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1522 lines
35 KiB
1522 lines
35 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// tuner-xc2028 |
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// |
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// Copyright (c) 2007-2008 Mauro Carvalho Chehab <[email protected]> |
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// |
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// Copyright (c) 2007 Michel Ludwig ([email protected]) |
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// - frontend interface |
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#include <linux/i2c.h> |
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#include <asm/div64.h> |
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#include <linux/firmware.h> |
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#include <linux/videodev2.h> |
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#include <linux/delay.h> |
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#include <media/tuner.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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#include <asm/unaligned.h> |
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#include "tuner-i2c.h" |
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#include "tuner-xc2028.h" |
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#include "tuner-xc2028-types.h" |
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|
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#include <linux/dvb/frontend.h> |
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#include <media/dvb_frontend.h> |
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/* Max transfer size done by I2C transfer functions */ |
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#define MAX_XFER_SIZE 80 |
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/* Registers (Write-only) */ |
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#define XREG_INIT 0x00 |
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#define XREG_RF_FREQ 0x02 |
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#define XREG_POWER_DOWN 0x08 |
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/* Registers (Read-only) */ |
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#define XREG_FREQ_ERROR 0x01 |
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#define XREG_LOCK 0x02 |
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#define XREG_VERSION 0x04 |
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#define XREG_PRODUCT_ID 0x08 |
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#define XREG_HSYNC_FREQ 0x10 |
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#define XREG_FRAME_LINES 0x20 |
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#define XREG_SNR 0x40 |
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#define XREG_ADC_ENV 0x0100 |
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static int debug; |
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module_param(debug, int, 0644); |
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MODULE_PARM_DESC(debug, "enable verbose debug messages"); |
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static int no_poweroff; |
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module_param(no_poweroff, int, 0644); |
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MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n" |
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"1 keep device energized and with tuner ready all the times.\n" |
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" Faster, but consumes more power and keeps the device hotter\n"); |
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static char audio_std[8]; |
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module_param_string(audio_std, audio_std, sizeof(audio_std), 0); |
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MODULE_PARM_DESC(audio_std, |
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"Audio standard. XC3028 audio decoder explicitly needs to know what audio\n" |
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"standard is needed for some video standards with audio A2 or NICAM.\n" |
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"The valid values are:\n" |
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"A2\n" |
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"A2/A\n" |
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"A2/B\n" |
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"NICAM\n" |
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"NICAM/A\n" |
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"NICAM/B\n"); |
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static char firmware_name[30]; |
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module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0); |
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MODULE_PARM_DESC(firmware_name, |
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"Firmware file name. Allows overriding the default firmware name\n"); |
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static LIST_HEAD(hybrid_tuner_instance_list); |
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static DEFINE_MUTEX(xc2028_list_mutex); |
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/* struct for storing firmware table */ |
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struct firmware_description { |
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unsigned int type; |
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v4l2_std_id id; |
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__u16 int_freq; |
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unsigned char *ptr; |
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unsigned int size; |
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}; |
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struct firmware_properties { |
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unsigned int type; |
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v4l2_std_id id; |
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v4l2_std_id std_req; |
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__u16 int_freq; |
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unsigned int scode_table; |
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int scode_nr; |
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}; |
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enum xc2028_state { |
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XC2028_NO_FIRMWARE = 0, |
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XC2028_WAITING_FIRMWARE, |
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XC2028_ACTIVE, |
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XC2028_SLEEP, |
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XC2028_NODEV, |
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}; |
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struct xc2028_data { |
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struct list_head hybrid_tuner_instance_list; |
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struct tuner_i2c_props i2c_props; |
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__u32 frequency; |
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enum xc2028_state state; |
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const char *fname; |
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struct firmware_description *firm; |
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int firm_size; |
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__u16 firm_version; |
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__u16 hwmodel; |
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__u16 hwvers; |
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struct xc2028_ctrl ctrl; |
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struct firmware_properties cur_fw; |
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struct mutex lock; |
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}; |
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#define i2c_send(priv, buf, size) ({ \ |
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int _rc; \ |
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_rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \ |
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if (size != _rc) \ |
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tuner_info("i2c output error: rc = %d (should be %d)\n",\ |
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_rc, (int)size); \ |
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if (priv->ctrl.msleep) \ |
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msleep(priv->ctrl.msleep); \ |
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_rc; \ |
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}) |
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#define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \ |
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int _rc; \ |
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_rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \ |
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ibuf, isize); \ |
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if (isize != _rc) \ |
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tuner_err("i2c input error: rc = %d (should be %d)\n", \ |
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_rc, (int)isize); \ |
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if (priv->ctrl.msleep) \ |
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msleep(priv->ctrl.msleep); \ |
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_rc; \ |
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}) |
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#define send_seq(priv, data...) ({ \ |
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static u8 _val[] = data; \ |
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int _rc; \ |
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if (sizeof(_val) != \ |
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(_rc = tuner_i2c_xfer_send(&priv->i2c_props, \ |
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_val, sizeof(_val)))) { \ |
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tuner_err("Error on line %d: %d\n", __LINE__, _rc); \ |
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} else if (priv->ctrl.msleep) \ |
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msleep(priv->ctrl.msleep); \ |
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_rc; \ |
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}) |
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static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val) |
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{ |
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unsigned char buf[2]; |
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unsigned char ibuf[2]; |
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tuner_dbg("%s %04x called\n", __func__, reg); |
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buf[0] = reg >> 8; |
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buf[1] = (unsigned char) reg; |
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if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2) |
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return -EIO; |
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*val = (ibuf[1]) | (ibuf[0] << 8); |
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return 0; |
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} |
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#define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0) |
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static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq) |
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{ |
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if (type & BASE) |
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printk(KERN_CONT "BASE "); |
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if (type & INIT1) |
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printk(KERN_CONT "INIT1 "); |
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if (type & F8MHZ) |
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printk(KERN_CONT "F8MHZ "); |
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if (type & MTS) |
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printk(KERN_CONT "MTS "); |
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if (type & D2620) |
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printk(KERN_CONT "D2620 "); |
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if (type & D2633) |
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printk(KERN_CONT "D2633 "); |
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if (type & DTV6) |
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printk(KERN_CONT "DTV6 "); |
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if (type & QAM) |
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printk(KERN_CONT "QAM "); |
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if (type & DTV7) |
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printk(KERN_CONT "DTV7 "); |
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if (type & DTV78) |
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printk(KERN_CONT "DTV78 "); |
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if (type & DTV8) |
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printk(KERN_CONT "DTV8 "); |
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if (type & FM) |
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printk(KERN_CONT "FM "); |
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if (type & INPUT1) |
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printk(KERN_CONT "INPUT1 "); |
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if (type & LCD) |
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printk(KERN_CONT "LCD "); |
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if (type & NOGD) |
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printk(KERN_CONT "NOGD "); |
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if (type & MONO) |
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printk(KERN_CONT "MONO "); |
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if (type & ATSC) |
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printk(KERN_CONT "ATSC "); |
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if (type & IF) |
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printk(KERN_CONT "IF "); |
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if (type & LG60) |
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printk(KERN_CONT "LG60 "); |
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if (type & ATI638) |
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printk(KERN_CONT "ATI638 "); |
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if (type & OREN538) |
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printk(KERN_CONT "OREN538 "); |
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if (type & OREN36) |
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printk(KERN_CONT "OREN36 "); |
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if (type & TOYOTA388) |
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printk(KERN_CONT "TOYOTA388 "); |
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if (type & TOYOTA794) |
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printk(KERN_CONT "TOYOTA794 "); |
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if (type & DIBCOM52) |
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printk(KERN_CONT "DIBCOM52 "); |
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if (type & ZARLINK456) |
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printk(KERN_CONT "ZARLINK456 "); |
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if (type & CHINA) |
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printk(KERN_CONT "CHINA "); |
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if (type & F6MHZ) |
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printk(KERN_CONT "F6MHZ "); |
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if (type & INPUT2) |
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printk(KERN_CONT "INPUT2 "); |
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if (type & SCODE) |
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printk(KERN_CONT "SCODE "); |
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if (type & HAS_IF) |
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printk(KERN_CONT "HAS_IF_%d ", int_freq); |
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} |
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static v4l2_std_id parse_audio_std_option(void) |
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{ |
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if (strcasecmp(audio_std, "A2") == 0) |
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return V4L2_STD_A2; |
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if (strcasecmp(audio_std, "A2/A") == 0) |
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return V4L2_STD_A2_A; |
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if (strcasecmp(audio_std, "A2/B") == 0) |
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return V4L2_STD_A2_B; |
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if (strcasecmp(audio_std, "NICAM") == 0) |
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return V4L2_STD_NICAM; |
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if (strcasecmp(audio_std, "NICAM/A") == 0) |
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return V4L2_STD_NICAM_A; |
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if (strcasecmp(audio_std, "NICAM/B") == 0) |
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return V4L2_STD_NICAM_B; |
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return 0; |
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} |
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static int check_device_status(struct xc2028_data *priv) |
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{ |
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switch (priv->state) { |
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case XC2028_NO_FIRMWARE: |
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case XC2028_WAITING_FIRMWARE: |
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return -EAGAIN; |
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case XC2028_ACTIVE: |
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return 1; |
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case XC2028_SLEEP: |
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return 0; |
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case XC2028_NODEV: |
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return -ENODEV; |
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} |
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return 0; |
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} |
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static void free_firmware(struct xc2028_data *priv) |
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{ |
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int i; |
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tuner_dbg("%s called\n", __func__); |
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/* free allocated f/w string */ |
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if (priv->fname != firmware_name) |
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kfree(priv->fname); |
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priv->fname = NULL; |
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priv->state = XC2028_NO_FIRMWARE; |
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memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); |
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if (!priv->firm) |
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return; |
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for (i = 0; i < priv->firm_size; i++) |
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kfree(priv->firm[i].ptr); |
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kfree(priv->firm); |
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priv->firm = NULL; |
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priv->firm_size = 0; |
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} |
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static int load_all_firmwares(struct dvb_frontend *fe, |
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const struct firmware *fw) |
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{ |
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struct xc2028_data *priv = fe->tuner_priv; |
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const unsigned char *p, *endp; |
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int rc = 0; |
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int n, n_array; |
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char name[33]; |
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tuner_dbg("%s called\n", __func__); |
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p = fw->data; |
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endp = p + fw->size; |
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if (fw->size < sizeof(name) - 1 + 2 + 2) { |
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tuner_err("Error: firmware file %s has invalid size!\n", |
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priv->fname); |
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goto corrupt; |
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} |
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memcpy(name, p, sizeof(name) - 1); |
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name[sizeof(name) - 1] = 0; |
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p += sizeof(name) - 1; |
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priv->firm_version = get_unaligned_le16(p); |
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p += 2; |
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n_array = get_unaligned_le16(p); |
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p += 2; |
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tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n", |
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n_array, priv->fname, name, |
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priv->firm_version >> 8, priv->firm_version & 0xff); |
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priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL); |
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if (priv->firm == NULL) { |
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tuner_err("Not enough memory to load firmware file.\n"); |
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rc = -ENOMEM; |
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goto err; |
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} |
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priv->firm_size = n_array; |
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n = -1; |
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while (p < endp) { |
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__u32 type, size; |
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v4l2_std_id id; |
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__u16 int_freq = 0; |
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n++; |
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if (n >= n_array) { |
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tuner_err("More firmware images in file than were expected!\n"); |
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goto corrupt; |
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} |
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/* Checks if there's enough bytes to read */ |
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if (endp - p < sizeof(type) + sizeof(id) + sizeof(size)) |
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goto header; |
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type = get_unaligned_le32(p); |
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p += sizeof(type); |
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id = get_unaligned_le64(p); |
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p += sizeof(id); |
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if (type & HAS_IF) { |
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int_freq = get_unaligned_le16(p); |
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p += sizeof(int_freq); |
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if (endp - p < sizeof(size)) |
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goto header; |
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} |
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size = get_unaligned_le32(p); |
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p += sizeof(size); |
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if (!size || size > endp - p) { |
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tuner_err("Firmware type "); |
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dump_firm_type(type); |
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printk(KERN_CONT |
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"(%x), id %llx is corrupted (size=%zd, expected %d)\n", |
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type, (unsigned long long)id, (endp - p), size); |
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goto corrupt; |
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} |
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priv->firm[n].ptr = kmemdup(p, size, GFP_KERNEL); |
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if (priv->firm[n].ptr == NULL) { |
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tuner_err("Not enough memory to load firmware file.\n"); |
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rc = -ENOMEM; |
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goto err; |
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} |
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tuner_dbg("Reading firmware type "); |
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if (debug) { |
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dump_firm_type_and_int_freq(type, int_freq); |
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printk(KERN_CONT "(%x), id %llx, size=%d.\n", |
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type, (unsigned long long)id, size); |
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} |
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priv->firm[n].type = type; |
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priv->firm[n].id = id; |
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priv->firm[n].size = size; |
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priv->firm[n].int_freq = int_freq; |
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|
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p += size; |
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} |
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if (n + 1 != priv->firm_size) { |
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tuner_err("Firmware file is incomplete!\n"); |
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goto corrupt; |
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} |
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goto done; |
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header: |
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tuner_err("Firmware header is incomplete!\n"); |
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corrupt: |
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rc = -EINVAL; |
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tuner_err("Error: firmware file is corrupted!\n"); |
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err: |
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tuner_info("Releasing partially loaded firmware file.\n"); |
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free_firmware(priv); |
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done: |
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if (rc == 0) |
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tuner_dbg("Firmware files loaded.\n"); |
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else |
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priv->state = XC2028_NODEV; |
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return rc; |
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} |
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static int seek_firmware(struct dvb_frontend *fe, unsigned int type, |
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v4l2_std_id *id) |
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{ |
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struct xc2028_data *priv = fe->tuner_priv; |
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int i, best_i = -1, best_nr_matches = 0; |
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unsigned int type_mask = 0; |
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|
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tuner_dbg("%s called, want type=", __func__); |
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if (debug) { |
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dump_firm_type(type); |
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printk(KERN_CONT "(%x), id %016llx.\n", |
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type, (unsigned long long)*id); |
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} |
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|
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if (!priv->firm) { |
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tuner_err("Error! firmware not loaded\n"); |
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return -EINVAL; |
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} |
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|
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if (((type & ~SCODE) == 0) && (*id == 0)) |
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*id = V4L2_STD_PAL; |
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|
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if (type & BASE) |
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type_mask = BASE_TYPES; |
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else if (type & SCODE) { |
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type &= SCODE_TYPES; |
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type_mask = SCODE_TYPES & ~HAS_IF; |
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} else if (type & DTV_TYPES) |
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type_mask = DTV_TYPES; |
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else if (type & STD_SPECIFIC_TYPES) |
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type_mask = STD_SPECIFIC_TYPES; |
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|
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type &= type_mask; |
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|
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if (!(type & SCODE)) |
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type_mask = ~0; |
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|
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/* Seek for exact match */ |
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for (i = 0; i < priv->firm_size; i++) { |
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if ((type == (priv->firm[i].type & type_mask)) && |
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(*id == priv->firm[i].id)) |
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goto found; |
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} |
|
|
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/* Seek for generic video standard match */ |
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for (i = 0; i < priv->firm_size; i++) { |
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v4l2_std_id match_mask; |
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int nr_matches; |
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|
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if (type != (priv->firm[i].type & type_mask)) |
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continue; |
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|
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match_mask = *id & priv->firm[i].id; |
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if (!match_mask) |
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continue; |
|
|
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if ((*id & match_mask) == *id) |
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goto found; /* Supports all the requested standards */ |
|
|
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nr_matches = hweight64(match_mask); |
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if (nr_matches > best_nr_matches) { |
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best_nr_matches = nr_matches; |
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best_i = i; |
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} |
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} |
|
|
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if (best_nr_matches > 0) { |
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tuner_dbg("Selecting best matching firmware (%d bits) for type=", |
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best_nr_matches); |
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dump_firm_type(type); |
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printk(KERN_CONT |
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"(%x), id %016llx:\n", type, (unsigned long long)*id); |
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i = best_i; |
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goto found; |
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} |
|
|
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/*FIXME: Would make sense to seek for type "hint" match ? */ |
|
|
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i = -ENOENT; |
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goto ret; |
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|
|
found: |
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*id = priv->firm[i].id; |
|
|
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ret: |
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tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found"); |
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if (debug) { |
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dump_firm_type(type); |
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printk(KERN_CONT "(%x), id %016llx.\n", |
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type, (unsigned long long)*id); |
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} |
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return i; |
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} |
|
|
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static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg) |
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{ |
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struct xc2028_data *priv = fe->tuner_priv; |
|
|
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/* analog side (tuner-core) uses i2c_adap->algo_data. |
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* digital side is not guaranteed to have algo_data defined. |
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* |
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* digital side will always have fe->dvb defined. |
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* analog side (tuner-core) doesn't (yet) define fe->dvb. |
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*/ |
|
|
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return (!fe->callback) ? -EINVAL : |
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fe->callback(((fe->dvb) && (fe->dvb->priv)) ? |
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fe->dvb->priv : priv->i2c_props.adap->algo_data, |
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DVB_FRONTEND_COMPONENT_TUNER, cmd, arg); |
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} |
|
|
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static int load_firmware(struct dvb_frontend *fe, unsigned int type, |
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v4l2_std_id *id) |
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{ |
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struct xc2028_data *priv = fe->tuner_priv; |
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int pos, rc; |
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unsigned char *p, *endp, buf[MAX_XFER_SIZE]; |
|
|
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if (priv->ctrl.max_len > sizeof(buf)) |
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priv->ctrl.max_len = sizeof(buf); |
|
|
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tuner_dbg("%s called\n", __func__); |
|
|
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pos = seek_firmware(fe, type, id); |
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if (pos < 0) |
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return pos; |
|
|
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tuner_info("Loading firmware for type="); |
|
dump_firm_type(priv->firm[pos].type); |
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printk(KERN_CONT "(%x), id %016llx.\n", |
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priv->firm[pos].type, (unsigned long long)*id); |
|
|
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p = priv->firm[pos].ptr; |
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endp = p + priv->firm[pos].size; |
|
|
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while (p < endp) { |
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__u16 size; |
|
|
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/* Checks if there's enough bytes to read */ |
|
if (p + sizeof(size) > endp) { |
|
tuner_err("Firmware chunk size is wrong\n"); |
|
return -EINVAL; |
|
} |
|
|
|
size = le16_to_cpu(*(__le16 *) p); |
|
p += sizeof(size); |
|
|
|
if (size == 0xffff) |
|
return 0; |
|
|
|
if (!size) { |
|
/* Special callback command received */ |
|
rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0); |
|
if (rc < 0) { |
|
tuner_err("Error at RESET code %d\n", |
|
(*p) & 0x7f); |
|
return -EINVAL; |
|
} |
|
continue; |
|
} |
|
if (size >= 0xff00) { |
|
switch (size) { |
|
case 0xff00: |
|
rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0); |
|
if (rc < 0) { |
|
tuner_err("Error at RESET code %d\n", |
|
(*p) & 0x7f); |
|
return -EINVAL; |
|
} |
|
break; |
|
default: |
|
tuner_info("Invalid RESET code %d\n", |
|
size & 0x7f); |
|
return -EINVAL; |
|
|
|
} |
|
continue; |
|
} |
|
|
|
/* Checks for a sleep command */ |
|
if (size & 0x8000) { |
|
msleep(size & 0x7fff); |
|
continue; |
|
} |
|
|
|
if ((size + p > endp)) { |
|
tuner_err("missing bytes: need %d, have %zd\n", |
|
size, (endp - p)); |
|
return -EINVAL; |
|
} |
|
|
|
buf[0] = *p; |
|
p++; |
|
size--; |
|
|
|
/* Sends message chunks */ |
|
while (size > 0) { |
|
int len = (size < priv->ctrl.max_len - 1) ? |
|
size : priv->ctrl.max_len - 1; |
|
|
|
memcpy(buf + 1, p, len); |
|
|
|
rc = i2c_send(priv, buf, len + 1); |
|
if (rc < 0) { |
|
tuner_err("%d returned from send\n", rc); |
|
return -EINVAL; |
|
} |
|
|
|
p += len; |
|
size -= len; |
|
} |
|
|
|
/* silently fail if the frontend doesn't support I2C flush */ |
|
rc = do_tuner_callback(fe, XC2028_I2C_FLUSH, 0); |
|
if ((rc < 0) && (rc != -EINVAL)) { |
|
tuner_err("error executing flush: %d\n", rc); |
|
return rc; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int load_scode(struct dvb_frontend *fe, unsigned int type, |
|
v4l2_std_id *id, __u16 int_freq, int scode) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int pos, rc; |
|
unsigned char *p; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
if (!int_freq) { |
|
pos = seek_firmware(fe, type, id); |
|
if (pos < 0) |
|
return pos; |
|
} else { |
|
for (pos = 0; pos < priv->firm_size; pos++) { |
|
if ((priv->firm[pos].int_freq == int_freq) && |
|
(priv->firm[pos].type & HAS_IF)) |
|
break; |
|
} |
|
if (pos == priv->firm_size) |
|
return -ENOENT; |
|
} |
|
|
|
p = priv->firm[pos].ptr; |
|
|
|
if (priv->firm[pos].type & HAS_IF) { |
|
if (priv->firm[pos].size != 12 * 16 || scode >= 16) |
|
return -EINVAL; |
|
p += 12 * scode; |
|
} else { |
|
/* 16 SCODE entries per file; each SCODE entry is 12 bytes and |
|
* has a 2-byte size header in the firmware format. */ |
|
if (priv->firm[pos].size != 14 * 16 || scode >= 16 || |
|
le16_to_cpu(*(__le16 *)(p + 14 * scode)) != 12) |
|
return -EINVAL; |
|
p += 14 * scode + 2; |
|
} |
|
|
|
tuner_info("Loading SCODE for type="); |
|
dump_firm_type_and_int_freq(priv->firm[pos].type, |
|
priv->firm[pos].int_freq); |
|
printk(KERN_CONT "(%x), id %016llx.\n", priv->firm[pos].type, |
|
(unsigned long long)*id); |
|
|
|
if (priv->firm_version < 0x0202) |
|
rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00}); |
|
else |
|
rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00}); |
|
if (rc < 0) |
|
return -EIO; |
|
|
|
rc = i2c_send(priv, p, 12); |
|
if (rc < 0) |
|
return -EIO; |
|
|
|
rc = send_seq(priv, {0x00, 0x8c}); |
|
if (rc < 0) |
|
return -EIO; |
|
|
|
return 0; |
|
} |
|
|
|
static int xc2028_sleep(struct dvb_frontend *fe); |
|
|
|
static int check_firmware(struct dvb_frontend *fe, unsigned int type, |
|
v4l2_std_id std, __u16 int_freq) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
struct firmware_properties new_fw; |
|
int rc, retry_count = 0; |
|
u16 version, hwmodel; |
|
v4l2_std_id std0; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
if (priv->ctrl.mts && !(type & FM)) |
|
type |= MTS; |
|
|
|
retry: |
|
new_fw.type = type; |
|
new_fw.id = std; |
|
new_fw.std_req = std; |
|
new_fw.scode_table = SCODE | priv->ctrl.scode_table; |
|
new_fw.scode_nr = 0; |
|
new_fw.int_freq = int_freq; |
|
|
|
tuner_dbg("checking firmware, user requested type="); |
|
if (debug) { |
|
dump_firm_type(new_fw.type); |
|
printk(KERN_CONT "(%x), id %016llx, ", new_fw.type, |
|
(unsigned long long)new_fw.std_req); |
|
if (!int_freq) { |
|
printk(KERN_CONT "scode_tbl "); |
|
dump_firm_type(priv->ctrl.scode_table); |
|
printk(KERN_CONT "(%x), ", priv->ctrl.scode_table); |
|
} else |
|
printk(KERN_CONT "int_freq %d, ", new_fw.int_freq); |
|
printk(KERN_CONT "scode_nr %d\n", new_fw.scode_nr); |
|
} |
|
|
|
/* |
|
* No need to reload base firmware if it matches and if the tuner |
|
* is not at sleep mode |
|
*/ |
|
if ((priv->state == XC2028_ACTIVE) && |
|
(((BASE | new_fw.type) & BASE_TYPES) == |
|
(priv->cur_fw.type & BASE_TYPES))) { |
|
tuner_dbg("BASE firmware not changed.\n"); |
|
goto skip_base; |
|
} |
|
|
|
/* Updating BASE - forget about all currently loaded firmware */ |
|
memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); |
|
|
|
/* Reset is needed before loading firmware */ |
|
rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0); |
|
if (rc < 0) |
|
goto fail; |
|
|
|
/* BASE firmwares are all std0 */ |
|
std0 = 0; |
|
rc = load_firmware(fe, BASE | new_fw.type, &std0); |
|
if (rc < 0) { |
|
tuner_err("Error %d while loading base firmware\n", |
|
rc); |
|
goto fail; |
|
} |
|
|
|
/* Load INIT1, if needed */ |
|
tuner_dbg("Load init1 firmware, if exists\n"); |
|
|
|
rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0); |
|
if (rc == -ENOENT) |
|
rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ, |
|
&std0); |
|
if (rc < 0 && rc != -ENOENT) { |
|
tuner_err("Error %d while loading init1 firmware\n", |
|
rc); |
|
goto fail; |
|
} |
|
|
|
skip_base: |
|
/* |
|
* No need to reload standard specific firmware if base firmware |
|
* was not reloaded and requested video standards have not changed. |
|
*/ |
|
if (priv->cur_fw.type == (BASE | new_fw.type) && |
|
priv->cur_fw.std_req == std) { |
|
tuner_dbg("Std-specific firmware already loaded.\n"); |
|
goto skip_std_specific; |
|
} |
|
|
|
/* Reloading std-specific firmware forces a SCODE update */ |
|
priv->cur_fw.scode_table = 0; |
|
|
|
rc = load_firmware(fe, new_fw.type, &new_fw.id); |
|
if (rc == -ENOENT) |
|
rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id); |
|
|
|
if (rc < 0) |
|
goto fail; |
|
|
|
skip_std_specific: |
|
if (priv->cur_fw.scode_table == new_fw.scode_table && |
|
priv->cur_fw.scode_nr == new_fw.scode_nr) { |
|
tuner_dbg("SCODE firmware already loaded.\n"); |
|
goto check_device; |
|
} |
|
|
|
if (new_fw.type & FM) |
|
goto check_device; |
|
|
|
/* Load SCODE firmware, if exists */ |
|
tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr); |
|
|
|
rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id, |
|
new_fw.int_freq, new_fw.scode_nr); |
|
|
|
check_device: |
|
if (xc2028_get_reg(priv, 0x0004, &version) < 0 || |
|
xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) { |
|
tuner_err("Unable to read tuner registers.\n"); |
|
goto fail; |
|
} |
|
|
|
tuner_dbg("Device is Xceive %d version %d.%d, firmware version %d.%d\n", |
|
hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8, |
|
(version & 0xf0) >> 4, version & 0xf); |
|
|
|
|
|
if (priv->ctrl.read_not_reliable) |
|
goto read_not_reliable; |
|
|
|
/* Check firmware version against what we downloaded. */ |
|
if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) { |
|
if (!priv->ctrl.read_not_reliable) { |
|
tuner_err("Incorrect readback of firmware version.\n"); |
|
goto fail; |
|
} else { |
|
tuner_err("Returned an incorrect version. However, read is not reliable enough. Ignoring it.\n"); |
|
hwmodel = 3028; |
|
} |
|
} |
|
|
|
/* Check that the tuner hardware model remains consistent over time. */ |
|
if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) { |
|
priv->hwmodel = hwmodel; |
|
priv->hwvers = version & 0xff00; |
|
} else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel || |
|
priv->hwvers != (version & 0xff00)) { |
|
tuner_err("Read invalid device hardware information - tuner hung?\n"); |
|
goto fail; |
|
} |
|
|
|
read_not_reliable: |
|
priv->cur_fw = new_fw; |
|
|
|
/* |
|
* By setting BASE in cur_fw.type only after successfully loading all |
|
* firmwares, we can: |
|
* 1. Identify that BASE firmware with type=0 has been loaded; |
|
* 2. Tell whether BASE firmware was just changed the next time through. |
|
*/ |
|
priv->cur_fw.type |= BASE; |
|
priv->state = XC2028_ACTIVE; |
|
|
|
return 0; |
|
|
|
fail: |
|
free_firmware(priv); |
|
|
|
if (retry_count < 8) { |
|
msleep(50); |
|
retry_count++; |
|
tuner_dbg("Retrying firmware load\n"); |
|
goto retry; |
|
} |
|
|
|
/* Firmware didn't load. Put the device to sleep */ |
|
xc2028_sleep(fe); |
|
|
|
if (rc == -ENOENT) |
|
rc = -EINVAL; |
|
return rc; |
|
} |
|
|
|
static int xc2028_signal(struct dvb_frontend *fe, u16 *strength) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
u16 frq_lock, signal = 0; |
|
int rc, i; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
/* If the device is sleeping, no channel is tuned */ |
|
if (!rc) { |
|
*strength = 0; |
|
return 0; |
|
} |
|
|
|
mutex_lock(&priv->lock); |
|
|
|
/* Sync Lock Indicator */ |
|
for (i = 0; i < 3; i++) { |
|
rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock); |
|
if (rc < 0) |
|
goto ret; |
|
|
|
if (frq_lock) |
|
break; |
|
msleep(6); |
|
} |
|
|
|
/* Frequency didn't lock */ |
|
if (frq_lock == 2) |
|
goto ret; |
|
|
|
/* Get SNR of the video signal */ |
|
rc = xc2028_get_reg(priv, XREG_SNR, &signal); |
|
if (rc < 0) |
|
goto ret; |
|
|
|
/* Signal level is 3 bits only */ |
|
|
|
signal = ((1 << 12) - 1) | ((signal & 0x07) << 12); |
|
|
|
ret: |
|
mutex_unlock(&priv->lock); |
|
|
|
*strength = signal; |
|
|
|
tuner_dbg("signal strength is %d\n", signal); |
|
|
|
return rc; |
|
} |
|
|
|
static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int i, rc; |
|
u16 frq_lock = 0; |
|
s16 afc_reg = 0; |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
/* If the device is sleeping, no channel is tuned */ |
|
if (!rc) { |
|
*afc = 0; |
|
return 0; |
|
} |
|
|
|
mutex_lock(&priv->lock); |
|
|
|
/* Sync Lock Indicator */ |
|
for (i = 0; i < 3; i++) { |
|
rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock); |
|
if (rc < 0) |
|
goto ret; |
|
|
|
if (frq_lock) |
|
break; |
|
msleep(6); |
|
} |
|
|
|
/* Frequency didn't lock */ |
|
if (frq_lock == 2) |
|
goto ret; |
|
|
|
/* Get AFC */ |
|
rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg); |
|
if (rc < 0) |
|
goto ret; |
|
|
|
*afc = afc_reg * 15625; /* Hz */ |
|
|
|
tuner_dbg("AFC is %d Hz\n", *afc); |
|
|
|
ret: |
|
mutex_unlock(&priv->lock); |
|
|
|
return rc; |
|
} |
|
|
|
#define DIV 15625 |
|
|
|
static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, |
|
enum v4l2_tuner_type new_type, |
|
unsigned int type, |
|
v4l2_std_id std, |
|
u16 int_freq) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int rc = -EINVAL; |
|
unsigned char buf[4]; |
|
u32 div, offset = 0; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
mutex_lock(&priv->lock); |
|
|
|
tuner_dbg("should set frequency %d kHz\n", freq / 1000); |
|
|
|
if (check_firmware(fe, type, std, int_freq) < 0) |
|
goto ret; |
|
|
|
/* On some cases xc2028 can disable video output, if |
|
* very weak signals are received. By sending a soft |
|
* reset, this is re-enabled. So, it is better to always |
|
* send a soft reset before changing channels, to be sure |
|
* that xc2028 will be in a safe state. |
|
* Maybe this might also be needed for DTV. |
|
*/ |
|
switch (new_type) { |
|
case V4L2_TUNER_ANALOG_TV: |
|
rc = send_seq(priv, {0x00, 0x00}); |
|
|
|
/* Analog mode requires offset = 0 */ |
|
break; |
|
case V4L2_TUNER_RADIO: |
|
/* Radio mode requires offset = 0 */ |
|
break; |
|
case V4L2_TUNER_DIGITAL_TV: |
|
/* |
|
* Digital modes require an offset to adjust to the |
|
* proper frequency. The offset depends on what |
|
* firmware version is used. |
|
*/ |
|
|
|
/* |
|
* Adjust to the center frequency. This is calculated by the |
|
* formula: offset = 1.25MHz - BW/2 |
|
* For DTV 7/8, the firmware uses BW = 8000, so it needs a |
|
* further adjustment to get the frequency center on VHF |
|
*/ |
|
|
|
/* |
|
* The firmware DTV78 used to work fine in UHF band (8 MHz |
|
* bandwidth) but not at all in VHF band (7 MHz bandwidth). |
|
* The real problem was connected to the formula used to |
|
* calculate the center frequency offset in VHF band. |
|
* In fact, removing the 500KHz adjustment fixed the problem. |
|
* This is coherent to what was implemented for the DTV7 |
|
* firmware. |
|
* In the end, now the center frequency is the same for all 3 |
|
* firmwares (DTV7, DTV8, DTV78) and doesn't depend on channel |
|
* bandwidth. |
|
*/ |
|
|
|
if (priv->cur_fw.type & DTV6) |
|
offset = 1750000; |
|
else /* DTV7 or DTV8 or DTV78 */ |
|
offset = 2750000; |
|
|
|
/* |
|
* xc3028 additional "magic" |
|
* Depending on the firmware version, it needs some adjustments |
|
* to properly centralize the frequency. This seems to be |
|
* needed to compensate the SCODE table adjustments made by |
|
* newer firmwares |
|
*/ |
|
|
|
/* |
|
* The proper adjustment would be to do it at s-code table. |
|
* However, this didn't work, as reported by |
|
* Robert Lowery <[email protected]> |
|
*/ |
|
|
|
#if 0 |
|
/* |
|
* Still need tests for XC3028L (firmware 3.2 or upper) |
|
* So, for now, let's just comment the per-firmware |
|
* version of this change. Reports with xc3028l working |
|
* with and without the lines below are welcome |
|
*/ |
|
|
|
if (priv->firm_version < 0x0302) { |
|
if (priv->cur_fw.type & DTV7) |
|
offset += 500000; |
|
} else { |
|
if (priv->cur_fw.type & DTV7) |
|
offset -= 300000; |
|
else if (type != ATSC) /* DVB @6MHz, DTV 8 and DTV 7/8 */ |
|
offset += 200000; |
|
} |
|
#endif |
|
break; |
|
default: |
|
tuner_err("Unsupported tuner type %d.\n", new_type); |
|
break; |
|
} |
|
|
|
div = (freq - offset + DIV / 2) / DIV; |
|
|
|
/* CMD= Set frequency */ |
|
if (priv->firm_version < 0x0202) |
|
rc = send_seq(priv, {0x00, XREG_RF_FREQ, 0x00, 0x00}); |
|
else |
|
rc = send_seq(priv, {0x80, XREG_RF_FREQ, 0x00, 0x00}); |
|
if (rc < 0) |
|
goto ret; |
|
|
|
/* Return code shouldn't be checked. |
|
The reset CLK is needed only with tm6000. |
|
Driver should work fine even if this fails. |
|
*/ |
|
if (priv->ctrl.msleep) |
|
msleep(priv->ctrl.msleep); |
|
do_tuner_callback(fe, XC2028_RESET_CLK, 1); |
|
|
|
msleep(10); |
|
|
|
buf[0] = 0xff & (div >> 24); |
|
buf[1] = 0xff & (div >> 16); |
|
buf[2] = 0xff & (div >> 8); |
|
buf[3] = 0xff & (div); |
|
|
|
rc = i2c_send(priv, buf, sizeof(buf)); |
|
if (rc < 0) |
|
goto ret; |
|
msleep(100); |
|
|
|
priv->frequency = freq; |
|
|
|
tuner_dbg("divisor= %*ph (freq=%d.%03d)\n", 4, buf, |
|
freq / 1000000, (freq % 1000000) / 1000); |
|
|
|
rc = 0; |
|
|
|
ret: |
|
mutex_unlock(&priv->lock); |
|
|
|
return rc; |
|
} |
|
|
|
static int xc2028_set_analog_freq(struct dvb_frontend *fe, |
|
struct analog_parameters *p) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
unsigned int type=0; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
if (p->mode == V4L2_TUNER_RADIO) { |
|
type |= FM; |
|
if (priv->ctrl.input1) |
|
type |= INPUT1; |
|
return generic_set_freq(fe, (625l * p->frequency) / 10, |
|
V4L2_TUNER_RADIO, type, 0, 0); |
|
} |
|
|
|
/* if std is not defined, choose one */ |
|
if (!p->std) |
|
p->std = V4L2_STD_MN; |
|
|
|
/* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */ |
|
if (!(p->std & V4L2_STD_MN)) |
|
type |= F8MHZ; |
|
|
|
/* Add audio hack to std mask */ |
|
p->std |= parse_audio_std_option(); |
|
|
|
return generic_set_freq(fe, 62500l * p->frequency, |
|
V4L2_TUNER_ANALOG_TV, type, p->std, 0); |
|
} |
|
|
|
static int xc2028_set_params(struct dvb_frontend *fe) |
|
{ |
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
|
u32 delsys = c->delivery_system; |
|
u32 bw = c->bandwidth_hz; |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int rc; |
|
unsigned int type = 0; |
|
u16 demod = 0; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
switch (delsys) { |
|
case SYS_DVBT: |
|
case SYS_DVBT2: |
|
/* |
|
* The only countries with 6MHz seem to be Taiwan/Uruguay. |
|
* Both seem to require QAM firmware for OFDM decoding |
|
* Tested in Taiwan by Terry Wu <[email protected]> |
|
*/ |
|
if (bw <= 6000000) |
|
type |= QAM; |
|
|
|
switch (priv->ctrl.type) { |
|
case XC2028_D2633: |
|
type |= D2633; |
|
break; |
|
case XC2028_D2620: |
|
type |= D2620; |
|
break; |
|
case XC2028_AUTO: |
|
default: |
|
/* Zarlink seems to need D2633 */ |
|
if (priv->ctrl.demod == XC3028_FE_ZARLINK456) |
|
type |= D2633; |
|
else |
|
type |= D2620; |
|
} |
|
break; |
|
case SYS_ATSC: |
|
/* The only ATSC firmware (at least on v2.7) is D2633 */ |
|
type |= ATSC | D2633; |
|
break; |
|
/* DVB-S and pure QAM (FE_QAM) are not supported */ |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
if (bw <= 6000000) { |
|
type |= DTV6; |
|
priv->ctrl.vhfbw7 = 0; |
|
priv->ctrl.uhfbw8 = 0; |
|
} else if (bw <= 7000000) { |
|
if (c->frequency < 470000000) |
|
priv->ctrl.vhfbw7 = 1; |
|
else |
|
priv->ctrl.uhfbw8 = 0; |
|
type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7; |
|
type |= F8MHZ; |
|
} else { |
|
if (c->frequency < 470000000) |
|
priv->ctrl.vhfbw7 = 0; |
|
else |
|
priv->ctrl.uhfbw8 = 1; |
|
type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8; |
|
type |= F8MHZ; |
|
} |
|
|
|
/* All S-code tables need a 200kHz shift */ |
|
if (priv->ctrl.demod) { |
|
demod = priv->ctrl.demod; |
|
|
|
/* |
|
* Newer firmwares require a 200 kHz offset only for ATSC |
|
*/ |
|
if (type == ATSC || priv->firm_version < 0x0302) |
|
demod += 200; |
|
/* |
|
* The DTV7 S-code table needs a 700 kHz shift. |
|
* |
|
* DTV7 is only used in Australia. Germany or Italy may also |
|
* use this firmware after initialization, but a tune to a UHF |
|
* channel should then cause DTV78 to be used. |
|
* |
|
* Unfortunately, on real-field tests, the s-code offset |
|
* didn't work as expected, as reported by |
|
* Robert Lowery <[email protected]> |
|
*/ |
|
} |
|
|
|
return generic_set_freq(fe, c->frequency, |
|
V4L2_TUNER_DIGITAL_TV, type, 0, demod); |
|
} |
|
|
|
static int xc2028_sleep(struct dvb_frontend *fe) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int rc; |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
/* Device is already in sleep mode */ |
|
if (!rc) |
|
return 0; |
|
|
|
/* Avoid firmware reload on slow devices or if PM disabled */ |
|
if (no_poweroff || priv->ctrl.disable_power_mgmt) |
|
return 0; |
|
|
|
tuner_dbg("Putting xc2028/3028 into poweroff mode.\n"); |
|
if (debug > 1) { |
|
tuner_dbg("Printing sleep stack trace:\n"); |
|
dump_stack(); |
|
} |
|
|
|
mutex_lock(&priv->lock); |
|
|
|
if (priv->firm_version < 0x0202) |
|
rc = send_seq(priv, {0x00, XREG_POWER_DOWN, 0x00, 0x00}); |
|
else |
|
rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00}); |
|
|
|
if (rc >= 0) |
|
priv->state = XC2028_SLEEP; |
|
|
|
mutex_unlock(&priv->lock); |
|
|
|
return rc; |
|
} |
|
|
|
static void xc2028_dvb_release(struct dvb_frontend *fe) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
mutex_lock(&xc2028_list_mutex); |
|
|
|
/* only perform final cleanup if this is the last instance */ |
|
if (hybrid_tuner_report_instance_count(priv) == 1) |
|
free_firmware(priv); |
|
|
|
if (priv) |
|
hybrid_tuner_release_state(priv); |
|
|
|
mutex_unlock(&xc2028_list_mutex); |
|
|
|
fe->tuner_priv = NULL; |
|
} |
|
|
|
static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int rc; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
rc = check_device_status(priv); |
|
if (rc < 0) |
|
return rc; |
|
|
|
*frequency = priv->frequency; |
|
|
|
return 0; |
|
} |
|
|
|
static void load_firmware_cb(const struct firmware *fw, |
|
void *context) |
|
{ |
|
struct dvb_frontend *fe = context; |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
int rc; |
|
|
|
tuner_dbg("request_firmware_nowait(): %s\n", fw ? "OK" : "error"); |
|
if (!fw) { |
|
tuner_err("Could not load firmware %s.\n", priv->fname); |
|
priv->state = XC2028_NODEV; |
|
return; |
|
} |
|
|
|
rc = load_all_firmwares(fe, fw); |
|
|
|
release_firmware(fw); |
|
|
|
if (rc < 0) |
|
return; |
|
priv->state = XC2028_ACTIVE; |
|
} |
|
|
|
static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg) |
|
{ |
|
struct xc2028_data *priv = fe->tuner_priv; |
|
struct xc2028_ctrl *p = priv_cfg; |
|
int rc = 0; |
|
|
|
tuner_dbg("%s called\n", __func__); |
|
|
|
mutex_lock(&priv->lock); |
|
|
|
/* |
|
* Copy the config data. |
|
*/ |
|
memcpy(&priv->ctrl, p, sizeof(priv->ctrl)); |
|
|
|
/* |
|
* If firmware name changed, frees firmware. As free_firmware will |
|
* reset the status to NO_FIRMWARE, this forces a new request_firmware |
|
*/ |
|
if (!firmware_name[0] && p->fname && |
|
priv->fname && strcmp(p->fname, priv->fname)) |
|
free_firmware(priv); |
|
|
|
if (priv->ctrl.max_len < 9) |
|
priv->ctrl.max_len = 13; |
|
|
|
if (priv->state == XC2028_NO_FIRMWARE) { |
|
if (!firmware_name[0]) |
|
priv->fname = kstrdup(p->fname, GFP_KERNEL); |
|
else |
|
priv->fname = firmware_name; |
|
|
|
if (!priv->fname) { |
|
rc = -ENOMEM; |
|
goto unlock; |
|
} |
|
|
|
rc = request_firmware_nowait(THIS_MODULE, 1, |
|
priv->fname, |
|
priv->i2c_props.adap->dev.parent, |
|
GFP_KERNEL, |
|
fe, load_firmware_cb); |
|
if (rc < 0) { |
|
tuner_err("Failed to request firmware %s\n", |
|
priv->fname); |
|
priv->state = XC2028_NODEV; |
|
} else |
|
priv->state = XC2028_WAITING_FIRMWARE; |
|
} |
|
unlock: |
|
mutex_unlock(&priv->lock); |
|
|
|
return rc; |
|
} |
|
|
|
static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = { |
|
.info = { |
|
.name = "Xceive XC3028", |
|
.frequency_min_hz = 42 * MHz, |
|
.frequency_max_hz = 864 * MHz, |
|
.frequency_step_hz = 50 * kHz, |
|
}, |
|
|
|
.set_config = xc2028_set_config, |
|
.set_analog_params = xc2028_set_analog_freq, |
|
.release = xc2028_dvb_release, |
|
.get_frequency = xc2028_get_frequency, |
|
.get_rf_strength = xc2028_signal, |
|
.get_afc = xc2028_get_afc, |
|
.set_params = xc2028_set_params, |
|
.sleep = xc2028_sleep, |
|
}; |
|
|
|
struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe, |
|
struct xc2028_config *cfg) |
|
{ |
|
struct xc2028_data *priv; |
|
int instance; |
|
|
|
if (debug) |
|
printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n"); |
|
|
|
if (NULL == cfg) |
|
return NULL; |
|
|
|
if (!fe) { |
|
printk(KERN_ERR "xc2028: No frontend!\n"); |
|
return NULL; |
|
} |
|
|
|
mutex_lock(&xc2028_list_mutex); |
|
|
|
instance = hybrid_tuner_request_state(struct xc2028_data, priv, |
|
hybrid_tuner_instance_list, |
|
cfg->i2c_adap, cfg->i2c_addr, |
|
"xc2028"); |
|
switch (instance) { |
|
case 0: |
|
/* memory allocation failure */ |
|
goto fail; |
|
case 1: |
|
/* new tuner instance */ |
|
priv->ctrl.max_len = 13; |
|
|
|
mutex_init(&priv->lock); |
|
|
|
fe->tuner_priv = priv; |
|
break; |
|
case 2: |
|
/* existing tuner instance */ |
|
fe->tuner_priv = priv; |
|
break; |
|
} |
|
|
|
memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops, |
|
sizeof(xc2028_dvb_tuner_ops)); |
|
|
|
tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner"); |
|
|
|
if (cfg->ctrl) |
|
xc2028_set_config(fe, cfg->ctrl); |
|
|
|
mutex_unlock(&xc2028_list_mutex); |
|
|
|
return fe; |
|
fail: |
|
mutex_unlock(&xc2028_list_mutex); |
|
|
|
xc2028_dvb_release(fe); |
|
return NULL; |
|
} |
|
|
|
EXPORT_SYMBOL(xc2028_attach); |
|
|
|
MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver"); |
|
MODULE_AUTHOR("Michel Ludwig <[email protected]>"); |
|
MODULE_AUTHOR("Mauro Carvalho Chehab <[email protected]>"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_FIRMWARE(XC2028_DEFAULT_FIRMWARE); |
|
MODULE_FIRMWARE(XC3028L_DEFAULT_FIRMWARE);
|
|
|