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path: root/drivers/media/common/tuners/tuner-xc2028.c
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Diffstat (limited to 'drivers/media/common/tuners/tuner-xc2028.c')
-rw-r--r--drivers/media/common/tuners/tuner-xc2028.c1377
1 files changed, 1377 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
new file mode 100644
index 00000000..b5ee3ebf
--- /dev/null
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -0,0 +1,1377 @@
+/* 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;
+};
+
+struct xc2028_data {
+ struct list_head hybrid_tuner_instance_list;
+ struct tuner_i2c_props i2c_props;
+ __u32 frequency;
+
+ 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 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;
+
+ memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
+}
+
+static int load_all_firmwares(struct dvb_frontend *fe)
+{
+ struct xc2028_data *priv = fe->tuner_priv;
+ const struct firmware *fw = NULL;
+ const unsigned char *p, *endp;
+ int rc = 0;
+ int n, n_array;
+ char name[33];
+ char *fname;
+
+ tuner_dbg("%s called\n", __func__);
+
+ if (!firmware_name[0])
+ fname = priv->ctrl.fname;
+ else
+ fname = firmware_name;
+
+ tuner_dbg("Reading firmware %s\n", fname);
+ rc = request_firmware(&fw, fname, priv->i2c_props.adap->dev.parent);
+ if (rc < 0) {
+ if (rc == -ENOENT)
+ tuner_err("Error: firmware %s not found.\n",
+ fname);
+ else
+ tuner_err("Error %d while requesting firmware %s \n",
+ rc, fname);
+
+ return rc;
+ }
+ 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",
+ 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, 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:
+ release_firmware(fw);
+ if (rc == 0)
+ tuner_dbg("Firmware files loaded.\n");
+
+ 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 = 0, retry_count = 0;
+ u16 version, hwmodel;
+ v4l2_std_id std0;
+
+ tuner_dbg("%s called\n", __func__);
+
+ if (!priv->firm) {
+ if (!priv->ctrl.fname) {
+ tuner_info("xc2028/3028 firmware name not set!\n");
+ return -EINVAL;
+ }
+
+ rc = load_all_firmwares(fe);
+ 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 */
+ if (((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;
+
+ return 0;
+
+fail:
+ 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;
+
+ tuner_dbg("%s called\n", __func__);
+
+ mutex_lock(&priv->lock);
+
+ /* Sync Lock Indicator */
+ rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
+ if (rc < 0)
+ goto ret;
+
+ /* Frequency is locked */
+ if (frq_lock == 1)
+ signal = 1 << 11;
+
+ /* Get SNR of the video signal */
+ rc = xc2028_get_reg(priv, XREG_SNR, &signal);
+ if (rc < 0)
+ goto ret;
+
+ /* Use both frq_lock and signal to generate the result */
+ signal = signal || ((signal & 0x07) << 12);
+
+ret:
+ mutex_unlock(&priv->lock);
+
+ *strength = signal;
+
+ tuner_dbg("signal strength is %d\n", signal);
+
+ 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;
+ unsigned int type=0;
+ u16 demod = 0;
+
+ tuner_dbg("%s called\n", __func__);
+
+ 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 = 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});
+
+ priv->cur_fw.type = 0; /* need firmware reload */
+
+ mutex_unlock(&priv->lock);
+
+ return rc;
+}
+
+static int 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) {
+ kfree(priv->ctrl.fname);
+ free_firmware(priv);
+ }
+
+ if (priv)
+ hybrid_tuner_release_state(priv);
+
+ mutex_unlock(&xc2028_list_mutex);
+
+ fe->tuner_priv = NULL;
+
+ return 0;
+}
+
+static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct xc2028_data *priv = fe->tuner_priv;
+
+ tuner_dbg("%s called\n", __func__);
+
+ *frequency = priv->frequency;
+
+ return 0;
+}
+
+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);
+
+ memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
+ if (priv->ctrl.max_len < 9)
+ priv->ctrl.max_len = 13;
+
+ if (p->fname) {
+ if (priv->ctrl.fname && strcmp(p->fname, priv->ctrl.fname)) {
+ kfree(priv->ctrl.fname);
+ free_firmware(priv);
+ }
+
+ priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
+ if (priv->ctrl.fname == NULL)
+ rc = -ENOMEM;
+ }
+
+ mutex_unlock(&priv->lock);
+
+ return rc;
+}
+
+static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
+ .info = {
+ .name = "Xceive XC3028",
+ .frequency_min = 42000000,
+ .frequency_max = 864000000,
+ .frequency_step = 50000,
+ },
+
+ .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,
+ .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;
+ break;
+ 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@infradead.org>");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-12-22 11:41:55 +0000