/* * Earthsoft PT3 driver * * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> * * 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 version 2. * * * 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. */ #ifndef PT3_H #define PT3_H #include <linux/atomic.h> #include <linux/types.h> #include "dvb_demux.h" #include "dvb_frontend.h" #include "dmxdev.h" #include "tc90522.h" #include "mxl301rf.h" #include "qm1d1c0042.h" #define DRV_NAME KBUILD_MODNAME #define PT3_NUM_FE 4 /* * register index of the FPGA chip */ #define REG_VERSION 0x00 #define REG_BUS 0x04 #define REG_SYSTEM_W 0x08 #define REG_SYSTEM_R 0x0c #define REG_I2C_W 0x10 #define REG_I2C_R 0x14 #define REG_RAM_W 0x18 #define REG_RAM_R 0x1c #define REG_DMA_BASE 0x40 /* regs for FE[i] = REG_DMA_BASE + 0x18 * i */ #define OFST_DMA_DESC_L 0x00 #define OFST_DMA_DESC_H 0x04 #define OFST_DMA_CTL 0x08 #define OFST_TS_CTL 0x0c #define OFST_STATUS 0x10 #define OFST_TS_ERR 0x14 /* * internal buffer for I2C */ #define PT3_I2C_MAX 4091 struct pt3_i2cbuf { u8 data[PT3_I2C_MAX]; u8 tmp; u32 num_cmds; }; /* * DMA things */ #define TS_PACKET_SZ 188 /* DMA transfers must not cross 4GiB, so use one page / transfer */ #define DATA_XFER_SZ 4096 #define DATA_BUF_XFERS 47 /* (num_bufs * DATA_BUF_SZ) % TS_PACKET_SZ must be 0 */ #define DATA_BUF_SZ (DATA_BUF_XFERS * DATA_XFER_SZ) #define MAX_DATA_BUFS 16 #define MIN_DATA_BUFS 2 #define DESCS_IN_PAGE (PAGE_SIZE / sizeof(struct xfer_desc)) #define MAX_NUM_XFERS (MAX_DATA_BUFS * DATA_BUF_XFERS) #define MAX_DESC_BUFS DIV_ROUND_UP(MAX_NUM_XFERS, DESCS_IN_PAGE) /* DMA transfer description. * device is passed a pointer to this struct, dma-reads it, * and gets the DMA buffer ring for storing TS data. */ struct xfer_desc { u32 addr_l; /* bus address of target data buffer */ u32 addr_h; u32 size; u32 next_l; /* bus adddress of the next xfer_desc */ u32 next_h; }; /* A DMA mapping of a page containing xfer_desc's */ struct xfer_desc_buffer { dma_addr_t b_addr; struct xfer_desc *descs; /* PAGE_SIZE (xfer_desc[DESCS_IN_PAGE]) */ }; /* A DMA mapping of a data buffer */ struct dma_data_buffer { dma_addr_t b_addr; u8 *data; /* size: u8[PAGE_SIZE] */ }; /* * device things */ struct pt3_adap_config { struct i2c_board_info demod_info; struct tc90522_config demod_cfg; struct i2c_board_info tuner_info; union tuner_config { struct qm1d1c0042_config qm1d1c0042; struct mxl301rf_config mxl301rf; } tuner_cfg; u32 init_freq; }; struct pt3_adapter { struct dvb_adapter dvb_adap; /* dvb_adap.priv => struct pt3_board */ int adap_idx; struct dvb_demux demux; struct dmxdev dmxdev; struct dvb_frontend *fe; struct i2c_client *i2c_demod; struct i2c_client *i2c_tuner; /* data fetch thread */ struct task_struct *thread; int num_feeds; bool cur_lna; bool cur_lnb; /* current LNB power status (on/off) */ /* items below are for DMA */ struct dma_data_buffer buffer[MAX_DATA_BUFS]; int buf_idx; int buf_ofs; int num_bufs; /* == pt3_board->num_bufs */ int num_discard; /* how many access units to discard initially */ struct xfer_desc_buffer desc_buf[MAX_DESC_BUFS]; int num_desc_bufs; /* == num_bufs * DATA_BUF_XFERS / DESCS_IN_PAGE */ }; struct pt3_board { struct pci_dev *pdev; void __iomem *regs[2]; /* regs[0]: registers, regs[1]: internal memory, used for I2C */ struct mutex lock; /* LNB power shared among sat-FEs */ int lnb_on_cnt; /* LNB power on count */ /* LNA shared among terr-FEs */ int lna_on_cnt; /* booster enabled count */ int num_bufs; /* number of DMA buffers allocated/mapped per FE */ struct i2c_adapter i2c_adap; struct pt3_i2cbuf *i2c_buf; struct pt3_adapter *adaps[PT3_NUM_FE]; }; /* * prototypes */ extern int pt3_alloc_dmabuf(struct pt3_adapter *adap); extern void pt3_init_dmabuf(struct pt3_adapter *adap); extern void pt3_free_dmabuf(struct pt3_adapter *adap); extern int pt3_start_dma(struct pt3_adapter *adap); extern int pt3_stop_dma(struct pt3_adapter *adap); extern int pt3_proc_dma(struct pt3_adapter *adap); extern int pt3_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num); extern u32 pt3_i2c_functionality(struct i2c_adapter *adap); extern void pt3_i2c_reset(struct pt3_board *pt3); extern int pt3_init_all_demods(struct pt3_board *pt3); extern int pt3_init_all_mxl301rf(struct pt3_board *pt3); #endif /* PT3_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Akihiro Tsukada | 510 | 100.00% | 1 | 100.00% |
| Total | 510 | 100.00% | 1 | 100.00% |