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authorPaulius Zaleckas <paulius.zaleckas@teltonika.lt>2009-04-03 09:34:05 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-04-06 20:43:58 -0400
commit6acc81c394393b853e731cc67f17ef277d521123 (patch)
tree62d2c852d4a8a63be7c552339774e5df2443ebb2 /arch
parentb71df97a3ffdb2bfc286c3fa0c2b1a0aa3a6bf88 (diff)
V4L/DVB (11350): Add camera (CSI) driver for MX1
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-mx1/Makefile3
-rw-r--r--arch/arm/mach-mx1/devices.c2
-rw-r--r--arch/arm/mach-mx1/ksym_mx1.c18
-rw-r--r--arch/arm/mach-mx1/mx1_camera_fiq.S35
-rw-r--r--arch/arm/plat-mxc/include/mach/memory.h8
-rw-r--r--arch/arm/plat-mxc/include/mach/mx1_camera.h35
6 files changed, 100 insertions, 1 deletions
diff --git a/arch/arm/mach-mx1/Makefile b/arch/arm/mach-mx1/Makefile
index 82f1309568ef..7f86fe073ec6 100644
--- a/arch/arm/mach-mx1/Makefile
+++ b/arch/arm/mach-mx1/Makefile
@@ -6,6 +6,9 @@
6 6
7obj-y += generic.o clock.o devices.o 7obj-y += generic.o clock.o devices.o
8 8
9# Support for CMOS sensor interface
10obj-$(CONFIG_MX1_VIDEO) += ksym_mx1.o mx1_camera_fiq.o
11
9# Specific board support 12# Specific board support
10obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o 13obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o
11obj-$(CONFIG_MACH_SCB9328) += scb9328.o \ No newline at end of file 14obj-$(CONFIG_MACH_SCB9328) += scb9328.o \ No newline at end of file
diff --git a/arch/arm/mach-mx1/devices.c b/arch/arm/mach-mx1/devices.c
index 97f42d96d7a1..76d1ffb48079 100644
--- a/arch/arm/mach-mx1/devices.c
+++ b/arch/arm/mach-mx1/devices.c
@@ -44,7 +44,7 @@ static struct resource imx_csi_resources[] = {
44static u64 imx_csi_dmamask = 0xffffffffUL; 44static u64 imx_csi_dmamask = 0xffffffffUL;
45 45
46struct platform_device imx_csi_device = { 46struct platform_device imx_csi_device = {
47 .name = "imx-csi", 47 .name = "mx1-camera",
48 .id = 0, /* This is used to put cameras on this interface */ 48 .id = 0, /* This is used to put cameras on this interface */
49 .dev = { 49 .dev = {
50 .dma_mask = &imx_csi_dmamask, 50 .dma_mask = &imx_csi_dmamask,
diff --git a/arch/arm/mach-mx1/ksym_mx1.c b/arch/arm/mach-mx1/ksym_mx1.c
new file mode 100644
index 000000000000..b09ee12a4ff0
--- /dev/null
+++ b/arch/arm/mach-mx1/ksym_mx1.c
@@ -0,0 +1,18 @@
1/*
2 * Exported ksyms of ARCH_MX1
3 *
4 * Copyright (C) 2008, Darius Augulis <augulis.darius@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/platform_device.h>
12#include <linux/module.h>
13
14#include <mach/mx1_camera.h>
15
16/* IMX camera FIQ handler */
17EXPORT_SYMBOL(mx1_camera_sof_fiq_start);
18EXPORT_SYMBOL(mx1_camera_sof_fiq_end);
diff --git a/arch/arm/mach-mx1/mx1_camera_fiq.S b/arch/arm/mach-mx1/mx1_camera_fiq.S
new file mode 100644
index 000000000000..9c69aa65bf17
--- /dev/null
+++ b/arch/arm/mach-mx1/mx1_camera_fiq.S
@@ -0,0 +1,35 @@
1/*
2 * Copyright (C) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
3 *
4 * Based on linux/arch/arm/lib/floppydma.S
5 * Copyright (C) 1995, 1996 Russell King
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/linkage.h>
12#include <asm/assembler.h>
13
14 .text
15 .global mx1_camera_sof_fiq_end
16 .global mx1_camera_sof_fiq_start
17mx1_camera_sof_fiq_start:
18 @ enable dma
19 ldr r12, [r9]
20 orr r12, r12, #0x00000001
21 str r12, [r9]
22 @ unmask DMA interrupt
23 ldr r12, [r8]
24 bic r12, r12, r13
25 str r12, [r8]
26 @ disable SOF interrupt
27 ldr r12, [r10]
28 bic r12, r12, #0x00010000
29 str r12, [r10]
30 @ clear SOF flag
31 mov r12, #0x00010000
32 str r12, [r11]
33 @ return from FIQ
34 subs pc, lr, #4
35mx1_camera_sof_fiq_end:
diff --git a/arch/arm/plat-mxc/include/mach/memory.h b/arch/arm/plat-mxc/include/mach/memory.h
index e0783e619580..eca37d09f3f8 100644
--- a/arch/arm/plat-mxc/include/mach/memory.h
+++ b/arch/arm/plat-mxc/include/mach/memory.h
@@ -24,4 +24,12 @@
24#define PHYS_OFFSET UL(0x80000000) 24#define PHYS_OFFSET UL(0x80000000)
25#endif 25#endif
26 26
27#if defined(CONFIG_MX1_VIDEO)
28/*
29 * Increase size of DMA-consistent memory region.
30 * This is required for i.MX camera driver to capture at least four VGA frames.
31 */
32#define CONSISTENT_DMA_SIZE SZ_4M
33#endif /* CONFIG_MX1_VIDEO */
34
27#endif /* __ASM_ARCH_MXC_MEMORY_H__ */ 35#endif /* __ASM_ARCH_MXC_MEMORY_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx1_camera.h b/arch/arm/plat-mxc/include/mach/mx1_camera.h
new file mode 100644
index 000000000000..4fd6c70314b4
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/mx1_camera.h
@@ -0,0 +1,35 @@
1/*
2 * mx1_camera.h - i.MX1/i.MXL camera driver header file
3 *
4 * Copyright (c) 2008, Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
5 * Copyright (C) 2009, Darius Augulis <augulis.darius@gmail.com>
6 *
7 * Based on PXA camera.h file:
8 * Copyright (C) 2003, Intel Corporation
9 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#ifndef __ASM_ARCH_CAMERA_H_
17#define __ASM_ARCH_CAMERA_H_
18
19#define MX1_CAMERA_DATA_HIGH 1
20#define MX1_CAMERA_PCLK_RISING 2
21#define MX1_CAMERA_VSYNC_HIGH 4
22
23extern unsigned char mx1_camera_sof_fiq_start, mx1_camera_sof_fiq_end;
24
25/**
26 * struct mx1_camera_pdata - i.MX1/i.MXL camera platform data
27 * @mclk_10khz: master clock frequency in 10kHz units
28 * @flags: MX1 camera platform flags
29 */
30struct mx1_camera_pdata {
31 unsigned long mclk_10khz;
32 unsigned long flags;
33};
34
35#endif /* __ASM_ARCH_CAMERA_H_ */