The mx1_camera driver has been broken for a few release cycles since commit 6bd0812 (dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c). It seems there is no one even compile tested it since then, as doing so will end up with the following error.
CC drivers/media/video/mx1_camera.o In file included from drivers/media/video/mx1_camera.c:44:0: arch/arm/mach-imx/include/mach/dma-mx1-mx2.h:8:25: fatal error: mach/dma-v1.h: No such file or directory It looks that all the related folks have known the breakage [1], but no one shows the interest to bring it back to work. Thus it becomes a piece of unmaintained code, so let's remove it. [1] https://lkml.org/lkml/2012/2/9/171 Signed-off-by: Shawn Guo <shawn....@linaro.org> Cc: Paulius Zaleckas <paulius.zalec...@teltonika.lt> Cc: Guennadi Liakhovetski <g.liakhovet...@gmx.de> Cc: linux-media@vger.kernel.org --- arch/arm/mach-imx/Makefile | 3 - arch/arm/mach-imx/clk-imx1.c | 1 - arch/arm/mach-imx/devices/Kconfig | 3 - arch/arm/mach-imx/devices/Makefile | 1 - arch/arm/mach-imx/devices/devices-common.h | 10 - arch/arm/mach-imx/devices/platform-mx1-camera.c | 42 -- arch/arm/mach-imx/mx1-camera-fiq-ksym.c | 18 - arch/arm/mach-imx/mx1-camera-fiq.S | 35 - drivers/media/video/Kconfig | 12 - drivers/media/video/Makefile | 1 - drivers/media/video/mx1_camera.c | 889 ----------------------- include/linux/platform_data/camera-mx1.h | 35 - 12 files changed, 1050 deletions(-) delete mode 100644 arch/arm/mach-imx/devices/platform-mx1-camera.c delete mode 100644 arch/arm/mach-imx/mx1-camera-fiq-ksym.c delete mode 100644 arch/arm/mach-imx/mx1-camera-fiq.S delete mode 100644 drivers/media/video/mx1_camera.c delete mode 100644 include/linux/platform_data/camera-mx1.h diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index fe47b71..538d0ee 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -35,9 +35,6 @@ obj-y += ssi-fiq.o obj-y += ssi-fiq-ksym.o endif -# Support for CMOS sensor interface -obj-$(CONFIG_MX1_VIDEO) += mx1-camera-fiq.o mx1-camera-fiq-ksym.o - # i.MX1 based machines obj-$(CONFIG_ARCH_MX1ADS) += mach-mx1ads.o obj-$(CONFIG_MACH_SCB9328) += mach-scb9328.o diff --git a/arch/arm/mach-imx/clk-imx1.c b/arch/arm/mach-imx/clk-imx1.c index b5f90cc..ebfffd2 100644 --- a/arch/arm/mach-imx/clk-imx1.c +++ b/arch/arm/mach-imx/clk-imx1.c @@ -84,7 +84,6 @@ int __init mx1_clocks_init(unsigned long fref) i, PTR_ERR(clk[i])); clk_register_clkdev(clk[dma_gate], "ahb", "imx-dma"); - clk_register_clkdev(clk[csi_gate], NULL, "mx1-camera.0"); clk_register_clkdev(clk[mma_gate], "mma", NULL); clk_register_clkdev(clk[usbd_gate], NULL, "imx_udc.0"); clk_register_clkdev(clk[per1], "per", "imx-gpt.0"); diff --git a/arch/arm/mach-imx/devices/Kconfig b/arch/arm/mach-imx/devices/Kconfig index cb3e3ee..09d796e 100644 --- a/arch/arm/mach-imx/devices/Kconfig +++ b/arch/arm/mach-imx/devices/Kconfig @@ -46,9 +46,6 @@ config IMX_HAVE_PLATFORM_IMX_UDC config IMX_HAVE_PLATFORM_IPU_CORE bool -config IMX_HAVE_PLATFORM_MX1_CAMERA - bool - config IMX_HAVE_PLATFORM_MX2_CAMERA bool diff --git a/arch/arm/mach-imx/devices/Makefile b/arch/arm/mach-imx/devices/Makefile index ff22ed1..3cfdc37 100644 --- a/arch/arm/mach-imx/devices/Makefile +++ b/arch/arm/mach-imx/devices/Makefile @@ -17,7 +17,6 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_SSI) += platform-imx-ssi.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UART) += platform-imx-uart.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_UDC) += platform-imx_udc.o obj-$(CONFIG_IMX_HAVE_PLATFORM_IPU_CORE) += platform-ipu-core.o -obj-$(CONFIG_IMX_HAVE_PLATFORM_MX1_CAMERA) += platform-mx1-camera.o obj-$(CONFIG_IMX_HAVE_PLATFORM_MX2_CAMERA) += platform-mx2-camera.o obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_EHCI) += platform-mxc-ehci.o obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_MMC) += platform-mxc-mmc.o diff --git a/arch/arm/mach-imx/devices/devices-common.h b/arch/arm/mach-imx/devices/devices-common.h index 9e3e3d8..34419b2 100644 --- a/arch/arm/mach-imx/devices/devices-common.h +++ b/arch/arm/mach-imx/devices/devices-common.h @@ -199,16 +199,6 @@ struct platform_device *__init imx_add_mx3_sdc_fb( const struct imx_ipu_core_data *data, struct mx3fb_platform_data *pdata); -#include <linux/platform_data/camera-mx1.h> -struct imx_mx1_camera_data { - resource_size_t iobase; - resource_size_t iosize; - resource_size_t irq; -}; -struct platform_device *__init imx_add_mx1_camera( - const struct imx_mx1_camera_data *data, - const struct mx1_camera_pdata *pdata); - #include <linux/platform_data/camera-mx2.h> struct imx_mx2_camera_data { resource_size_t iobasecsi; diff --git a/arch/arm/mach-imx/devices/platform-mx1-camera.c b/arch/arm/mach-imx/devices/platform-mx1-camera.c deleted file mode 100644 index 756b0e6..0000000 --- a/arch/arm/mach-imx/devices/platform-mx1-camera.c +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Copyright (C) 2010 Pengutronix - * Uwe Kleine-Koenig <u.kleine-koe...@pengutronix.de> - * - * This program is free software; you can redistribute it and/or modify it under - * the terms of the GNU General Public License version 2 as published by the - * Free Software Foundation. - */ -#include <mach/hardware.h> -#include "devices-common.h" - -#define imx_mx1_camera_data_entry_single(soc, _size) \ - { \ - .iobase = soc ## _CSI ## _BASE_ADDR, \ - .iosize = _size, \ - .irq = soc ## _INT_CSI, \ - } - -#ifdef CONFIG_SOC_IMX1 -const struct imx_mx1_camera_data imx1_mx1_camera_data __initconst = - imx_mx1_camera_data_entry_single(MX1, 10); -#endif /* ifdef CONFIG_SOC_IMX1 */ - -struct platform_device *__init imx_add_mx1_camera( - const struct imx_mx1_camera_data *data, - const struct mx1_camera_pdata *pdata) -{ - struct resource res[] = { - { - .start = data->iobase, - .end = data->iobase + data->iosize - 1, - .flags = IORESOURCE_MEM, - }, { - .start = data->irq, - .end = data->irq, - .flags = IORESOURCE_IRQ, - }, - }; - return imx_add_platform_device_dmamask("mx1-camera", 0, - res, ARRAY_SIZE(res), - pdata, sizeof(*pdata), DMA_BIT_MASK(32)); -} diff --git a/arch/arm/mach-imx/mx1-camera-fiq-ksym.c b/arch/arm/mach-imx/mx1-camera-fiq-ksym.c deleted file mode 100644 index fb38436..0000000 --- a/arch/arm/mach-imx/mx1-camera-fiq-ksym.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * Exported ksyms of ARCH_MX1 - * - * Copyright (C) 2008, Darius Augulis <augulis.dar...@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/platform_device.h> -#include <linux/module.h> - -#include <linux/platform_data/camera-mx1.h> - -/* IMX camera FIQ handler */ -EXPORT_SYMBOL(mx1_camera_sof_fiq_start); -EXPORT_SYMBOL(mx1_camera_sof_fiq_end); diff --git a/arch/arm/mach-imx/mx1-camera-fiq.S b/arch/arm/mach-imx/mx1-camera-fiq.S deleted file mode 100644 index 9c69aa6..0000000 --- a/arch/arm/mach-imx/mx1-camera-fiq.S +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Copyright (C) 2008 Paulius Zaleckas <paulius.zalec...@teltonika.lt> - * - * Based on linux/arch/arm/lib/floppydma.S - * Copyright (C) 1995, 1996 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/linkage.h> -#include <asm/assembler.h> - - .text - .global mx1_camera_sof_fiq_end - .global mx1_camera_sof_fiq_start -mx1_camera_sof_fiq_start: - @ enable dma - ldr r12, [r9] - orr r12, r12, #0x00000001 - str r12, [r9] - @ unmask DMA interrupt - ldr r12, [r8] - bic r12, r12, r13 - str r12, [r8] - @ disable SOF interrupt - ldr r12, [r10] - bic r12, r12, #0x00010000 - str r12, [r10] - @ clear SOF flag - mov r12, #0x00010000 - str r12, [r11] - @ return from FIQ - subs pc, lr, #4 -mx1_camera_sof_fiq_end: diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index c128fac..e8b89a9 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -1118,18 +1118,6 @@ config SOC_CAMERA_OV9740 help This is a ov9740 camera driver -config MX1_VIDEO - bool - -config VIDEO_MX1 - tristate "i.MX1/i.MXL CMOS Sensor Interface driver" - depends on VIDEO_DEV && ARCH_MX1 && SOC_CAMERA - select FIQ - select VIDEOBUF_DMA_CONTIG - select MX1_VIDEO - ---help--- - This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface - config MX3_VIDEO bool diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index b7da9fa..8624228 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -178,7 +178,6 @@ obj-$(CONFIG_VIDEO_OMAP2) += omap2cam.o obj-$(CONFIG_SOC_CAMERA) += soc_camera.o soc_mediabus.o obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o # soc-camera host drivers have to be linked after camera drivers -obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o diff --git a/drivers/media/video/mx1_camera.c b/drivers/media/video/mx1_camera.c deleted file mode 100644 index bbe7099..0000000 --- a/drivers/media/video/mx1_camera.c +++ /dev/null @@ -1,889 +0,0 @@ -/* - * V4L2 Driver for i.MXL/i.MXL camera (CSI) host - * - * Copyright (C) 2008, Paulius Zaleckas <paulius.zalec...@teltonika.lt> - * Copyright (C) 2009, Darius Augulis <augulis.dar...@gmail.com> - * - * Based on PXA SoC camera driver - * Copyright (C) 2006, Sascha Hauer, Pengutronix - * Copyright (C) 2008, Guennadi Liakhovetski <ker...@pengutronix.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/mutex.h> -#include <linux/platform_device.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/time.h> -#include <linux/videodev2.h> - -#include <media/soc_camera.h> -#include <media/v4l2-common.h> -#include <media/v4l2-dev.h> -#include <media/videobuf-dma-contig.h> -#include <media/soc_mediabus.h> - -#include <asm/dma.h> -#include <asm/fiq.h> -#include <mach/dma-mx1-mx2.h> -#include <mach/hardware.h> -#include <mach/irqs.h> -#include <linux/platform_data/camera-mx1.h> - -/* - * CSI registers - */ -#define CSICR1 0x00 /* CSI Control Register 1 */ -#define CSISR 0x08 /* CSI Status Register */ -#define CSIRXR 0x10 /* CSI RxFIFO Register */ - -#define CSICR1_RXFF_LEVEL(x) (((x) & 0x3) << 19) -#define CSICR1_SOF_POL (1 << 17) -#define CSICR1_SOF_INTEN (1 << 16) -#define CSICR1_MCLKDIV(x) (((x) & 0xf) << 12) -#define CSICR1_MCLKEN (1 << 9) -#define CSICR1_FCC (1 << 8) -#define CSICR1_BIG_ENDIAN (1 << 7) -#define CSICR1_CLR_RXFIFO (1 << 5) -#define CSICR1_GCLK_MODE (1 << 4) -#define CSICR1_DATA_POL (1 << 2) -#define CSICR1_REDGE (1 << 1) -#define CSICR1_EN (1 << 0) - -#define CSISR_SFF_OR_INT (1 << 25) -#define CSISR_RFF_OR_INT (1 << 24) -#define CSISR_STATFF_INT (1 << 21) -#define CSISR_RXFF_INT (1 << 18) -#define CSISR_SOF_INT (1 << 16) -#define CSISR_DRDY (1 << 0) - -#define DRIVER_VERSION "0.0.2" -#define DRIVER_NAME "mx1-camera" - -#define CSI_IRQ_MASK (CSISR_SFF_OR_INT | CSISR_RFF_OR_INT | \ - CSISR_STATFF_INT | CSISR_RXFF_INT | CSISR_SOF_INT) - -#define CSI_BUS_FLAGS (V4L2_MBUS_MASTER | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ - V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ - V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | \ - V4L2_MBUS_DATA_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_LOW) - -#define MAX_VIDEO_MEM 16 /* Video memory limit in megabytes */ - -/* - * Structures - */ - -/* buffer for one video frame */ -struct mx1_buffer { - /* common v4l buffer stuff -- must be first */ - struct videobuf_buffer vb; - enum v4l2_mbus_pixelcode code; - int inwork; -}; - -/* - * i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor - * Interface. If anyone ever builds hardware to enable more than - * one camera, they will have to modify this driver too - */ -struct mx1_camera_dev { - struct soc_camera_host soc_host; - struct soc_camera_device *icd; - struct mx1_camera_pdata *pdata; - struct mx1_buffer *active; - struct resource *res; - struct clk *clk; - struct list_head capture; - - void __iomem *base; - int dma_chan; - unsigned int irq; - unsigned long mclk; - - spinlock_t lock; -}; - -/* - * Videobuf operations - */ -static int mx1_videobuf_setup(struct videobuf_queue *vq, unsigned int *count, - unsigned int *size) -{ - struct soc_camera_device *icd = vq->priv_data; - - *size = icd->sizeimage; - - if (!*count) - *count = 32; - - if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024) - *count = (MAX_VIDEO_MEM * 1024 * 1024) / *size; - - dev_dbg(icd->parent, "count=%d, size=%d\n", *count, *size); - - return 0; -} - -static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf) -{ - struct soc_camera_device *icd = vq->priv_data; - struct videobuf_buffer *vb = &buf->vb; - - BUG_ON(in_interrupt()); - - dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, - vb, vb->baddr, vb->bsize); - - /* - * This waits until this buffer is out of danger, i.e., until it is no - * longer in STATE_QUEUED or STATE_ACTIVE - */ - videobuf_waiton(vq, vb, 0, 0); - videobuf_dma_contig_free(vq, vb); - - vb->state = VIDEOBUF_NEEDS_INIT; -} - -static int mx1_videobuf_prepare(struct videobuf_queue *vq, - struct videobuf_buffer *vb, enum v4l2_field field) -{ - struct soc_camera_device *icd = vq->priv_data; - struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb); - int ret; - - dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, - vb, vb->baddr, vb->bsize); - - /* Added list head initialization on alloc */ - WARN_ON(!list_empty(&vb->queue)); - - BUG_ON(NULL == icd->current_fmt); - - /* - * I think, in buf_prepare you only have to protect global data, - * the actual buffer is yours - */ - buf->inwork = 1; - - if (buf->code != icd->current_fmt->code || - vb->width != icd->user_width || - vb->height != icd->user_height || - vb->field != field) { - buf->code = icd->current_fmt->code; - vb->width = icd->user_width; - vb->height = icd->user_height; - vb->field = field; - vb->state = VIDEOBUF_NEEDS_INIT; - } - - vb->size = icd->sizeimage; - if (0 != vb->baddr && vb->bsize < vb->size) { - ret = -EINVAL; - goto out; - } - - if (vb->state == VIDEOBUF_NEEDS_INIT) { - ret = videobuf_iolock(vq, vb, NULL); - if (ret) - goto fail; - - vb->state = VIDEOBUF_PREPARED; - } - - buf->inwork = 0; - - return 0; - -fail: - free_buffer(vq, buf); -out: - buf->inwork = 0; - return ret; -} - -static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev) -{ - struct videobuf_buffer *vbuf = &pcdev->active->vb; - struct device *dev = pcdev->icd->parent; - int ret; - - if (unlikely(!pcdev->active)) { - dev_err(dev, "DMA End IRQ with no active buffer\n"); - return -EFAULT; - } - - /* setup sg list for future DMA */ - ret = imx_dma_setup_single(pcdev->dma_chan, - videobuf_to_dma_contig(vbuf), - vbuf->size, pcdev->res->start + - CSIRXR, DMA_MODE_READ); - if (unlikely(ret)) - dev_err(dev, "Failed to setup DMA sg list\n"); - - return ret; -} - -/* Called under spinlock_irqsave(&pcdev->lock, ...) */ -static void mx1_videobuf_queue(struct videobuf_queue *vq, - struct videobuf_buffer *vb) -{ - struct soc_camera_device *icd = vq->priv_data; - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx1_camera_dev *pcdev = ici->priv; - struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb); - - dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, - vb, vb->baddr, vb->bsize); - - list_add_tail(&vb->queue, &pcdev->capture); - - vb->state = VIDEOBUF_ACTIVE; - - if (!pcdev->active) { - pcdev->active = buf; - - /* setup sg list for future DMA */ - if (!mx1_camera_setup_dma(pcdev)) { - unsigned int temp; - /* enable SOF irq */ - temp = __raw_readl(pcdev->base + CSICR1) | - CSICR1_SOF_INTEN; - __raw_writel(temp, pcdev->base + CSICR1); - } - } -} - -static void mx1_videobuf_release(struct videobuf_queue *vq, - struct videobuf_buffer *vb) -{ - struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb); -#ifdef DEBUG - struct soc_camera_device *icd = vq->priv_data; - struct device *dev = icd->parent; - - dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, - vb, vb->baddr, vb->bsize); - - switch (vb->state) { - case VIDEOBUF_ACTIVE: - dev_dbg(dev, "%s (active)\n", __func__); - break; - case VIDEOBUF_QUEUED: - dev_dbg(dev, "%s (queued)\n", __func__); - break; - case VIDEOBUF_PREPARED: - dev_dbg(dev, "%s (prepared)\n", __func__); - break; - default: - dev_dbg(dev, "%s (unknown)\n", __func__); - break; - } -#endif - - free_buffer(vq, buf); -} - -static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev, - struct videobuf_buffer *vb, - struct mx1_buffer *buf) -{ - /* _init is used to debug races, see comment in mx1_camera_reqbufs() */ - list_del_init(&vb->queue); - vb->state = VIDEOBUF_DONE; - do_gettimeofday(&vb->ts); - vb->field_count++; - wake_up(&vb->done); - - if (list_empty(&pcdev->capture)) { - pcdev->active = NULL; - return; - } - - pcdev->active = list_entry(pcdev->capture.next, - struct mx1_buffer, vb.queue); - - /* setup sg list for future DMA */ - if (likely(!mx1_camera_setup_dma(pcdev))) { - unsigned int temp; - - /* enable SOF irq */ - temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN; - __raw_writel(temp, pcdev->base + CSICR1); - } -} - -static void mx1_camera_dma_irq(int channel, void *data) -{ - struct mx1_camera_dev *pcdev = data; - struct device *dev = pcdev->icd->parent; - struct mx1_buffer *buf; - struct videobuf_buffer *vb; - unsigned long flags; - - spin_lock_irqsave(&pcdev->lock, flags); - - imx_dma_disable(channel); - - if (unlikely(!pcdev->active)) { - dev_err(dev, "DMA End IRQ with no active buffer\n"); - goto out; - } - - vb = &pcdev->active->vb; - buf = container_of(vb, struct mx1_buffer, vb); - WARN_ON(buf->inwork || list_empty(&vb->queue)); - dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, - vb, vb->baddr, vb->bsize); - - mx1_camera_wakeup(pcdev, vb, buf); -out: - spin_unlock_irqrestore(&pcdev->lock, flags); -} - -static struct videobuf_queue_ops mx1_videobuf_ops = { - .buf_setup = mx1_videobuf_setup, - .buf_prepare = mx1_videobuf_prepare, - .buf_queue = mx1_videobuf_queue, - .buf_release = mx1_videobuf_release, -}; - -static void mx1_camera_init_videobuf(struct videobuf_queue *q, - struct soc_camera_device *icd) -{ - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx1_camera_dev *pcdev = ici->priv; - - videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->parent, - &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_NONE, - sizeof(struct mx1_buffer), icd, &icd->video_lock); -} - -static int mclk_get_divisor(struct mx1_camera_dev *pcdev) -{ - unsigned int mclk = pcdev->mclk; - unsigned long div; - unsigned long lcdclk; - - lcdclk = clk_get_rate(pcdev->clk); - - /* - * We verify platform_mclk_10khz != 0, so if anyone breaks it, here - * they get a nice Oops - */ - div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1; - - dev_dbg(pcdev->icd->parent, - "System clock %lukHz, target freq %dkHz, divisor %lu\n", - lcdclk / 1000, mclk / 1000, div); - - return div; -} - -static void mx1_camera_activate(struct mx1_camera_dev *pcdev) -{ - unsigned int csicr1 = CSICR1_EN; - - dev_dbg(pcdev->icd->parent, "Activate device\n"); - - clk_prepare_enable(pcdev->clk); - - /* enable CSI before doing anything else */ - __raw_writel(csicr1, pcdev->base + CSICR1); - - csicr1 |= CSICR1_MCLKEN | CSICR1_FCC | CSICR1_GCLK_MODE; - 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->icd->parent, "Deactivate device\n"); - - /* Disable all CSI interface */ - __raw_writel(0x00, pcdev->base + CSICR1); - - clk_disable_unprepare(pcdev->clk); -} - -/* - * 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_add_device(struct soc_camera_device *icd) -{ - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx1_camera_dev *pcdev = ici->priv; - - if (pcdev->icd) - return -EBUSY; - - dev_info(icd->parent, "MX1 Camera driver attached to camera %d\n", - icd->devnum); - - mx1_camera_activate(pcdev); - - pcdev->icd = icd; - - return 0; -} - -static void mx1_camera_remove_device(struct soc_camera_device *icd) -{ - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx1_camera_dev *pcdev = ici->priv; - unsigned int csicr1; - - BUG_ON(icd != pcdev->icd); - - /* 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); - - dev_info(icd->parent, "MX1 Camera driver detached from camera %d\n", - icd->devnum); - - mx1_camera_deactivate(pcdev); - - pcdev->icd = NULL; -} - -static int mx1_camera_set_crop(struct soc_camera_device *icd, - struct v4l2_crop *a) -{ - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - - return v4l2_subdev_call(sd, video, s_crop, a); -} - -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, - .set_bus_param = mx1_camera_set_bus_param, - .set_crop = mx1_camera_set_crop, - .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), -}; - -static int __init mx1_camera_init(void) -{ - return platform_driver_probe(&mx1_camera_driver, mx1_camera_probe); -} - -static void __exit mx1_camera_exit(void) -{ - return platform_driver_unregister(&mx1_camera_driver); -} - -module_init(mx1_camera_init); -module_exit(mx1_camera_exit); - -MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver"); -MODULE_AUTHOR("Paulius Zaleckas <paulius.zalec...@teltonika.lt>"); -MODULE_LICENSE("GPL v2"); -MODULE_VERSION(DRIVER_VERSION); -MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/include/linux/platform_data/camera-mx1.h b/include/linux/platform_data/camera-mx1.h deleted file mode 100644 index 4fd6c70..0000000 --- a/include/linux/platform_data/camera-mx1.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * mx1_camera.h - i.MX1/i.MXL camera driver header file - * - * Copyright (c) 2008, Paulius Zaleckas <paulius.zalec...@teltonika.lt> - * Copyright (C) 2009, Darius Augulis <augulis.dar...@gmail.com> - * - * Based on PXA camera.h file: - * Copyright (C) 2003, Intel Corporation - * Copyright (C) 2008, Guennadi Liakhovetski <ker...@pengutronix.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#ifndef __ASM_ARCH_CAMERA_H_ -#define __ASM_ARCH_CAMERA_H_ - -#define MX1_CAMERA_DATA_HIGH 1 -#define MX1_CAMERA_PCLK_RISING 2 -#define MX1_CAMERA_VSYNC_HIGH 4 - -extern unsigned char mx1_camera_sof_fiq_start, mx1_camera_sof_fiq_end; - -/** - * struct mx1_camera_pdata - i.MX1/i.MXL camera platform data - * @mclk_10khz: master clock frequency in 10kHz units - * @flags: MX1 camera platform flags - */ -struct mx1_camera_pdata { - unsigned long mclk_10khz; - unsigned long flags; -}; - -#endif /* __ASM_ARCH_CAMERA_H_ */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
