forked from Minki/linux
5a0e3ad6af
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>
381 lines
7.8 KiB
C
381 lines
7.8 KiB
C
/*
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* Driver for LG ATSC lgdt3304 driver
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*
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* Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include "dvb_frontend.h"
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#include "lgdt3304.h"
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static unsigned int debug = 0;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug,"lgdt3304 debugging (default off)");
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#define dprintk(fmt, args...) if (debug) do {\
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printk("lgdt3304 debug: " fmt, ##args); } while (0)
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struct lgdt3304_state
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{
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struct dvb_frontend frontend;
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fe_modulation_t current_modulation;
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__u32 snr;
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__u32 current_frequency;
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__u8 addr;
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struct i2c_adapter *i2c;
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};
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static int i2c_write_demod_bytes (struct dvb_frontend *fe, __u8 *buf, int len)
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{
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struct lgdt3304_state *state = fe->demodulator_priv;
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struct i2c_msg i2cmsgs = {
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.addr = state->addr,
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.flags = 0,
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.len = 3,
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.buf = buf
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};
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int i;
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int err;
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for (i=0; i<len-1; i+=3){
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if((err = i2c_transfer(state->i2c, &i2cmsgs, 1))<0) {
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printk("%s i2c_transfer error %d\n", __func__, err);
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if (err < 0)
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return err;
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else
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return -EREMOTEIO;
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}
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i2cmsgs.buf += 3;
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}
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return 0;
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}
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static int lgdt3304_i2c_read_reg(struct dvb_frontend *fe, unsigned int reg)
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{
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struct lgdt3304_state *state = fe->demodulator_priv;
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struct i2c_msg i2cmsgs[2];
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int ret;
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__u8 buf;
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__u8 regbuf[2] = { reg>>8, reg&0xff };
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i2cmsgs[0].addr = state->addr;
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i2cmsgs[0].flags = 0;
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i2cmsgs[0].len = 2;
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i2cmsgs[0].buf = regbuf;
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i2cmsgs[1].addr = state->addr;
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i2cmsgs[1].flags = I2C_M_RD;
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i2cmsgs[1].len = 1;
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i2cmsgs[1].buf = &buf;
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if((ret = i2c_transfer(state->i2c, i2cmsgs, 2))<0) {
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printk("%s i2c_transfer error %d\n", __func__, ret);
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return ret;
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}
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return buf;
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}
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static int lgdt3304_i2c_write_reg(struct dvb_frontend *fe, int reg, int val)
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{
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struct lgdt3304_state *state = fe->demodulator_priv;
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char buffer[3] = { reg>>8, reg&0xff, val };
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int ret;
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struct i2c_msg i2cmsgs = {
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.addr = state->addr,
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.flags = 0,
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.len = 3,
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.buf=buffer
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};
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ret = i2c_transfer(state->i2c, &i2cmsgs, 1);
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if (ret != 1) {
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printk("%s i2c_transfer error %d\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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static int lgdt3304_soft_Reset(struct dvb_frontend *fe)
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{
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lgdt3304_i2c_write_reg(fe, 0x0002, 0x9a);
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lgdt3304_i2c_write_reg(fe, 0x0002, 0x9b);
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mdelay(200);
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return 0;
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}
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static int lgdt3304_set_parameters(struct dvb_frontend *fe, struct dvb_frontend_parameters *param) {
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int err = 0;
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static __u8 lgdt3304_vsb8_data[] = {
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/* 16bit , 8bit */
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/* regs , val */
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0x00, 0x00, 0x02,
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0x00, 0x00, 0x13,
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0x00, 0x0d, 0x02,
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0x00, 0x0e, 0x02,
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0x00, 0x12, 0x32,
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0x00, 0x13, 0xc4,
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0x01, 0x12, 0x17,
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0x01, 0x13, 0x15,
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0x01, 0x14, 0x18,
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0x01, 0x15, 0xff,
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0x01, 0x16, 0x2c,
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0x02, 0x14, 0x67,
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0x02, 0x24, 0x8d,
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0x04, 0x27, 0x12,
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0x04, 0x28, 0x4f,
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0x03, 0x08, 0x80,
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0x03, 0x09, 0x00,
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0x03, 0x0d, 0x00,
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0x03, 0x0e, 0x1c,
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0x03, 0x14, 0xe1,
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0x05, 0x0e, 0x5b,
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};
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/* not yet tested .. */
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static __u8 lgdt3304_qam64_data[] = {
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/* 16bit , 8bit */
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/* regs , val */
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0x00, 0x00, 0x18,
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0x00, 0x0d, 0x02,
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//0x00, 0x0e, 0x02,
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0x00, 0x12, 0x2a,
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0x00, 0x13, 0x00,
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0x03, 0x14, 0xe3,
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0x03, 0x0e, 0x1c,
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0x03, 0x08, 0x66,
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0x03, 0x09, 0x66,
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0x03, 0x0a, 0x08,
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0x03, 0x0b, 0x9b,
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0x05, 0x0e, 0x5b,
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};
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/* tested with KWorld a340 */
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static __u8 lgdt3304_qam256_data[] = {
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/* 16bit , 8bit */
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/* regs , val */
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0x00, 0x00, 0x01, //0x19,
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0x00, 0x12, 0x2a,
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0x00, 0x13, 0x80,
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0x00, 0x0d, 0x02,
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0x03, 0x14, 0xe3,
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0x03, 0x0e, 0x1c,
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0x03, 0x08, 0x66,
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0x03, 0x09, 0x66,
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0x03, 0x0a, 0x08,
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0x03, 0x0b, 0x9b,
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0x03, 0x0d, 0x14,
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//0x05, 0x0e, 0x5b,
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0x01, 0x06, 0x4a,
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0x01, 0x07, 0x3d,
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0x01, 0x08, 0x70,
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0x01, 0x09, 0xa3,
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0x05, 0x04, 0xfd,
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0x00, 0x0d, 0x82,
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0x05, 0x0e, 0x5b,
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0x05, 0x0e, 0x5b,
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0x00, 0x02, 0x9a,
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0x00, 0x02, 0x9b,
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0x00, 0x00, 0x01,
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0x00, 0x12, 0x2a,
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0x00, 0x13, 0x80,
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0x00, 0x0d, 0x02,
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0x03, 0x14, 0xe3,
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0x03, 0x0e, 0x1c,
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0x03, 0x08, 0x66,
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0x03, 0x09, 0x66,
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0x03, 0x0a, 0x08,
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0x03, 0x0b, 0x9b,
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0x03, 0x0d, 0x14,
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0x01, 0x06, 0x4a,
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0x01, 0x07, 0x3d,
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0x01, 0x08, 0x70,
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0x01, 0x09, 0xa3,
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0x05, 0x04, 0xfd,
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0x00, 0x0d, 0x82,
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0x05, 0x0e, 0x5b,
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};
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struct lgdt3304_state *state = fe->demodulator_priv;
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if (state->current_modulation != param->u.vsb.modulation) {
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switch(param->u.vsb.modulation) {
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case VSB_8:
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err = i2c_write_demod_bytes(fe, lgdt3304_vsb8_data,
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sizeof(lgdt3304_vsb8_data));
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break;
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case QAM_64:
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err = i2c_write_demod_bytes(fe, lgdt3304_qam64_data,
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sizeof(lgdt3304_qam64_data));
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break;
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case QAM_256:
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err = i2c_write_demod_bytes(fe, lgdt3304_qam256_data,
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sizeof(lgdt3304_qam256_data));
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break;
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default:
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break;
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}
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if (err) {
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printk("%s error setting modulation\n", __func__);
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} else {
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state->current_modulation = param->u.vsb.modulation;
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}
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}
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state->current_frequency = param->frequency;
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lgdt3304_soft_Reset(fe);
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if (fe->ops.tuner_ops.set_params)
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fe->ops.tuner_ops.set_params(fe, param);
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return 0;
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}
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static int lgdt3304_init(struct dvb_frontend *fe) {
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return 0;
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}
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static int lgdt3304_sleep(struct dvb_frontend *fe) {
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return 0;
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}
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static int lgdt3304_read_status(struct dvb_frontend *fe, fe_status_t *status)
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{
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struct lgdt3304_state *state = fe->demodulator_priv;
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int r011d;
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int qam_lck;
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*status = 0;
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dprintk("lgdt read status\n");
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r011d = lgdt3304_i2c_read_reg(fe, 0x011d);
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dprintk("%02x\n", r011d);
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switch(state->current_modulation) {
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case VSB_8:
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if (r011d & 0x80) {
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dprintk("VSB Locked\n");
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*status |= FE_HAS_CARRIER;
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*status |= FE_HAS_LOCK;
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*status |= FE_HAS_SYNC;
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*status |= FE_HAS_SIGNAL;
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}
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break;
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case QAM_64:
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case QAM_256:
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qam_lck = r011d & 0x7;
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switch(qam_lck) {
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case 0x0: dprintk("Unlock\n");
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break;
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case 0x4: dprintk("1st Lock in acquisition state\n");
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break;
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case 0x6: dprintk("2nd Lock in acquisition state\n");
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break;
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case 0x7: dprintk("Final Lock in good reception state\n");
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*status |= FE_HAS_CARRIER;
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*status |= FE_HAS_LOCK;
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*status |= FE_HAS_SYNC;
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*status |= FE_HAS_SIGNAL;
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break;
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}
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break;
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default:
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printk("%s unhandled modulation\n", __func__);
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}
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return 0;
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}
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static int lgdt3304_read_ber(struct dvb_frontend *fe, __u32 *ber)
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{
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dprintk("read ber\n");
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return 0;
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}
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static int lgdt3304_read_snr(struct dvb_frontend *fe, __u16 *snr)
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{
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dprintk("read snr\n");
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return 0;
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}
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static int lgdt3304_read_ucblocks(struct dvb_frontend *fe, __u32 *ucblocks)
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{
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dprintk("read ucblocks\n");
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return 0;
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}
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static void lgdt3304_release(struct dvb_frontend *fe)
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{
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struct lgdt3304_state *state = (struct lgdt3304_state *)fe->demodulator_priv;
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kfree(state);
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}
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static struct dvb_frontend_ops demod_lgdt3304={
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.info = {
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.name = "LG 3304",
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.type = FE_ATSC,
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.frequency_min = 54000000,
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.frequency_max = 858000000,
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.frequency_stepsize = 62500,
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.symbol_rate_min = 5056941,
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.symbol_rate_max = 10762000,
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.caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
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},
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.init = lgdt3304_init,
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.sleep = lgdt3304_sleep,
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.set_frontend = lgdt3304_set_parameters,
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.read_snr = lgdt3304_read_snr,
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.read_ber = lgdt3304_read_ber,
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.read_status = lgdt3304_read_status,
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.read_ucblocks = lgdt3304_read_ucblocks,
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.release = lgdt3304_release,
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};
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struct dvb_frontend* lgdt3304_attach(const struct lgdt3304_config *config,
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struct i2c_adapter *i2c)
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{
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struct lgdt3304_state *state;
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state = kzalloc(sizeof(struct lgdt3304_state), GFP_KERNEL);
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if (state == NULL)
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return NULL;
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state->addr = config->i2c_address;
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state->i2c = i2c;
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memcpy(&state->frontend.ops, &demod_lgdt3304, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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EXPORT_SYMBOL_GPL(lgdt3304_attach);
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MODULE_AUTHOR("Markus Rechberger <mrechberger@empiatech.com>");
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MODULE_DESCRIPTION("LGE LGDT3304 DVB-T demodulator driver");
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MODULE_LICENSE("GPL");
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