[PATCH] ARM: S5P: Add platform helpers for camera GPIO configuration
Sylwester Nawrocki
s.nawrocki at samsung.com
Fri Feb 11 13:07:45 EST 2011
Add functions for the parallel camera GPIO interface
configuration on S5PV210 and S5PV310 SoCs.
Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
Signed-off-by: Kyungmin Park <s.nawrocki at samsung.com>
---
arch/arm/mach-s5pv210/Kconfig | 5 +++
arch/arm/mach-s5pv210/Makefile | 1 +
arch/arm/mach-s5pv210/setup-camera.c | 53 +++++++++++++++++++++++++++++++
arch/arm/mach-s5pv310/Kconfig | 5 +++
arch/arm/mach-s5pv310/Makefile | 1 +
arch/arm/mach-s5pv310/setup-camera.c | 43 +++++++++++++++++++++++++
arch/arm/plat-s5p/include/plat/camera.h | 26 +++++++++++++++
7 files changed, 134 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-s5pv210/setup-camera.c
create mode 100644 arch/arm/mach-s5pv310/setup-camera.c
create mode 100644 arch/arm/plat-s5p/include/plat/camera.h
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 53aabef..300993a 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -53,6 +53,11 @@ config S5PV210_SETUP_SDHCI_GPIO
help
Common setup code for SDHCI gpio.
+config S5PV210_SETUP_CAMERA
+ bool
+ help
+ Common setup code for the camera interfaces.
+
menu "S5PC110 Machines"
config MACH_AQUILA
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index ff1a0db..d6c9f0d 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_MACH_TORBRECK) += mach-torbreck.o
obj-y += dev-audio.o
obj-$(CONFIG_S3C64XX_DEV_SPI) += dev-spi.o
+obj-$(CONFIG_S5PV210_SETUP_CAMERA) += setup-camera.o
obj-$(CONFIG_S5PV210_SETUP_FB_24BPP) += setup-fb-24bpp.o
obj-$(CONFIG_S5PV210_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S5PV210_SETUP_I2C2) += setup-i2c2.o
diff --git a/arch/arm/mach-s5pv210/setup-camera.c b/arch/arm/mach-s5pv210/setup-camera.c
new file mode 100644
index 0000000..e13c354
--- /dev/null
+++ b/arch/arm/mach-s5pv210/setup-camera.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * S5PV310 camera interface GPIO configuration.
+ *
+ * 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/gpio.h>
+#include <plat/gpio-cfg.h>
+#include <plat/camera.h>
+
+/*
+ * Configure the camera parallel bus pins. The parallel bus can be multiplexed
+ * with any FIMC entity. Even multiple FIMC entities are allowed to be attached
+ * to a particular (A or B) gpio interface. This function should be called from
+ * a board setup code.
+ */
+int s5pv210_camif_cfg_gpio(enum s5p_camif_id id)
+{
+ u32 gpio8, gpio5;
+ int ret;
+ int i = 5;
+
+ switch (id) {
+ case S5P_CAMIF_A:
+ gpio8 = S5PV210_GPE0(0);
+ gpio5 = S5PV210_GPE1(0);
+ break;
+ case S5P_CAMIF_B:
+ gpio8 = S5PV210_GPJ0(0);
+ gpio5 = S5PV210_GPJ1(0);
+ break;
+ default:
+ WARN(1, "id: %d\n", id);
+ return -EINVAL;
+ }
+
+ ret = s3c_gpio_cfgall_range(gpio8, 8, S3C_GPIO_SFN(2),
+ S3C_GPIO_PULL_UP);
+ if (ret)
+ return ret;
+
+ ret = s3c_gpio_cfgall_range(gpio5, 5, S3C_GPIO_SFN(2),
+ S3C_GPIO_PULL_UP);
+
+ while (i-- && !ret)
+ ret = s5p_gpio_set_drvstr(S5PV210_GPE1(i),
+ S5P_GPIO_DRVSTR_LV4);
+ return ret;
+}
diff --git a/arch/arm/mach-s5pv310/Kconfig b/arch/arm/mach-s5pv310/Kconfig
index b2a9acc..ccd1dc4 100644
--- a/arch/arm/mach-s5pv310/Kconfig
+++ b/arch/arm/mach-s5pv310/Kconfig
@@ -71,6 +71,11 @@ config S5PV310_DEV_SYSMMU
help
Common setup code for SYSTEM MMU in S5PV310
+config S5PV310_SETUP_CAMERA
+ bool
+ help
+ Common setup code for the camera interfaces.
+
# machine support
menu "S5PC210 Machines"
diff --git a/arch/arm/mach-s5pv310/Makefile b/arch/arm/mach-s5pv310/Makefile
index 036fb38..c1d6577 100644
--- a/arch/arm/mach-s5pv310/Makefile
+++ b/arch/arm/mach-s5pv310/Makefile
@@ -32,6 +32,7 @@ obj-y += dev-audio.o
obj-$(CONFIG_S5PV310_DEV_PD) += dev-pd.o
obj-$(CONFIG_S5PV310_DEV_SYSMMU) += dev-sysmmu.o
+obj-$(CONFIG_S5PV310_SETUP_CAMERA) += setup-camera.o
obj-$(CONFIG_S5PV310_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S5PV310_SETUP_I2C2) += setup-i2c2.o
obj-$(CONFIG_S5PV310_SETUP_I2C3) += setup-i2c3.o
diff --git a/arch/arm/mach-s5pv310/setup-camera.c b/arch/arm/mach-s5pv310/setup-camera.c
new file mode 100644
index 0000000..8ab239e
--- /dev/null
+++ b/arch/arm/mach-s5pv310/setup-camera.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * S5PV310 camera interface GPIO configuration.
+ *
+ * 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/gpio.h>
+#include <plat/gpio-cfg.h>
+#include <plat/camera.h>
+
+/* Configure the camera parallel bus pins. */
+int s5pv310_camif_cfg_gpio(enum s5p_camif_id id)
+{
+ u32 gpio8, gpio5;
+ u32 sfn;
+ int ret;
+
+ switch (id) {
+ case S5P_CAMIF_A:
+ gpio8 = S5PV310_GPJ0(0); /* PCLK, VSYNC, HREF, DATA[0:4] */
+ gpio5 = S5PV310_GPJ1(0); /* DATA[5:7], CLKOUT, FIELD */
+ sfn = S3C_GPIO_SFN(2);
+ break;
+ case S5P_CAMIF_B:
+ gpio8 = S5PV310_GPE0(0); /* DATA[0:7] */
+ gpio5 = S5PV310_GPE1(0); /* PCLK, VSYNC, HREF, CLKOUT, FIELD */
+ sfn = S3C_GPIO_SFN(3);
+ break;
+ default:
+ WARN(1, "id: %d\n", id);
+ return -EINVAL;
+ }
+
+ ret = s3c_gpio_cfgall_range(gpio8, 8, sfn, S3C_GPIO_PULL_UP);
+ if (ret)
+ return ret;
+
+ return s3c_gpio_cfgall_range(gpio5, 5, sfn, S3C_GPIO_PULL_UP);
+}
diff --git a/arch/arm/plat-s5p/include/plat/camera.h b/arch/arm/plat-s5p/include/plat/camera.h
new file mode 100644
index 0000000..f7c66ec
--- /dev/null
+++ b/arch/arm/plat-s5p/include/plat/camera.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * S5P series camera interface helper functions
+ *
+ * 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 PLAT_S5P_CAMERA_H_
+#define PLAT_S5P_CAMERA_H_ __FILE__
+
+enum s5p_camif_id {
+ S5P_CAMIF_A,
+ S5P_CAMIF_B,
+};
+
+/**
+ * s5pvX10_camif_cfg_gpio - configure IO pins of the camera A/B interface
+ * @id: id of a camera gpio interface
+ */
+int s5pv210_camif_cfg_gpio(enum s5p_camif_id id);
+int s5pv310_camif_cfg_gpio(enum s5p_camif_id id);
+
+#endif /* PLAT_S5P_CAMERA_H_ */
--
1.7.4
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