f1065c9648
kfree on NULL pointer is a no-op. Signed-off-by: Syam Sidhardhan <s.syam@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1508 lines
34 KiB
C
1508 lines
34 KiB
C
/* tuner-xc2028
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*
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* Copyright (c) 2007-2008 Mauro Carvalho Chehab (mchehab@infradead.org)
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*
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* Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com)
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* - frontend interface
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*
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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/videodev2.h>
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#include <linux/delay.h>
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#include <media/tuner.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <asm/unaligned.h>
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#include "tuner-i2c.h"
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#include "tuner-xc2028.h"
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#include "tuner-xc2028-types.h"
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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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/* Registers (Write-only) */
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#define XREG_INIT 0x00
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#define XREG_RF_FREQ 0x02
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#define XREG_POWER_DOWN 0x08
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/* Registers (Read-only) */
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#define XREG_FREQ_ERROR 0x01
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#define XREG_LOCK 0x02
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#define XREG_VERSION 0x04
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#define XREG_PRODUCT_ID 0x08
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#define XREG_HSYNC_FREQ 0x10
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#define XREG_FRAME_LINES 0x20
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#define XREG_SNR 0x40
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#define XREG_ADC_ENV 0x0100
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable verbose debug messages");
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static int no_poweroff;
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module_param(no_poweroff, int, 0644);
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MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n"
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"1 keep device energized and with tuner ready all the times.\n"
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" Faster, but consumes more power and keeps the device hotter\n");
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static char audio_std[8];
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module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
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MODULE_PARM_DESC(audio_std,
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"Audio standard. XC3028 audio decoder explicitly "
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"needs to know what audio\n"
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"standard is needed for some video standards with audio A2 or NICAM.\n"
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"The valid values are:\n"
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"A2\n"
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"A2/A\n"
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"A2/B\n"
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"NICAM\n"
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"NICAM/A\n"
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"NICAM/B\n");
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static char firmware_name[30];
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module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0);
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MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the "
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"default firmware name\n");
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static LIST_HEAD(hybrid_tuner_instance_list);
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static DEFINE_MUTEX(xc2028_list_mutex);
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/* struct for storing firmware table */
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struct firmware_description {
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unsigned int type;
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v4l2_std_id id;
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__u16 int_freq;
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unsigned char *ptr;
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unsigned int size;
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};
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struct firmware_properties {
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unsigned int type;
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v4l2_std_id id;
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v4l2_std_id std_req;
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__u16 int_freq;
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unsigned int scode_table;
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int scode_nr;
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};
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enum xc2028_state {
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XC2028_NO_FIRMWARE = 0,
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XC2028_WAITING_FIRMWARE,
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XC2028_ACTIVE,
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XC2028_SLEEP,
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XC2028_NODEV,
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};
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struct xc2028_data {
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struct list_head hybrid_tuner_instance_list;
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struct tuner_i2c_props i2c_props;
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__u32 frequency;
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enum xc2028_state state;
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const char *fname;
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struct firmware_description *firm;
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int firm_size;
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__u16 firm_version;
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__u16 hwmodel;
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__u16 hwvers;
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struct xc2028_ctrl ctrl;
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struct firmware_properties cur_fw;
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struct mutex lock;
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};
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#define i2c_send(priv, buf, size) ({ \
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int _rc; \
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_rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \
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if (size != _rc) \
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tuner_info("i2c output error: rc = %d (should be %d)\n",\
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_rc, (int)size); \
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if (priv->ctrl.msleep) \
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msleep(priv->ctrl.msleep); \
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_rc; \
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})
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#define i2c_rcv(priv, buf, size) ({ \
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int _rc; \
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_rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \
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if (size != _rc) \
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tuner_err("i2c input error: rc = %d (should be %d)\n", \
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_rc, (int)size); \
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_rc; \
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})
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#define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \
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int _rc; \
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_rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \
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ibuf, isize); \
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if (isize != _rc) \
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tuner_err("i2c input error: rc = %d (should be %d)\n", \
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_rc, (int)isize); \
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if (priv->ctrl.msleep) \
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msleep(priv->ctrl.msleep); \
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_rc; \
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})
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#define send_seq(priv, data...) ({ \
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static u8 _val[] = data; \
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int _rc; \
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if (sizeof(_val) != \
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(_rc = tuner_i2c_xfer_send(&priv->i2c_props, \
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_val, sizeof(_val)))) { \
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tuner_err("Error on line %d: %d\n", __LINE__, _rc); \
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} else if (priv->ctrl.msleep) \
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msleep(priv->ctrl.msleep); \
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_rc; \
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})
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static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
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{
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unsigned char buf[2];
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unsigned char ibuf[2];
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tuner_dbg("%s %04x called\n", __func__, reg);
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buf[0] = reg >> 8;
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buf[1] = (unsigned char) reg;
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if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
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return -EIO;
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*val = (ibuf[1]) | (ibuf[0] << 8);
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return 0;
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}
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#define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0)
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static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq)
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{
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if (type & BASE)
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printk("BASE ");
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if (type & INIT1)
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printk("INIT1 ");
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if (type & F8MHZ)
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printk("F8MHZ ");
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if (type & MTS)
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printk("MTS ");
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if (type & D2620)
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printk("D2620 ");
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if (type & D2633)
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printk("D2633 ");
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if (type & DTV6)
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printk("DTV6 ");
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if (type & QAM)
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printk("QAM ");
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if (type & DTV7)
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printk("DTV7 ");
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if (type & DTV78)
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printk("DTV78 ");
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if (type & DTV8)
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printk("DTV8 ");
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if (type & FM)
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printk("FM ");
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if (type & INPUT1)
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printk("INPUT1 ");
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if (type & LCD)
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printk("LCD ");
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if (type & NOGD)
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printk("NOGD ");
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if (type & MONO)
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printk("MONO ");
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if (type & ATSC)
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printk("ATSC ");
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if (type & IF)
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printk("IF ");
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if (type & LG60)
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printk("LG60 ");
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if (type & ATI638)
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printk("ATI638 ");
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if (type & OREN538)
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printk("OREN538 ");
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if (type & OREN36)
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printk("OREN36 ");
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if (type & TOYOTA388)
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printk("TOYOTA388 ");
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if (type & TOYOTA794)
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printk("TOYOTA794 ");
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if (type & DIBCOM52)
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printk("DIBCOM52 ");
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if (type & ZARLINK456)
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printk("ZARLINK456 ");
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if (type & CHINA)
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printk("CHINA ");
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if (type & F6MHZ)
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printk("F6MHZ ");
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if (type & INPUT2)
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printk("INPUT2 ");
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if (type & SCODE)
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printk("SCODE ");
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if (type & HAS_IF)
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printk("HAS_IF_%d ", int_freq);
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}
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static v4l2_std_id parse_audio_std_option(void)
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{
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if (strcasecmp(audio_std, "A2") == 0)
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return V4L2_STD_A2;
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if (strcasecmp(audio_std, "A2/A") == 0)
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return V4L2_STD_A2_A;
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if (strcasecmp(audio_std, "A2/B") == 0)
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return V4L2_STD_A2_B;
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if (strcasecmp(audio_std, "NICAM") == 0)
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return V4L2_STD_NICAM;
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if (strcasecmp(audio_std, "NICAM/A") == 0)
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return V4L2_STD_NICAM_A;
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if (strcasecmp(audio_std, "NICAM/B") == 0)
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return V4L2_STD_NICAM_B;
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return 0;
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}
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static int check_device_status(struct xc2028_data *priv)
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{
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switch (priv->state) {
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case XC2028_NO_FIRMWARE:
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case XC2028_WAITING_FIRMWARE:
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return -EAGAIN;
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case XC2028_ACTIVE:
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case XC2028_SLEEP:
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return 0;
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case XC2028_NODEV:
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return -ENODEV;
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}
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return 0;
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}
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static void free_firmware(struct xc2028_data *priv)
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{
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int i;
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tuner_dbg("%s called\n", __func__);
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if (!priv->firm)
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return;
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for (i = 0; i < priv->firm_size; i++)
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kfree(priv->firm[i].ptr);
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kfree(priv->firm);
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priv->firm = NULL;
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priv->firm_size = 0;
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priv->state = XC2028_NO_FIRMWARE;
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memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
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}
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static int load_all_firmwares(struct dvb_frontend *fe,
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const struct firmware *fw)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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const unsigned char *p, *endp;
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int rc = 0;
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int n, n_array;
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char name[33];
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tuner_dbg("%s called\n", __func__);
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p = fw->data;
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endp = p + fw->size;
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if (fw->size < sizeof(name) - 1 + 2 + 2) {
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tuner_err("Error: firmware file %s has invalid size!\n",
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priv->fname);
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goto corrupt;
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}
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memcpy(name, p, sizeof(name) - 1);
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name[sizeof(name) - 1] = 0;
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p += sizeof(name) - 1;
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priv->firm_version = get_unaligned_le16(p);
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p += 2;
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n_array = get_unaligned_le16(p);
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p += 2;
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tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
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n_array, priv->fname, name,
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priv->firm_version >> 8, priv->firm_version & 0xff);
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priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL);
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if (priv->firm == NULL) {
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tuner_err("Not enough memory to load firmware file.\n");
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rc = -ENOMEM;
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goto err;
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}
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priv->firm_size = n_array;
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n = -1;
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while (p < endp) {
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__u32 type, size;
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v4l2_std_id id;
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__u16 int_freq = 0;
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n++;
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if (n >= n_array) {
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tuner_err("More firmware images in file than "
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"were expected!\n");
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goto corrupt;
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}
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/* Checks if there's enough bytes to read */
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if (endp - p < sizeof(type) + sizeof(id) + sizeof(size))
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goto header;
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type = get_unaligned_le32(p);
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p += sizeof(type);
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id = get_unaligned_le64(p);
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p += sizeof(id);
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if (type & HAS_IF) {
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int_freq = get_unaligned_le16(p);
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p += sizeof(int_freq);
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if (endp - p < sizeof(size))
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goto header;
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}
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size = get_unaligned_le32(p);
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p += sizeof(size);
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if (!size || size > endp - p) {
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tuner_err("Firmware type ");
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dump_firm_type(type);
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printk("(%x), id %llx is corrupted "
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"(size=%d, expected %d)\n",
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type, (unsigned long long)id,
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(unsigned)(endp - p), size);
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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 == NULL) {
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tuner_err("Not enough memory to load firmware file.\n");
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rc = -ENOMEM;
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goto err;
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}
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tuner_dbg("Reading firmware type ");
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if (debug) {
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dump_firm_type_and_int_freq(type, int_freq);
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printk("(%x), id %llx, size=%d.\n",
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type, (unsigned long long)id, size);
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}
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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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priv->firm[n].int_freq = int_freq;
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p += size;
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}
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if (n + 1 != priv->firm_size) {
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tuner_err("Firmware file is incomplete!\n");
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goto corrupt;
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}
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goto done;
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header:
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tuner_err("Firmware header is incomplete!\n");
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corrupt:
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rc = -EINVAL;
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tuner_err("Error: firmware file is corrupted!\n");
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err:
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tuner_info("Releasing partially loaded firmware file.\n");
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free_firmware(priv);
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done:
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if (rc == 0)
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tuner_dbg("Firmware files loaded.\n");
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else
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priv->state = XC2028_NODEV;
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return rc;
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}
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static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
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v4l2_std_id *id)
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{
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struct xc2028_data *priv = fe->tuner_priv;
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int i, best_i = -1, best_nr_matches = 0;
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unsigned int type_mask = 0;
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tuner_dbg("%s called, want type=", __func__);
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if (debug) {
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dump_firm_type(type);
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printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
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}
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if (!priv->firm) {
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tuner_err("Error! firmware not loaded\n");
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return -EINVAL;
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}
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|
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if (((type & ~SCODE) == 0) && (*id == 0))
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*id = V4L2_STD_PAL;
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if (type & BASE)
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type_mask = BASE_TYPES;
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else if (type & SCODE) {
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type &= SCODE_TYPES;
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type_mask = SCODE_TYPES & ~HAS_IF;
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} else if (type & DTV_TYPES)
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type_mask = DTV_TYPES;
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else if (type & STD_SPECIFIC_TYPES)
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type_mask = STD_SPECIFIC_TYPES;
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type &= type_mask;
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|
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if (!(type & SCODE))
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type_mask = ~0;
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|
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/* Seek for exact match */
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for (i = 0; i < priv->firm_size; i++) {
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if ((type == (priv->firm[i].type & type_mask)) &&
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(*id == priv->firm[i].id))
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goto found;
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}
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|
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/* Seek for generic video standard match */
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for (i = 0; i < priv->firm_size; i++) {
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v4l2_std_id match_mask;
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int nr_matches;
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if (type != (priv->firm[i].type & type_mask))
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continue;
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match_mask = *id & priv->firm[i].id;
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if (!match_mask)
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continue;
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if ((*id & match_mask) == *id)
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goto found; /* Supports all the requested standards */
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|
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nr_matches = hweight64(match_mask);
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if (nr_matches > best_nr_matches) {
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best_nr_matches = nr_matches;
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best_i = i;
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}
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}
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|
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if (best_nr_matches > 0) {
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tuner_dbg("Selecting best matching firmware (%d bits) for "
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"type=", best_nr_matches);
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dump_firm_type(type);
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printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
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i = best_i;
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goto found;
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}
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|
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/*FIXME: Would make sense to seek for type "hint" match ? */
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|
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i = -ENOENT;
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goto ret;
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found:
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*id = priv->firm[i].id;
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|
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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:
|
|
priv->cur_fw = new_fw;
|
|
|
|
/*
|
|
* By setting BASE in cur_fw.type only after successfully loading all
|
|
* firmwares, we can:
|
|
* 1. Identify that BASE firmware with type=0 has been loaded;
|
|
* 2. Tell whether BASE firmware was just changed the next time through.
|
|
*/
|
|
priv->cur_fw.type |= BASE;
|
|
priv->state = XC2028_ACTIVE;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
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= %*ph (freq=%d.%03d)\n", 4, buf,
|
|
freq / 1000000, (freq % 1000000) / 1000);
|
|
|
|
rc = 0;
|
|
|
|
ret:
|
|
mutex_unlock(&priv->lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int xc2028_set_analog_freq(struct dvb_frontend *fe,
|
|
struct analog_parameters *p)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
unsigned int type=0;
|
|
|
|
tuner_dbg("%s called\n", __func__);
|
|
|
|
if (p->mode == V4L2_TUNER_RADIO) {
|
|
type |= FM;
|
|
if (priv->ctrl.input1)
|
|
type |= INPUT1;
|
|
return generic_set_freq(fe, (625l * p->frequency) / 10,
|
|
V4L2_TUNER_RADIO, type, 0, 0);
|
|
}
|
|
|
|
/* if std is not defined, choose one */
|
|
if (!p->std)
|
|
p->std = V4L2_STD_MN;
|
|
|
|
/* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
|
|
if (!(p->std & V4L2_STD_MN))
|
|
type |= F8MHZ;
|
|
|
|
/* Add audio hack to std mask */
|
|
p->std |= parse_audio_std_option();
|
|
|
|
return generic_set_freq(fe, 62500l * p->frequency,
|
|
V4L2_TUNER_ANALOG_TV, type, p->std, 0);
|
|
}
|
|
|
|
static int xc2028_set_params(struct dvb_frontend *fe)
|
|
{
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
u32 delsys = c->delivery_system;
|
|
u32 bw = c->bandwidth_hz;
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
int rc;
|
|
unsigned int type = 0;
|
|
u16 demod = 0;
|
|
|
|
tuner_dbg("%s called\n", __func__);
|
|
|
|
rc = check_device_status(priv);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
switch (delsys) {
|
|
case SYS_DVBT:
|
|
case SYS_DVBT2:
|
|
/*
|
|
* The only countries with 6MHz seem to be Taiwan/Uruguay.
|
|
* Both seem to require QAM firmware for OFDM decoding
|
|
* Tested in Taiwan by Terry Wu <terrywu2009@gmail.com>
|
|
*/
|
|
if (bw <= 6000000)
|
|
type |= QAM;
|
|
|
|
switch (priv->ctrl.type) {
|
|
case XC2028_D2633:
|
|
type |= D2633;
|
|
break;
|
|
case XC2028_D2620:
|
|
type |= D2620;
|
|
break;
|
|
case XC2028_AUTO:
|
|
default:
|
|
/* Zarlink seems to need D2633 */
|
|
if (priv->ctrl.demod == XC3028_FE_ZARLINK456)
|
|
type |= D2633;
|
|
else
|
|
type |= D2620;
|
|
}
|
|
break;
|
|
case SYS_ATSC:
|
|
/* The only ATSC firmware (at least on v2.7) is D2633 */
|
|
type |= ATSC | D2633;
|
|
break;
|
|
/* DVB-S and pure QAM (FE_QAM) are not supported */
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (bw <= 6000000) {
|
|
type |= DTV6;
|
|
priv->ctrl.vhfbw7 = 0;
|
|
priv->ctrl.uhfbw8 = 0;
|
|
} else if (bw <= 7000000) {
|
|
if (c->frequency < 470000000)
|
|
priv->ctrl.vhfbw7 = 1;
|
|
else
|
|
priv->ctrl.uhfbw8 = 0;
|
|
type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
|
|
type |= F8MHZ;
|
|
} else {
|
|
if (c->frequency < 470000000)
|
|
priv->ctrl.vhfbw7 = 0;
|
|
else
|
|
priv->ctrl.uhfbw8 = 1;
|
|
type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
|
|
type |= F8MHZ;
|
|
}
|
|
|
|
/* All S-code tables need a 200kHz shift */
|
|
if (priv->ctrl.demod) {
|
|
demod = priv->ctrl.demod;
|
|
|
|
/*
|
|
* Newer firmwares require a 200 kHz offset only for ATSC
|
|
*/
|
|
if (type == ATSC || priv->firm_version < 0x0302)
|
|
demod += 200;
|
|
/*
|
|
* The DTV7 S-code table needs a 700 kHz shift.
|
|
*
|
|
* DTV7 is only used in Australia. Germany or Italy may also
|
|
* use this firmware after initialization, but a tune to a UHF
|
|
* channel should then cause DTV78 to be used.
|
|
*
|
|
* Unfortunately, on real-field tests, the s-code offset
|
|
* didn't work as expected, as reported by
|
|
* Robert Lowery <rglowery@exemail.com.au>
|
|
*/
|
|
}
|
|
|
|
return generic_set_freq(fe, c->frequency,
|
|
V4L2_TUNER_DIGITAL_TV, type, 0, demod);
|
|
}
|
|
|
|
static int xc2028_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
int rc;
|
|
|
|
rc = check_device_status(priv);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* 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->state = XC2028_SLEEP;
|
|
|
|
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) {
|
|
free_firmware(priv);
|
|
kfree(priv->ctrl.fname);
|
|
priv->ctrl.fname = NULL;
|
|
}
|
|
|
|
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;
|
|
int rc;
|
|
|
|
tuner_dbg("%s called\n", __func__);
|
|
|
|
rc = check_device_status(priv);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
*frequency = priv->frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void load_firmware_cb(const struct firmware *fw,
|
|
void *context)
|
|
{
|
|
struct dvb_frontend *fe = context;
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
int rc;
|
|
|
|
tuner_dbg("request_firmware_nowait(): %s\n", fw ? "OK" : "error");
|
|
if (!fw) {
|
|
tuner_err("Could not load firmware %s.\n", priv->fname);
|
|
priv->state = XC2028_NODEV;
|
|
return;
|
|
}
|
|
|
|
rc = load_all_firmwares(fe, fw);
|
|
|
|
release_firmware(fw);
|
|
|
|
if (rc < 0)
|
|
return;
|
|
priv->state = XC2028_SLEEP;
|
|
}
|
|
|
|
static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
|
|
{
|
|
struct xc2028_data *priv = fe->tuner_priv;
|
|
struct xc2028_ctrl *p = priv_cfg;
|
|
int rc = 0;
|
|
|
|
tuner_dbg("%s called\n", __func__);
|
|
|
|
mutex_lock(&priv->lock);
|
|
|
|
/*
|
|
* Copy the config data.
|
|
* For the firmware name, keep a local copy of the string,
|
|
* in order to avoid troubles during device release.
|
|
*/
|
|
kfree(priv->ctrl.fname);
|
|
memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
|
|
if (p->fname) {
|
|
priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
|
|
if (priv->ctrl.fname == NULL)
|
|
rc = -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* If firmware name changed, frees firmware. As free_firmware will
|
|
* reset the status to NO_FIRMWARE, this forces a new request_firmware
|
|
*/
|
|
if (!firmware_name[0] && p->fname &&
|
|
priv->fname && strcmp(p->fname, priv->fname))
|
|
free_firmware(priv);
|
|
|
|
if (priv->ctrl.max_len < 9)
|
|
priv->ctrl.max_len = 13;
|
|
|
|
if (priv->state == XC2028_NO_FIRMWARE) {
|
|
if (!firmware_name[0])
|
|
priv->fname = priv->ctrl.fname;
|
|
else
|
|
priv->fname = firmware_name;
|
|
|
|
rc = request_firmware_nowait(THIS_MODULE, 1,
|
|
priv->fname,
|
|
priv->i2c_props.adap->dev.parent,
|
|
GFP_KERNEL,
|
|
fe, load_firmware_cb);
|
|
if (rc < 0) {
|
|
tuner_err("Failed to request firmware %s\n",
|
|
priv->fname);
|
|
priv->state = XC2028_NODEV;
|
|
} else
|
|
priv->state = XC2028_WAITING_FIRMWARE;
|
|
}
|
|
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,
|
|
.get_afc = xc2028_get_afc,
|
|
.set_params = xc2028_set_params,
|
|
.sleep = xc2028_sleep,
|
|
};
|
|
|
|
struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,
|
|
struct xc2028_config *cfg)
|
|
{
|
|
struct xc2028_data *priv;
|
|
int instance;
|
|
|
|
if (debug)
|
|
printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n");
|
|
|
|
if (NULL == cfg)
|
|
return NULL;
|
|
|
|
if (!fe) {
|
|
printk(KERN_ERR "xc2028: No frontend!\n");
|
|
return NULL;
|
|
}
|
|
|
|
mutex_lock(&xc2028_list_mutex);
|
|
|
|
instance = hybrid_tuner_request_state(struct xc2028_data, priv,
|
|
hybrid_tuner_instance_list,
|
|
cfg->i2c_adap, cfg->i2c_addr,
|
|
"xc2028");
|
|
switch (instance) {
|
|
case 0:
|
|
/* memory allocation failure */
|
|
goto fail;
|
|
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");
|
|
MODULE_FIRMWARE(XC2028_DEFAULT_FIRMWARE);
|
|
MODULE_FIRMWARE(XC3028L_DEFAULT_FIRMWARE);
|