| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mauro Carvalho Chehab | 4396 | 68.58% | 67 | 53.60% |
| Christopher Pascoe | 1256 | 19.59% | 22 | 17.60% |
| Michel Ludwig | 317 | 4.95% | 4 | 3.20% |
| Michael Ira Krufky | 169 | 2.64% | 5 | 4.00% |
| Takashi Iwai | 70 | 1.09% | 1 | 0.80% |
| Miroslav Slugen | 52 | 0.81% | 1 | 0.80% |
| Thierry Reding | 39 | 0.61% | 1 | 0.80% |
| Al Viro | 36 | 0.56% | 1 | 0.80% |
| Harvey Harrison | 15 | 0.23% | 2 | 1.60% |
| Devin Heitmueller | 12 | 0.19% | 3 | 2.40% |
| Antti Palosaari | 10 | 0.16% | 2 | 1.60% |
| Alina Friedrichsen | 6 | 0.09% | 1 | 0.80% |
| Dan Carpenter | 6 | 0.09% | 3 | 2.40% |
| Gianluca Gennari | 6 | 0.09% | 1 | 0.80% |
| Hans Verkuil | 5 | 0.08% | 2 | 1.60% |
| Thomas Meyer | 3 | 0.05% | 1 | 0.80% |
| Tejun Heo | 3 | 0.05% | 1 | 0.80% |
| Andy Shevchenko | 2 | 0.03% | 1 | 0.80% |
| Andy Walls | 2 | 0.03% | 1 | 0.80% |
| Ezequiel García | 1 | 0.02% | 1 | 0.80% |
| Max Kellermann | 1 | 0.02% | 1 | 0.80% |
| Hans Petter Selasky | 1 | 0.02% | 1 | 0.80% |
| Samuel Ortiz | 1 | 0.02% | 1 | 0.80% |
| Adrian Bunk | 1 | 0.02% | 1 | 0.80% |
| Total | 6410 | 125 |
// SPDX-License-Identifier: GPL-2.0 // tuner-xc2028 // // Copyright (c) 2007-2008 Mauro Carvalho Chehab <mchehab@kernel.org> // // Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com) // - frontend interface #include <linux/i2c.h> #include <asm/div64.h> #include <linux/firmware.h> #include <linux/videodev2.h> #include <linux/delay.h> #include <media/tuner.h> #include <linux/mutex.h> #include <linux/slab.h> #include <asm/unaligned.h> #include "tuner-i2c.h" #include "tuner-xc2028.h" #include "tuner-xc2028-types.h" #include <linux/dvb/frontend.h> #include <media/dvb_frontend.h> /* Max transfer size done by I2C transfer functions */ #define MAX_XFER_SIZE 80 /* Registers (Write-only) */ #define XREG_INIT 0x00 #define XREG_RF_FREQ 0x02 #define XREG_POWER_DOWN 0x08 /* Registers (Read-only) */ #define XREG_FREQ_ERROR 0x01 #define XREG_LOCK 0x02 #define XREG_VERSION 0x04 #define XREG_PRODUCT_ID 0x08 #define XREG_HSYNC_FREQ 0x10 #define XREG_FRAME_LINES 0x20 #define XREG_SNR 0x40 #define XREG_ADC_ENV 0x0100 static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "enable verbose debug messages"); static int no_poweroff; module_param(no_poweroff, int, 0644); MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n" "1 keep device energized and with tuner ready all the times.\n" " Faster, but consumes more power and keeps the device hotter\n"); static char audio_std[8]; module_param_string(audio_std, audio_std, sizeof(audio_std), 0); MODULE_PARM_DESC(audio_std, "Audio standard. XC3028 audio decoder explicitly needs to know what audio\n" "standard is needed for some video standards with audio A2 or NICAM.\n" "The valid values are:\n" "A2\n" "A2/A\n" "A2/B\n" "NICAM\n" "NICAM/A\n" "NICAM/B\n"); static char firmware_name[30]; module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0); MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the default firmware name\n"); static LIST_HEAD(hybrid_tuner_instance_list); static DEFINE_MUTEX(xc2028_list_mutex); /* struct for storing firmware table */ struct firmware_description { unsigned int type; v4l2_std_id id; __u16 int_freq; unsigned char *ptr; unsigned int size; }; struct firmware_properties { unsigned int type; v4l2_std_id id; v4l2_std_id std_req; __u16 int_freq; unsigned int scode_table; int scode_nr; }; enum xc2028_state { XC2028_NO_FIRMWARE = 0, XC2028_WAITING_FIRMWARE, XC2028_ACTIVE, XC2028_SLEEP, XC2028_NODEV, }; struct xc2028_data { struct list_head hybrid_tuner_instance_list; struct tuner_i2c_props i2c_props; __u32 frequency; enum xc2028_state state; const char *fname; struct firmware_description *firm; int firm_size; __u16 firm_version; __u16 hwmodel; __u16 hwvers; struct xc2028_ctrl ctrl; struct firmware_properties cur_fw; struct mutex lock; }; #define i2c_send(priv, buf, size) ({ \ int _rc; \ _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \ if (size != _rc) \ tuner_info("i2c output error: rc = %d (should be %d)\n",\ _rc, (int)size); \ if (priv->ctrl.msleep) \ msleep(priv->ctrl.msleep); \ _rc; \ }) #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \ int _rc; \ _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \ ibuf, isize); \ if (isize != _rc) \ tuner_err("i2c input error: rc = %d (should be %d)\n", \ _rc, (int)isize); \ if (priv->ctrl.msleep) \ msleep(priv->ctrl.msleep); \ _rc; \ }) #define send_seq(priv, data...) ({ \ static u8 _val[] = data; \ int _rc; \ if (sizeof(_val) != \ (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \ _val, sizeof(_val)))) { \ tuner_err("Error on line %d: %d\n", __LINE__, _rc); \ } else if (priv->ctrl.msleep) \ msleep(priv->ctrl.msleep); \ _rc; \ }) static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val) { unsigned char buf[2]; unsigned char ibuf[2]; tuner_dbg("%s %04x called\n", __func__, reg); buf[0] = reg >> 8; buf[1] = (unsigned char) reg; if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2) return -EIO; *val = (ibuf[1]) | (ibuf[0] << 8); return 0; } #define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0) static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq) { if (type & BASE) printk(KERN_CONT "BASE "); if (type & INIT1) printk(KERN_CONT "INIT1 "); if (type & F8MHZ) printk(KERN_CONT "F8MHZ "); if (type & MTS) printk(KERN_CONT "MTS "); if (type & D2620) printk(KERN_CONT "D2620 "); if (type & D2633) printk(KERN_CONT "D2633 "); if (type & DTV6) printk(KERN_CONT "DTV6 "); if (type & QAM) printk(KERN_CONT "QAM "); if (type & DTV7) printk(KERN_CONT "DTV7 "); if (type & DTV78) printk(KERN_CONT "DTV78 "); if (type & DTV8) printk(KERN_CONT "DTV8 "); if (type & FM) printk(KERN_CONT "FM "); if (type & INPUT1) printk(KERN_CONT "INPUT1 "); if (type & LCD) printk(KERN_CONT "LCD "); if (type & NOGD) printk(KERN_CONT "NOGD "); if (type & MONO) printk(KERN_CONT "MONO "); if (type & ATSC) printk(KERN_CONT "ATSC "); if (type & IF) printk(KERN_CONT "IF "); if (type & LG60) printk(KERN_CONT "LG60 "); if (type & ATI638) printk(KERN_CONT "ATI638 "); if (type & OREN538) printk(KERN_CONT "OREN538 "); if (type & OREN36) printk(KERN_CONT "OREN36 "); if (type & TOYOTA388) printk(KERN_CONT "TOYOTA388 "); if (type & TOYOTA794) printk(KERN_CONT "TOYOTA794 "); if (type & DIBCOM52) printk(KERN_CONT "DIBCOM52 "); if (type & ZARLINK456) printk(KERN_CONT "ZARLINK456 "); if (type & CHINA) printk(KERN_CONT "CHINA "); if (type & F6MHZ) printk(KERN_CONT "F6MHZ "); if (type & INPUT2) printk(KERN_CONT "INPUT2 "); if (type & SCODE) printk(KERN_CONT "SCODE "); if (type & HAS_IF) printk(KERN_CONT "HAS_IF_%d ", int_freq); } static v4l2_std_id parse_audio_std_option(void) { if (strcasecmp(audio_std, "A2") == 0) return V4L2_STD_A2; if (strcasecmp(audio_std, "A2/A") == 0) return V4L2_STD_A2_A; if (strcasecmp(audio_std, "A2/B") == 0) return V4L2_STD_A2_B; if (strcasecmp(audio_std, "NICAM") == 0) return V4L2_STD_NICAM; if (strcasecmp(audio_std, "NICAM/A") == 0) return V4L2_STD_NICAM_A; if (strcasecmp(audio_std, "NICAM/B") == 0) return V4L2_STD_NICAM_B; return 0; } static int check_device_status(struct xc2028_data *priv) { switch (priv->state) { case XC2028_NO_FIRMWARE: case XC2028_WAITING_FIRMWARE: return -EAGAIN; case XC2028_ACTIVE: return 1; case XC2028_SLEEP: return 0; case XC2028_NODEV: return -ENODEV; } return 0; } static void free_firmware(struct xc2028_data *priv) { int i; tuner_dbg("%s called\n", __func__); /* free allocated f/w string */ if (priv->fname != firmware_name) kfree(priv->fname); priv->fname = NULL; priv->state = XC2028_NO_FIRMWARE; memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); if (!priv->firm) return; for (i = 0; i < priv->firm_size; i++) kfree(priv->firm[i].ptr); kfree(priv->firm); priv->firm = NULL; priv->firm_size = 0; } static int load_all_firmwares(struct dvb_frontend *fe, const struct firmware *fw) { struct xc2028_data *priv = fe->tuner_priv; const unsigned char *p, *endp; int rc = 0; int n, n_array; char name[33]; tuner_dbg("%s called\n", __func__); p = fw->data; endp = p + fw->size; if (fw->size < sizeof(name) - 1 + 2 + 2) { tuner_err("Error: firmware file %s has invalid size!\n", priv->fname); goto corrupt; } memcpy(name, p, sizeof(name) - 1); name[sizeof(name) - 1] = 0; p += sizeof(name) - 1; priv->firm_version = get_unaligned_le16(p); p += 2; n_array = get_unaligned_le16(p); p += 2; tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n", n_array, priv->fname, name, priv->firm_version >> 8, priv->firm_version & 0xff); priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL); if (priv->firm == NULL) { tuner_err("Not enough memory to load firmware file.\n"); rc = -ENOMEM; goto err; } priv->firm_size = n_array; n = -1; while (p < endp) { __u32 type, size; v4l2_std_id id; __u16 int_freq = 0; n++; if (n >= n_array) { tuner_err("More firmware images in file than were expected!\n"); goto corrupt; } /* Checks if there's enough bytes to read */ if (endp - p < sizeof(type) + sizeof(id) + sizeof(size)) goto header; type = get_unaligned_le32(p); p += sizeof(type); id = get_unaligned_le64(p); p += sizeof(id); if (type & HAS_IF) { int_freq = get_unaligned_le16(p); p += sizeof(int_freq); if (endp - p < sizeof(size)) goto header; } size = get_unaligned_le32(p); p += sizeof(size); if (!size || size > endp - p) { tuner_err("Firmware type "); dump_firm_type(type); printk(KERN_CONT "(%x), id %llx is corrupted (size=%zd, expected %d)\n", type, (unsigned long long)id, (endp - p), size); goto corrupt; } priv->firm[n].ptr = kzalloc(size, GFP_KERNEL); if (priv->firm[n].ptr == NULL) { tuner_err("Not enough memory to load firmware file.\n"); rc = -ENOMEM; goto err; } tuner_dbg("Reading firmware type "); if (debug) { dump_firm_type_and_int_freq(type, int_freq); printk(KERN_CONT "(%x), id %llx, size=%d.\n", type, (unsigned long long)id, size); } memcpy(priv->firm[n].ptr, p, size); priv->firm[n].type = type; priv->firm[n].id = id; priv->firm[n].size = size; priv->firm[n].int_freq = int_freq; p += size; } if (n + 1 != priv->firm_size) { tuner_err("Firmware file is incomplete!\n"); goto corrupt; } goto done; header: tuner_err("Firmware header is incomplete!\n"); corrupt: rc = -EINVAL; tuner_err("Error: firmware file is corrupted!\n"); err: tuner_info("Releasing partially loaded firmware file.\n"); free_firmware(priv); done: if (rc == 0) tuner_dbg("Firmware files loaded.\n"); else priv->state = XC2028_NODEV; return rc; } static int seek_firmware(struct dvb_frontend *fe, unsigned int type, v4l2_std_id *id) { struct xc2028_data *priv = fe->tuner_priv; int i, best_i = -1, best_nr_matches = 0; unsigned int type_mask = 0; tuner_dbg("%s called, want type=", __func__); if (debug) { dump_firm_type(type); printk(KERN_CONT "(%x), id %016llx.\n", type, (unsigned long long)*id); } if (!priv->firm) { tuner_err("Error! firmware not loaded\n"); return -EINVAL; } if (((type & ~SCODE) == 0) && (*id == 0)) *id = V4L2_STD_PAL; if (type & BASE) type_mask = BASE_TYPES; else if (type & SCODE) { type &= SCODE_TYPES; type_mask = SCODE_TYPES & ~HAS_IF; } else if (type & DTV_TYPES) type_mask = DTV_TYPES; else if (type & STD_SPECIFIC_TYPES) type_mask = STD_SPECIFIC_TYPES; type &= type_mask; if (!(type & SCODE)) type_mask = ~0; /* Seek for exact match */ for (i = 0; i < priv->firm_size; i++) { if ((type == (priv->firm[i].type & type_mask)) && (*id == priv->firm[i].id)) goto found; } /* Seek for generic video standard match */ for (i = 0; i < priv->firm_size; i++) { v4l2_std_id match_mask; int nr_matches; if (type != (priv->firm[i].type & type_mask)) continue; match_mask = *id & priv->firm[i].id; if (!match_mask) continue; if ((*id & match_mask) == *id) goto found; /* Supports all the requested standards */ nr_matches = hweight64(match_mask); if (nr_matches > best_nr_matches) { best_nr_matches = nr_matches; best_i = i; } } if (best_nr_matches > 0) { tuner_dbg("Selecting best matching firmware (%d bits) for type=", best_nr_matches); dump_firm_type(type); printk(KERN_CONT "(%x), id %016llx:\n", type, (unsigned long long)*id); i = best_i; goto found; } /*FIXME: Would make sense to seek for type "hint" match ? */ i = -ENOENT; goto ret; found: *id = priv->firm[i].id; ret: tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found"); if (debug) { dump_firm_type(type); printk(KERN_CONT "(%x), id %016llx.\n", type, (unsigned long long)*id); } return i; } static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg) { struct xc2028_data *priv = fe->tuner_priv; /* analog side (tuner-core) uses i2c_adap->algo_data. * digital side is not guaranteed to have algo_data defined. * * digital side will always have fe->dvb defined. * analog side (tuner-core) doesn't (yet) define fe->dvb. */ return (!fe->callback) ? -EINVAL : fe->callback(((fe->dvb) && (fe->dvb->priv)) ? fe->dvb->priv : priv->i2c_props.adap->algo_data, DVB_FRONTEND_COMPONENT_TUNER, cmd, arg); } static int load_firmware(struct dvb_frontend *fe, unsigned int type, v4l2_std_id *id) { struct xc2028_data *priv = fe->tuner_priv; int pos, rc; unsigned char *p, *endp, buf[MAX_XFER_SIZE]; if (priv->ctrl.max_len > sizeof(buf)) priv->ctrl.max_len = sizeof(buf); tuner_dbg("%s called\n", __func__); pos = seek_firmware(fe, type, id); if (pos < 0) return pos; tuner_info("Loading firmware for type="); dump_firm_type(priv->firm[pos].type); printk(KERN_CONT "(%x), id %016llx.\n", priv->firm[pos].type, (unsigned long long)*id); p = priv->firm[pos].ptr; endp = p + priv->firm[pos].size; while (p < endp) { __u16 size; /* 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 <rglowery@exemail.com.au> */ #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 <terrywu2009@gmail.com> */ 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 <rglowery@exemail.com.au> */ } 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 <michel.ludwig@gmail.com>"); MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>"); MODULE_LICENSE("GPL v2"); MODULE_FIRMWARE(XC2028_DEFAULT_FIRMWARE); MODULE_FIRMWARE(XC3028L_DEFAULT_FIRMWARE);
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