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V4L/DVB (11398): Support for Legend Silicon LGS8913/LGS8GL5/LGS8GXX China DMB-TH digital demodulator
This patch contains the unified driver for Legend Silicon LGS8913 and LGS8GL5. It should replace lgs8gl5.c in media/dvb/frontends in the future. Signed-off-by: David T.L. Wong <davidtlwong@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
David Wong
Mauro Carvalho Chehab
parent
81d1d09f92
commit
f15da16d86
@ -513,6 +513,13 @@ config DVB_LGS8GL5
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help
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A DMB-TH tuner module. Say Y when you want to support this frontend.
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config DVB_LGS8GXX
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tristate "Legend Silicon LGS8913/LGS8GL5/LGS8GXX DMB-TH demodulator"
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depends on DVB_CORE && I2C
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default m if DVB_FE_CUSTOMISE
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help
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A DMB-TH tuner module. Say Y when you want to support this frontend.
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comment "Tools to develop new frontends"
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config DVB_DUMMY_FE
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@ -61,6 +61,7 @@ obj-$(CONFIG_DVB_TDA10048) += tda10048.o
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obj-$(CONFIG_DVB_TUNER_CX24113) += cx24113.o
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obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
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obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
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obj-$(CONFIG_DVB_LGS8GXX) += lgs8gxx.o
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obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
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obj-$(CONFIG_DVB_AF9013) += af9013.o
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obj-$(CONFIG_DVB_CX24116) += cx24116.o
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816
drivers/media/dvb/frontends/lgs8gxx.c
Normal file
816
drivers/media/dvb/frontends/lgs8gxx.c
Normal file
@ -0,0 +1,816 @@
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/*
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* Support for Legend Silicon DMB-TH demodulator
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* LGS8913, LGS8GL5
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* experimental support LGS8G42, LGS8G52
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*
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* Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
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* Copyright (C) 2008 Sirius International (Hong Kong) Limited
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* Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <asm/div64.h>
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#include "dvb_frontend.h"
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#include "lgs8gxx.h"
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#include "lgs8gxx_priv.h"
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#define dprintk(args...) \
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do { \
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if (debug) \
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printk(KERN_DEBUG "lgs8gxx: " args); \
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} while (0)
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static int debug;
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static int fake_signal_str;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
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module_param(fake_signal_str, int, 0644);
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MODULE_PARM_DESC(fake_signal_str, "fake signal strength for LGS8913."
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"Signal strength calculation is slow.(default:off).");
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/* LGS8GXX internal helper functions */
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static int lgs8gxx_write_reg(struct lgs8gxx_state *priv, u8 reg, u8 data)
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{
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int ret;
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u8 buf[] = { reg, data };
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struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 };
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msg.addr = priv->config->demod_address;
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if (reg >= 0xC0)
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msg.addr += 0x02;
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if (debug >= 2)
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printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
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__func__, reg, data);
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ret = i2c_transfer(priv->i2c, &msg, 1);
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if (ret != 1)
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dprintk(KERN_DEBUG "%s: error reg=0x%x, data=0x%x, ret=%i\n",
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__func__, reg, data, ret);
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return (ret != 1) ? -1 : 0;
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}
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static int lgs8gxx_read_reg(struct lgs8gxx_state *priv, u8 reg, u8 *p_data)
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{
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int ret;
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u8 dev_addr;
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u8 b0[] = { reg };
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u8 b1[] = { 0 };
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struct i2c_msg msg[] = {
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{ .flags = 0, .buf = b0, .len = 1 },
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{ .flags = I2C_M_RD, .buf = b1, .len = 1 },
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};
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dev_addr = priv->config->demod_address;
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if (reg >= 0xC0)
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dev_addr += 0x02;
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msg[1].addr = msg[0].addr = dev_addr;
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ret = i2c_transfer(priv->i2c, msg, 2);
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if (ret != 2) {
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dprintk(KERN_DEBUG "%s: error reg=0x%x, ret=%i\n",
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__func__, reg, ret);
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return -1;
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}
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*p_data = b1[0];
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if (debug >= 2)
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printk(KERN_DEBUG "%s: reg=0x%02X, data=0x%02X\n",
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__func__, reg, b1[0]);
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return 0;
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}
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static int lgs8gxx_soft_reset(struct lgs8gxx_state *priv)
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{
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lgs8gxx_write_reg(priv, 0x02, 0x00);
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msleep(1);
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lgs8gxx_write_reg(priv, 0x02, 0x01);
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msleep(100);
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return 0;
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}
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static int lgs8gxx_set_ad_mode(struct lgs8gxx_state *priv)
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{
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const struct lgs8gxx_config *config = priv->config;
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u8 if_conf;
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if_conf = 0x10; /* AGC output on; */
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if_conf |=
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((config->ext_adc) ? 0x80 : 0x00) |
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((config->if_neg_center) ? 0x04 : 0x00) |
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((config->if_freq == 0) ? 0x08 : 0x00) | /* Baseband */
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((config->ext_adc && config->adc_signed) ? 0x02 : 0x00) |
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((config->ext_adc && config->if_neg_edge) ? 0x01 : 0x00);
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if (config->ext_adc &&
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(config->prod == LGS8GXX_PROD_LGS8G52)) {
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lgs8gxx_write_reg(priv, 0xBA, 0x40);
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}
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lgs8gxx_write_reg(priv, 0x07, if_conf);
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return 0;
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}
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static int lgs8gxx_set_if_freq(struct lgs8gxx_state *priv, u32 freq /*in kHz*/)
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{
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u64 val;
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u32 v32;
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u32 if_clk;
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if_clk = priv->config->if_clk_freq;
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val = freq;
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if (freq != 0) {
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val *= (u64)1 << 32;
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if (if_clk != 0)
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do_div(val, if_clk);
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v32 = val & 0xFFFFFFFF;
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dprintk("Set IF Freq to %dkHz\n", freq);
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} else {
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v32 = 0;
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dprintk("Set IF Freq to baseband\n");
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}
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dprintk("AFC_INIT_FREQ = 0x%08X\n", v32);
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lgs8gxx_write_reg(priv, 0x09, 0xFF & (v32));
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lgs8gxx_write_reg(priv, 0x0A, 0xFF & (v32 >> 8));
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lgs8gxx_write_reg(priv, 0x0B, 0xFF & (v32 >> 16));
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lgs8gxx_write_reg(priv, 0x0C, 0xFF & (v32 >> 24));
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return 0;
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}
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static int lgs8gxx_set_mode_auto(struct lgs8gxx_state *priv)
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{
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u8 t;
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if (priv->config->prod == LGS8GXX_PROD_LGS8913)
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lgs8gxx_write_reg(priv, 0xC6, 0x01);
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lgs8gxx_read_reg(priv, 0x7E, &t);
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lgs8gxx_write_reg(priv, 0x7E, t | 0x01);
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/* clear FEC self reset */
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lgs8gxx_read_reg(priv, 0xC5, &t);
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lgs8gxx_write_reg(priv, 0xC5, t & 0xE0);
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if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
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/* FEC auto detect */
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lgs8gxx_write_reg(priv, 0xC1, 0x03);
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lgs8gxx_read_reg(priv, 0x7C, &t);
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t = (t & 0x8C) | 0x03;
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lgs8gxx_write_reg(priv, 0x7C, t);
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}
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if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
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/* BER test mode */
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lgs8gxx_read_reg(priv, 0xC3, &t);
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t = (t & 0xEF) | 0x10;
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lgs8gxx_write_reg(priv, 0xC3, t);
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}
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if (priv->config->prod == LGS8GXX_PROD_LGS8G52)
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lgs8gxx_write_reg(priv, 0xD9, 0x40);
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return 0;
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}
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static int lgs8gxx_set_mode_manual(struct lgs8gxx_state *priv)
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{
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int ret = 0;
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u8 t;
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/* turn off auto-detect; manual settings */
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lgs8gxx_write_reg(priv, 0x7E, 0);
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if (priv->config->prod == LGS8GXX_PROD_LGS8913)
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lgs8gxx_write_reg(priv, 0xC1, 0);
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ret = lgs8gxx_read_reg(priv, 0xC5, &t);
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t = (t & 0xE0) | 0x06;
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lgs8gxx_write_reg(priv, 0xC5, t);
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lgs8gxx_soft_reset(priv);
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return 0;
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}
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static int lgs8gxx_is_locked(struct lgs8gxx_state *priv, u8 *locked)
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{
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int ret = 0;
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u8 t;
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ret = lgs8gxx_read_reg(priv, 0x4B, &t);
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if (ret != 0)
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return ret;
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*locked = ((t & 0xC0) == 0xC0) ? 1 : 0;
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return 0;
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}
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static int lgs8gxx_is_autodetect_finished(struct lgs8gxx_state *priv,
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u8 *finished)
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{
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int ret = 0;
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u8 t;
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ret = lgs8gxx_read_reg(priv, 0xA4, &t);
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if (ret != 0)
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return ret;
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*finished = ((t & 0x3) == 0x1) ? 1 : 0;
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return 0;
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}
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static int lgs8gxx_autolock_gi(struct lgs8gxx_state *priv, u8 gi, u8 *locked)
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{
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int err;
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u8 ad_fini = 0;
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if (gi == GI_945)
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dprintk("try GI 945\n");
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else if (gi == GI_595)
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dprintk("try GI 595\n");
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else if (gi == GI_420)
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dprintk("try GI 420\n");
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lgs8gxx_write_reg(priv, 0x04, gi);
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lgs8gxx_soft_reset(priv);
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msleep(50);
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err = lgs8gxx_is_autodetect_finished(priv, &ad_fini);
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if (err != 0)
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return err;
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if (ad_fini) {
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err = lgs8gxx_is_locked(priv, locked);
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if (err != 0)
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return err;
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}
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return 0;
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}
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static int lgs8gxx_auto_detect(struct lgs8gxx_state *priv,
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u8 *detected_param, u8 *gi)
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{
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int i, j;
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int err = 0;
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u8 locked = 0, tmp_gi;
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dprintk("%s\n", __func__);
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lgs8gxx_set_mode_auto(priv);
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/* Guard Interval */
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lgs8gxx_write_reg(priv, 0x03, 00);
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for (i = 0; i < 2; i++) {
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for (j = 0; j < 2; j++) {
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tmp_gi = GI_945;
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err = lgs8gxx_autolock_gi(priv, GI_945, &locked);
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if (err)
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goto out;
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if (locked)
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goto locked;
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}
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for (j = 0; j < 2; j++) {
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tmp_gi = GI_420;
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err = lgs8gxx_autolock_gi(priv, GI_420, &locked);
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if (err)
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goto out;
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if (locked)
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goto locked;
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}
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tmp_gi = GI_595;
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err = lgs8gxx_autolock_gi(priv, GI_595, &locked);
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if (err)
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goto out;
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if (locked)
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goto locked;
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}
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locked:
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if ((err == 0) && (locked == 1)) {
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u8 t;
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lgs8gxx_read_reg(priv, 0xA2, &t);
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*detected_param = t;
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if (tmp_gi == GI_945)
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dprintk("GI 945 locked\n");
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else if (tmp_gi == GI_595)
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dprintk("GI 595 locked\n");
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else if (tmp_gi == GI_420)
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dprintk("GI 420 locked\n");
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*gi = tmp_gi;
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}
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if (!locked)
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err = -1;
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out:
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return err;
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}
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static void lgs8gxx_auto_lock(struct lgs8gxx_state *priv)
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{
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s8 err;
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u8 gi = 0x2;
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u8 detected_param = 0;
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err = lgs8gxx_auto_detect(priv, &detected_param, &gi);
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if (err != 0) {
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dprintk("lgs8gxx_auto_detect failed\n");
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}
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/* Apply detected parameters */
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if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
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u8 inter_leave_len = detected_param & TIM_MASK ;
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inter_leave_len = (inter_leave_len == TIM_LONG) ? 0x60 : 0x40;
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detected_param &= CF_MASK | SC_MASK | LGS_FEC_MASK;
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detected_param |= inter_leave_len;
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}
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lgs8gxx_write_reg(priv, 0x7D, detected_param);
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if (priv->config->prod == LGS8GXX_PROD_LGS8913)
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lgs8gxx_write_reg(priv, 0xC0, detected_param);
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/* lgs8gxx_soft_reset(priv); */
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/* Enter manual mode */
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lgs8gxx_set_mode_manual(priv);
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switch (gi) {
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case GI_945:
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priv->curr_gi = 945; break;
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case GI_595:
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priv->curr_gi = 595; break;
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case GI_420:
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priv->curr_gi = 420; break;
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default:
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priv->curr_gi = 945; break;
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}
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}
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static int lgs8gxx_set_mpeg_mode(struct lgs8gxx_state *priv,
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u8 serial, u8 clk_pol, u8 clk_gated)
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{
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int ret = 0;
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u8 t;
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ret = lgs8gxx_read_reg(priv, 0xC2, &t);
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if (ret != 0)
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return ret;
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t &= 0xF8;
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t |= serial ? TS_SERIAL : TS_PARALLEL;
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t |= clk_pol ? TS_CLK_INVERTED : TS_CLK_NORMAL;
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t |= clk_gated ? TS_CLK_GATED : TS_CLK_FREERUN;
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ret = lgs8gxx_write_reg(priv, 0xC2, t);
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if (ret != 0)
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return ret;
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return 0;
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}
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/* LGS8913 demod frontend functions */
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static int lgs8913_init(struct lgs8gxx_state *priv)
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{
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u8 t;
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/* LGS8913 specific */
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lgs8gxx_write_reg(priv, 0xc1, 0x3);
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lgs8gxx_read_reg(priv, 0x7c, &t);
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lgs8gxx_write_reg(priv, 0x7c, (t&0x8c) | 0x3);
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/* LGS8913 specific */
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lgs8gxx_read_reg(priv, 0xc3, &t);
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lgs8gxx_write_reg(priv, 0xc3, t&0x10);
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return 0;
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}
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static int lgs8gxx_init(struct dvb_frontend *fe)
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{
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struct lgs8gxx_state *priv =
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(struct lgs8gxx_state *)fe->demodulator_priv;
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const struct lgs8gxx_config *config = priv->config;
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u8 data = 0;
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s8 err;
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
lgs8gxx_read_reg(priv, 0, &data);
|
||||
dprintk("reg 0 = 0x%02X\n", data);
|
||||
|
||||
/* Setup MPEG output format */
|
||||
err = lgs8gxx_set_mpeg_mode(priv, config->serial_ts,
|
||||
config->ts_clk_pol,
|
||||
config->ts_clk_gated);
|
||||
if (err != 0)
|
||||
return -EIO;
|
||||
|
||||
if (config->prod == LGS8GXX_PROD_LGS8913)
|
||||
lgs8913_init(priv);
|
||||
lgs8gxx_set_if_freq(priv, priv->config->if_freq);
|
||||
if (config->prod != LGS8GXX_PROD_LGS8913)
|
||||
lgs8gxx_set_ad_mode(priv);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void lgs8gxx_release(struct dvb_frontend *fe)
|
||||
{
|
||||
struct lgs8gxx_state *state = fe->demodulator_priv;
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
kfree(state);
|
||||
}
|
||||
|
||||
|
||||
static int lgs8gxx_write(struct dvb_frontend *fe, u8 *buf, int len)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
|
||||
if (len != 2)
|
||||
return -EINVAL;
|
||||
|
||||
return lgs8gxx_write_reg(priv, buf[0], buf[1]);
|
||||
}
|
||||
|
||||
static int lgs8gxx_set_fe(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_parameters *fe_params)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
/* set frequency */
|
||||
if (fe->ops.tuner_ops.set_params) {
|
||||
fe->ops.tuner_ops.set_params(fe, fe_params);
|
||||
if (fe->ops.i2c_gate_ctrl)
|
||||
fe->ops.i2c_gate_ctrl(fe, 0);
|
||||
}
|
||||
|
||||
/* start auto lock */
|
||||
lgs8gxx_auto_lock(priv);
|
||||
|
||||
msleep(10);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_get_fe(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_parameters *fe_params)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
u8 t;
|
||||
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
/* TODO: get real readings from device */
|
||||
/* inversion status */
|
||||
fe_params->inversion = INVERSION_OFF;
|
||||
|
||||
/* bandwidth */
|
||||
fe_params->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
|
||||
|
||||
|
||||
lgs8gxx_read_reg(priv, 0x7D, &t);
|
||||
fe_params->u.ofdm.code_rate_HP = FEC_AUTO;
|
||||
fe_params->u.ofdm.code_rate_LP = FEC_AUTO;
|
||||
|
||||
/* constellation */
|
||||
switch (t & SC_MASK) {
|
||||
case SC_QAM64:
|
||||
fe_params->u.ofdm.constellation = QAM_64;
|
||||
break;
|
||||
case SC_QAM32:
|
||||
fe_params->u.ofdm.constellation = QAM_32;
|
||||
break;
|
||||
case SC_QAM16:
|
||||
fe_params->u.ofdm.constellation = QAM_16;
|
||||
break;
|
||||
case SC_QAM4:
|
||||
case SC_QAM4NR:
|
||||
fe_params->u.ofdm.constellation = QPSK;
|
||||
break;
|
||||
default:
|
||||
fe_params->u.ofdm.constellation = QAM_64;
|
||||
}
|
||||
|
||||
/* transmission mode */
|
||||
fe_params->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
|
||||
|
||||
/* guard interval */
|
||||
fe_params->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
|
||||
|
||||
/* hierarchy */
|
||||
fe_params->u.ofdm.hierarchy_information = HIERARCHY_NONE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static
|
||||
int lgs8gxx_get_tune_settings(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_tune_settings *fesettings)
|
||||
{
|
||||
/* FIXME: copy from tda1004x.c */
|
||||
fesettings->min_delay_ms = 800;
|
||||
fesettings->step_size = 0;
|
||||
fesettings->max_drift = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_status(struct dvb_frontend *fe, fe_status_t *fe_status)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
s8 ret;
|
||||
u8 t;
|
||||
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
ret = lgs8gxx_read_reg(priv, 0x4B, &t);
|
||||
if (ret != 0)
|
||||
return -EIO;
|
||||
|
||||
dprintk("Reg 0x4B: 0x%02X\n", t);
|
||||
|
||||
*fe_status = 0;
|
||||
if (priv->config->prod == LGS8GXX_PROD_LGS8913) {
|
||||
if ((t & 0x40) == 0x40)
|
||||
*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
|
||||
if ((t & 0x80) == 0x80)
|
||||
*fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC |
|
||||
FE_HAS_LOCK;
|
||||
} else {
|
||||
if ((t & 0x80) == 0x80)
|
||||
*fe_status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
|
||||
FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
|
||||
}
|
||||
|
||||
/* success */
|
||||
dprintk("%s: fe_status=0x%x\n", __func__, *fe_status);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_signal_agc(struct lgs8gxx_state *priv, u16 *signal)
|
||||
{
|
||||
u16 v;
|
||||
u8 agc_lvl[2], cat;
|
||||
|
||||
dprintk("%s()\n", __func__);
|
||||
lgs8gxx_read_reg(priv, 0x3F, &agc_lvl[0]);
|
||||
lgs8gxx_read_reg(priv, 0x3E, &agc_lvl[1]);
|
||||
|
||||
v = agc_lvl[0];
|
||||
v <<= 8;
|
||||
v |= agc_lvl[1];
|
||||
|
||||
dprintk("agc_lvl: 0x%04X\n", v);
|
||||
|
||||
if (v < 0x100)
|
||||
cat = 0;
|
||||
else if (v < 0x190)
|
||||
cat = 5;
|
||||
else if (v < 0x2A8)
|
||||
cat = 4;
|
||||
else if (v < 0x381)
|
||||
cat = 3;
|
||||
else if (v < 0x400)
|
||||
cat = 2;
|
||||
else if (v == 0x400)
|
||||
cat = 1;
|
||||
else
|
||||
cat = 0;
|
||||
|
||||
*signal = cat;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8913_read_signal_strength(struct lgs8gxx_state *priv, u16 *signal)
|
||||
{
|
||||
u8 t; s8 ret;
|
||||
s16 max_strength = 0;
|
||||
u8 str;
|
||||
u16 i, gi = priv->curr_gi;
|
||||
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
ret = lgs8gxx_read_reg(priv, 0x4B, &t);
|
||||
if (ret != 0)
|
||||
return -EIO;
|
||||
|
||||
if (fake_signal_str) {
|
||||
if ((t & 0xC0) == 0xC0) {
|
||||
dprintk("Fake signal strength as 50\n");
|
||||
*signal = 0x32;
|
||||
} else
|
||||
*signal = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
dprintk("gi = %d\n", gi);
|
||||
for (i = 0; i < gi; i++) {
|
||||
|
||||
if ((i & 0xFF) == 0)
|
||||
lgs8gxx_write_reg(priv, 0x84, 0x03 & (i >> 8));
|
||||
lgs8gxx_write_reg(priv, 0x83, i & 0xFF);
|
||||
|
||||
lgs8gxx_read_reg(priv, 0x94, &str);
|
||||
if (max_strength < str)
|
||||
max_strength = str;
|
||||
}
|
||||
|
||||
*signal = max_strength;
|
||||
dprintk("%s: signal=0x%02X\n", __func__, *signal);
|
||||
|
||||
lgs8gxx_read_reg(priv, 0x95, &t);
|
||||
dprintk("%s: AVG Noise=0x%02X\n", __func__, t);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_signal_strength(struct dvb_frontend *fe, u16 *signal)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
|
||||
if (priv->config->prod == LGS8GXX_PROD_LGS8913)
|
||||
return lgs8913_read_signal_strength(priv, signal);
|
||||
else
|
||||
return lgs8gxx_read_signal_agc(priv, signal);
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_snr(struct dvb_frontend *fe, u16 *snr)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
u8 t;
|
||||
*snr = 0;
|
||||
|
||||
lgs8gxx_read_reg(priv, 0x95, &t);
|
||||
dprintk("AVG Noise=0x%02X\n", t);
|
||||
*snr = 256 - t;
|
||||
*snr <<= 8;
|
||||
dprintk("snr=0x%x\n", *snr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
|
||||
{
|
||||
*ucblocks = 0;
|
||||
dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_read_ber(struct dvb_frontend *fe, u32 *ber)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
u8 r0, r1, r2, r3;
|
||||
u32 total_cnt, err_cnt;
|
||||
|
||||
dprintk("%s\n", __func__);
|
||||
|
||||
lgs8gxx_write_reg(priv, 0xc6, 0x01);
|
||||
lgs8gxx_write_reg(priv, 0xc6, 0x41);
|
||||
lgs8gxx_write_reg(priv, 0xc6, 0x01);
|
||||
|
||||
msleep(200);
|
||||
|
||||
lgs8gxx_write_reg(priv, 0xc6, 0x81);
|
||||
lgs8gxx_read_reg(priv, 0xd0, &r0);
|
||||
lgs8gxx_read_reg(priv, 0xd1, &r1);
|
||||
lgs8gxx_read_reg(priv, 0xd2, &r2);
|
||||
lgs8gxx_read_reg(priv, 0xd3, &r3);
|
||||
total_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
|
||||
lgs8gxx_read_reg(priv, 0xd4, &r0);
|
||||
lgs8gxx_read_reg(priv, 0xd5, &r1);
|
||||
lgs8gxx_read_reg(priv, 0xd6, &r2);
|
||||
lgs8gxx_read_reg(priv, 0xd7, &r3);
|
||||
err_cnt = (r3 << 24) | (r2 << 16) | (r1 << 8) | (r0);
|
||||
dprintk("error=%d total=%d\n", err_cnt, total_cnt);
|
||||
|
||||
if (total_cnt == 0)
|
||||
*ber = 0;
|
||||
else
|
||||
*ber = err_cnt * 100 / total_cnt;
|
||||
|
||||
dprintk("%s: ber=0x%x\n", __func__, *ber);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lgs8gxx_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
|
||||
{
|
||||
struct lgs8gxx_state *priv = fe->demodulator_priv;
|
||||
|
||||
if (priv->config->tuner_address == 0)
|
||||
return 0;
|
||||
if (enable) {
|
||||
u8 v = 0x80 | priv->config->tuner_address;
|
||||
return lgs8gxx_write_reg(priv, 0x01, v);
|
||||
}
|
||||
return lgs8gxx_write_reg(priv, 0x01, 0);
|
||||
}
|
||||
|
||||
static struct dvb_frontend_ops lgs8gxx_ops = {
|
||||
.info = {
|
||||
.name = "Legend Silicon LGS8913/LGS8GXX DMB-TH",
|
||||
.type = FE_OFDM,
|
||||
.frequency_min = 474000000,
|
||||
.frequency_max = 858000000,
|
||||
.frequency_stepsize = 10000,
|
||||
.caps =
|
||||
FE_CAN_FEC_AUTO |
|
||||
FE_CAN_QAM_AUTO |
|
||||
FE_CAN_TRANSMISSION_MODE_AUTO |
|
||||
FE_CAN_GUARD_INTERVAL_AUTO
|
||||
},
|
||||
|
||||
.release = lgs8gxx_release,
|
||||
|
||||
.init = lgs8gxx_init,
|
||||
.write = lgs8gxx_write,
|
||||
.i2c_gate_ctrl = lgs8gxx_i2c_gate_ctrl,
|
||||
|
||||
.set_frontend = lgs8gxx_set_fe,
|
||||
.get_frontend = lgs8gxx_get_fe,
|
||||
.get_tune_settings = lgs8gxx_get_tune_settings,
|
||||
|
||||
.read_status = lgs8gxx_read_status,
|
||||
.read_ber = lgs8gxx_read_ber,
|
||||
.read_signal_strength = lgs8gxx_read_signal_strength,
|
||||
.read_snr = lgs8gxx_read_snr,
|
||||
.read_ucblocks = lgs8gxx_read_ucblocks,
|
||||
};
|
||||
|
||||
struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
|
||||
struct i2c_adapter *i2c)
|
||||
{
|
||||
struct lgs8gxx_state *priv = NULL;
|
||||
u8 data = 0;
|
||||
|
||||
dprintk("%s()\n", __func__);
|
||||
|
||||
if (config == NULL || i2c == NULL)
|
||||
return NULL;
|
||||
|
||||
priv = kzalloc(sizeof(struct lgs8gxx_state), GFP_KERNEL);
|
||||
if (priv == NULL)
|
||||
goto error_out;
|
||||
|
||||
priv->config = config;
|
||||
priv->i2c = i2c;
|
||||
|
||||
/* check if the demod is there */
|
||||
if (lgs8gxx_read_reg(priv, 0, &data) != 0) {
|
||||
dprintk("%s lgs8gxx not found at i2c addr 0x%02X\n",
|
||||
__func__, priv->config->demod_address);
|
||||
goto error_out;
|
||||
}
|
||||
|
||||
lgs8gxx_read_reg(priv, 1, &data);
|
||||
|
||||
memcpy(&priv->frontend.ops, &lgs8gxx_ops,
|
||||
sizeof(struct dvb_frontend_ops));
|
||||
priv->frontend.demodulator_priv = priv;
|
||||
|
||||
return &priv->frontend;
|
||||
|
||||
error_out:
|
||||
dprintk("%s() error_out\n", __func__);
|
||||
kfree(priv);
|
||||
return NULL;
|
||||
|
||||
}
|
||||
EXPORT_SYMBOL(lgs8gxx_attach);
|
||||
|
||||
MODULE_DESCRIPTION("Legend Silicon LGS8913/LGS8GXX DMB-TH demodulator driver");
|
||||
MODULE_AUTHOR("David T. L. Wong <davidtlwong@gmail.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
90
drivers/media/dvb/frontends/lgs8gxx.h
Normal file
90
drivers/media/dvb/frontends/lgs8gxx.h
Normal file
@ -0,0 +1,90 @@
|
||||
/*
|
||||
* Support for Legend Silicon DMB-TH demodulator
|
||||
* LGS8913, LGS8GL5
|
||||
* experimental support LGS8G42, LGS8G52
|
||||
*
|
||||
* Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
|
||||
* Copyright (C) 2008 Sirius International (Hong Kong) Limited
|
||||
* Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __LGS8GXX_H__
|
||||
#define __LGS8GXX_H__
|
||||
|
||||
#include <linux/dvb/frontend.h>
|
||||
#include <linux/i2c.h>
|
||||
|
||||
#define LGS8GXX_PROD_LGS8913 0
|
||||
#define LGS8GXX_PROD_LGS8GL5 1
|
||||
#define LGS8GXX_PROD_LGS8G42 3
|
||||
#define LGS8GXX_PROD_LGS8G52 4
|
||||
#define LGS8GXX_PROD_LGS8G54 5
|
||||
|
||||
struct lgs8gxx_config {
|
||||
|
||||
/* product type */
|
||||
u8 prod;
|
||||
|
||||
/* the demodulator's i2c address */
|
||||
u8 demod_address;
|
||||
|
||||
/* parallel or serial transport stream */
|
||||
u8 serial_ts;
|
||||
|
||||
/* transport stream polarity*/
|
||||
u8 ts_clk_pol;
|
||||
|
||||
/* transport stream clock gated by ts_valid */
|
||||
u8 ts_clk_gated;
|
||||
|
||||
/* A/D Clock frequency */
|
||||
u32 if_clk_freq; /* in kHz */
|
||||
|
||||
/* IF frequency */
|
||||
u32 if_freq; /* in kHz */
|
||||
|
||||
/*Use External ADC*/
|
||||
u8 ext_adc;
|
||||
|
||||
/*External ADC output two's complement*/
|
||||
u8 adc_signed;
|
||||
|
||||
/*Sample IF data at falling edge of IF_CLK*/
|
||||
u8 if_neg_edge;
|
||||
|
||||
/*IF use Negative center frequency*/
|
||||
u8 if_neg_center;
|
||||
|
||||
/* slave address and configuration of the tuner */
|
||||
u8 tuner_address;
|
||||
};
|
||||
|
||||
#if defined(CONFIG_DVB_LGS8GXX) || \
|
||||
(defined(CONFIG_DVB_LGS8GXX_MODULE) && defined(MODULE))
|
||||
extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
|
||||
struct i2c_adapter *i2c);
|
||||
#else
|
||||
static inline
|
||||
struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
|
||||
struct i2c_adapter *i2c) {
|
||||
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
|
||||
return NULL;
|
||||
}
|
||||
#endif /* CONFIG_DVB_LGS8GXX */
|
||||
|
||||
#endif /* __LGS8GXX_H__ */
|
||||
70
drivers/media/dvb/frontends/lgs8gxx_priv.h
Normal file
70
drivers/media/dvb/frontends/lgs8gxx_priv.h
Normal file
@ -0,0 +1,70 @@
|
||||
/*
|
||||
* Support for Legend Silicon DMB-TH demodulator
|
||||
* LGS8913, LGS8GL5
|
||||
* experimental support LGS8G42, LGS8G52
|
||||
*
|
||||
* Copyright (C) 2007,2008 David T.L. Wong <davidtlwong@gmail.com>
|
||||
* Copyright (C) 2008 Sirius International (Hong Kong) Limited
|
||||
* Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef LGS8913_PRIV_H
|
||||
#define LGS8913_PRIV_H
|
||||
|
||||
struct lgs8gxx_state {
|
||||
struct i2c_adapter *i2c;
|
||||
/* configuration settings */
|
||||
const struct lgs8gxx_config *config;
|
||||
struct dvb_frontend frontend;
|
||||
u16 curr_gi; /* current guard interval */
|
||||
};
|
||||
|
||||
#define SC_MASK 0x1C /* Sub-Carrier Modulation Mask */
|
||||
#define SC_QAM64 0x10 /* 64QAM modulation */
|
||||
#define SC_QAM32 0x0C /* 32QAM modulation */
|
||||
#define SC_QAM16 0x08 /* 16QAM modulation */
|
||||
#define SC_QAM4NR 0x04 /* 4QAM modulation */
|
||||
#define SC_QAM4 0x00 /* 4QAM modulation */
|
||||
|
||||
#define LGS_FEC_MASK 0x03 /* FEC Rate Mask */
|
||||
#define LGS_FEC_0_4 0x00 /* FEC Rate 0.4 */
|
||||
#define LGS_FEC_0_6 0x01 /* FEC Rate 0.6 */
|
||||
#define LGS_FEC_0_8 0x02 /* FEC Rate 0.8 */
|
||||
|
||||
#define TIM_MASK 0x20 /* Time Interleave Length Mask */
|
||||
#define TIM_LONG 0x00 /* Time Interleave Length = 720 */
|
||||
#define TIM_MIDDLE 0x20 /* Time Interleave Length = 240 */
|
||||
|
||||
#define CF_MASK 0x80 /* Control Frame Mask */
|
||||
#define CF_EN 0x80 /* Control Frame On */
|
||||
|
||||
#define GI_MASK 0x03 /* Guard Interval Mask */
|
||||
#define GI_420 0x00 /* 1/9 Guard Interval */
|
||||
#define GI_595 0x01 /* */
|
||||
#define GI_945 0x02 /* 1/4 Guard Interval */
|
||||
|
||||
|
||||
#define TS_PARALLEL 0x00 /* Parallel TS Output a.k.a. SPI */
|
||||
#define TS_SERIAL 0x01 /* Serial TS Output a.k.a. SSI */
|
||||
#define TS_CLK_NORMAL 0x00 /* MPEG Clock Normal */
|
||||
#define TS_CLK_INVERTED 0x02 /* MPEG Clock Inverted */
|
||||
#define TS_CLK_GATED 0x00 /* MPEG clock gated */
|
||||
#define TS_CLK_FREERUN 0x04 /* MPEG clock free running*/
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user