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percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
346 lines
9.4 KiB
C
346 lines
9.4 KiB
C
/*
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* adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
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*
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* Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
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*
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* Based on adv7176 driver by:
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*
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* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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* - some corrections for Pinnacle Systems Inc. DC10plus card.
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*
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* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
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* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/ioctl.h>
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#include <asm/uaccess.h>
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#include <linux/i2c.h>
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#include <linux/i2c-id.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/v4l2-i2c-drv.h>
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MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
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MODULE_AUTHOR("Maxim Yevtyushkin");
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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/* ----------------------------------------------------------------------- */
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struct adv7170 {
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struct v4l2_subdev sd;
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unsigned char reg[128];
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v4l2_std_id norm;
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int input;
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};
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static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct adv7170, sd);
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}
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static char *inputs[] = { "pass_through", "play_back" };
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/* ----------------------------------------------------------------------- */
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static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct adv7170 *encoder = to_adv7170(sd);
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encoder->reg[reg] = value;
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int adv7170_write_block(struct v4l2_subdev *sd,
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const u8 *data, unsigned int len)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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struct adv7170 *encoder = to_adv7170(sd);
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int ret = -1;
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u8 reg;
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/* the adv7170 has an autoincrement function, use it if
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* the adapter understands raw I2C */
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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/* do raw I2C, not smbus compatible */
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u8 block_data[32];
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int block_len;
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while (len >= 2) {
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block_len = 0;
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block_data[block_len++] = reg = data[0];
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do {
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block_data[block_len++] =
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encoder->reg[reg++] = data[1];
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len -= 2;
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data += 2;
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} while (len >= 2 && data[0] == reg && block_len < 32);
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ret = i2c_master_send(client, block_data, block_len);
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if (ret < 0)
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break;
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}
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} else {
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/* do some slow I2C emulation kind of thing */
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while (len >= 2) {
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reg = *data++;
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ret = adv7170_write(sd, reg, *data++);
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if (ret < 0)
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break;
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len -= 2;
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}
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}
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return ret;
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}
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/* ----------------------------------------------------------------------- */
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#define TR0MODE 0x4c
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#define TR0RST 0x80
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#define TR1CAPT 0x00
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#define TR1PLAY 0x00
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static const unsigned char init_NTSC[] = {
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0x00, 0x10, /* MR0 */
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0x01, 0x20, /* MR1 */
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0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
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0x03, 0x80, /* MR3 */
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0x04, 0x30, /* MR4 */
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0x05, 0x00, /* Reserved */
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0x06, 0x00, /* Reserved */
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0x07, TR0MODE, /* TM0 */
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0x08, TR1CAPT, /* TM1 */
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0x09, 0x16, /* Fsc0 */
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0x0a, 0x7c, /* Fsc1 */
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0x0b, 0xf0, /* Fsc2 */
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0x0c, 0x21, /* Fsc3 */
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0x0d, 0x00, /* Subcarrier Phase */
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0x0e, 0x00, /* Closed Capt. Ext 0 */
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0x0f, 0x00, /* Closed Capt. Ext 1 */
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0x10, 0x00, /* Closed Capt. 0 */
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0x11, 0x00, /* Closed Capt. 1 */
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0x12, 0x00, /* Pedestal Ctl 0 */
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0x13, 0x00, /* Pedestal Ctl 1 */
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0x14, 0x00, /* Pedestal Ctl 2 */
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0x15, 0x00, /* Pedestal Ctl 3 */
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0x16, 0x00, /* CGMS_WSS_0 */
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0x17, 0x00, /* CGMS_WSS_1 */
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0x18, 0x00, /* CGMS_WSS_2 */
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0x19, 0x00, /* Teletext Ctl */
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};
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static const unsigned char init_PAL[] = {
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0x00, 0x71, /* MR0 */
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0x01, 0x20, /* MR1 */
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0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
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0x03, 0x80, /* MR3 */
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0x04, 0x30, /* MR4 */
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0x05, 0x00, /* Reserved */
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0x06, 0x00, /* Reserved */
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0x07, TR0MODE, /* TM0 */
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0x08, TR1CAPT, /* TM1 */
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0x09, 0xcb, /* Fsc0 */
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0x0a, 0x8a, /* Fsc1 */
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0x0b, 0x09, /* Fsc2 */
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0x0c, 0x2a, /* Fsc3 */
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0x0d, 0x00, /* Subcarrier Phase */
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0x0e, 0x00, /* Closed Capt. Ext 0 */
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0x0f, 0x00, /* Closed Capt. Ext 1 */
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0x10, 0x00, /* Closed Capt. 0 */
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0x11, 0x00, /* Closed Capt. 1 */
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0x12, 0x00, /* Pedestal Ctl 0 */
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0x13, 0x00, /* Pedestal Ctl 1 */
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0x14, 0x00, /* Pedestal Ctl 2 */
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0x15, 0x00, /* Pedestal Ctl 3 */
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0x16, 0x00, /* CGMS_WSS_0 */
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0x17, 0x00, /* CGMS_WSS_1 */
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0x18, 0x00, /* CGMS_WSS_2 */
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0x19, 0x00, /* Teletext Ctl */
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};
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static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct adv7170 *encoder = to_adv7170(sd);
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v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
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if (std & V4L2_STD_NTSC) {
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adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
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if (encoder->input == 0)
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adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
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adv7170_write(sd, 0x07, TR0MODE | TR0RST);
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adv7170_write(sd, 0x07, TR0MODE);
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} else if (std & V4L2_STD_PAL) {
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adv7170_write_block(sd, init_PAL, sizeof(init_PAL));
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if (encoder->input == 0)
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adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
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adv7170_write(sd, 0x07, TR0MODE | TR0RST);
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adv7170_write(sd, 0x07, TR0MODE);
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} else {
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v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
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(unsigned long long)std);
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return -EINVAL;
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}
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v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
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encoder->norm = std;
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return 0;
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}
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static int adv7170_s_routing(struct v4l2_subdev *sd,
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u32 input, u32 output, u32 config)
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{
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struct adv7170 *encoder = to_adv7170(sd);
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/* RJ: input = 0: input is from decoder
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input = 1: input is from ZR36060
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input = 2: color bar */
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v4l2_dbg(1, debug, sd, "set input from %s\n",
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input == 0 ? "decoder" : "ZR36060");
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switch (input) {
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case 0:
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adv7170_write(sd, 0x01, 0x20);
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adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */
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adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
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adv7170_write(sd, 0x07, TR0MODE | TR0RST);
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adv7170_write(sd, 0x07, TR0MODE);
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/* udelay(10); */
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break;
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case 1:
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adv7170_write(sd, 0x01, 0x00);
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adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */
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adv7170_write(sd, 0x02, 0x08);
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adv7170_write(sd, 0x07, TR0MODE | TR0RST);
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adv7170_write(sd, 0x07, TR0MODE);
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/* udelay(10); */
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break;
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default:
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v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
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return -EINVAL;
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}
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v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
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encoder->input = input;
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return 0;
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}
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static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7170, 0);
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_subdev_core_ops adv7170_core_ops = {
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.g_chip_ident = adv7170_g_chip_ident,
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};
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static const struct v4l2_subdev_video_ops adv7170_video_ops = {
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.s_std_output = adv7170_s_std_output,
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.s_routing = adv7170_s_routing,
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};
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static const struct v4l2_subdev_ops adv7170_ops = {
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.core = &adv7170_core_ops,
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.video = &adv7170_video_ops,
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};
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/* ----------------------------------------------------------------------- */
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static int adv7170_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct adv7170 *encoder;
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struct v4l2_subdev *sd;
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int i;
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -ENODEV;
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL);
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if (encoder == NULL)
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return -ENOMEM;
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sd = &encoder->sd;
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v4l2_i2c_subdev_init(sd, client, &adv7170_ops);
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encoder->norm = V4L2_STD_NTSC;
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encoder->input = 0;
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i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
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if (i >= 0) {
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i = adv7170_write(sd, 0x07, TR0MODE | TR0RST);
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i = adv7170_write(sd, 0x07, TR0MODE);
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i = adv7170_read(sd, 0x12);
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v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
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}
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if (i < 0)
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v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
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return 0;
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}
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static int adv7170_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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v4l2_device_unregister_subdev(sd);
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kfree(to_adv7170(sd));
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct i2c_device_id adv7170_id[] = {
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{ "adv7170", 0 },
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{ "adv7171", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adv7170_id);
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static struct v4l2_i2c_driver_data v4l2_i2c_data = {
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.name = "adv7170",
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.probe = adv7170_probe,
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.remove = adv7170_remove,
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.id_table = adv7170_id,
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};
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