media: meye: deprecate this driver

Deprecate the meye driver. This driver does not use the vb2 framework
for video streaming, instead it implements its own version.

We want to get rid of these old drivers, so deprecated it for future
removal.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

7 files changed, 2154 insertions, 0 deletions

diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index 9781080c6e7d..ed3e484603d7 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -56,6 +56,7 @@ menuconfig STAGING_MEDIA_DEPRECATED
 
 if STAGING_MEDIA_DEPRECATED
 source "drivers/staging/media/deprecated/cpia2/Kconfig"
+source "drivers/staging/media/deprecated/meye/Kconfig"
 source "drivers/staging/media/deprecated/stkwebcam/Kconfig"
 endif
 
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index adcf128d27b4..822c70ab4c0b 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_VIDEO_CPIA2)	+= deprecated/cpia2/
 obj-$(CONFIG_VIDEO_IMX_MEDIA)	+= imx/
 obj-$(CONFIG_VIDEO_MAX96712)	+= max96712/
 obj-$(CONFIG_VIDEO_MESON_VDEC)	+= meson/vdec/
+obj-$(CONFIG_VIDEO_MEYE)	+= deprecated/meye/
 obj-$(CONFIG_VIDEO_OMAP4)	+= omap4iss/
 obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC)	+= rkvdec/
 obj-$(CONFIG_VIDEO_STKWEBCAM)	+= deprecated/stkwebcam/
diff --git a/drivers/staging/media/deprecated/meye/Kconfig b/drivers/staging/media/deprecated/meye/Kconfig
new file mode 100644
index 000000000000..f135f8568c85
--- /dev/null
+++ b/drivers/staging/media/deprecated/meye/Kconfig
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_MEYE
+	tristate "Sony Vaio Picturebook Motion Eye Video For Linux (DEPRECATED)"
+	depends on PCI && VIDEO_DEV
+	depends on SONY_LAPTOP
+	depends on X86 || COMPILE_TEST
+	help
+	  This is the video4linux driver for the Motion Eye camera found
+	  in the Vaio Picturebook laptops. Please read the material in
+	  <file:Documentation/admin-guide/media/meye.rst> for more information.
+
+	  If you say Y or M here, you need to say Y or M to "Sony Laptop
+	  Extras" in the misc device section.
+
+	  This driver is deprecated and is scheduled for removal by
+	  the beginning of 2023. See the TODO file for more information.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called meye.
diff --git a/drivers/staging/media/deprecated/meye/Makefile b/drivers/staging/media/deprecated/meye/Makefile
new file mode 100644
index 000000000000..36f1f86f0d58
--- /dev/null
+++ b/drivers/staging/media/deprecated/meye/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_VIDEO_MEYE) += meye.o
diff --git a/drivers/staging/media/deprecated/meye/TODO b/drivers/staging/media/deprecated/meye/TODO
new file mode 100644
index 000000000000..6d1d1433d5a0
--- /dev/null
+++ b/drivers/staging/media/deprecated/meye/TODO
@@ -0,0 +1,6 @@
+The meye driver does not use the vb2 framework for streaming
+video, instead it implements this in the driver.
+
+To prevent removal of this driver early 2023 it has to be
+converted to use vb2. Contact the linux-media@vger.kernel.org
+mailing list if you want to do this.
diff --git a/drivers/staging/media/deprecated/meye/meye.c b/drivers/staging/media/deprecated/meye/meye.c
new file mode 100644
index 000000000000..5d87efd9b95c
--- /dev/null
+++ b/drivers/staging/media/deprecated/meye/meye.c
@@ -0,0 +1,1814 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Motion Eye video4linux driver for Sony Vaio PictureBook
+ *
+ * Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net>
+ *
+ * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
+ *
+ * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
+ *
+ * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
+ *
+ * Some parts borrowed from various video4linux drivers, especially
+ * bttv-driver.c and zoran.c, see original files for credits.
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/gfp.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <linux/uaccess.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/dma-mapping.h>
+
+#include "meye.h"
+#include <linux/meye.h>
+
+MODULE_AUTHOR("Stelian Pop <stelian@popies.net>");
+MODULE_DESCRIPTION("v4l2 driver for the MotionEye camera");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(MEYE_DRIVER_VERSION);
+
+/* number of grab buffers */
+static unsigned int gbuffers = 2;
+module_param(gbuffers, int, 0444);
+MODULE_PARM_DESC(gbuffers, "number of capture buffers, default is 2 (32 max)");
+
+/* size of a grab buffer */
+static unsigned int gbufsize = MEYE_MAX_BUFSIZE;
+module_param(gbufsize, int, 0444);
+MODULE_PARM_DESC(gbufsize, "size of the capture buffers, default is 614400 (will be rounded up to a page multiple)");
+
+/* /dev/videoX registration number */
+static int video_nr = -1;
+module_param(video_nr, int, 0444);
+MODULE_PARM_DESC(video_nr, "video device to register (0=/dev/video0, etc)");
+
+/* driver structure - only one possible */
+static struct meye meye;
+
+/****************************************************************************/
+/* Memory allocation routines (stolen from bttv-driver.c)                   */
+/****************************************************************************/
+static void *rvmalloc(unsigned long size)
+{
+	void *mem;
+	unsigned long adr;
+
+	size = PAGE_ALIGN(size);
+	mem = vmalloc_32(size);
+	if (mem) {
+		memset(mem, 0, size);
+		adr = (unsigned long) mem;
+		while (size > 0) {
+			SetPageReserved(vmalloc_to_page((void *)adr));
+			adr += PAGE_SIZE;
+			size -= PAGE_SIZE;
+		}
+	}
+	return mem;
+}
+
+static void rvfree(void * mem, unsigned long size)
+{
+	unsigned long adr;
+
+	if (mem) {
+		adr = (unsigned long) mem;
+		while ((long) size > 0) {
+			ClearPageReserved(vmalloc_to_page((void *)adr));
+			adr += PAGE_SIZE;
+			size -= PAGE_SIZE;
+		}
+		vfree(mem);
+	}
+}
+
+/*
+ * return a page table pointing to N pages of locked memory
+ *
+ * NOTE: The meye device expects DMA addresses on 32 bits, we build
+ * a table of 1024 entries = 4 bytes * 1024 = 4096 bytes.
+ */
+static int ptable_alloc(void)
+{
+	u32 *pt;
+	int i;
+
+	memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
+
+	/* give only 32 bit DMA addresses */
+	if (dma_set_mask(&meye.mchip_dev->dev, DMA_BIT_MASK(32)))
+		return -1;
+
+	meye.mchip_ptable_toc = dma_alloc_coherent(&meye.mchip_dev->dev,
+						   PAGE_SIZE,
+						   &meye.mchip_dmahandle,
+						   GFP_KERNEL);
+	if (!meye.mchip_ptable_toc) {
+		meye.mchip_dmahandle = 0;
+		return -1;
+	}
+
+	pt = meye.mchip_ptable_toc;
+	for (i = 0; i < MCHIP_NB_PAGES; i++) {
+		dma_addr_t dma;
+		meye.mchip_ptable[i] = dma_alloc_coherent(&meye.mchip_dev->dev,
+							  PAGE_SIZE,
+							  &dma,
+							  GFP_KERNEL);
+		if (!meye.mchip_ptable[i]) {
+			int j;
+			pt = meye.mchip_ptable_toc;
+			for (j = 0; j < i; ++j) {
+				dma = (dma_addr_t) *pt;
+				dma_free_coherent(&meye.mchip_dev->dev,
+						  PAGE_SIZE,
+						  meye.mchip_ptable[j], dma);
+				pt++;
+			}
+			dma_free_coherent(&meye.mchip_dev->dev,
+					  PAGE_SIZE,
+					  meye.mchip_ptable_toc,
+					  meye.mchip_dmahandle);
+			meye.mchip_ptable_toc = NULL;
+			meye.mchip_dmahandle = 0;
+			return -1;
+		}
+		*pt = (u32) dma;
+		pt++;
+	}
+	return 0;
+}
+
+static void ptable_free(void)
+{
+	u32 *pt;
+	int i;
+
+	pt = meye.mchip_ptable_toc;
+	for (i = 0; i < MCHIP_NB_PAGES; i++) {
+		dma_addr_t dma = (dma_addr_t) *pt;
+		if (meye.mchip_ptable[i])
+			dma_free_coherent(&meye.mchip_dev->dev,
+					  PAGE_SIZE,
+					  meye.mchip_ptable[i], dma);
+		pt++;
+	}
+
+	if (meye.mchip_ptable_toc)
+		dma_free_coherent(&meye.mchip_dev->dev,
+				  PAGE_SIZE,
+				  meye.mchip_ptable_toc,
+				  meye.mchip_dmahandle);
+
+	memset(meye.mchip_ptable, 0, sizeof(meye.mchip_ptable));
+	meye.mchip_ptable_toc = NULL;
+	meye.mchip_dmahandle = 0;
+}
+
+/* copy data from ptable into buf */
+static void ptable_copy(u8 *buf, int start, int size, int pt_pages)
+{
+	int i;
+
+	for (i = 0; i < (size / PAGE_SIZE) * PAGE_SIZE; i += PAGE_SIZE) {
+		memcpy(buf + i, meye.mchip_ptable[start++], PAGE_SIZE);
+		if (start >= pt_pages)
+			start = 0;
+	}
+	memcpy(buf + i, meye.mchip_ptable[start], size % PAGE_SIZE);
+}
+
+/****************************************************************************/
+/* JPEG tables at different qualities to load into the VRJ chip             */
+/****************************************************************************/
+
+/* return a set of quantisation tables based on a quality from 1 to 10 */
+static u16 *jpeg_quantisation_tables(int *length, int quality)
+{
+	static u16 jpeg_tables[][70] = { {
+		0xdbff, 0x4300, 0xff00, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff,
+		0xdbff, 0x4300, 0xff01, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff,
+	},
+	{
+		0xdbff, 0x4300, 0x5000, 0x3c37, 0x3c46, 0x5032, 0x4146, 0x5a46,
+		0x5055, 0x785f, 0x82c8, 0x6e78, 0x786e, 0xaff5, 0x91b9, 0xffc8,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff,
+		0xdbff, 0x4300, 0x5501, 0x5a5a, 0x6978, 0xeb78, 0x8282, 0xffeb,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
+		0xffff, 0xffff, 0xffff,
+	},
+	{
+		0xdbff, 0x4300, 0x2800, 0x1e1c, 0x1e23, 0x2819, 0x2123, 0x2d23,
+		0x282b, 0x3c30, 0x4164, 0x373c, 0x3c37, 0x587b, 0x495d, 0x9164,
+		0x9980, 0x8f96, 0x8c80, 0xa08a, 0xe6b4, 0xa0c3, 0xdaaa, 0x8aad,
+		0xc88c, 0xcbff, 0xeeda, 0xfff5, 0xffff, 0xc19b, 0xffff, 0xfaff,
+		0xe6ff, 0xfffd, 0xfff8,
+		0xdbff, 0x4300, 0x2b01, 0x2d2d, 0x353c, 0x763c, 0x4141, 0xf876,
+		0x8ca5, 0xf8a5, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
+		0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
+		0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
+		0xf8f8, 0xf8f8, 0xfff8,
+	},
+	{
+		0xdbff, 0x4300, 0x1b00, 0x1412, 0x1417, 0x1b11, 0x1617, 0x1e17,
+		0x1b1c, 0x2820, 0x2b42, 0x2528, 0x2825, 0x3a51, 0x303d, 0x6042,
+		0x6555, 0x5f64, 0x5d55, 0x6a5b, 0x9978, 0x6a81, 0x9071, 0x5b73,
+		0x855d, 0x86b5, 0x9e90, 0xaba3, 0xabad, 0x8067, 0xc9bc, 0xa6ba,
+		0x99c7, 0xaba8, 0xffa4,
+		0xdbff, 0x4300, 0x1c01, 0x1e1e, 0x2328, 0x4e28, 0x2b2b, 0xa44e,
+		0x5d6e, 0xa46e, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
+		0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
+		0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
+		0xa4a4, 0xa4a4, 0xffa4,
+	},
+	{
+		0xdbff, 0x4300, 0x1400, 0x0f0e, 0x0f12, 0x140d, 0x1012, 0x1712,
+		0x1415, 0x1e18, 0x2132, 0x1c1e, 0x1e1c, 0x2c3d, 0x242e, 0x4932,
+		0x4c40, 0x474b, 0x4640, 0x5045, 0x735a, 0x5062, 0x6d55, 0x4556,
+		0x6446, 0x6588, 0x776d, 0x817b, 0x8182, 0x604e, 0x978d, 0x7d8c,
+		0x7396, 0x817e, 0xff7c,
+		0xdbff, 0x4300, 0x1501, 0x1717, 0x1a1e, 0x3b1e, 0x2121, 0x7c3b,
+		0x4653, 0x7c53, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
+		0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
+		0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
+		0x7c7c, 0x7c7c, 0xff7c,
+	},
+	{
+		0xdbff, 0x4300, 0x1000, 0x0c0b, 0x0c0e, 0x100a, 0x0d0e, 0x120e,
+		0x1011, 0x1813, 0x1a28, 0x1618, 0x1816, 0x2331, 0x1d25, 0x3a28,
+		0x3d33, 0x393c, 0x3833, 0x4037, 0x5c48, 0x404e, 0x5744, 0x3745,
+		0x5038, 0x516d, 0x5f57, 0x6762, 0x6768, 0x4d3e, 0x7971, 0x6470,
+		0x5c78, 0x6765, 0xff63,
+		0xdbff, 0x4300, 0x1101, 0x1212, 0x1518, 0x2f18, 0x1a1a, 0x632f,
+		0x3842, 0x6342, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
+		0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
+		0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
+		0x6363, 0x6363, 0xff63,
+	},
+	{
+		0xdbff, 0x4300, 0x0d00, 0x0a09, 0x0a0b, 0x0d08, 0x0a0b, 0x0e0b,
+		0x0d0e, 0x130f, 0x1520, 0x1213, 0x1312, 0x1c27, 0x171e, 0x2e20,
+		0x3129, 0x2e30, 0x2d29, 0x332c, 0x4a3a, 0x333e, 0x4636, 0x2c37,
+		0x402d, 0x4157, 0x4c46, 0x524e, 0x5253, 0x3e32, 0x615a, 0x505a,
+		0x4a60, 0x5251, 0xff4f,
+		0xdbff, 0x4300, 0x0e01, 0x0e0e, 0x1113, 0x2613, 0x1515, 0x4f26,
+		0x2d35, 0x4f35, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
+		0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
+		0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
+		0x4f4f, 0x4f4f, 0xff4f,
+	},
+	{
+		0xdbff, 0x4300, 0x0a00, 0x0707, 0x0708, 0x0a06, 0x0808, 0x0b08,
+		0x0a0a, 0x0e0b, 0x1018, 0x0d0e, 0x0e0d, 0x151d, 0x1116, 0x2318,
+		0x251f, 0x2224, 0x221f, 0x2621, 0x372b, 0x262f, 0x3429, 0x2129,
+		0x3022, 0x3141, 0x3934, 0x3e3b, 0x3e3e, 0x2e25, 0x4944, 0x3c43,
+		0x3748, 0x3e3d, 0xff3b,
+		0xdbff, 0x4300, 0x0a01, 0x0b0b, 0x0d0e, 0x1c0e, 0x1010, 0x3b1c,
+		0x2228, 0x3b28, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
+		0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
+		0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
+		0x3b3b, 0x3b3b, 0xff3b,
+	},
+	{
+		0xdbff, 0x4300, 0x0600, 0x0504, 0x0506, 0x0604, 0x0506, 0x0706,
+		0x0607, 0x0a08, 0x0a10, 0x090a, 0x0a09, 0x0e14, 0x0c0f, 0x1710,
+		0x1814, 0x1718, 0x1614, 0x1a16, 0x251d, 0x1a1f, 0x231b, 0x161c,
+		0x2016, 0x202c, 0x2623, 0x2927, 0x292a, 0x1f19, 0x302d, 0x282d,
+		0x2530, 0x2928, 0xff28,
+		0xdbff, 0x4300, 0x0701, 0x0707, 0x080a, 0x130a, 0x0a0a, 0x2813,
+		0x161a, 0x281a, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
+		0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
+		0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
+		0x2828, 0x2828, 0xff28,
+	},
+	{
+		0xdbff, 0x4300, 0x0300, 0x0202, 0x0203, 0x0302, 0x0303, 0x0403,
+		0x0303, 0x0504, 0x0508, 0x0405, 0x0504, 0x070a, 0x0607, 0x0c08,
+		0x0c0a, 0x0b0c, 0x0b0a, 0x0d0b, 0x120e, 0x0d10, 0x110e, 0x0b0e,
+		0x100b, 0x1016, 0x1311, 0x1514, 0x1515, 0x0f0c, 0x1817, 0x1416,
+		0x1218, 0x1514, 0xff14,
+		0xdbff, 0x4300, 0x0301, 0x0404, 0x0405, 0x0905, 0x0505, 0x1409,
+		0x0b0d, 0x140d, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
+		0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
+		0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
+		0x1414, 0x1414, 0xff14,
+	},
+	{
+		0xdbff, 0x4300, 0x0100, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0xff01,
+		0xdbff, 0x4300, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0101, 0x0101, 0xff01,
+	} };
+
+	if (quality < 0 || quality > 10) {
+		printk(KERN_WARNING
+		       "meye: invalid quality level %d - using 8\n", quality);
+		quality = 8;
+	}
+
+	*length = ARRAY_SIZE(jpeg_tables[quality]);
+	return jpeg_tables[quality];
+}
+
+/* return a generic set of huffman tables */
+static u16 *jpeg_huffman_tables(int *length)
+{
+	static u16 tables[] = {
+		0xC4FF, 0xB500, 0x0010, 0x0102, 0x0303, 0x0402, 0x0503, 0x0405,
+		0x0004, 0x0100, 0x017D, 0x0302, 0x0400, 0x0511, 0x2112, 0x4131,
+		0x1306, 0x6151, 0x2207, 0x1471, 0x8132, 0xA191, 0x2308, 0xB142,
+		0x15C1, 0xD152, 0x24F0, 0x6233, 0x8272, 0x0A09, 0x1716, 0x1918,
+		0x251A, 0x2726, 0x2928, 0x342A, 0x3635, 0x3837, 0x3A39, 0x4443,
+		0x4645, 0x4847, 0x4A49, 0x5453, 0x5655, 0x5857, 0x5A59, 0x6463,
+		0x6665, 0x6867, 0x6A69, 0x7473, 0x7675, 0x7877, 0x7A79, 0x8483,
+		0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A,
+		0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8,
+		0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6,
+		0xD9D8, 0xE1DA, 0xE3E2, 0xE5E4, 0xE7E6, 0xE9E8, 0xF1EA, 0xF3F2,
+		0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
+		0xC4FF, 0xB500, 0x0011, 0x0102, 0x0402, 0x0304, 0x0704, 0x0405,
+		0x0004, 0x0201, 0x0077, 0x0201, 0x1103, 0x0504, 0x3121, 0x1206,
+		0x5141, 0x6107, 0x1371, 0x3222, 0x0881, 0x4214, 0xA191, 0xC1B1,
+		0x2309, 0x5233, 0x15F0, 0x7262, 0x0AD1, 0x2416, 0xE134, 0xF125,
+		0x1817, 0x1A19, 0x2726, 0x2928, 0x352A, 0x3736, 0x3938, 0x433A,
+		0x4544, 0x4746, 0x4948, 0x534A, 0x5554, 0x5756, 0x5958, 0x635A,
+		0x6564, 0x6766, 0x6968, 0x736A, 0x7574, 0x7776, 0x7978, 0x827A,
+		0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998,
+		0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6,
+		0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4,
+		0xD7D6, 0xD9D8, 0xE2DA, 0xE4E3, 0xE6E5, 0xE8E7, 0xEAE9, 0xF3F2,
+		0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
+		0xC4FF, 0x1F00, 0x0000, 0x0501, 0x0101, 0x0101, 0x0101, 0x0000,
+		0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
+		0xFF0B,
+		0xC4FF, 0x1F00, 0x0001, 0x0103, 0x0101, 0x0101, 0x0101, 0x0101,
+		0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
+		0xFF0B
+	};
+
+	*length = ARRAY_SIZE(tables);
+	return tables;
+}
+
+/****************************************************************************/
+/* MCHIP low-level functions                                                */
+/****************************************************************************/
+
+/* returns the horizontal capture size */
+static inline int mchip_hsize(void)
+{
+	return meye.params.subsample ? 320 : 640;
+}
+
+/* returns the vertical capture size */
+static inline int mchip_vsize(void)
+{
+	return meye.params.subsample ? 240 : 480;
+}
+
+/* waits for a register to be available */
+static void mchip_sync(int reg)
+{
+	u32 status;
+	int i;
+
+	if (reg == MCHIP_MM_FIFO_DATA) {
+		for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
+			status = readl(meye.mchip_mmregs +
+				       MCHIP_MM_FIFO_STATUS);
+			if (!(status & MCHIP_MM_FIFO_WAIT)) {
+				printk(KERN_WARNING "meye: fifo not ready\n");
+				return;
+			}
+			if (status & MCHIP_MM_FIFO_READY)
+				return;
+			udelay(1);
+		}
+	} else if (reg > 0x80) {
+		u32 mask = (reg < 0x100) ? MCHIP_HIC_STATUS_MCC_RDY
+					 : MCHIP_HIC_STATUS_VRJ_RDY;
+		for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
+			status = readl(meye.mchip_mmregs + MCHIP_HIC_STATUS);
+			if (status & mask)
+				return;
+			udelay(1);
+		}
+	} else
+		return;
+	printk(KERN_WARNING
+	       "meye: mchip_sync() timeout on reg 0x%x status=0x%x\n",
+	       reg, status);
+}
+
+/* sets a value into the register */
+static inline void mchip_set(int reg, u32 v)
+{
+	mchip_sync(reg);
+	writel(v, meye.mchip_mmregs + reg);
+}
+
+/* get the register value */
+static inline u32 mchip_read(int reg)
+{
+	mchip_sync(reg);
+	return readl(meye.mchip_mmregs + reg);
+}
+
+/* wait for a register to become a particular value */
+static inline int mchip_delay(u32 reg, u32 v)
+{
+	int n = 10;
+	while (--n && mchip_read(reg) != v)
+		udelay(1);
+	return n;
+}
+
+/* setup subsampling */
+static void mchip_subsample(void)
+{
+	mchip_set(MCHIP_MCC_R_SAMPLING, meye.params.subsample);
+	mchip_set(MCHIP_MCC_R_XRANGE, mchip_hsize());
+	mchip_set(MCHIP_MCC_R_YRANGE, mchip_vsize());
+	mchip_set(MCHIP_MCC_B_XRANGE, mchip_hsize());
+	mchip_set(MCHIP_MCC_B_YRANGE, mchip_vsize());
+	mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
+}
+
+/* set the framerate into the mchip */
+static void mchip_set_framerate(void)
+{
+	mchip_set(MCHIP_HIC_S_RATE, meye.params.framerate);
+}
+
+/* load some huffman and quantisation tables into the VRJ chip ready
+   for JPEG compression */
+static void mchip_load_tables(void)
+{
+	int i;
+	int length;
+	u16 *tables;
+
+	tables = jpeg_huffman_tables(&length);
+	for (i = 0; i < length; i++)
+		writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
+
+	tables = jpeg_quantisation_tables(&length, meye.params.quality);
+	for (i = 0; i < length; i++)
+		writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
+}
+
+/* setup the VRJ parameters in the chip */
+static void mchip_vrj_setup(u8 mode)
+{
+	mchip_set(MCHIP_VRJ_BUS_MODE, 5);
+	mchip_set(MCHIP_VRJ_SIGNAL_ACTIVE_LEVEL, 0x1f);
+	mchip_set(MCHIP_VRJ_PDAT_USE, 1);
+	mchip_set(MCHIP_VRJ_IRQ_FLAG, 0xa0);
+	mchip_set(MCHIP_VRJ_MODE_SPECIFY, mode);
+	mchip_set(MCHIP_VRJ_NUM_LINES, mchip_vsize());
+	mchip_set(MCHIP_VRJ_NUM_PIXELS, mchip_hsize());
+	mchip_set(MCHIP_VRJ_NUM_COMPONENTS, 0x1b);
+	mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_LO, 0xFFFF);
+	mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_HI, 0xFFFF);
+	mchip_set(MCHIP_VRJ_COMP_DATA_FORMAT, 0xC);
+	mchip_set(MCHIP_VRJ_RESTART_INTERVAL, 0);
+	mchip_set(MCHIP_VRJ_SOF1, 0x601);
+	mchip_set(MCHIP_VRJ_SOF2, 0x1502);
+	mchip_set(MCHIP_VRJ_SOF3, 0x1503);
+	mchip_set(MCHIP_VRJ_SOF4, 0x1596);
+	mchip_set(MCHIP_VRJ_SOS, 0x0ed0);
+
+	mchip_load_tables();
+}
+
+/* sets the DMA parameters into the chip */
+static void mchip_dma_setup(dma_addr_t dma_addr)
+{
+	int i;
+
+	mchip_set(MCHIP_MM_PT_ADDR, (u32)dma_addr);
+	for (i = 0; i < 4; i++)
+		mchip_set(MCHIP_MM_FIR(i), 0);
+	meye.mchip_fnum = 0;
+}
+
+/* setup for DMA transfers - also zeros the framebuffer */
+static int mchip_dma_alloc(void)
+{
+	if (!meye.mchip_dmahandle)
+		if (ptable_alloc())
+			return -1;
+	return 0;
+}
+
+/* frees the DMA buffer */
+static void mchip_dma_free(void)
+{
+	if (meye.mchip_dmahandle) {
+		mchip_dma_setup(0);
+		ptable_free();
+	}
+}
+
+/* stop any existing HIC action and wait for any dma to complete then
+   reset the dma engine */
+static void mchip_hic_stop(void)
+{
+	int i, j;
+
+	meye.mchip_mode = MCHIP_HIC_MODE_NOOP;
+	if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY))
+		return;
+	for (i = 0; i < 20; ++i) {
+		mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
+		mchip_delay(MCHIP_HIC_CMD, 0);
+		for (j = 0; j < 100; ++j) {
+			if (mchip_delay(MCHIP_HIC_STATUS,
+					MCHIP_HIC_STATUS_IDLE))
+				return;
+			msleep(1);
+		}
+		printk(KERN_ERR "meye: need to reset HIC!\n");
+
+		mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET);
+		msleep(250);
+	}
+	printk(KERN_ERR "meye: resetting HIC hanged!\n");
+}
+
+/****************************************************************************/
+/* MCHIP frame processing functions                                         */
+/****************************************************************************/
+
+/* get the next ready frame from the dma engine */
+static u32 mchip_get_frame(void)
+{
+	return mchip_read(MCHIP_MM_FIR(meye.mchip_fnum));
+}
+
+/* frees the current frame from the dma engine */
+static void mchip_free_frame(void)
+{
+	mchip_set(MCHIP_MM_FIR(meye.mchip_fnum), 0);
+	meye.mchip_fnum++;
+	meye.mchip_fnum %= 4;
+}
+
+/* read one frame from the framebuffer assuming it was captured using
+   a uncompressed transfer */
+static void mchip_cont_read_frame(u32 v, u8 *buf, int size)
+{
+	int pt_id;
+
+	pt_id = (v >> 17) & 0x3FF;
+
+	ptable_copy(buf, pt_id, size, MCHIP_NB_PAGES);
+}
+
+/* read a compressed frame from the framebuffer */
+static int mchip_comp_read_frame(u32 v, u8 *buf, int size)
+{
+	int pt_start, pt_end, trailer;
+	int fsize;
+	int i;
+
+	pt_start = (v >> 19) & 0xFF;
+	pt_end = (v >> 11) & 0xFF;
+	trailer = (v >> 1) & 0x3FF;
+
+	if (pt_end < pt_start)
+		fsize = (MCHIP_NB_PAGES_MJPEG - pt_start) * PAGE_SIZE +
+			pt_end * PAGE_SIZE + trailer * 4;
+	else
+		fsize = (pt_end - pt_start) * PAGE_SIZE + trailer * 4;
+
+	if (fsize > size) {
+		printk(KERN_WARNING "meye: oversized compressed frame %d\n",
+		       fsize);
+		return -1;
+	}
+
+	ptable_copy(buf, pt_start, fsize, MCHIP_NB_PAGES_MJPEG);
+
+#ifdef MEYE_JPEG_CORRECTION
+
+	/* Some mchip generated jpeg frames are incorrect. In most
+	 * (all ?) of those cases, the final EOI (0xff 0xd9) marker
+	 * is not present at the end of the frame.
+	 *
+	 * Since adding the final marker is not enough to restore
+	 * the jpeg integrity, we drop the frame.
+	 */
+
+	for (i = fsize - 1; i > 0 && buf[i] == 0xff; i--) ;
+
+	if (i < 2 || buf[i - 1] != 0xff || buf[i] != 0xd9)
+		return -1;
+
+#endif
+
+	return fsize;
+}
+
+/* take a picture into SDRAM */
+static void mchip_take_picture(void)
+{
+	int i;
+
+	mchip_hic_stop();
+	mchip_subsample();
+	mchip_dma_setup(meye.mchip_dmahandle);
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_CAP);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+
+	for (i = 0; i < 100; ++i) {
+		if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
+			break;
+		msleep(1);
+	}
+}
+
+/* dma a previously taken picture into a buffer */
+static void mchip_get_picture(u8 *buf, int bufsize)
+{
+	u32 v;
+	int i;
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+	for (i = 0; i < 100; ++i) {
+		if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
+			break;
+		msleep(1);
+	}
+	for (i = 0; i < 4; ++i) {
+		v = mchip_get_frame();
+		if (v & MCHIP_MM_FIR_RDY) {
+			mchip_cont_read_frame(v, buf, bufsize);
+			break;
+		}
+		mchip_free_frame();
+	}
+}
+
+/* start continuous dma capture */
+static void mchip_continuous_start(void)
+{
+	mchip_hic_stop();
+	mchip_subsample();
+	mchip_set_framerate();
+	mchip_dma_setup(meye.mchip_dmahandle);
+
+	meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_OUT);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+}
+
+/* compress one frame into a buffer */
+static int mchip_compress_frame(u8 *buf, int bufsize)
+{
+	u32 v;
+	int len = -1, i;
+
+	mchip_vrj_setup(0x3f);
+	udelay(50);
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_COMP);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+	for (i = 0; i < 100; ++i) {
+		if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
+			break;
+		msleep(1);
+	}
+
+	for (i = 0; i < 4; ++i) {
+		v = mchip_get_frame();
+		if (v & MCHIP_MM_FIR_RDY) {
+			len = mchip_comp_read_frame(v, buf, bufsize);
+			break;
+		}
+		mchip_free_frame();
+	}
+	return len;
+}
+
+#if 0
+/* uncompress one image into a buffer */
+static int mchip_uncompress_frame(u8 *img, int imgsize, u8 *buf, int bufsize)
+{
+	mchip_vrj_setup(0x3f);
+	udelay(50);
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_DECOMP);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+
+	return mchip_comp_read_frame(buf, bufsize);
+}
+#endif
+
+/* start continuous compressed capture */
+static void mchip_cont_compression_start(void)
+{
+	mchip_hic_stop();
+	mchip_vrj_setup(0x3f);
+	mchip_subsample();
+	mchip_set_framerate();
+	mchip_dma_setup(meye.mchip_dmahandle);
+
+	meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
+
+	mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_COMP);
+	mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
+
+	mchip_delay(MCHIP_HIC_CMD, 0);
+}
+
+/****************************************************************************/
+/* Interrupt handling                                                       */
+/****************************************************************************/
+
+static irqreturn_t meye_irq(int irq, void *dev_id)
+{
+	u32 v;
+	int reqnr;
+	static int sequence;
+
+	v = mchip_read(MCHIP_MM_INTA);
+
+	if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT &&
+	    meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
+		return IRQ_NONE;
+
+again:
+	v = mchip_get_frame();
+	if (!(v & MCHIP_MM_FIR_RDY))
+		return IRQ_HANDLED;
+
+	if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) {
+		if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
+			      sizeof(int), &meye.grabq_lock) != sizeof(int)) {
+			mchip_free_frame();
+			return IRQ_HANDLED;
+		}
+		mchip_cont_read_frame(v, meye.grab_fbuffer + gbufsize * reqnr,
+				      mchip_hsize() * mchip_vsize() * 2);
+		meye.grab_buffer[reqnr].size = mchip_hsize() * mchip_vsize() * 2;
+		meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
+		meye.grab_buffer[reqnr].ts = ktime_get_ns();
+		meye.grab_buffer[reqnr].sequence = sequence++;
+		kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
+				sizeof(int), &meye.doneq_lock);
+		wake_up_interruptible(&meye.proc_list);
+	} else {
+		int size;
+		size = mchip_comp_read_frame(v, meye.grab_temp, gbufsize);
+		if (size == -1) {
+			mchip_free_frame();
+			goto again;
+		}
+		if (kfifo_out_locked(&meye.grabq, (unsigned char *)&reqnr,
+			      sizeof(int), &meye.grabq_lock) != sizeof(int)) {
+			mchip_free_frame();
+			goto again;
+		}
+		memcpy(meye.grab_fbuffer + gbufsize * reqnr, meye.grab_temp,
+		       size);
+		meye.grab_buffer[reqnr].size = size;
+		meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
+		meye.grab_buffer[reqnr].ts = ktime_get_ns();
+		meye.grab_buffer[reqnr].sequence = sequence++;
+		kfifo_in_locked(&meye.doneq, (unsigned char *)&reqnr,
+				sizeof(int), &meye.doneq_lock);
+		wake_up_interruptible(&meye.proc_list);
+	}
+	mchip_free_frame();
+	goto again;
+}
+
+/****************************************************************************/
+/* video4linux integration                                                  */
+/****************************************************************************/
+
+static int meye_open(struct file *file)
+{
+	int i;
+
+	if (test_and_set_bit(0, &meye.in_use))
+		return -EBUSY;
+
+	mchip_hic_stop();
+
+	if (mchip_dma_alloc()) {
+		printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
+		clear_bit(0, &meye.in_use);
+		return -ENOBUFS;
+	}
+
+	for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
+		meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
+	kfifo_reset(&meye.grabq);
+	kfifo_reset(&meye.doneq);
+	return v4l2_fh_open(file);
+}
+
+static int meye_release(struct file *file)
+{
+	mchip_hic_stop();
+	mchip_dma_free();
+	clear_bit(0, &meye.in_use);
+	return v4l2_fh_release(file);
+}
+
+static int meyeioc_g_params(struct meye_params *p)
+{
+	*p = meye.params;
+	return 0;
+}
+
+static int meyeioc_s_params(struct meye_params *jp)
+{
+	if (jp->subsample > 1)
+		return -EINVAL;
+
+	if (jp->quality > 10)
+		return -EINVAL;
+
+	if (jp->sharpness > 63 || jp->agc > 63 || jp->picture > 63)
+		return -EINVAL;
+
+	if (jp->framerate > 31)
+		return -EINVAL;
+
+	mutex_lock(&meye.lock);
+
+	if (meye.params.subsample != jp->subsample ||
+	    meye.params.quality != jp->quality)
+		mchip_hic_stop();	/* need restart */
+
+	meye.params = *jp;
+	sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERASHARPNESS,
+			      meye.params.sharpness);
+	sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC,
+			      meye.params.agc);
+	sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE,
+			      meye.params.picture);
+	mutex_unlock(&meye.lock);
+
+	return 0;
+}
+
+static int meyeioc_qbuf_capt(int *nb)
+{
+	if (!meye.grab_fbuffer)
+		return -EINVAL;
+
+	if (*nb >= gbuffers)
+		return -EINVAL;
+
+	if (*nb < 0) {
+		/* stop capture */
+		mchip_hic_stop();
+		return 0;
+	}
+
+	i