmt mf;
|
||||
int ret, buswidth;
|
||||
|
||||
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
|
||||
if (!xlate) {
|
||||
dev_warn(icd->parent, "Format %x not found\n",
|
||||
pix->pixelformat);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
buswidth = xlate->host_fmt->bits_per_sample;
|
||||
if (buswidth > 8) {
|
||||
dev_warn(icd->parent,
|
||||
"bits-per-sample %d for format %x unsupported\n",
|
||||
buswidth, pix->pixelformat);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mf.width = pix->width;
|
||||
mf.height = pix->height;
|
||||
mf.field = pix->field;
|
||||
mf.colorspace = pix->colorspace;
|
||||
mf.code = xlate->code;
|
||||
|
||||
ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (mf.code != xlate->code)
|
||||
return -EINVAL;
|
||||
|
||||
pix->width = mf.width;
|
||||
pix->height = mf.height;
|
||||
pix->field = mf.field;
|
||||
pix->colorspace = mf.colorspace;
|
||||
icd->current_fmt = xlate;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mx1_camera_try_fmt(struct soc_camera_device *icd,
|
||||
struct v4l2_format *f)
|
||||
{
|
||||
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
|
||||
const struct soc_camera_format_xlate *xlate;
|
||||
struct v4l2_pix_format *pix = &f->fmt.pix;
|
||||
struct v4l2_mbus_framefmt mf;
|
||||
int ret;
|
||||
/* TODO: limit to mx1 hardware capabilities */
|
||||
|
||||
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
|
||||
if (!xlate) {
|
||||
dev_warn(icd->parent, "Format %x not found\n",
|
||||
pix->pixelformat);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mf.width = pix->width;
|
||||
mf.height = pix->height;
|
||||
mf.field = pix->field;
|
||||
mf.colorspace = pix->colorspace;
|
||||
mf.code = xlate->code;
|
||||
|
||||
/* limit to sensor capabilities */
|
||||
ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
pix->width = mf.width;
|
||||
pix->height = mf.height;
|
||||
pix->field = mf.field;
|
||||
pix->colorspace = mf.colorspace;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mx1_camera_reqbufs(struct soc_camera_device *icd,
|
||||
struct v4l2_requestbuffers *p)
|
||||
{
|
||||
int i;
|
||||
|
||||
/*
|
||||
* This is for locking debugging only. I removed spinlocks and now I
|
||||
* check whether .prepare is ever called on a linked buffer, or whether
|
||||
* a dma IRQ can occur for an in-work or unlinked buffer. Until now
|
||||
* it hadn't triggered
|
||||
*/
|
||||
for (i = 0; i < p->count; i++) {
|
||||
struct mx1_buffer *buf = container_of(icd->vb_vidq.bufs[i],
|
||||
struct mx1_buffer, vb);
|
||||
buf->inwork = 0;
|
||||
INIT_LIST_HEAD(&buf->vb.queue);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned int mx1_camera_poll(struct file *file, poll_table *pt)
|
||||
{
|
||||
struct soc_camera_device *icd = file->private_data;
|
||||
struct mx1_buffer *buf;
|
||||
|
||||
buf = list_entry(icd->vb_vidq.stream.next, struct mx1_buffer,
|
||||
vb.stream);
|
||||
|
||||
poll_wait(file, &buf->vb.done, pt);
|
||||
|
||||
if (buf->vb.state == VIDEOBUF_DONE ||
|
||||
buf->vb.state == VIDEOBUF_ERROR)
|
||||
return POLLIN | POLLRDNORM;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mx1_camera_querycap(struct soc_camera_host *ici,
|
||||
struct v4l2_capability *cap)
|
||||
{
|
||||
/* cap->name is set by the friendly caller:-> */
|
||||
strlcpy(cap->card, "i.MX1/i.MXL Camera", sizeof(cap->card));
|
||||
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct soc_camera_host_ops mx1_soc_camera_host_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.add = mx1_camera_add_device,
|
||||
.remove = mx1_camera_remove_device,
|
||||
.clock_start = mx1_camera_clock_start,
|
||||
.clock_stop = mx1_camera_clock_stop,
|
||||
.set_bus_param = mx1_camera_set_bus_param,
|
||||
.set_fmt = mx1_camera_set_fmt,
|
||||
.try_fmt = mx1_camera_try_fmt,
|
||||
.init_videobuf = mx1_camera_init_videobuf,
|
||||
.reqbufs = mx1_camera_reqbufs,
|
||||
.poll = mx1_camera_poll,
|
||||
.querycap = mx1_camera_querycap,
|
||||
};
|
||||
|
||||
static struct fiq_handler fh = {
|
||||
.name = "csi_sof"
|
||||
};
|
||||
|
||||
static int __init mx1_camera_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mx1_camera_dev *pcdev;
|
||||
struct resource *res;
|
||||
struct pt_regs regs;
|
||||
struct clk *clk;
|
||||
void __iomem *base;
|
||||
unsigned int irq;
|
||||
int err = 0;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (!res || (int)irq <= 0) {
|
||||
err = -ENODEV;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
clk = clk_get(&pdev->dev, "csi_clk");
|
||||
if (IS_ERR(clk)) {
|
||||
err = PTR_ERR(clk);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
|
||||
if (!pcdev) {
|
||||
dev_err(&pdev->dev, "Could not allocate pcdev\n");
|
||||
err = -ENOMEM;
|
||||
goto exit_put_clk;
|
||||
}
|
||||
|
||||
pcdev->res = res;
|
||||
pcdev->clk = clk;
|
||||
|
||||
pcdev->pdata = pdev->dev.platform_data;
|
||||
|
||||
if (pcdev->pdata)
|
||||
pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
|
||||
|
||||
if (!pcdev->mclk) {
|
||||
dev_warn(&pdev->dev,
|
||||
"mclk_10khz == 0! Please, fix your platform data. "
|
||||
"Using default 20MHz\n");
|
||||
pcdev->mclk = 20000000;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&pcdev->capture);
|
||||
spin_lock_init(&pcdev->lock);
|
||||
|
||||
/*
|
||||
* Request the regions.
|
||||
*/
|
||||
if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) {
|
||||
err = -EBUSY;
|
||||
goto exit_kfree;
|
||||
}
|
||||
|
||||
base = ioremap(res->start, resource_size(res));
|
||||
if (!base) {
|
||||
err = -ENOMEM;
|
||||
goto exit_release;
|
||||
}
|
||||
pcdev->irq = irq;
|
||||
pcdev->base = base;
|
||||
|
||||
/* request dma */
|
||||
pcdev->dma_chan = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_HIGH);
|
||||
if (pcdev->dma_chan < 0) {
|
||||
dev_err(&pdev->dev, "Can't request DMA for MX1 CSI\n");
|
||||
err = -EBUSY;
|
||||
goto exit_iounmap;
|
||||
}
|
||||
dev_dbg(&pdev->dev, "got DMA channel %d\n", pcdev->dma_chan);
|
||||
|
||||
imx_dma_setup_handlers(pcdev->dma_chan, mx1_camera_dma_irq, NULL,
|
||||
pcdev);
|
||||
|
||||
imx_dma_config_channel(pcdev->dma_chan, IMX_DMA_TYPE_FIFO,
|
||||
IMX_DMA_MEMSIZE_32, MX1_DMA_REQ_CSI_R, 0);
|
||||
/* burst length : 16 words = 64 bytes */
|
||||
imx_dma_config_burstlen(pcdev->dma_chan, 0);
|
||||
|
||||
/* request irq */
|
||||
err = claim_fiq(&fh);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "Camera interrupt register failed\n");
|
||||
goto exit_free_dma;
|
||||
}
|
||||
|
||||
set_fiq_handler(&mx1_camera_sof_fiq_start, &mx1_camera_sof_fiq_end -
|
||||
&mx1_camera_sof_fiq_start);
|
||||
|
||||
regs.ARM_r8 = (long)MX1_DMA_DIMR;
|
||||
regs.ARM_r9 = (long)MX1_DMA_CCR(pcdev->dma_chan);
|
||||
regs.ARM_r10 = (long)pcdev->base + CSICR1;
|
||||
regs.ARM_fp = (long)pcdev->base + CSISR;
|
||||
regs.ARM_sp = 1 << pcdev->dma_chan;
|
||||
set_fiq_regs(®s);
|
||||
|
||||
mxc_set_irq_fiq(irq, 1);
|
||||
enable_fiq(irq);
|
||||
|
||||
pcdev->soc_host.drv_name = DRIVER_NAME;
|
||||
pcdev->soc_host.ops = &mx1_soc_camera_host_ops;
|
||||
pcdev->soc_host.priv = pcdev;
|
||||
pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
|
||||
pcdev->soc_host.nr = pdev->id;
|
||||
err = soc_camera_host_register(&pcdev->soc_host);
|
||||
if (err)
|
||||
goto exit_free_irq;
|
||||
|
||||
dev_info(&pdev->dev, "MX1 Camera driver loaded\n");
|
||||
|
||||
return 0;
|
||||
|
||||
exit_free_irq:
|
||||
disable_fiq(irq);
|
||||
mxc_set_irq_fiq(irq, 0);
|
||||
release_fiq(&fh);
|
||||
exit_free_dma:
|
||||
imx_dma_free(pcdev->dma_chan);
|
||||
exit_iounmap:
|
||||
iounmap(base);
|
||||
exit_release:
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
exit_kfree:
|
||||
kfree(pcdev);
|
||||
exit_put_clk:
|
||||
clk_put(clk);
|
||||
exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __exit mx1_camera_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
|
||||
struct mx1_camera_dev *pcdev = container_of(soc_host,
|
||||
struct mx1_camera_dev, soc_host);
|
||||
struct resource *res;
|
||||
|
||||
imx_dma_free(pcdev->dma_chan);
|
||||
disable_fiq(pcdev->irq);
|
||||
mxc_set_irq_fiq(pcdev->irq, 0);
|
||||
release_fiq(&fh);
|
||||
|
||||
clk_put(pcdev->clk);
|
||||
|
||||
soc_camera_host_unregister(soc_host);
|
||||
|
||||
iounmap(pcdev->base);
|
||||
|
||||
res = pcdev->res;
|
||||
release_mem_region(res->start, resource_size(res));
|
||||
|
||||
kfree(pcdev);
|
||||
|
||||
dev_info(&pdev->dev, "MX1 Camera driver unloaded\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver mx1_camera_driver = {
|
||||
.driver = {
|
||||
.name = DRIVER_NAME,
|
||||
},
|
||||
.remove = __exit_p(mx1_camera_remove),
|
||||
};
|
||||
|
||||
module_platform_driver_probe(mx1_camera_driver, mx1_camera_probe);
|
||||
|
||||
MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver");
|
||||
MODULE_AUTHOR("Paulius Zaleckas <paulius.zaleckas@teltonika.lt>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_VERSION(DRIVER_VERSION);
|
||||
MODULE_ALIAS("platform:" DRIVER_NAME);
|
||||
Loading…
Add table
Add a link
Reference in a new issue