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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Earthsoft PT3 driver4 *5 * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>6 */7 8#ifndef PT3_H9#define PT3_H10 11#include <linux/atomic.h>12#include <linux/types.h>13 14#include <media/dvb_demux.h>15#include <media/dvb_frontend.h>16#include <media/dmxdev.h>17 18#include "tc90522.h"19#include "mxl301rf.h"20#include "qm1d1c0042.h"21 22#define DRV_NAME KBUILD_MODNAME23 24#define PT3_NUM_FE 425 26/*27 * register index of the FPGA chip28 */29#define REG_VERSION 0x0030#define REG_BUS 0x0431#define REG_SYSTEM_W 0x0832#define REG_SYSTEM_R 0x0c33#define REG_I2C_W 0x1034#define REG_I2C_R 0x1435#define REG_RAM_W 0x1836#define REG_RAM_R 0x1c37#define REG_DMA_BASE 0x40 /* regs for FE[i] = REG_DMA_BASE + 0x18 * i */38#define OFST_DMA_DESC_L 0x0039#define OFST_DMA_DESC_H 0x0440#define OFST_DMA_CTL 0x0841#define OFST_TS_CTL 0x0c42#define OFST_STATUS 0x1043#define OFST_TS_ERR 0x1444 45/*46 * internal buffer for I2C47 */48#define PT3_I2C_MAX 409149struct pt3_i2cbuf {50 u8 data[PT3_I2C_MAX];51 u8 tmp;52 u32 num_cmds;53};54 55/*56 * DMA things57 */58#define TS_PACKET_SZ 18859/* DMA transfers must not cross 4GiB, so use one page / transfer */60#define DATA_XFER_SZ 409661#define DATA_BUF_XFERS 4762/* (num_bufs * DATA_BUF_SZ) % TS_PACKET_SZ must be 0 */63#define DATA_BUF_SZ (DATA_BUF_XFERS * DATA_XFER_SZ)64#define MAX_DATA_BUFS 1665#define MIN_DATA_BUFS 266 67#define DESCS_IN_PAGE (PAGE_SIZE / sizeof(struct xfer_desc))68#define MAX_NUM_XFERS (MAX_DATA_BUFS * DATA_BUF_XFERS)69#define MAX_DESC_BUFS DIV_ROUND_UP(MAX_NUM_XFERS, DESCS_IN_PAGE)70 71/* DMA transfer description.72 * device is passed a pointer to this struct, dma-reads it,73 * and gets the DMA buffer ring for storing TS data.74 */75struct xfer_desc {76 u32 addr_l; /* bus address of target data buffer */77 u32 addr_h;78 u32 size;79 u32 next_l; /* bus address of the next xfer_desc */80 u32 next_h;81};82 83/* A DMA mapping of a page containing xfer_desc's */84struct xfer_desc_buffer {85 dma_addr_t b_addr;86 struct xfer_desc *descs; /* PAGE_SIZE (xfer_desc[DESCS_IN_PAGE]) */87};88 89/* A DMA mapping of a data buffer */90struct dma_data_buffer {91 dma_addr_t b_addr;92 u8 *data; /* size: u8[PAGE_SIZE] */93};94 95/*96 * device things97 */98struct pt3_adap_config {99 struct i2c_board_info demod_info;100 struct tc90522_config demod_cfg;101 102 struct i2c_board_info tuner_info;103 union tuner_config {104 struct qm1d1c0042_config qm1d1c0042;105 struct mxl301rf_config mxl301rf;106 } tuner_cfg;107 u32 init_freq;108};109 110struct pt3_adapter {111 struct dvb_adapter dvb_adap; /* dvb_adap.priv => struct pt3_board */112 int adap_idx;113 114 struct dvb_demux demux;115 struct dmxdev dmxdev;116 struct dvb_frontend *fe;117 struct i2c_client *i2c_demod;118 struct i2c_client *i2c_tuner;119 120 /* data fetch thread */121 struct task_struct *thread;122 int num_feeds;123 124 bool cur_lna;125 bool cur_lnb; /* current LNB power status (on/off) */126 127 /* items below are for DMA */128 struct dma_data_buffer buffer[MAX_DATA_BUFS];129 int buf_idx;130 int buf_ofs;131 int num_bufs; /* == pt3_board->num_bufs */132 int num_discard; /* how many access units to discard initially */133 134 struct xfer_desc_buffer desc_buf[MAX_DESC_BUFS];135 int num_desc_bufs; /* == num_bufs * DATA_BUF_XFERS / DESCS_IN_PAGE */136};137 138 139struct pt3_board {140 struct pci_dev *pdev;141 void __iomem *regs[2];142 /* regs[0]: registers, regs[1]: internal memory, used for I2C */143 144 struct mutex lock;145 146 /* LNB power shared among sat-FEs */147 int lnb_on_cnt; /* LNB power on count */148 149 /* LNA shared among terr-FEs */150 int lna_on_cnt; /* booster enabled count */151 152 int num_bufs; /* number of DMA buffers allocated/mapped per FE */153 154 struct i2c_adapter i2c_adap;155 struct pt3_i2cbuf *i2c_buf;156 157 struct pt3_adapter *adaps[PT3_NUM_FE];158};159 160 161/*162 * prototypes163 */164extern int pt3_alloc_dmabuf(struct pt3_adapter *adap);165extern void pt3_init_dmabuf(struct pt3_adapter *adap);166extern void pt3_free_dmabuf(struct pt3_adapter *adap);167extern int pt3_start_dma(struct pt3_adapter *adap);168extern int pt3_stop_dma(struct pt3_adapter *adap);169extern int pt3_proc_dma(struct pt3_adapter *adap);170 171extern int pt3_i2c_master_xfer(struct i2c_adapter *adap,172 struct i2c_msg *msgs, int num);173extern u32 pt3_i2c_functionality(struct i2c_adapter *adap);174extern void pt3_i2c_reset(struct pt3_board *pt3);175extern int pt3_init_all_demods(struct pt3_board *pt3);176extern int pt3_init_all_mxl301rf(struct pt3_board *pt3);177#endif /* PT3_H */178