char: Add MSM rotator driver

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

arch/arm/mach-msm/include/mach/msm_rotator_imem.h

@@ -0,0 +1,28 @@
+/* Copyright (c) 2009, 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 __MSM_ROTATOR_IMEM_H__
+
+enum {
+	ROTATOR_REQUEST,
+	JPEG_REQUEST
+};
+
+/* Allocates imem for the requested owner.
+   Aquires a mutex, so DO NOT call from isr context */
+int msm_rotator_imem_allocate(int requestor);
+/* Frees imem if currently owned by requestor.
+   Unlocks a mutex, so DO NOT call from isr context */
+void msm_rotator_imem_free(int requestor);
+
+#endif

drivers/char/Kconfig

@@ -629,6 +629,24 @@ config TILE_SROM
 	  device appear much like a simple EEPROM, and knows
 	  how to partition a single ROM for multiple purposes.
 
+config MSM_ROTATOR
+        tristate "MSM Offline Image Rotator Driver"
+        depends on (ARCH_MSM7X30 || ARCH_MSM8X60 || ARCH_MSM8960) && ANDROID_PMEM
+        default y
+        help
+          This driver provides support for the image rotator HW block in the
+          MSM 7x30 SoC.
+
+config MSM_ROTATOR_USE_IMEM
+        bool "Enable rotator driver to use iMem"
+        depends on ARCH_MSM7X30 && MSM_ROTATOR
+        default y
+        help
+          This option enables the msm_rotator driver to use the move efficient
+          iMem.  Some MSM platforms may not have iMem available for the rotator
+          block.  Or some systems may want the iMem to be dedicated to a
+          different function.
+
 config MMC_GENERIC_CSDIO
 	tristate "Generic sdio driver"
 	default n

drivers/char/Makefile

@@ -65,4 +65,5 @@ obj-$(CONFIG_JS_RTC)		+= js-rtc.o
 js-rtc-y = rtc.o
 
 obj-$(CONFIG_TILE_SROM)		+= tile-srom.o
+obj-$(CONFIG_MSM_ROTATOR)	+= msm_rotator.o
 obj-$(CONFIG_MMC_GENERIC_CSDIO)	+= csdio.o

include/linux/Kbuild

@@ -412,4 +412,5 @@ header-y += x25.h
 header-y += xattr.h
 header-y += xfrm.h
 header-y += msm_mdp.h
+header-y += msm_rotator.h
 header-y += genlock.h

include/linux/msm_rotator.h

@@ -0,0 +1,60 @@
+#ifndef __MSM_ROTATOR_H__
+#define __MSM_ROTATOR_H__
+
+#include <linux/types.h>
+#include <linux/msm_mdp.h>
+
+#define MSM_ROTATOR_IOCTL_MAGIC 'R'
+
+#define MSM_ROTATOR_IOCTL_START   \
+		_IOWR(MSM_ROTATOR_IOCTL_MAGIC, 1, struct msm_rotator_img_info)
+#define MSM_ROTATOR_IOCTL_ROTATE   \
+		_IOW(MSM_ROTATOR_IOCTL_MAGIC, 2, struct msm_rotator_data_info)
+#define MSM_ROTATOR_IOCTL_FINISH   \
+		_IOW(MSM_ROTATOR_IOCTL_MAGIC, 3, int)
+
+#define ROTATOR_VERSION_01	0xA5B4C301
+
+enum rotator_clk_type {
+	ROTATOR_CORE_CLK,
+	ROTATOR_PCLK,
+	ROTATOR_IMEM_CLK
+};
+
+struct msm_rotator_img_info {
+	unsigned int session_id;
+	struct msmfb_img  src;
+	struct msmfb_img  dst;
+	struct mdp_rect src_rect;
+	unsigned int    dst_x;
+	unsigned int    dst_y;
+	unsigned char   rotations;
+	int enable;
+	unsigned int	downscale_ratio;
+};
+
+struct msm_rotator_data_info {
+	int session_id;
+	struct msmfb_data src;
+	struct msmfb_data dst;
+	unsigned int version_key;
+	struct msmfb_data src_chroma;
+	struct msmfb_data dst_chroma;
+};
+
+struct msm_rot_clocks {
+	const char *clk_name;
+	enum rotator_clk_type clk_type;
+	unsigned int clk_rate;
+};
+
+struct msm_rotator_platform_data {
+	unsigned int number_of_clocks;
+	unsigned int hardware_version_number;
+	struct msm_rot_clocks *rotator_clks;
+#ifdef CONFIG_MSM_BUS_SCALING
+	struct msm_bus_scale_pdata *bus_scale_table;
+#endif
+};
+#endif
+