diff options
| -rw-r--r-- | arch/arm/mach-tegra/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/csi.c | 84 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/csi.h | 31 |
3 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index b8a2afc07d3d..7804f37fa15b 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -23,6 +23,7 @@ obj-y += powergate.o obj-y += suspend.o obj-y += fuse.o obj-y += kfuse.o +obj-y += csi.o obj-$(CONFIG_TEGRA_SILICON_PLATFORM) += tegra_odm_fuses.o obj-y += i2c_error_recovery.o ifeq ($(CONFIG_TEGRA_ALSA),y) diff --git a/arch/arm/mach-tegra/csi.c b/arch/arm/mach-tegra/csi.c new file mode 100644 index 000000000000..3b26c7ae2233 --- /dev/null +++ b/arch/arm/mach-tegra/csi.c @@ -0,0 +1,84 @@ +/* + * arch/arm/mach-tegra/csi.c + * + * Copyright (C) 2010-2011 NVIDIA Corporation. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/iomap.h> +#include <mach/csi.h> + +#include "clock.h" + +static struct clk *vi_clk; +static struct clk *csi_clk; + +int tegra_vi_csi_writel(u32 val, u32 offset) +{ + if (vi_clk == NULL) { + vi_clk = tegra_get_clock_by_name("vi"); + if (IS_ERR_OR_NULL(vi_clk)) { + pr_err("vi: can't get vi clock\n"); + return -EINVAL; + } + } + clk_enable(vi_clk); + + if (csi_clk == NULL) { + csi_clk = tegra_get_clock_by_name("csi"); + if (IS_ERR_OR_NULL(csi_clk)) { + pr_err("csi: can't get csi clock\n"); + return -EINVAL; + } + } + clk_enable(csi_clk); + + writel(val, IO_TO_VIRT(TEGRA_VI_BASE) + offset * 4); + + clk_disable(csi_clk); + clk_disable(vi_clk); + return 0; +} + +int tegra_vi_csi_readl(u32 offset, u32 *val) +{ + if (vi_clk == NULL) { + vi_clk = tegra_get_clock_by_name("vi"); + if (IS_ERR_OR_NULL(vi_clk)) { + pr_err("vi: can't get vi clock\n"); + return -EINVAL; + } + } + clk_enable(vi_clk); + + if (csi_clk == NULL) { + csi_clk = tegra_get_clock_by_name("csi"); + if (IS_ERR_OR_NULL(csi_clk)) { + pr_err("csi: can't get csi clock\n"); + return -EINVAL; + } + } + clk_enable(csi_clk); + + *val = readl(IO_TO_VIRT(TEGRA_VI_BASE) + offset * 4); + + clk_disable(csi_clk); + clk_disable(vi_clk); + + return 0; +} diff --git a/arch/arm/mach-tegra/include/mach/csi.h b/arch/arm/mach-tegra/include/mach/csi.h new file mode 100644 index 000000000000..cf47325b7270 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/csi.h @@ -0,0 +1,31 @@ +/* + * arch/arm/mach-tegra/include/mach/csi.h + * + * Copyright (C) 2010-2011 NVIDIA Corporation. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_CSI_H +#define __MACH_TEGRA_CSI_H + +#define CSI_DSI_MIPI_CAL_CONFIG 0x234 +#define MIPI_CAL_HSPDOSD(x) (((x) & 0x1f) << 16) +#define MIPI_CAL_HSPUOSD(x) (((x) & 0x1f) << 8) + +#define CSI_MIPIBIAS_PAD_CONFIG 0x235 +#define PAD_DRIV_DN_REF(x) (((x) & 0x7) << 16) +#define PAD_DRIV_UP_REF(x) (((x) & 0x7) << 8) + +int tegra_vi_csi_readl(u32 offset, u32 *val); +int tegra_vi_csi_writel(u32 value, u32 offset); + +#endif |