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authorSakari Ailus <sakari.ailus@iki.fi>2011-05-05 15:39:25 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-07-27 17:55:39 -0300
commit13abadad177074b84f6697639e1d4f64a55b1773 (patch)
tree007a906c959474d2ced1848ad2a4c791a8b5f1ca /include
parent7ba85fa4fdbbe800e92a937ca567120ef32fe49f (diff)
[media] adp1653: Add driver for LED flash controller
This patch adds the driver for the adp1653 LED flash controller. This controller supports a high power led in flash and torch modes and an indicator light, sometimes also called privacy light. The adp1653 is used on the Nokia N900. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Tuukka Toivonen <tuukkat76@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: David Cohen <dacohen@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/media/adp1653.h126
1 files changed, 126 insertions, 0 deletions
diff --git a/include/media/adp1653.h b/include/media/adp1653.h
new file mode 100644
index 000000000000..50a1af88aed0
--- /dev/null
+++ b/include/media/adp1653.h
@@ -0,0 +1,126 @@
+/*
+ * include/media/adp1653.h
+ *
+ * Copyright (C) 2008--2011 Nokia Corporation
+ *
+ * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+ *
+ * Contributors:
+ * Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+ * Tuukka Toivonen <tuukkat76@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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef ADP1653_H
+#define ADP1653_H
+
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+
+#define ADP1653_NAME "adp1653"
+#define ADP1653_I2C_ADDR (0x60 >> 1)
+
+/* Register definitions */
+#define ADP1653_REG_OUT_SEL 0x00
+#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN 0x01
+#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX 0x0b
+#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN 0x0c
+#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX 0x1f
+#define ADP1653_REG_OUT_SEL_HPLED_SHIFT 3
+#define ADP1653_REG_OUT_SEL_ILED_MAX 0x07
+#define ADP1653_REG_OUT_SEL_ILED_SHIFT 0
+
+#define ADP1653_REG_CONFIG 0x01
+#define ADP1653_REG_CONFIG_TMR_CFG (1 << 4)
+#define ADP1653_REG_CONFIG_TMR_SET_MAX 0x0f
+#define ADP1653_REG_CONFIG_TMR_SET_SHIFT 0
+
+#define ADP1653_REG_SW_STROBE 0x02
+#define ADP1653_REG_SW_STROBE_SW_STROBE (1 << 0)
+
+#define ADP1653_REG_FAULT 0x03
+#define ADP1653_REG_FAULT_FLT_SCP (1 << 3)
+#define ADP1653_REG_FAULT_FLT_OT (1 << 2)
+#define ADP1653_REG_FAULT_FLT_TMR (1 << 1)
+#define ADP1653_REG_FAULT_FLT_OV (1 << 0)
+
+#define ADP1653_INDICATOR_INTENSITY_MIN 0
+#define ADP1653_INDICATOR_INTENSITY_STEP 2500
+#define ADP1653_INDICATOR_INTENSITY_MAX \
+ (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
+#define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
+ ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
+#define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
+ ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
+
+#define ADP1653_FLASH_INTENSITY_BASE 35
+#define ADP1653_FLASH_INTENSITY_STEP 15
+#define ADP1653_FLASH_INTENSITY_MIN \
+ (ADP1653_FLASH_INTENSITY_BASE \
+ + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
+#define ADP1653_FLASH_INTENSITY_MAX \
+ (ADP1653_FLASH_INTENSITY_MIN + \
+ (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX - \
+ ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) * \
+ ADP1653_FLASH_INTENSITY_STEP)
+
+#define ADP1653_FLASH_INTENSITY_mA_TO_REG(a) \
+ ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 : \
+ (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
+#define ADP1653_FLASH_INTENSITY_REG_TO_mA(a) \
+ ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
+
+#define ADP1653_TORCH_INTENSITY_MIN \
+ (ADP1653_FLASH_INTENSITY_BASE \
+ + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
+#define ADP1653_TORCH_INTENSITY_MAX \
+ (ADP1653_TORCH_INTENSITY_MIN + \
+ (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX - \
+ ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) * \
+ ADP1653_FLASH_INTENSITY_STEP)
+
+struct adp1653_platform_data {
+ int (*power)(struct v4l2_subdev *sd, int on);
+
+ u32 max_flash_timeout; /* flash light timeout in us */
+ u32 max_flash_intensity; /* led intensity, flash mode */
+ u32 max_torch_intensity; /* led intensity, torch mode */
+ u32 max_indicator_intensity; /* indicator led intensity */
+};
+
+#define to_adp1653_flash(sd) container_of(sd, struct adp1653_flash, subdev)
+
+struct adp1653_flash {
+ struct v4l2_subdev subdev;
+ struct adp1653_platform_data *platform_data;
+
+ struct v4l2_ctrl_handler ctrls;
+ struct v4l2_ctrl *led_mode;
+ struct v4l2_ctrl *flash_timeout;
+ struct v4l2_ctrl *flash_intensity;
+ struct v4l2_ctrl *torch_intensity;
+ struct v4l2_ctrl *indicator_intensity;
+
+ struct mutex power_lock;
+ int power_count;
+ int fault;
+};
+
+#endif /* ADP1653_H */