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V4L/DVB (11350): Add camera (CSI) driver for MX1

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Add support for CMOS Sensor Interface on i.MX1 and i.MXL SoCs.

 create mode 100644 arch/arm/mach-mx1/ksym_mx1.c
 create mode 100644 arch/arm/mach-mx1/mx1_camera_fiq.S
 create mode 100644 arch/arm/plat-mxc/include/mach/mx1_camera.h
 create mode 100644 drivers/media/video/mx1_camera.c

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Paulius Zaleckas
2009-04-03 10:34:05 -03:00
committed by Mauro Carvalho Chehab
parent b71df97a3f
commit 6acc81c394
9 changed files with 940 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/mach-mx1/Makefile
+3
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@@ -6,6 +6,9 @@
obj-y += generic.o clock.o devices.o
# Support for CMOS sensor interface
obj-$(CONFIG_MX1_VIDEO) += ksym_mx1.o mx1_camera_fiq.o
# Specific board support
obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o
obj-$(CONFIG_MACH_SCB9328) += scb9328.o
arch/arm/mach-mx1/devices.c
+1 -1
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@@ -44,7 +44,7 @@ static struct resource imx_csi_resources[] = {
static u64 imx_csi_dmamask = 0xffffffffUL;
struct platform_device imx_csi_device = {
.name = "imx-csi",
.name = "mx1-camera",
.id = 0, /* This is used to put cameras on this interface */
.dev = {
.dma_mask = &imx_csi_dmamask,
arch/arm/mach-mx1/ksym_mx1.c
+18
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@@ -0,0 +1,18 @@
/*
* Exported ksyms of ARCH_MX1
*
* Copyright (C) 2008, Darius Augulis <augulis.darius@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 <mach/mx1_camera.h>
/* IMX camera FIQ handler */
EXPORT_SYMBOL(mx1_camera_sof_fiq_start);
EXPORT_SYMBOL(mx1_camera_sof_fiq_end);
arch/arm/mach-mx1/mx1_camera_fiq.S
+35
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@@ -0,0 +1,35 @@
/*
* Copyright (C) 2008 Paulius Zaleckas <paulius.zaleckas@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:
arch/arm/plat-mxc/include/mach/memory.h
+8
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@@ -24,4 +24,12 @@
#define PHYS_OFFSET UL(0x80000000)
#endif
#if defined(CONFIG_MX1_VIDEO)
/*
* Increase size of DMA-consistent memory region.
* This is required for i.MX camera driver to capture at least four VGA frames.
*/
#define CONSISTENT_DMA_SIZE SZ_4M
#endif /* CONFIG_MX1_VIDEO */
#endif /* __ASM_ARCH_MXC_MEMORY_H__ */
arch/arm/plat-mxc/include/mach/mx1_camera.h
+35
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@@ -0,0 +1,35 @@
/*
* mx1_camera.h - i.MX1/i.MXL camera driver header file
*
* Copyright (c) 2008, Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
* Copyright (C) 2009, Darius Augulis <augulis.darius@gmail.com>
*
* Based on PXA camera.h file:
* Copyright (C) 2003, Intel Corporation
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@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_ */
drivers/media/video/Kconfig
+12 -1
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@@ -746,6 +746,18 @@ config SOC_CAMERA_OV772X
help
This is a ov772x 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 VIDEO_MX3
tristate "i.MX3x Camera Sensor Interface driver"
depends on VIDEO_DEV && MX3_IPU && SOC_CAMERA
@@ -904,5 +916,4 @@ config USB_S2255
This driver can be compiled as a module, called s2255drv.
endif # V4L_USB_DRIVERS
endif # VIDEO_CAPTURE_DRIVERS
drivers/media/video/Makefile
+1
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@@ -133,6 +133,7 @@ obj-$(CONFIG_VIDEO_CX18) += cx18/
obj-$(CONFIG_VIDEO_VIVI) += vivi.o
obj-$(CONFIG_VIDEO_CX23885) += cx23885/
obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o
obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o
obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
drivers/media/video/mx1_camera.c
+827
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