1808a698a8
- priv->count were wrong. Should be incremented since the first usage; - forgot to use list_del() to remove the driver; - Release memory if an error occurs during _attach Thanks to Aidan Thornton <makosoft@googlemail.com> for pointing this. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
772 lines
16 KiB
C
772 lines
16 KiB
C
/* tuner-xc2028
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*
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* Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
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* Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com)
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* - frontend interface
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* This code is placed under the terms of the GNU General Public License v2
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*/
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#include <linux/i2c.h>
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#include <asm/div64.h>
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#include <linux/firmware.h>
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#include <linux/videodev.h>
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#include <linux/delay.h>
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#include <media/tuner.h>
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#include <linux/mutex.h>
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#include "tuner-i2c.h"
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#include "tuner-xc2028.h"
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#include "tuner-xc2028-types.h"
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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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#define PREFIX "xc2028 "
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static LIST_HEAD(xc2028_list);
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/* struct for storing firmware table */
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struct firmware_description {
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unsigned int type;
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v4l2_std_id id;
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unsigned char *ptr;
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unsigned int size;
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};
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struct xc2028_data {
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struct list_head xc2028_list;
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struct tuner_i2c_props i2c_props;
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int (*tuner_callback) (void *dev,
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int command, int arg);
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struct device *dev;
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void *video_dev;
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int count;
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__u32 frequency;
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struct firmware_description *firm;
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int firm_size;
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__u16 version;
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struct xc2028_ctrl ctrl;
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v4l2_std_id firm_type; /* video stds supported
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by current firmware */
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fe_bandwidth_t bandwidth; /* Firmware bandwidth:
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6M, 7M or 8M */
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int need_load_generic; /* The generic firmware
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were loaded? */
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int max_len; /* Max firmware chunk */
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enum tuner_mode mode;
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struct i2c_client *i2c_client;
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struct mutex lock;
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};
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#define i2c_send(rc, priv, buf, size) \
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if (size != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size))) \
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tuner_info("i2c output error: rc = %d (should be %d)\n", \
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rc, (int)size);
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#define i2c_rcv(rc, priv, buf, size) \
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if (size != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size))) \
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tuner_info("i2c input error: rc = %d (should be %d)\n", \
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rc, (int)size);
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#define send_seq(priv, data...) \
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{ int rc; \
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static u8 _val[] = data; \
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if (sizeof(_val) != \
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(rc = tuner_i2c_xfer_send (&priv->i2c_props, \
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_val, sizeof(_val)))) { \
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tuner_info("Error on line %d: %d\n",__LINE__,rc); \
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return -EINVAL; \
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} \
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msleep (10); \
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}
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static int xc2028_get_reg(struct xc2028_data *priv, u16 reg)
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{
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int rc;
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unsigned char buf[1];
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tuner_info("%s called\n", __FUNCTION__);
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buf[0]= reg;
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i2c_send(rc, priv, buf, sizeof(buf));
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if (rc<0)
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return rc;
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i2c_rcv(rc, priv, buf, 2);
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if (rc<0)
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return rc;
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return (buf[1])|(buf[0]<<8);
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}
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static void free_firmware (struct xc2028_data *priv)
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{
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int i;
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if (!priv->firm)
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return;
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for (i=0;i<priv->firm_size;i++) {
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if (priv->firm[i].ptr)
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kfree(priv->firm[i].ptr);
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}
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kfree(priv->firm);
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priv->firm=NULL;
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priv->need_load_generic = 1;
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}
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static int load_all_firmwares (struct dvb_frontend *fe)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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const struct firmware *fw=NULL;
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unsigned char *p, *endp;
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int rc=0, n, n_array;
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char name[33];
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tuner_info("%s called\n", __FUNCTION__);
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tuner_info("Loading firmware %s\n", priv->ctrl.fname);
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rc = request_firmware(&fw, priv->ctrl.fname, priv->dev);
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if (rc < 0) {
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if (rc==-ENOENT)
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tuner_info("Error: firmware %s not found.\n",
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priv->ctrl.fname);
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else
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tuner_info("Error %d while requesting firmware %s \n",
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rc, priv->ctrl.fname);
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return rc;
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}
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p=fw->data;
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endp=p+fw->size;
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if(fw->size<sizeof(name)-1+2) {
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tuner_info("Error: firmware size is zero!\n");
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rc=-EINVAL;
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goto done;
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}
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memcpy(name,p,sizeof(name)-1);
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name[sizeof(name)-1]=0;
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p+=sizeof(name)-1;
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priv->version = le16_to_cpu(*(__u16 *)p);
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p += 2;
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tuner_info("firmware: %s, ver %d.%d\n", name,
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priv->version>>8, priv->version&0xff);
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if (p+2>endp)
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goto corrupt;
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n_array = le16_to_cpu(*(__u16 *)p);
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p += 2;
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tuner_info("there are %d firmwares at %s\n", n_array, priv->ctrl.fname);
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priv->firm=kzalloc(sizeof(*priv->firm)*n_array,GFP_KERNEL);
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if (!fw) {
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tuner_info("Not enough memory for loading firmware.\n");
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rc=-ENOMEM;
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goto done;
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}
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priv->firm_size = n_array;
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n=-1;
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while (p<endp) {
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__u32 type, size;
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v4l2_std_id id;
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n++;
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if (n >= n_array) {
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tuner_info("Too much firmwares at the file\n");
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goto corrupt;
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}
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/* Checks if there's enough bytes to read */
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if (p+sizeof(type)+sizeof(id)+sizeof(size)>endp) {
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tuner_info("Lost firmware!\n");
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goto corrupt;
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}
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type = le32_to_cpu(*(__u32 *)p);
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p += sizeof(type);
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id = le64_to_cpu(*(v4l2_std_id *)p);
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p += sizeof(id);
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size = le32_to_cpu(*(v4l2_std_id *)p);
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p += sizeof(size);
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if ((!size)||(size+p>endp)) {
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tuner_info("Firmware type %x, id %lx corrupt\n",
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type, (unsigned long) id);
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goto corrupt;
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}
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priv->firm[n].ptr=kzalloc(size,GFP_KERNEL);
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if (!priv->firm[n].ptr) {
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tuner_info("Not enough memory.\n");
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rc=-ENOMEM;
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goto err;
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}
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tuner_info("Loading firmware type %x, id %lx, size=%d.\n",
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type, (unsigned long) id, size);
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memcpy(priv->firm[n].ptr, p, size);
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priv->firm[n].type = type;
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priv->firm[n].id = id;
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priv->firm[n].size = size;
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p += size;
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}
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if (n+1 != priv->firm_size) {
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tuner_info("Firmware file is incomplete!\n");
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goto corrupt;
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}
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goto done;
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corrupt:
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rc=-EINVAL;
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tuner_info("Error: firmware file is corrupted!\n");
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err:
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tuner_info("Releasing loaded firmware file.\n");
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free_firmware(priv);
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done:
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release_firmware(fw);
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tuner_info("Firmware files loaded.\n");
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return rc;
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}
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static int load_firmware (struct dvb_frontend *fe, unsigned int type,
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v4l2_std_id *id)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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int i, rc;
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unsigned char *p, *endp, buf[priv->max_len];
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tuner_info("%s called\n", __FUNCTION__);
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if (!priv->firm) {
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printk (KERN_ERR PREFIX "Error! firmware not loaded\n");
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return -EINVAL;
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}
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if ((type == 0) && (*id == 0))
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*id=V4L2_STD_PAL;
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/* Seek for exact match */
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for (i=0;i<priv->firm_size;i++) {
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if ( (type == priv->firm[i].type) &&
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(*id == priv->firm[i].id))
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goto found;
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}
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/* Seek for generic video standard match */
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for (i=0;i<priv->firm_size;i++) {
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if ( (type == priv->firm[i].type) && (*id & priv->firm[i].id))
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goto found;
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}
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/*FIXME: Would make sense to seek for type "hint" match ? */
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tuner_info ("Can't find firmware for type=%x, id=%lx\n", type,
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(long int)*id);
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return -EINVAL;
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found:
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*id = priv->firm[i].id;
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tuner_info ("Found firmware for type=%x, id=%lx\n", type,
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(long int)*id);
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p = priv->firm[i].ptr;
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if (!p) {
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printk(KERN_ERR PREFIX "Firmware pointer were freed!");
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return -EINVAL;
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}
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endp = p+priv->firm[i].size;
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while (p<endp) {
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__u16 size;
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/* Checks if there's enough bytes to read */
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if (p+sizeof(size)>endp) {
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tuner_info("missing bytes\n");
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return -EINVAL;
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}
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size = le16_to_cpu(*(__u16 *)p);
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p += sizeof(size);
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if (size == 0xffff)
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return 0;
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if (!size) {
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/* Special callback command received */
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rc = priv->tuner_callback(priv->video_dev,
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XC2028_TUNER_RESET, 0);
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if (rc<0) {
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tuner_info("Error at RESET code %d\n",
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(*p)&0x7f);
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return -EINVAL;
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}
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continue;
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}
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/* Checks for a sleep command */
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if (size & 0x8000) {
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msleep (size & 0x7fff);
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continue;
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}
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if ((size + p > endp)) {
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tuner_info("missing bytes: need %d, have %d\n",
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size, (int)(endp-p));
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return -EINVAL;
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}
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buf[0] = *p;
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p++;
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size--;
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/* Sends message chunks */
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while (size>0) {
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int len = (size<priv->max_len-1)?size:priv->max_len-1;
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memcpy(buf+1, p, len);
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i2c_send(rc, priv, buf, len+1);
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if (rc<0) {
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tuner_info("%d returned from send\n",rc);
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return -EINVAL;
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}
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p += len;
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size -= len;
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}
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}
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return -EINVAL;
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}
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static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode,
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v4l2_std_id std,
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fe_bandwidth_t bandwidth)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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int rc, version;
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v4l2_std_id std0=0;
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unsigned int type0=0,type=0;
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int change_digital_bandwidth;
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tuner_info("%s called\n", __FUNCTION__);
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if (!priv->firm) {
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if (!priv->ctrl.fname)
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return -EINVAL;
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rc=load_all_firmwares(fe);
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if (rc<0)
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return rc;
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}
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tuner_info( "I am in mode %u and I should switch to mode %i\n",
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priv->mode, new_mode);
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/* first of all, determine whether we have switched the mode */
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if(new_mode != priv->mode) {
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priv->mode = new_mode;
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priv->need_load_generic = 1;
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}
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change_digital_bandwidth = (priv->mode == T_DIGITAL_TV
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&& bandwidth != priv->bandwidth) ? 1 : 0;
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tuner_info("old bandwidth %u, new bandwidth %u\n", priv->bandwidth,
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bandwidth);
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if (priv->need_load_generic) {
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/* Reset is needed before loading firmware */
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rc = priv->tuner_callback(priv->video_dev,
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XC2028_TUNER_RESET, 0);
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if (rc<0)
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return rc;
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type0=BASE;
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if (priv->ctrl.type == XC2028_FIRM_MTS)
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type0 |= MTS;
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if (priv->bandwidth==8)
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type0 |= F8MHZ;
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/* FIXME: How to load FM and FM|INPUT1 firmwares? */
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rc = load_firmware(fe, type0, &std0);
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if (rc<0) {
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tuner_info("Error %d while loading generic firmware\n",
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rc);
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return rc;
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}
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priv->need_load_generic=0;
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priv->firm_type=0;
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if(priv->mode == T_DIGITAL_TV) {
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change_digital_bandwidth=1;
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}
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}
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tuner_info("I should change bandwidth %u\n",
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change_digital_bandwidth);
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if (change_digital_bandwidth) {
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/*FIXME: Should allow selecting between D2620 and D2633 */
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type |= D2620;
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/* FIXME: When should select a DTV78 firmware?
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*/
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switch(bandwidth) {
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case BANDWIDTH_8_MHZ:
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type |= DTV8;
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break;
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case BANDWIDTH_7_MHZ:
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type |= DTV7;
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break;
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case BANDWIDTH_6_MHZ:
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/* FIXME: Should allow select also ATSC */
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type |= DTV6_QAM;
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break;
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default:
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tuner_info("error: bandwidth not supported.\n");
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};
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priv->bandwidth = bandwidth;
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}
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/* Load INIT1, if needed */
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tuner_info("Trying to load init1 firmware\n");
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type0 = BASE | INIT1 | priv->ctrl.type;
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if (priv->ctrl.type == XC2028_FIRM_MTS)
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type0 |= MTS;
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/* FIXME: Should handle errors - if INIT1 found */
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rc = load_firmware(fe, type0, &std0);
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/* FIXME: Should add support for FM radio
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*/
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if (priv->ctrl.type == XC2028_FIRM_MTS)
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type |= MTS;
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tuner_info("firmware standard to load: %08lx\n",(unsigned long) std);
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if (priv->firm_type & std) {
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tuner_info("no need to load a std-specific firmware.\n");
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return 0;
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}
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rc = load_firmware(fe, type, &std);
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if (rc<0)
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return rc;
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version = xc2028_get_reg(priv, 0x4);
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tuner_info("Firmware version is %d.%d\n",
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(version>>4)&0x0f,(version)&0x0f);
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priv->firm_type=std;
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return 0;
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}
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static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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int frq_lock, signal=0;
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tuner_info("%s called\n", __FUNCTION__);
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mutex_lock(&priv->lock);
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*strength = 0;
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frq_lock = xc2028_get_reg(priv, 0x2);
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if (frq_lock<=0)
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goto ret;
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/* Frequency is locked. Return signal quality */
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signal = xc2028_get_reg(priv, 0x40);
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if(signal<=0) {
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signal=frq_lock;
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}
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ret:
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mutex_unlock(&priv->lock);
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*strength = signal;
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return 0;
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}
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#define DIV 15625
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static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */,
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enum tuner_mode new_mode,
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v4l2_std_id std,
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fe_bandwidth_t bandwidth)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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int rc=-EINVAL;
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unsigned char buf[5];
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u32 div, offset = 0;
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tuner_info("%s called\n", __FUNCTION__);
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mutex_lock(&priv->lock);
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/* HACK: It seems that specific firmware need to be reloaded
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when freq is changed */
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priv->firm_type=0;
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/* Reset GPIO 1 */
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rc = priv->tuner_callback(priv->video_dev, XC2028_TUNER_RESET, 0);
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if (rc<0)
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goto ret;
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msleep(10);
|
|
tuner_info("should set frequency %d kHz)\n", freq / 1000);
|
|
|
|
if (check_firmware(fe, new_mode, std, bandwidth)<0)
|
|
goto ret;
|
|
|
|
if(new_mode == T_DIGITAL_TV)
|
|
offset = 2750000;
|
|
|
|
div = (freq - offset + DIV/2)/DIV;
|
|
|
|
/* CMD= Set frequency */
|
|
|
|
if (priv->version<0x0202) {
|
|
send_seq(priv, {0x00, 0x02, 0x00, 0x00});
|
|
} else {
|
|
send_seq(priv, {0x80, 0x02, 0x00, 0x00});
|
|
}
|
|
|
|
rc = priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
|
|
if (rc<0)
|
|
goto ret;
|
|
|
|
msleep(10);
|
|
|
|
buf[0]= 0xff & (div>>24);
|
|
buf[1]= 0xff & (div>>16);
|
|
buf[2]= 0xff & (div>>8);
|
|
buf[3]= 0xff & (div);
|
|
buf[4]= 0;
|
|
|
|
i2c_send(rc, priv, buf, sizeof(buf));
|
|
if (rc<0)
|
|
goto ret;
|
|
msleep(100);
|
|
|
|
priv->frequency=freq;
|
|
|
|
printk("divider= %02x %02x %02x %02x (freq=%d.%02d)\n",
|
|
buf[1],buf[2],buf[3],buf[4],
|
|
freq / 1000000, (freq%1000000)/10000);
|
|
|
|
rc=0;
|
|
|
|
ret:
|
|
mutex_unlock(&priv->lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int xc2028_set_tv_freq(struct dvb_frontend *fe,
|
|
struct analog_parameters *p)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
|
|
tuner_info("%s called\n", __FUNCTION__);
|
|
|
|
return generic_set_tv_freq(fe, 62500l*p->frequency, T_ANALOG_TV,
|
|
p->std,
|
|
BANDWIDTH_8_MHZ /* NOT USED */);
|
|
}
|
|
|
|
static int xc2028_set_params(struct dvb_frontend *fe,
|
|
struct dvb_frontend_parameters *p)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
|
|
tuner_info("%s called\n", __FUNCTION__);
|
|
|
|
/* FIXME: Only OFDM implemented */
|
|
if (fe->ops.info.type != FE_OFDM) {
|
|
tuner_info ("DTV type not implemented.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return generic_set_tv_freq(fe, p->frequency, T_DIGITAL_TV,
|
|
0, /* NOT USED */
|
|
p->u.ofdm.bandwidth);
|
|
|
|
}
|
|
|
|
static int xc2028_dvb_release(struct dvb_frontend *fe)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
|
|
tuner_info("%s called\n", __FUNCTION__);
|
|
|
|
priv->count--;
|
|
|
|
if (!priv->count) {
|
|
list_del(&priv->xc2028_list);
|
|
|
|
if (priv->ctrl.fname)
|
|
kfree(priv->ctrl.fname);
|
|
|
|
free_firmware(priv);
|
|
kfree (priv);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
|
|
tuner_info("%s called\n", __FUNCTION__);
|
|
|
|
*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;
|
|
|
|
tuner_info("%s called\n", __FUNCTION__);
|
|
|
|
priv->ctrl.type = p->type;
|
|
|
|
if (p->fname) {
|
|
if (priv->ctrl.fname)
|
|
kfree(priv->ctrl.fname);
|
|
|
|
priv->ctrl.fname = kmalloc(strlen(p->fname)+1, GFP_KERNEL);
|
|
if (!priv->ctrl.fname)
|
|
return -ENOMEM;
|
|
|
|
free_firmware(priv);
|
|
strcpy(priv->ctrl.fname, p->fname);
|
|
}
|
|
|
|
tuner_info("%s OK\n", __FUNCTION__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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_tv_freq,
|
|
.release = xc2028_dvb_release,
|
|
.get_frequency = xc2028_get_frequency,
|
|
.get_rf_strength = xc2028_signal,
|
|
.set_params = xc2028_set_params,
|
|
|
|
// int (*sleep)(struct dvb_frontend *fe);
|
|
// int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
|
|
// int (*get_status)(struct dvb_frontend *fe, u32 *status);
|
|
};
|
|
|
|
int xc2028_attach(struct dvb_frontend *fe, struct i2c_adapter* i2c_adap,
|
|
u8 i2c_addr, struct device *dev, void *video_dev,
|
|
int (*tuner_callback) (void *dev, int command,int arg))
|
|
{
|
|
struct xc2028_data *priv;
|
|
|
|
printk( KERN_INFO PREFIX "Xcv2028/3028 init called!\n");
|
|
|
|
if (NULL == dev)
|
|
return -ENODEV;
|
|
|
|
if (NULL == video_dev)
|
|
return -ENODEV;
|
|
|
|
if (!tuner_callback) {
|
|
printk( KERN_ERR PREFIX "No tuner callback!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
list_for_each_entry(priv, &xc2028_list, xc2028_list) {
|
|
if (priv->dev == dev) {
|
|
dev = NULL;
|
|
}
|
|
}
|
|
|
|
if (dev) {
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (priv == NULL)
|
|
return -ENOMEM;
|
|
|
|
fe->tuner_priv = priv;
|
|
|
|
priv->bandwidth=BANDWIDTH_6_MHZ;
|
|
priv->need_load_generic=1;
|
|
priv->mode = T_UNINITIALIZED;
|
|
priv->i2c_props.addr = i2c_addr;
|
|
priv->i2c_props.adap = i2c_adap;
|
|
priv->dev = dev;
|
|
priv->video_dev = video_dev;
|
|
priv->tuner_callback = tuner_callback;
|
|
priv->max_len = 13;
|
|
|
|
|
|
mutex_init(&priv->lock);
|
|
|
|
list_add_tail(&priv->xc2028_list,&xc2028_list);
|
|
}
|
|
priv->count++;
|
|
|
|
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");
|
|
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(xc2028_attach);
|
|
|
|
MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
|
|
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
|
|
MODULE_LICENSE("GPL");
|