mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 00:40:03 +00:00
![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
Use codespell to fix lots of typos over frontends. Manually verified to avoid false-positives. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
177 lines
4.2 KiB
C
177 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Earthsoft PT3 driver
|
|
*
|
|
* Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
|
|
*/
|
|
|
|
#ifndef PT3_H
|
|
#define PT3_H
|
|
|
|
#include <linux/atomic.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <media/dvb_demux.h>
|
|
#include <media/dvb_frontend.h>
|
|
#include <media/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 address 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 */
|