media: video: tegra: TPS61050 flash driver

Kernel driver for TPS61050 flash/torch camera device.

Bug 794431

Original-Change-Id: I760bd086c283076dc7136bd8ccd6b75e6e823ea8
Reviewed-on: http://git-master/r/34208
Tested-by: Erik M Lilliebjerg <elilliebjerg@nvidia.com>
Reviewed-by: Michael Stewart <mstewart@nvidia.com>
Reviewed-by: John Sasinowski <jsasinowski@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

Rebase-Id: Radb862760f165e40b764b3bb104787427d024c7e

1 files changed, 97 insertions, 0 deletions

diff --git a/include/media/tps61050.h b/include/media/tps61050.h
new file mode 100644
index 000000000000..ac7a328a4b2d
--- /dev/null
+++ b/include/media/tps61050.h
@@ -0,0 +1,97 @@
+/*
+ * tps61050.h - tps61050 flash/torch kernel driver
+ *
+ * Copyright (C) 2011 NVIDIA Corp.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef __TPS61050_H__
+#define __TPS61050_H__
+
+#include <linux/ioctl.h> /* For IOCTL macros */
+
+#define NUM_TORCH_LEVELS	8
+#define NUM_FLASH_LEVELS	9
+
+/* Expected higher level power calls are:
+ * 1 = OFF
+ * 2 = STANDBY
+ * 3 = ON
+ * These will be multiplied by 2 before given to the driver PM code
+ * that uses the _PWR_ defines. This allows us to insert defines
+ * (most notably _PWR_COMM) allowing more versatile PM.
+ * The PM actions:
+ * _PWR_OFF     = board support for regulators, clocks, etc so no
+ *                power to device.
+ * _PWR_STDBY   = board support to put device in reset. Device is
+ *                useless but powered.  No communication possible.
+ * _PWR_COMM    = Device is powered but in SW standby. Communication
+ *                is possible and device retains programming.
+ * _PWR_ON      = Full power with active output.
+ */
+
+#define TPS61050_PWR_ERR		0
+#define TPS61050_PWR_OFF		2
+#define TPS61050_PWR_STDBY		4
+#define TPS61050_PWR_COMM		5
+#define TPS61050_PWR_ON			6
+
+#define TPS61050_CFG_NOSENSOR		(1 << 0)
+
+#define TPS61050_IOCTL_CAP		_IOWR('o', 1, struct tps61050_param)
+#define TPS61050_IOCTL_PWR		_IOW('o', 2, __u8)
+#define TPS61050_IOCTL_PARAM_RD		_IOWR('o', 3, struct tps61050_param)
+#define TPS61050_IOCTL_PARAM_WR		_IOW('o', 4, struct tps61050_param)
+
+#define TPS61050_FLASH_CAPS		6
+#define TPS61050_FLASH_LEVEL		7
+#define TPS61050_FLASH_PIN_STATE	8
+#define TPS61050_TORCH_CAPS		9
+#define TPS61050_TORCH_LEVEL		10
+
+struct tps61050_param {
+	int param;
+	__s32 sizeofvalue;
+	void *p_value;
+};
+
+struct tps61050_level_info {
+	__s32 guidenum;
+	__u32 sustaintime;
+	__s32 rechargefactor;
+};
+
+struct tps61050_pin_state {
+	__u16 mask;
+	__u16 values;
+};
+
+struct tps61050_flash_capabilities {
+	__u32 numberoflevels;
+	struct tps61050_level_info levels[NUM_FLASH_LEVELS];
+};
+
+struct tps61050_torch_capabilities {
+	__u32 numberoflevels;
+	__s32 guidenum[NUM_TORCH_LEVELS];
+};
+
+#ifdef __KERNEL__
+struct tps61050_platform_data {
+	int cfg;
+	int num;
+	int max_amp_torch;
+	int max_amp_flash;
+	void (*pinstate);
+	int (*init)(void);
+	void (*exit)(void);
+	int (*pm)(int);
+	int (*gpio_envm)(int);
+	int (*gpio_sync)(int);
+};
+#endif /* __KERNEL__ */
+
+#endif /* __TPS61050_H__ */