msm_fb: MHL: Adding MHL api's for USB interaction.

Adding MHL api's for device discovery and registering callback mechanism.USB driver use these API's for synchronization with MHL driver. Change-Id: I0846951302e3b5f5d20d566c92c2f224528ca455 Signed-off-by: Manoj Rao <manojraj@codeaurora.org> Signed-off-by: Abhishek Kharbanda <akharban@codeaurora.org>
2012-05-21 11:31:15 -07:00
parent e69e5d7c10
commit d619231807
6 changed files with 261 additions and 41 deletions
--- a/include/linux/mhl_8334.h
+++ b/include/linux/mhl_8334.h
@@ -0,0 +1,106 @@
+/* Copyright (c) 2012, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ *
+ */
+
+#ifndef __MHL_MSM_H__
+#define __MHL_MSM_H__
+
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <mach/board.h>
+#include <linux/mhl_devcap.h>
+#include <linux/mhl_defs.h>
+
+#define MHL_DEVICE_NAME "sii8334"
+#define MHL_DRIVER_NAME "sii8334"
+
+#define HPD_UP               1
+#define HPD_DOWN             0
+
+enum discovery_result_enum {
+	MHL_DISCOVERY_RESULT_USB = 0,
+	MHL_DISCOVERY_RESULT_MHL,
+};
+
+/* USB driver interface  */
+
+#ifdef CONFIG_FB_MSM_HDMI_MHL_8334
+ /*  mhl_device_discovery */
+extern int mhl_device_discovery(const char *name, int *result);
+
+/* - register|unregister MHL cable plug callback. */
+extern int mhl_register_callback
+	(const char *name, void (*callback)(int online));
+extern int mhl_unregister_callback(const char *name);
+#else
+static inline int mhl_device_discovery(const char *name, int *result)
+{
+	return -ENODEV;
+}
+
+static inline int
+	mhl_register_callback(const char *name, void (*callback)(int online))
+{
+	return -ENODEV;
+}
+
+static inline int mhl_unregister_callback(const char *name)
+{
+	return -ENODEV;
+}
+#endif
+
+struct mhl_msm_state_t {
+	struct i2c_client *i2c_client;
+	struct i2c_driver *i2c_driver;
+	uint8_t      cur_state;
+	uint8_t chip_rev_id;
+	struct msm_mhl_platform_data *mhl_data;
+	/* Device Discovery stuff */
+	int mhl_mode;
+	struct completion rgnd_done;
+};
+
+enum {
+	TX_PAGE_TPI          = 0x00,
+	TX_PAGE_L0           = 0x01,
+	TX_PAGE_L1           = 0x02,
+	TX_PAGE_2            = 0x03,
+	TX_PAGE_3            = 0x04,
+	TX_PAGE_CBUS         = 0x05,
+	TX_PAGE_DDC_EDID     = 0x06,
+	TX_PAGE_DDC_SEGM     = 0x07,
+};
+
+enum mhl_st_type {
+	POWER_STATE_D0_NO_MHL = 0,
+	POWER_STATE_D0_MHL    = 2,
+	POWER_STATE_D3        = 3,
+};
+
+enum {
+	DEV_PAGE_TPI_0      = (0x72),
+	DEV_PAGE_TX_L0_0    = (0x72),
+	DEV_PAGE_TPI_1      = (0x76),
+	DEV_PAGE_TX_L0_1    = (0x76),
+	DEV_PAGE_TX_L1_0    = (0x7A),
+	DEV_PAGE_TX_L1_1    = (0x7E),
+	DEV_PAGE_TX_2_0     = (0x92),
+	DEV_PAGE_TX_2_1     = (0x96),
+	DEV_PAGE_TX_3_0	    = (0x9A),
+	DEV_PAGE_TX_3_1	    = (0x9E),
+	DEV_PAGE_CBUS       = (0xC8),
+	DEV_PAGE_DDC_EDID   = (0xA0),
+	DEV_PAGE_DDC_SEGM   = (0x60),
+};
+
+#endif /* __MHL_MSM_H__ */