[media] introduce gspca-stk1135: Syntek STK1135 driver

Hello,
this is a new gspca driver for Syntek STK1135 webcams. The code is completely
new, but register values are based on Syntekdriver (stk11xx) by Nicolas VIVIEN
(http://syntekdriver.sourceforge.net).
Only one webcam type is supported now - vendor 0x174f, device 0x6a31.
It's Asus F5RL laptop flippable webcam with MT9M112.
The camera works better than in Windows - initializes much faster and
provides more resolutions (the sensor can do almost any resolution - just
add it to the stk1135_modes[] - could this feature be somehow used by
applications to avoid SW scaling?).
Autoflip works too - when the camera is flipped around, the image is flipped
automatically.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/stk1135.h b/drivers/media/usb/gspca/stk1135.h
new file mode 100644
index 000000000000..e1dd92ab49bb
--- /dev/null
+++ b/drivers/media/usb/gspca/stk1135.h
@@ -0,0 +1,57 @@
+/*
+ * STK1135 registers
+ *
+ * Copyright (c) 2013 Ondrej Zary
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define STK1135_REG_GCTRL       0x000   /* GPIO control */
+#define STK1135_REG_ICTRL       0x004   /* Interrupt control */
+#define STK1135_REG_IDATA       0x008   /* Interrupt data */
+#define STK1135_REG_RMCTL       0x00c   /* Remote wakeup control */
+#define STK1135_REG_POSVA       0x010   /* Power-on strapping data */
+
+#define STK1135_REG_SENSO       0x018   /* Sensor select options */
+#define STK1135_REG_PLLFD       0x01c   /* PLL frequency divider */
+
+#define STK1135_REG_SCTRL       0x100   /* Sensor control register */
+#define STK1135_REG_DCTRL       0x104   /* Decimation control register */
+#define STK1135_REG_CISPO       0x110   /* Capture image starting position */
+#define STK1135_REG_CIEPO       0x114   /* Capture image ending position */
+#define STK1135_REG_TCTRL       0x120   /* Test data control */
+
+#define STK1135_REG_SICTL       0x200   /* Serial interface control register */
+#define STK1135_REG_SBUSW       0x204   /* Serial bus write */
+#define STK1135_REG_SBUSR       0x208   /* Serial bus read */
+#define STK1135_REG_SCSI        0x20c   /* Software control serial interface */
+#define STK1135_REG_GSBWP       0x210   /* General serial bus write port */
+#define STK1135_REG_GSBRP       0x214   /* General serial bus read port */
+#define STK1135_REG_ASIC        0x2fc   /* Alternate serial interface control */
+
+#define STK1135_REG_TMGEN       0x300   /* Timing generator */
+#define STK1135_REG_TCP1        0x350   /* Timing control parameter 1 */
+
+struct stk1135_pkt_header {
+        u8 flags;
+        u8 seq;
+        __le16 gpio;
+} __packed;
+
+#define STK1135_HDR_FRAME_START (1 << 7)
+#define STK1135_HDR_ODD         (1 << 6)
+#define STK1135_HDR_I2C_VBLANK  (1 << 5)
+
+#define STK1135_HDR_SEQ_MASK    0x3f