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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 17:49:05 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 17:49:05 +0900
commit0b8e74c6f44094189dbe78baf4101acc7570c6af (patch)
tree6440561d09fb71ba5928664604ec92f29940be6b /drivers/media/pci/zoran/zr36060.c
parent7f60ba388f5b9dd8b0da463b394412dace3ab814 (diff)
parentbd0d10498826ed150da5e4c45baf8b9c7088fb71 (diff)
downloadop-kernel-dev-0b8e74c6f44094189dbe78baf4101acc7570c6af.zip
op-kernel-dev-0b8e74c6f44094189dbe78baf4101acc7570c6af.tar.gz
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: "The first part of the media updates for Kernel 3.7. This series contain: - A major tree renaming patch series: now, drivers are organized internally by their used bus, instead of by V4L2 and/or DVB API, providing a cleaner driver location for hybrid drivers that implement both APIs, and allowing to cleanup the Kconfig items and make them more intuitive for the end user; - Media Kernel developers are typically very lazy with their duties of keeping the MAINTAINERS entries for their drivers updated. As now the tree is more organized, we're doing an effort to add/update those entries for the drivers that aren't currently orphan; - Several DVB USB drivers got moved to a new DVB USB v2 core; the new core fixes several bugs (as the existing one that got bitroted). Now, suspend/resume finally started to work fine (at least with some devices - we should expect more work with regards to it); - added multistream support for DVB-T2, and unified the API for DVB-S2 and ISDB-S. Backward binary support is preserved; - as usual, a few new drivers, some V4L2 core improvements and lots of drivers improvements and fixes. There are some points to notice on this series: 1) you should expect a trivial merge conflict on your tree, with the removal of Documentation/feature-removal-schedule.txt: this series would be adding two additional entries there. I opted to not rebase it due to this recent change; 2) With regards to the PCTV 520e udev-related breakage, I opted to fix it in a way that the patches can be backported to 3.5 even without your firmware fix patch. This way, Greg doesn't need to rush backporting your patch (as there are still the firmware cache and firmware path customization issues to be addressed there). I'll send later a patch (likely after the end of the merge window) reverting the rest of the DRX-K async firmware request, fully restoring its original behaviour to allow media drivers to initialize everything serialized as before for 3.7 and upper. 3) I'm planning to work on this weekend to test the DMABUF patches for V4L2. The patches are on my queue for several Kernel cycles, but, up to now, there is/was no way to test the series locally. I have some concerns about this particular changeset with regards to security issues, and with regards to the replacement of the old VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to GPU drivers change. The Overlay API allows direct PCI2PCI transfers from a media capture card into the GPU framebuffer, but its API is crappy. Also, the only existing X11 driver that implements it requires a XV extension that is not available anymore on modern drivers. The DMABUF can do the same thing, but with it is promising to be a properly-designed API. If I can successfully test this series and be happy with it, I should be asking you to pull them next week." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits) em28xx: regression fix: use DRX-K sync firmware requests on em28xx drxk: allow loading firmware synchrousnously em28xx: Make all em28xx extensions to be initialized asynchronously [media] tda18271: properly report read errors in tda18271_get_id [media] tda18271: delay IR & RF calibration until init() if delay_cal is set [media] MAINTAINERS: add Michael Krufky as tda827x maintainer [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer [media] MAINTAINERS: add Michael Krufky as cxusb maintainer [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend() [media] exynos-gsc: Add missing static storage class specifiers [media] exynos-gsc: Remove <linux/version.h> header file inclusion [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs() [media] s5p-tv: Fix potential NULL pointer dereference error [media] s5k6aa: Fix possible NULL pointer dereference ...
Diffstat (limited to 'drivers/media/pci/zoran/zr36060.c')
-rw-r--r--drivers/media/pci/zoran/zr36060.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/drivers/media/pci/zoran/zr36060.c b/drivers/media/pci/zoran/zr36060.c
new file mode 100644
index 0000000..f08546f
--- /dev/null
+++ b/drivers/media/pci/zoran/zr36060.c
@@ -0,0 +1,1010 @@
+/*
+ * Zoran ZR36060 basic configuration functions
+ *
+ * Copyright (C) 2002 Laurent Pinchart <laurent.pinchart@skynet.be>
+ *
+ * $Id: zr36060.c,v 1.1.2.22 2003/05/06 09:35:36 rbultje Exp $
+ *
+ * ------------------------------------------------------------------------
+ *
+ * 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
+ * (at your option) 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * ------------------------------------------------------------------------
+ */
+
+#define ZR060_VERSION "v0.7"
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <linux/types.h>
+#include <linux/wait.h>
+
+/* I/O commands, error codes */
+#include <asm/io.h>
+
+/* headerfile of this module */
+#include "zr36060.h"
+
+/* codec io API */
+#include "videocodec.h"
+
+/* it doesn't make sense to have more than 20 or so,
+ just to prevent some unwanted loops */
+#define MAX_CODECS 20
+
+/* amount of chips attached via this driver */
+static int zr36060_codecs;
+
+static bool low_bitrate;
+module_param(low_bitrate, bool, 0);
+MODULE_PARM_DESC(low_bitrate, "Buz compatibility option, halves bitrate");
+
+/* debugging is available via module parameter */
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-4)");
+
+#define dprintk(num, format, args...) \
+ do { \
+ if (debug >= num) \
+ printk(format, ##args); \
+ } while (0)
+
+/* =========================================================================
+ Local hardware I/O functions:
+
+ read/write via codec layer (registers are located in the master device)
+ ========================================================================= */
+
+/* read and write functions */
+static u8
+zr36060_read (struct zr36060 *ptr,
+ u16 reg)
+{
+ u8 value = 0;
+
+ // just in case something is wrong...
+ if (ptr->codec->master_data->readreg)
+ value = (ptr->codec->master_data->readreg(ptr->codec,
+ reg)) & 0xff;
+ else
+ dprintk(1,
+ KERN_ERR "%s: invalid I/O setup, nothing read!\n",
+ ptr->name);
+
+ //dprintk(4, "%s: reading from 0x%04x: %02x\n",ptr->name,reg,value);
+
+ return value;
+}
+
+static void
+zr36060_write(struct zr36060 *ptr,
+ u16 reg,
+ u8 value)
+{
+ //dprintk(4, "%s: writing 0x%02x to 0x%04x\n",ptr->name,value,reg);
+ dprintk(4, "0x%02x @0x%04x\n", value, reg);
+
+ // just in case something is wrong...
+ if (ptr->codec->master_data->writereg)
+ ptr->codec->master_data->writereg(ptr->codec, reg, value);
+ else
+ dprintk(1,
+ KERN_ERR
+ "%s: invalid I/O setup, nothing written!\n",
+ ptr->name);
+}
+
+/* =========================================================================
+ Local helper function:
+
+ status read
+ ========================================================================= */
+
+/* status is kept in datastructure */
+static u8
+zr36060_read_status (struct zr36060 *ptr)
+{
+ ptr->status = zr36060_read(ptr, ZR060_CFSR);
+
+ zr36060_read(ptr, 0);
+ return ptr->status;
+}
+
+/* =========================================================================
+ Local helper function:
+
+ scale factor read
+ ========================================================================= */
+
+/* scale factor is kept in datastructure */
+static u16
+zr36060_read_scalefactor (struct zr36060 *ptr)
+{
+ ptr->scalefact = (zr36060_read(ptr, ZR060_SF_HI) << 8) |
+ (zr36060_read(ptr, ZR060_SF_LO) & 0xFF);
+
+ /* leave 0 selected for an eventually GO from master */
+ zr36060_read(ptr, 0);
+ return ptr->scalefact;
+}
+
+/* =========================================================================
+ Local helper function:
+
+ wait if codec is ready to proceed (end of processing) or time is over
+ ========================================================================= */
+
+static void
+zr36060_wait_end (struct zr36060 *ptr)
+{
+ int i = 0;
+
+ while (zr36060_read_status(ptr) & ZR060_CFSR_Busy) {
+ udelay(1);
+ if (i++ > 200000) { // 200ms, there is for sure something wrong!!!
+ dprintk(1,
+ "%s: timeout at wait_end (last status: 0x%02x)\n",
+ ptr->name, ptr->status);
+ break;
+ }
+ }
+}
+
+/* =========================================================================
+ Local helper function:
+
+ basic test of "connectivity", writes/reads to/from memory the SOF marker
+ ========================================================================= */
+
+static int
+zr36060_basic_test (struct zr36060 *ptr)
+{
+ if ((zr36060_read(ptr, ZR060_IDR_DEV) != 0x33) &&
+ (zr36060_read(ptr, ZR060_IDR_REV) != 0x01)) {
+ dprintk(1,
+ KERN_ERR
+ "%s: attach failed, can't connect to jpeg processor!\n",
+ ptr->name);
+ return -ENXIO;
+ }
+
+ zr36060_wait_end(ptr);
+ if (ptr->status & ZR060_CFSR_Busy) {
+ dprintk(1,
+ KERN_ERR
+ "%s: attach failed, jpeg processor failed (end flag)!\n",
+ ptr->name);
+ return -EBUSY;
+ }
+
+ return 0; /* looks good! */
+}
+
+/* =========================================================================
+ Local helper function:
+
+ simple loop for pushing the init datasets
+ ========================================================================= */
+
+static int
+zr36060_pushit (struct zr36060 *ptr,
+ u16 startreg,
+ u16 len,
+ const char *data)
+{
+ int i = 0;
+
+ dprintk(4, "%s: write data block to 0x%04x (len=%d)\n", ptr->name,
+ startreg, len);
+ while (i < len) {
+ zr36060_write(ptr, startreg++, data[i++]);
+ }
+
+ return i;
+}
+
+/* =========================================================================
+ Basic datasets:
+
+ jpeg baseline setup data (you find it on lots places in internet, or just
+ extract it from any regular .jpg image...)
+
+ Could be variable, but until it's not needed it they are just fixed to save
+ memory. Otherwise expand zr36060 structure with arrays, push the values to
+ it and initialize from there, as e.g. the linux zr36057/60 driver does it.
+ ========================================================================= */
+
+static const char zr36060_dqt[0x86] = {
+ 0xff, 0xdb, //Marker: DQT
+ 0x00, 0x84, //Length: 2*65+2
+ 0x00, //Pq,Tq first table
+ 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
+ 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
+ 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
+ 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
+ 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
+ 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
+ 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
+ 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
+ 0x01, //Pq,Tq second table
+ 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
+ 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
+ 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
+};
+
+static const char zr36060_dht[0x1a4] = {
+ 0xff, 0xc4, //Marker: DHT
+ 0x01, 0xa2, //Length: 2*AC, 2*DC
+ 0x00, //DC first table
+ 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
+ 0x01, //DC second table
+ 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
+ 0x10, //AC first table
+ 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
+ 0x05, 0x05, 0x04, 0x04, 0x00, 0x00,
+ 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11,
+ 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
+ 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
+ 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24,
+ 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17,
+ 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34,
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
+ 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
+ 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
+ 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+ 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
+ 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
+ 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
+ 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9,
+ 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8,
+ 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
+ 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+ 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+ 0xF8, 0xF9, 0xFA,
+ 0x11, //AC second table
+ 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
+ 0x07, 0x05, 0x04, 0x04, 0x00, 0x01,
+ 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
+ 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
+ 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
+ 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62,
+ 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25,
+ 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
+ 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
+ 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
+ 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
+ 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+ 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+ 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+ 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
+ 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
+ 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+ 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8,
+ 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
+ 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
+ 0xF9, 0xFA
+};
+
+/* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
+#define NO_OF_COMPONENTS 0x3 //Y,U,V
+#define BASELINE_PRECISION 0x8 //MCU size (?)
+static const char zr36060_tq[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's QT
+static const char zr36060_td[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's DC
+static const char zr36060_ta[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's AC
+
+/* horizontal 422 decimation setup (maybe we support 411 or so later, too) */
+static const char zr36060_decimation_h[8] = { 2, 1, 1, 0, 0, 0, 0, 0 };
+static const char zr36060_decimation_v[8] = { 1, 1, 1, 0, 0, 0, 0, 0 };
+
+/* =========================================================================
+ Local helper functions:
+
+ calculation and setup of parameter-dependent JPEG baseline segments
+ (needed for compression only)
+ ========================================================================= */
+
+/* ------------------------------------------------------------------------- */
+
+/* SOF (start of frame) segment depends on width, height and sampling ratio
+ of each color component */
+
+static int
+zr36060_set_sof (struct zr36060 *ptr)
+{
+ char sof_data[34]; // max. size of register set
+ int i;
+
+ dprintk(3, "%s: write SOF (%dx%d, %d components)\n", ptr->name,
+ ptr->width, ptr->height, NO_OF_COMPONENTS);
+ sof_data[0] = 0xff;
+ sof_data[1] = 0xc0;
+ sof_data[2] = 0x00;
+ sof_data[3] = (3 * NO_OF_COMPONENTS) + 8;
+ sof_data[4] = BASELINE_PRECISION; // only '8' possible with zr36060
+ sof_data[5] = (ptr->height) >> 8;
+ sof_data[6] = (ptr->height) & 0xff;
+ sof_data[7] = (ptr->width) >> 8;
+ sof_data[8] = (ptr->width) & 0xff;
+ sof_data[9] = NO_OF_COMPONENTS;
+ for (i = 0; i < NO_OF_COMPONENTS; i++) {
+ sof_data[10 + (i * 3)] = i; // index identifier
+ sof_data[11 + (i * 3)] = (ptr->h_samp_ratio[i] << 4) |
+ (ptr->v_samp_ratio[i]); // sampling ratios
+ sof_data[12 + (i * 3)] = zr36060_tq[i]; // Q table selection
+ }
+ return zr36060_pushit(ptr, ZR060_SOF_IDX,
+ (3 * NO_OF_COMPONENTS) + 10, sof_data);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/* SOS (start of scan) segment depends on the used scan components
+ of each color component */
+
+static int
+zr36060_set_sos (struct zr36060 *ptr)
+{
+ char sos_data[16]; // max. size of register set
+ int i;
+
+ dprintk(3, "%s: write SOS\n", ptr->name);
+ sos_data[0] = 0xff;
+ sos_data[1] = 0xda;
+ sos_data[2] = 0x00;
+ sos_data[3] = 2 + 1 + (2 * NO_OF_COMPONENTS) + 3;
+ sos_data[4] = NO_OF_COMPONENTS;
+ for (i = 0; i < NO_OF_COMPONENTS; i++) {
+ sos_data[5 + (i * 2)] = i; // index
+ sos_data[6 + (i * 2)] = (zr36060_td[i] << 4) |
+ zr36060_ta[i]; // AC/DC tbl.sel.
+ }
+ sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 2] = 00; // scan start
+ sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 3] = 0x3f;
+ sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 4] = 00;
+ return zr36060_pushit(ptr, ZR060_SOS_IDX,
+ 4 + 1 + (2 * NO_OF_COMPONENTS) + 3,
+ sos_data);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/* DRI (define restart interval) */
+
+static int
+zr36060_set_dri (struct zr36060 *ptr)
+{
+ char dri_data[6]; // max. size of register set
+
+ dprintk(3, "%s: write DRI\n", ptr->name);
+ dri_data[0] = 0xff;
+ dri_data[1] = 0xdd;
+ dri_data[2] = 0x00;
+ dri_data[3] = 0x04;
+ dri_data[4] = (ptr->dri) >> 8;
+ dri_data[5] = (ptr->dri) & 0xff;
+ return zr36060_pushit(ptr, ZR060_DRI_IDX, 6, dri_data);
+}
+
+/* =========================================================================
+ Setup function:
+
+ Setup compression/decompression of Zoran's JPEG processor
+ ( see also zoran 36060 manual )
+
+ ... sorry for the spaghetti code ...
+ ========================================================================= */
+static void
+zr36060_init (struct zr36060 *ptr)
+{
+ int sum = 0;
+ long bitcnt, tmp;
+
+ if (ptr->mode == CODEC_DO_COMPRESSION) {
+ dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* 060 communicates with 067 in master mode */
+ zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
+
+ /* Compression with or without variable scale factor */
+ /*FIXME: What about ptr->bitrate_ctrl? */
+ zr36060_write(ptr, ZR060_CMR,
+ ZR060_CMR_Comp | ZR060_CMR_Pass2 |
+ ZR060_CMR_BRB);
+
+ /* Must be zero */
+ zr36060_write(ptr, ZR060_MBZ, 0x00);
+ zr36060_write(ptr, ZR060_TCR_HI, 0x00);
+ zr36060_write(ptr, ZR060_TCR_LO, 0x00);
+
+ /* Disable all IRQs - no DataErr means autoreset */
+ zr36060_write(ptr, ZR060_IMR, 0);
+
+ /* volume control settings */
+ zr36060_write(ptr, ZR060_SF_HI, ptr->scalefact >> 8);
+ zr36060_write(ptr, ZR060_SF_LO, ptr->scalefact & 0xff);
+
+ zr36060_write(ptr, ZR060_AF_HI, 0xff);
+ zr36060_write(ptr, ZR060_AF_M, 0xff);
+ zr36060_write(ptr, ZR060_AF_LO, 0xff);
+
+ /* setup the variable jpeg tables */
+ sum += zr36060_set_sof(ptr);
+ sum += zr36060_set_sos(ptr);
+ sum += zr36060_set_dri(ptr);
+
+ /* setup the fixed jpeg tables - maybe variable, though -
+ * (see table init section above) */
+ sum +=
+ zr36060_pushit(ptr, ZR060_DQT_IDX, sizeof(zr36060_dqt),
+ zr36060_dqt);
+ sum +=
+ zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof(zr36060_dht),
+ zr36060_dht);
+ zr36060_write(ptr, ZR060_APP_IDX, 0xff);
+ zr36060_write(ptr, ZR060_APP_IDX + 1, 0xe0 + ptr->app.appn);
+ zr36060_write(ptr, ZR060_APP_IDX + 2, 0x00);
+ zr36060_write(ptr, ZR060_APP_IDX + 3, ptr->app.len + 2);
+ sum += zr36060_pushit(ptr, ZR060_APP_IDX + 4, 60,
+ ptr->app.data) + 4;
+ zr36060_write(ptr, ZR060_COM_IDX, 0xff);
+ zr36060_write(ptr, ZR060_COM_IDX + 1, 0xfe);
+ zr36060_write(ptr, ZR060_COM_IDX + 2, 0x00);
+ zr36060_write(ptr, ZR060_COM_IDX + 3, ptr->com.len + 2);
+ sum += zr36060_pushit(ptr, ZR060_COM_IDX + 4, 60,
+ ptr->com.data) + 4;
+
+ /* setup misc. data for compression (target code sizes) */
+
+ /* size of compressed code to reach without header data */
+ sum = ptr->real_code_vol - sum;
+ bitcnt = sum << 3; /* need the size in bits */
+
+ tmp = bitcnt >> 16;
+ dprintk(3,
+ "%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n",
+ ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
+ zr36060_write(ptr, ZR060_TCV_NET_HI, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_NET_MH, tmp & 0xff);
+ tmp = bitcnt & 0xffff;
+ zr36060_write(ptr, ZR060_TCV_NET_ML, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_NET_LO, tmp & 0xff);
+
+ bitcnt -= bitcnt >> 7; // bits without stuffing
+ bitcnt -= ((bitcnt * 5) >> 6); // bits without eob
+
+ tmp = bitcnt >> 16;
+ dprintk(3, "%s: code: nettobit=%ld, highnettobits=%ld\n",
+ ptr->name, bitcnt, tmp);
+ zr36060_write(ptr, ZR060_TCV_DATA_HI, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_DATA_MH, tmp & 0xff);
+ tmp = bitcnt & 0xffff;
+ zr36060_write(ptr, ZR060_TCV_DATA_ML, tmp >> 8);
+ zr36060_write(ptr, ZR060_TCV_DATA_LO, tmp & 0xff);
+
+ /* JPEG markers to be included in the compressed stream */
+ zr36060_write(ptr, ZR060_MER,
+ ZR060_MER_DQT | ZR060_MER_DHT |
+ ((ptr->com.len > 0) ? ZR060_MER_Com : 0) |
+ ((ptr->app.len > 0) ? ZR060_MER_App : 0));
+
+ /* Setup the Video Frontend */
+ /* Limit pixel range to 16..235 as per CCIR-601 */
+ zr36060_write(ptr, ZR060_VCR, ZR060_VCR_Range);
+
+ } else {
+ dprintk(2, "%s: EXPANSION SETUP\n", ptr->name);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* 060 communicates with 067 in master mode */
+ zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
+
+ /* Decompression */
+ zr36060_write(ptr, ZR060_CMR, 0);
+
+ /* Must be zero */
+ zr36060_write(ptr, ZR060_MBZ, 0x00);
+ zr36060_write(ptr, ZR060_TCR_HI, 0x00);
+ zr36060_write(ptr, ZR060_TCR_LO, 0x00);
+
+ /* Disable all IRQs - no DataErr means autoreset */
+ zr36060_write(ptr, ZR060_IMR, 0);
+
+ /* setup misc. data for expansion */
+ zr36060_write(ptr, ZR060_MER, 0);
+
+ /* setup the fixed jpeg tables - maybe variable, though -
+ * (see table init section above) */
+ zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof(zr36060_dht),
+ zr36060_dht);
+
+ /* Setup the Video Frontend */
+ //zr36060_write(ptr, ZR060_VCR, ZR060_VCR_FIExt);
+ //this doesn't seem right and doesn't work...
+ zr36060_write(ptr, ZR060_VCR, ZR060_VCR_Range);
+ }
+
+ /* Load the tables */
+ zr36060_write(ptr, ZR060_LOAD,
+ ZR060_LOAD_SyncRst | ZR060_LOAD_Load);
+ zr36060_wait_end(ptr);
+ dprintk(2, "%s: Status after table preload: 0x%02x\n", ptr->name,
+ ptr->status);
+
+ if (ptr->status & ZR060_CFSR_Busy) {
+ dprintk(1, KERN_ERR "%s: init aborted!\n", ptr->name);
+ return; // something is wrong, its timed out!!!!
+ }
+}
+
+/* =========================================================================
+ CODEC API FUNCTIONS
+
+ this functions are accessed by the master via the API structure
+ ========================================================================= */
+
+/* set compression/expansion mode and launches codec -
+ this should be the last call from the master before starting processing */
+static int
+zr36060_set_mode (struct videocodec *codec,
+ int mode)
+{
+ struct zr36060 *ptr = (struct zr36060 *) codec->data;
+
+ dprintk(2, "%s: set_mode %d call\n", ptr->name, mode);
+
+ if ((mode != CODEC_DO_EXPANSION) && (mode != CODEC_DO_COMPRESSION))
+ return -EINVAL;
+
+ ptr->mode = mode;
+ zr36060_init(ptr);
+
+ return 0;
+}
+
+/* set picture size (norm is ignored as the codec doesn't know about it) */
+static int
+zr36060_set_video (struct videocodec *codec,
+ struct tvnorm *norm,
+ struct vfe_settings *cap,
+ struct vfe_polarity *pol)
+{
+ struct zr36060 *ptr = (struct zr36060 *) codec->data;
+ u32 reg;
+ int size;
+
+ dprintk(2, "%s: set_video %d/%d-%dx%d (%%%d) call\n", ptr->name,
+ cap->x, cap->y, cap->width, cap->height, cap->decimation);
+
+ /* if () return -EINVAL;
+ * trust the master driver that it knows what it does - so
+ * we allow invalid startx/y and norm for now ... */
+ ptr->width = cap->width / (cap->decimation & 0xff);
+ ptr->height = cap->height / (cap->decimation >> 8);
+
+ zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
+
+ /* Note that VSPol/HSPol bits in zr36060 have the opposite
+ * meaning of their zr360x7 counterparts with the same names
+ * N.b. for VSPol this is only true if FIVEdge = 0 (default,
+ * left unchanged here - in accordance with datasheet).
+ */
+ reg = (!pol->vsync_pol ? ZR060_VPR_VSPol : 0)
+ | (!pol->hsync_pol ? ZR060_VPR_HSPol : 0)
+ | (pol->field_pol ? ZR060_VPR_FIPol : 0)
+ | (pol->blank_pol ? ZR060_VPR_BLPol : 0)
+ | (pol->subimg_pol ? ZR060_VPR_SImgPol : 0)
+ | (pol->poe_pol ? ZR060_VPR_PoePol : 0)
+ | (pol->pvalid_pol ? ZR060_VPR_PValPol : 0)
+ | (pol->vclk_pol ? ZR060_VPR_VCLKPol : 0);
+ zr36060_write(ptr, ZR060_VPR, reg);
+
+ reg = 0;
+ switch (cap->decimation & 0xff) {
+ default:
+ case 1:
+ break;
+
+ case 2:
+ reg |= ZR060_SR_HScale2;
+ break;
+
+ case 4:
+ reg |= ZR060_SR_HScale4;
+ break;
+ }
+
+ switch (cap->decimation >> 8) {
+ default:
+ case 1:
+ break;
+
+ case 2:
+ reg |= ZR060_SR_VScale;
+ break;
+ }
+ zr36060_write(ptr, ZR060_SR, reg);
+
+ zr36060_write(ptr, ZR060_BCR_Y, 0x00);
+ zr36060_write(ptr, ZR060_BCR_U, 0x80);
+ zr36060_write(ptr, ZR060_BCR_V, 0x80);
+
+ /* sync generator */
+
+ reg = norm->Ht - 1; /* Vtotal */
+ zr36060_write(ptr, ZR060_SGR_VTOTAL_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_VTOTAL_LO, (reg >> 0) & 0xff);
+
+ reg = norm->Wt - 1; /* Htotal */
+ zr36060_write(ptr, ZR060_SGR_HTOTAL_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_HTOTAL_LO, (reg >> 0) & 0xff);
+
+ reg = 6 - 1; /* VsyncSize */
+ zr36060_write(ptr, ZR060_SGR_VSYNC, reg);
+
+ //reg = 30 - 1; /* HsyncSize */
+///*CP*/ reg = (zr->params.norm == 1 ? 57 : 68);
+ reg = 68;
+ zr36060_write(ptr, ZR060_SGR_HSYNC, reg);
+
+ reg = norm->VStart - 1; /* BVstart */
+ zr36060_write(ptr, ZR060_SGR_BVSTART, reg);
+
+ reg += norm->Ha / 2; /* BVend */
+ zr36060_write(ptr, ZR060_SGR_BVEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_BVEND_LO, (reg >> 0) & 0xff);
+
+ reg = norm->HStart - 1; /* BHstart */
+ zr36060_write(ptr, ZR060_SGR_BHSTART, reg);
+
+ reg += norm->Wa; /* BHend */
+ zr36060_write(ptr, ZR060_SGR_BHEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SGR_BHEND_LO, (reg >> 0) & 0xff);
+
+ /* active area */
+ reg = cap->y + norm->VStart; /* Vstart */
+ zr36060_write(ptr, ZR060_AAR_VSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_VSTART_LO, (reg >> 0) & 0xff);
+
+ reg += cap->height; /* Vend */
+ zr36060_write(ptr, ZR060_AAR_VEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_VEND_LO, (reg >> 0) & 0xff);
+
+ reg = cap->x + norm->HStart; /* Hstart */
+ zr36060_write(ptr, ZR060_AAR_HSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_HSTART_LO, (reg >> 0) & 0xff);
+
+ reg += cap->width; /* Hend */
+ zr36060_write(ptr, ZR060_AAR_HEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_AAR_HEND_LO, (reg >> 0) & 0xff);
+
+ /* subimage area */
+ reg = norm->VStart - 4; /* SVstart */
+ zr36060_write(ptr, ZR060_SWR_VSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_VSTART_LO, (reg >> 0) & 0xff);
+
+ reg += norm->Ha / 2 + 8; /* SVend */
+ zr36060_write(ptr, ZR060_SWR_VEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_VEND_LO, (reg >> 0) & 0xff);
+
+ reg = norm->HStart /*+ 64 */ - 4; /* SHstart */
+ zr36060_write(ptr, ZR060_SWR_HSTART_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_HSTART_LO, (reg >> 0) & 0xff);
+
+ reg += norm->Wa + 8; /* SHend */
+ zr36060_write(ptr, ZR060_SWR_HEND_HI, (reg >> 8) & 0xff);
+ zr36060_write(ptr, ZR060_SWR_HEND_LO, (reg >> 0) & 0xff);
+
+ size = ptr->width * ptr->height;
+ /* Target compressed field size in bits: */
+ size = size * 16; /* uncompressed size in bits */
+ /* (Ronald) by default, quality = 100 is a compression
+ * ratio 1:2. Setting low_bitrate (insmod option) sets
+ * it to 1:4 (instead of 1:2, zr36060 max) as limit because the
+ * buz can't handle more at decimation=1... Use low_bitrate if
+ * you have a Buz, unless you know what you're doing */
+ size = size * cap->quality / (low_bitrate ? 400 : 200);
+ /* Lower limit (arbitrary, 1 KB) */
+ if (size < 8192)
+ size = 8192;
+ /* Upper limit: 7/8 of the code buffers */
+ if (size > ptr->total_code_vol * 7)
+ size = ptr->total_code_vol * 7;
+
+ ptr->real_code_vol = size >> 3; /* in bytes */
+
+ /* the MBCVR is the *maximum* block volume, according to the
+ * JPEG ISO specs, this shouldn't be used, since that allows
+ * for the best encoding quality. So set it to it's max value */
+ reg = ptr->max_block_vol;
+ zr36060_write(ptr, ZR060_MBCVR, reg);
+
+ return 0;
+}
+
+/* additional control functions */
+static int
+zr36060_control (struct videocodec *codec,
+ int type,
+ int size,
+ void *data)
+{
+ struct zr36060 *ptr = (struct zr36060 *) codec->data;
+ int *ival = (int *) data;
+
+ dprintk(2, "%s: control %d call with %d byte\n", ptr->name, type,
+ size);
+
+ switch (type) {
+ case CODEC_G_STATUS: /* get last status */
+ if (size != sizeof(int))
+ return -EFAULT;
+ zr36060_read_status(ptr);
+ *ival = ptr->status;
+ break;
+
+ case CODEC_G_CODEC_MODE:
+ if (size != sizeof(int))
+ return -EFAULT;
+ *ival = CODEC_MODE_BJPG;
+ break;
+
+ case CODEC_S_CODEC_MODE:
+ if (size != sizeof(int))
+ return -EFAULT;
+ if (*ival != CODEC_MODE_BJPG)
+ return -EINVAL;
+ /* not needed, do nothing */
+ return 0;
+
+ case CODEC_G_VFE:
+ case CODEC_S_VFE:
+ /* not needed, do nothing */
+ return 0;
+
+ case CODEC_S_MMAP:
+ /* not available, give an error */
+ return -ENXIO;
+
+ case CODEC_G_JPEG_TDS_BYTE: /* get target volume in byte */
+ if (size != sizeof(int))
+ return -EFAULT;
+ *ival = ptr->total_code_vol;
+ break;
+
+ case CODEC_S_JPEG_TDS_BYTE: /* get target volume in byte */
+ if (size != sizeof(int))
+ return -EFAULT;
+ ptr->total_code_vol = *ival;
+ ptr->real_code_vol = (ptr->total_code_vol * 6) >> 3;
+ break;
+
+ case CODEC_G_JPEG_SCALE: /* get scaling factor */
+ if (size != sizeof(int))
+ return -EFAULT;
+ *ival = zr36060_read_scalefactor(ptr);
+ break;
+
+ case CODEC_S_JPEG_SCALE: /* set scaling factor */
+ if (size != sizeof(int))
+ return -EFAULT;
+ ptr->scalefact = *ival;
+ break;
+
+ case CODEC_G_JPEG_APP_DATA: { /* get appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ *app = ptr->app;
+ break;
+ }
+
+ case CODEC_S_JPEG_APP_DATA: { /* set appn marker data */
+ struct jpeg_app_marker *app = data;
+
+ if (size != sizeof(struct jpeg_app_marker))
+ return -EFAULT;
+
+ ptr->app = *app;
+ break;
+ }
+
+ case CODEC_G_JPEG_COM_DATA: { /* get comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ *com = ptr->com;
+ break;
+ }
+
+ case CODEC_S_JPEG_COM_DATA: { /* set comment marker data */
+ struct jpeg_com_marker *com = data;
+
+ if (size != sizeof(struct jpeg_com_marker))
+ return -EFAULT;
+
+ ptr->com = *com;
+ break;
+ }
+
+ default:
+ return -EINVAL;
+ }
+
+ return size;
+}
+
+/* =========================================================================
+ Exit and unregister function:
+
+ Deinitializes Zoran's JPEG processor
+ ========================================================================= */
+
+static int
+zr36060_unset (struct videocodec *codec)
+{
+ struct zr36060 *ptr = codec->data;
+
+ if (ptr) {
+ /* do wee need some codec deinit here, too ???? */
+
+ dprintk(1, "%s: finished codec #%d\n", ptr->name,
+ ptr->num);
+ kfree(ptr);
+ codec->data = NULL;
+
+ zr36060_codecs--;
+ return 0;
+ }
+
+ return -EFAULT;
+}
+
+/* =========================================================================
+ Setup and registry function:
+
+ Initializes Zoran's JPEG processor
+
+ Also sets pixel size, average code size, mode (compr./decompr.)
+ (the given size is determined by the processor with the video interface)
+ ========================================================================= */
+
+static int
+zr36060_setup (struct videocodec *codec)
+{
+ struct zr36060 *ptr;
+ int res;
+
+ dprintk(2, "zr36060: initializing MJPEG subsystem #%d.\n",
+ zr36060_codecs);
+
+ if (zr36060_codecs == MAX_CODECS) {
+ dprintk(1,
+ KERN_ERR "zr36060: Can't attach more codecs!\n");
+ return -ENOSPC;
+ }
+ //mem structure init
+ codec->data = ptr = kzalloc(sizeof(struct zr36060), GFP_KERNEL);
+ if (NULL == ptr) {
+ dprintk(1, KERN_ERR "zr36060: Can't get enough memory!\n");
+ return -ENOMEM;
+ }
+
+ snprintf(ptr->name, sizeof(ptr->name), "zr36060[%d]",
+ zr36060_codecs);
+ ptr->num = zr36060_codecs++;
+ ptr->codec = codec;
+
+ //testing
+ res = zr36060_basic_test(ptr);
+ if (res < 0) {
+ zr36060_unset(codec);
+ return res;
+ }
+ //final setup
+ memcpy(ptr->h_samp_ratio, zr36060_decimation_h, 8);
+ memcpy(ptr->v_samp_ratio, zr36060_decimation_v, 8);
+
+ ptr->bitrate_ctrl = 0; /* 0 or 1 - fixed file size flag
+ * (what is the difference?) */
+ ptr->mode = CODEC_DO_COMPRESSION;
+ ptr->width = 384;
+ ptr->height = 288;
+ ptr->total_code_vol = 16000; /* CHECKME */
+ ptr->real_code_vol = (ptr->total_code_vol * 6) >> 3;
+ ptr->max_block_vol = 240; /* CHECKME, was 120 is 240 */
+ ptr->scalefact = 0x100;
+ ptr->dri = 1; /* CHECKME, was 8 is 1 */
+
+ /* by default, no COM or APP markers - app should set those */
+ ptr->com.len = 0;
+ ptr->app.appn = 0;
+ ptr->app.len = 0;
+
+ zr36060_init(ptr);
+
+ dprintk(1, KERN_INFO "%s: codec attached and running\n",
+ ptr->name);
+
+ return 0;
+}
+
+static const struct videocodec zr36060_codec = {
+ .owner = THIS_MODULE,
+ .name = "zr36060",
+ .magic = 0L, // magic not used
+ .flags =
+ CODEC_FLAG_JPEG | CODEC_FLAG_HARDWARE | CODEC_FLAG_ENCODER |
+ CODEC_FLAG_DECODER | CODEC_FLAG_VFE,
+ .type = CODEC_TYPE_ZR36060,
+ .setup = zr36060_setup, // functionality
+ .unset = zr36060_unset,
+ .set_mode = zr36060_set_mode,
+ .set_video = zr36060_set_video,
+ .control = zr36060_control,
+ // others are not used
+};
+
+/* =========================================================================
+ HOOK IN DRIVER AS KERNEL MODULE
+ ========================================================================= */
+
+static int __init
+zr36060_init_module (void)
+{
+ //dprintk(1, "zr36060 driver %s\n",ZR060_VERSION);
+ zr36060_codecs = 0;
+ return videocodec_register(&zr36060_codec);
+}
+
+static void __exit
+zr36060_cleanup_module (void)
+{
+ if (zr36060_codecs) {
+ dprintk(1,
+ "zr36060: something's wrong - %d codecs left somehow.\n",
+ zr36060_codecs);
+ }
+
+ /* however, we can't just stay alive */
+ videocodec_unregister(&zr36060_codec);
+}
+
+module_init(zr36060_init_module);
+module_exit(zr36060_cleanup_module);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@skynet.be>");
+MODULE_DESCRIPTION("Driver module for ZR36060 jpeg processors "
+ ZR060_VERSION);
+MODULE_LICENSE("GPL");
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