diff options
Diffstat (limited to 'drivers/media/common/tuners/tuner-xc2028.c')
| -rw-r--r-- | drivers/media/common/tuners/tuner-xc2028.c | 1510 |
1 files changed, 0 insertions, 1510 deletions
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c deleted file mode 100644 index ea0550eafe7d..000000000000 --- a/drivers/media/common/tuners/tuner-xc2028.c +++ /dev/null @@ -1,1510 +0,0 @@ -/* tuner-xc2028 - * - * Copyright (c) 2007-2008 Mauro Carvalho Chehab (mchehab@infradead.org) - * - * Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com) - * - frontend interface - * - * This code is placed under the terms of the GNU General Public License v2 - */ - -#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 "dvb_frontend.h" - -/* 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_rcv(priv, buf, size) ({ \ - int _rc; \ - _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \ - if (size != _rc) \ - tuner_err("i2c input error: rc = %d (should be %d)\n", \ - _rc, (int)size); \ - _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("BASE "); - if (type & INIT1) - printk("INIT1 "); - if (type & F8MHZ) - printk("F8MHZ "); - if (type & MTS) - printk("MTS "); - if (type & D2620) - printk("D2620 "); - if (type & D2633) - printk("D2633 "); - if (type & DTV6) - printk("DTV6 "); - if (type & QAM) - printk("QAM "); - if (type & DTV7) - printk("DTV7 "); - if (type & DTV78) - printk("DTV78 "); - if (type & DTV8) - printk("DTV8 "); - if (type & FM) - printk("FM "); - if (type & INPUT1) - printk("INPUT1 "); - if (type & LCD) - printk("LCD "); - if (type & NOGD) - printk("NOGD "); - if (type & MONO) - printk("MONO "); - if (type & ATSC) - printk("ATSC "); - if (type & IF) - printk("IF "); - if (type & LG60) - printk("LG60 "); - if (type & ATI638) - printk("ATI638 "); - if (type & OREN538) - printk("OREN538 "); - if (type & OREN36) - printk("OREN36 "); - if (type & TOYOTA388) - printk("TOYOTA388 "); - if (type & TOYOTA794) - printk("TOYOTA794 "); - if (type & DIBCOM52) - printk("DIBCOM52 "); - if (type & ZARLINK456) - printk("ZARLINK456 "); - if (type & CHINA) - printk("CHINA "); - if (type & F6MHZ) - printk("F6MHZ "); - if (type & INPUT2) - printk("INPUT2 "); - if (type & SCODE) - printk("SCODE "); - if (type & HAS_IF) - printk("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: - 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__); - - 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; - priv->state = XC2028_NO_FIRMWARE; - - memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); -} - -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("(%x), id %llx is corrupted " - "(size=%d, expected %d)\n", - type, (unsigned long long)id, - (unsigned)(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("(%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("(%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("(%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("(%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[priv->ctrl.max_len]; - - 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("(%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(*(__u16 *) 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 %d\n", - size, (int)(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(*(__u16 *)(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("(%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 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("(%x), id %016llx, ", new_fw.type, - (unsigned long long)new_fw.std_req); - if (!int_freq) { - printk("scode_tbl "); - dump_firm_type(priv->ctrl.scode_table); - printk("(%x), ", priv->ctrl.scode_table); - } else - printk("int_freq %d, ", new_fw.int_freq); - printk("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: - memcpy(&priv->cur_fw, &new_fw, sizeof(priv->cur_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: - priv->state = XC2028_SLEEP; - - memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); - if (retry_count < 8) { - msleep(50); - retry_count++; - tuner_dbg("Retrying firmware load\n"); - goto retry; - } - - 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; - - 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; - - 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 bellow 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 - } - - 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= %02x %02x %02x %02x (freq=%d.%03d)\n", - buf[0], buf[1], buf[2], buf[3], - 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; |