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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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61ca1500c5
This patch fixes the warning "Using plain integer as NULL pointer", generated by sparse, by replacing if (var == 0) with if (!var) after an allocation and all other offending 0s with NULL. KernelVersion: linus' tree-1f0324c Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
555 lines
15 KiB
C
555 lines
15 KiB
C
/*
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* Driver for the NXP SAA7164 PCIe bridge
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*
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* Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
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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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*
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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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#include "saa7164.h"
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#include "tda10048.h"
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#include "tda18271.h"
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#include "s5h1411.h"
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#define DRIVER_NAME "saa7164"
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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/* addr is in the card struct, get it from there */
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static struct tda10048_config hauppauge_hvr2200_1_config = {
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.demod_address = 0x10 >> 1,
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.output_mode = TDA10048_SERIAL_OUTPUT,
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.fwbulkwritelen = TDA10048_BULKWRITE_200,
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.inversion = TDA10048_INVERSION_ON,
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.dtv6_if_freq_khz = TDA10048_IF_3300,
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.dtv7_if_freq_khz = TDA10048_IF_3500,
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.dtv8_if_freq_khz = TDA10048_IF_4000,
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.clk_freq_khz = TDA10048_CLK_16000,
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};
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static struct tda10048_config hauppauge_hvr2200_2_config = {
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.demod_address = 0x12 >> 1,
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.output_mode = TDA10048_SERIAL_OUTPUT,
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.fwbulkwritelen = TDA10048_BULKWRITE_200,
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.inversion = TDA10048_INVERSION_ON,
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.dtv6_if_freq_khz = TDA10048_IF_3300,
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.dtv7_if_freq_khz = TDA10048_IF_3500,
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.dtv8_if_freq_khz = TDA10048_IF_4000,
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.clk_freq_khz = TDA10048_CLK_16000,
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};
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static struct tda18271_std_map hauppauge_tda18271_std_map = {
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.atsc_6 = { .if_freq = 3250, .agc_mode = 3, .std = 3,
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.if_lvl = 6, .rfagc_top = 0x37 },
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.qam_6 = { .if_freq = 4000, .agc_mode = 3, .std = 0,
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.if_lvl = 6, .rfagc_top = 0x37 },
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};
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static struct tda18271_config hauppauge_hvr22x0_tuner_config = {
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.std_map = &hauppauge_tda18271_std_map,
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.gate = TDA18271_GATE_ANALOG,
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.role = TDA18271_MASTER,
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};
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static struct tda18271_config hauppauge_hvr22x0s_tuner_config = {
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.std_map = &hauppauge_tda18271_std_map,
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.gate = TDA18271_GATE_ANALOG,
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.role = TDA18271_SLAVE,
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.output_opt = TDA18271_OUTPUT_LT_OFF,
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.rf_cal_on_startup = 1
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};
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static struct s5h1411_config hauppauge_s5h1411_config = {
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.output_mode = S5H1411_SERIAL_OUTPUT,
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.gpio = S5H1411_GPIO_ON,
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.qam_if = S5H1411_IF_4000,
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.vsb_if = S5H1411_IF_3250,
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.inversion = S5H1411_INVERSION_ON,
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.status_mode = S5H1411_DEMODLOCKING,
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.mpeg_timing = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
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};
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static int saa7164_dvb_stop_port(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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int ret;
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
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__func__, ret);
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ret = -EIO;
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} else {
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dprintk(DBGLVL_DVB, "%s() Stopped\n", __func__);
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ret = 0;
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}
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return ret;
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}
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static int saa7164_dvb_acquire_port(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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int ret;
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
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__func__, ret);
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ret = -EIO;
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} else {
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dprintk(DBGLVL_DVB, "%s() Acquired\n", __func__);
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ret = 0;
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}
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return ret;
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}
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static int saa7164_dvb_pause_port(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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int ret;
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ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
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if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
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__func__, ret);
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ret = -EIO;
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} else {
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dprintk(DBGLVL_DVB, "%s() Paused\n", __func__);
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ret = 0;
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}
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return ret;
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}
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/* Firmware is very windows centric, meaning you have to transition
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* the part through AVStream / KS Windows stages, forwards or backwards.
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* States are: stopped, acquired (h/w), paused, started.
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*/
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static int saa7164_dvb_stop_streaming(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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struct saa7164_buffer *buf;
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struct list_head *p, *q;
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int ret;
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dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
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ret = saa7164_dvb_pause_port(port);
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ret = saa7164_dvb_acquire_port(port);
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ret = saa7164_dvb_stop_port(port);
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/* Mark the hardware buffers as free */
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mutex_lock(&port->dmaqueue_lock);
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list_for_each_safe(p, q, &port->dmaqueue.list) {
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buf = list_entry(p, struct saa7164_buffer, list);
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buf->flags = SAA7164_BUFFER_FREE;
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}
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mutex_unlock(&port->dmaqueue_lock);
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return ret;
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}
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static int saa7164_dvb_start_port(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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int ret = 0, result;
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dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
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saa7164_buffer_cfg_port(port);
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/* Acquire the hardware */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
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__func__, result);
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/* Stop the hardware, regardless */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() acquire/forced stop transition "
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"failed, res = 0x%x\n", __func__, result);
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}
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ret = -EIO;
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goto out;
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} else
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dprintk(DBGLVL_DVB, "%s() Acquired\n", __func__);
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/* Pause the hardware */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
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__func__, result);
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/* Stop the hardware, regardless */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() pause/forced stop transition "
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"failed, res = 0x%x\n", __func__, result);
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}
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ret = -EIO;
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goto out;
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} else
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dprintk(DBGLVL_DVB, "%s() Paused\n", __func__);
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/* Start the hardware */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
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__func__, result);
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/* Stop the hardware, regardless */
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result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
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if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
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printk(KERN_ERR "%s() run/forced stop transition "
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"failed, res = 0x%x\n", __func__, result);
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}
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ret = -EIO;
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} else
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dprintk(DBGLVL_DVB, "%s() Running\n", __func__);
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out:
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return ret;
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}
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static int saa7164_dvb_start_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct saa7164_port *port = (struct saa7164_port *) demux->priv;
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struct saa7164_dvb *dvb = &port->dvb;
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struct saa7164_dev *dev = port->dev;
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int ret = 0;
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dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
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if (!demux->dmx.frontend)
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return -EINVAL;
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if (dvb) {
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mutex_lock(&dvb->lock);
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if (dvb->feeding++ == 0) {
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/* Start transport */
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ret = saa7164_dvb_start_port(port);
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}
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mutex_unlock(&dvb->lock);
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dprintk(DBGLVL_DVB, "%s(port=%d) now feeding = %d\n",
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__func__, port->nr, dvb->feeding);
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}
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return ret;
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}
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static int saa7164_dvb_stop_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct saa7164_port *port = (struct saa7164_port *) demux->priv;
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struct saa7164_dvb *dvb = &port->dvb;
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struct saa7164_dev *dev = port->dev;
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int ret = 0;
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dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
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if (dvb) {
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mutex_lock(&dvb->lock);
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if (--dvb->feeding == 0) {
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/* Stop transport */
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ret = saa7164_dvb_stop_streaming(port);
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}
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mutex_unlock(&dvb->lock);
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dprintk(DBGLVL_DVB, "%s(port=%d) now feeding = %d\n",
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__func__, port->nr, dvb->feeding);
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}
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return ret;
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}
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static int dvb_register(struct saa7164_port *port)
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{
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struct saa7164_dvb *dvb = &port->dvb;
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struct saa7164_dev *dev = port->dev;
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struct saa7164_buffer *buf;
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int result, i;
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dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
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if (port->type != SAA7164_MPEG_DVB)
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BUG();
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/* Sanity check that the PCI configuration space is active */
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if (port->hwcfg.BARLocation == 0) {
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result = -ENOMEM;
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printk(KERN_ERR "%s: dvb_register_adapter failed "
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"(errno = %d), NO PCI configuration\n",
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DRIVER_NAME, result);
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goto fail_adapter;
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}
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/* Init and establish defaults */
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port->hw_streamingparams.bitspersample = 8;
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port->hw_streamingparams.samplesperline = 188;
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port->hw_streamingparams.numberoflines =
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(SAA7164_TS_NUMBER_OF_LINES * 188) / 188;
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port->hw_streamingparams.pitch = 188;
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port->hw_streamingparams.linethreshold = 0;
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port->hw_streamingparams.pagetablelistvirt = NULL;
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port->hw_streamingparams.pagetablelistphys = NULL;
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port->hw_streamingparams.numpagetables = 2 +
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((SAA7164_TS_NUMBER_OF_LINES * 188) / PAGE_SIZE);
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port->hw_streamingparams.numpagetableentries = port->hwcfg.buffercount;
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/* Allocate the PCI resources */
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for (i = 0; i < port->hwcfg.buffercount; i++) {
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buf = saa7164_buffer_alloc(port,
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port->hw_streamingparams.numberoflines *
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port->hw_streamingparams.pitch);
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if (!buf) {
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result = -ENOMEM;
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printk(KERN_ERR "%s: dvb_register_adapter failed "
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"(errno = %d), unable to allocate buffers\n",
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DRIVER_NAME, result);
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goto fail_adapter;
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}
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mutex_lock(&port->dmaqueue_lock);
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list_add_tail(&buf->list, &port->dmaqueue.list);
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mutex_unlock(&port->dmaqueue_lock);
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}
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/* register adapter */
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result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
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&dev->pci->dev, adapter_nr);
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if (result < 0) {
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printk(KERN_ERR "%s: dvb_register_adapter failed "
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"(errno = %d)\n", DRIVER_NAME, result);
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goto fail_adapter;
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}
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dvb->adapter.priv = port;
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/* register frontend */
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result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
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if (result < 0) {
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printk(KERN_ERR "%s: dvb_register_frontend failed "
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"(errno = %d)\n", DRIVER_NAME, result);
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goto fail_frontend;
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}
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/* register demux stuff */
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dvb->demux.dmx.capabilities =
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DMX_TS_FILTERING | DMX_SECTION_FILTERING |
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DMX_MEMORY_BASED_FILTERING;
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dvb->demux.priv = port;
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dvb->demux.filternum = 256;
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dvb->demux.feednum = 256;
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dvb->demux.start_feed = saa7164_dvb_start_feed;
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dvb->demux.stop_feed = saa7164_dvb_stop_feed;
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result = dvb_dmx_init(&dvb->demux);
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if (result < 0) {
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printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
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DRIVER_NAME, result);
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goto fail_dmx;
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}
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dvb->dmxdev.filternum = 256;
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dvb->dmxdev.demux = &dvb->demux.dmx;
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dvb->dmxdev.capabilities = 0;
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result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
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if (result < 0) {
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printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
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DRIVER_NAME, result);
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goto fail_dmxdev;
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}
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dvb->fe_hw.source = DMX_FRONTEND_0;
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result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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if (result < 0) {
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printk(KERN_ERR "%s: add_frontend failed "
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"(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
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goto fail_fe_hw;
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}
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dvb->fe_mem.source = DMX_MEMORY_FE;
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result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
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if (result < 0) {
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printk(KERN_ERR "%s: add_frontend failed "
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"(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
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goto fail_fe_mem;
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}
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result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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if (result < 0) {
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printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
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DRIVER_NAME, result);
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goto fail_fe_conn;
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}
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/* register network adapter */
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dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
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return 0;
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fail_fe_conn:
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
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fail_fe_mem:
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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fail_fe_hw:
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dvb_dmxdev_release(&dvb->dmxdev);
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fail_dmxdev:
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dvb_dmx_release(&dvb->demux);
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fail_dmx:
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dvb_unregister_frontend(dvb->frontend);
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fail_frontend:
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dvb_frontend_detach(dvb->frontend);
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dvb_unregister_adapter(&dvb->adapter);
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fail_adapter:
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return result;
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}
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int saa7164_dvb_unregister(struct saa7164_port *port)
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{
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struct saa7164_dvb *dvb = &port->dvb;
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struct saa7164_dev *dev = port->dev;
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struct saa7164_buffer *b;
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struct list_head *c, *n;
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dprintk(DBGLVL_DVB, "%s()\n", __func__);
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if (port->type != SAA7164_MPEG_DVB)
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BUG();
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/* Remove any allocated buffers */
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mutex_lock(&port->dmaqueue_lock);
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list_for_each_safe(c, n, &port->dmaqueue.list) {
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b = list_entry(c, struct saa7164_buffer, list);
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list_del(c);
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saa7164_buffer_dealloc(b);
|
|
}
|
|
mutex_unlock(&port->dmaqueue_lock);
|
|
|
|
if (dvb->frontend == NULL)
|
|
return 0;
|
|
|
|
dvb_net_release(&dvb->net);
|
|
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
|
|
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
|
|
dvb_dmxdev_release(&dvb->dmxdev);
|
|
dvb_dmx_release(&dvb->demux);
|
|
dvb_unregister_frontend(dvb->frontend);
|
|
dvb_frontend_detach(dvb->frontend);
|
|
dvb_unregister_adapter(&dvb->adapter);
|
|
return 0;
|
|
}
|
|
|
|
/* All the DVB attach calls go here, this function get's modified
|
|
* for each new card.
|
|
*/
|
|
int saa7164_dvb_register(struct saa7164_port *port)
|
|
{
|
|
struct saa7164_dev *dev = port->dev;
|
|
struct saa7164_dvb *dvb = &port->dvb;
|
|
struct saa7164_i2c *i2c_bus = NULL;
|
|
int ret;
|
|
|
|
dprintk(DBGLVL_DVB, "%s()\n", __func__);
|
|
|
|
/* init frontend */
|
|
switch (dev->board) {
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2200:
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2200_2:
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2200_3:
|
|
i2c_bus = &dev->i2c_bus[port->nr + 1];
|
|
switch (port->nr) {
|
|
case 0:
|
|
port->dvb.frontend = dvb_attach(tda10048_attach,
|
|
&hauppauge_hvr2200_1_config,
|
|
&i2c_bus->i2c_adap);
|
|
|
|
if (port->dvb.frontend != NULL) {
|
|
/* TODO: addr is in the card struct */
|
|
dvb_attach(tda18271_attach, port->dvb.frontend,
|
|
0xc0 >> 1, &i2c_bus->i2c_adap,
|
|
&hauppauge_hvr22x0_tuner_config);
|
|
}
|
|
|
|
break;
|
|
case 1:
|
|
port->dvb.frontend = dvb_attach(tda10048_attach,
|
|
&hauppauge_hvr2200_2_config,
|
|
&i2c_bus->i2c_adap);
|
|
|
|
if (port->dvb.frontend != NULL) {
|
|
/* TODO: addr is in the card struct */
|
|
dvb_attach(tda18271_attach, port->dvb.frontend,
|
|
0xc0 >> 1, &i2c_bus->i2c_adap,
|
|
&hauppauge_hvr22x0s_tuner_config);
|
|
}
|
|
|
|
break;
|
|
}
|
|
break;
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2250:
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2250_2:
|
|
case SAA7164_BOARD_HAUPPAUGE_HVR2250_3:
|
|
i2c_bus = &dev->i2c_bus[port->nr + 1];
|
|
|
|
port->dvb.frontend = dvb_attach(s5h1411_attach,
|
|
&hauppauge_s5h1411_config,
|
|
&i2c_bus->i2c_adap);
|
|
|
|
if (port->dvb.frontend != NULL) {
|
|
if (port->nr == 0) {
|
|
/* Master TDA18271 */
|
|
/* TODO: addr is in the card struct */
|
|
dvb_attach(tda18271_attach, port->dvb.frontend,
|
|
0xc0 >> 1, &i2c_bus->i2c_adap,
|
|
&hauppauge_hvr22x0_tuner_config);
|
|
} else {
|
|
/* Slave TDA18271 */
|
|
dvb_attach(tda18271_attach, port->dvb.frontend,
|
|
0xc0 >> 1, &i2c_bus->i2c_adap,
|
|
&hauppauge_hvr22x0s_tuner_config);
|
|
}
|
|
}
|
|
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s: The frontend isn't supported\n",
|
|
dev->name);
|
|
break;
|
|
}
|
|
if (NULL == dvb->frontend) {
|
|
printk(KERN_ERR "%s() Frontend initialization failed\n",
|
|
__func__);
|
|
return -1;
|
|
}
|
|
|
|
/* register everything */
|
|
ret = dvb_register(port);
|
|
if (ret < 0) {
|
|
if (dvb->frontend->ops.release)
|
|
dvb->frontend->ops.release(dvb->frontend);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|