linux/drivers/media/pci/mantis/mantis_core.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3        Mantis PCI bridge driver
   4
   5        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   6
   7*/
   8
   9#include "mantis_common.h"
  10#include "mantis_core.h"
  11#include "mantis_vp1033.h"
  12#include "mantis_vp1034.h"
  13#include "mantis_vp1041.h"
  14#include "mantis_vp2033.h"
  15#include "mantis_vp2040.h"
  16#include "mantis_vp3030.h"
  17
  18static int read_eeprom_byte(struct mantis_pci *mantis, u8 *data, u8 length)
  19{
  20        int err;
  21        struct i2c_msg msg[] = {
  22                {
  23                        .addr = 0x50,
  24                        .flags = 0,
  25                        .buf = data,
  26                        .len = 1
  27                }, {
  28                        .addr = 0x50,
  29                        .flags = I2C_M_RD,
  30                        .buf = data,
  31                        .len = length
  32                },
  33        };
  34
  35        err = i2c_transfer(&mantis->adapter, msg, 2);
  36        if (err < 0) {
  37                dprintk(verbose, MANTIS_ERROR, 1,
  38                        "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
  39                        err, data[0], data[1]);
  40
  41                return err;
  42        }
  43
  44        return 0;
  45}
  46
  47static int get_mac_address(struct mantis_pci *mantis)
  48{
  49        int err;
  50
  51        mantis->mac_address[0] = 0x08;
  52        err = read_eeprom_byte(mantis, &mantis->mac_address[0], 6);
  53        if (err < 0) {
  54                dprintk(verbose, MANTIS_ERROR, 1, "Mantis EEPROM read error");
  55
  56                return err;
  57        }
  58        dprintk(verbose, MANTIS_ERROR, 0,
  59                "    MAC Address=[%pM]\n", mantis->mac_address);
  60
  61        return 0;
  62}
  63
  64#define MANTIS_MODEL_UNKNOWN    "UNKNOWN"
  65#define MANTIS_DEV_UNKNOWN      "UNKNOWN"
  66
  67struct mantis_hwconfig unknown_device = {
  68        .model_name     = MANTIS_MODEL_UNKNOWN,
  69        .dev_type       = MANTIS_DEV_UNKNOWN,
  70};
  71
  72static void mantis_load_config(struct mantis_pci *mantis)
  73{
  74        switch (mantis->subsystem_device) {
  75        case MANTIS_VP_1033_DVB_S:      /* VP-1033 */
  76                mantis->hwconfig = &vp1033_mantis_config;
  77                break;
  78        case MANTIS_VP_1034_DVB_S:      /* VP-1034 */
  79                mantis->hwconfig = &vp1034_mantis_config;
  80                break;
  81        case MANTIS_VP_1041_DVB_S2:     /* VP-1041 */
  82        case TECHNISAT_SKYSTAR_HD2:
  83                mantis->hwconfig = &vp1041_mantis_config;
  84                break;
  85        case MANTIS_VP_2033_DVB_C:      /* VP-2033 */
  86                mantis->hwconfig = &vp2033_mantis_config;
  87                break;
  88        case MANTIS_VP_2040_DVB_C:      /* VP-2040 */
  89        case CINERGY_C: /* VP-2040 clone */
  90        case TECHNISAT_CABLESTAR_HD2:
  91                mantis->hwconfig = &vp2040_mantis_config;
  92                break;
  93        case MANTIS_VP_3030_DVB_T:      /* VP-3030 */
  94                mantis->hwconfig = &vp3030_mantis_config;
  95                break;
  96        default:
  97                mantis->hwconfig = &unknown_device;
  98                break;
  99        }
 100}
 101
 102int mantis_core_init(struct mantis_pci *mantis)
 103{
 104        int err = 0;
 105
 106        mantis_load_config(mantis);
 107        dprintk(verbose, MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
 108                mantis->hwconfig->model_name, mantis->hwconfig->dev_type,
 109                mantis->pdev->bus->number, PCI_SLOT(mantis->pdev->devfn), PCI_FUNC(mantis->pdev->devfn));
 110        dprintk(verbose, MANTIS_ERROR, 0, "    Mantis Rev %d [%04x:%04x], ",
 111                mantis->revision,
 112                mantis->subsystem_vendor, mantis->subsystem_device);
 113        dprintk(verbose, MANTIS_ERROR, 0,
 114                "irq: %d, latency: %d\n    memory: 0x%lx, mmio: 0x%p\n",
 115                mantis->pdev->irq, mantis->latency,
 116                mantis->mantis_addr, mantis->mantis_mmio);
 117
 118        err = mantis_i2c_init(mantis);
 119        if (err < 0) {
 120                dprintk(verbose, MANTIS_ERROR, 1, "Mantis I2C init failed");
 121                return err;
 122        }
 123        err = get_mac_address(mantis);
 124        if (err < 0) {
 125                dprintk(verbose, MANTIS_ERROR, 1, "get MAC address failed");
 126                return err;
 127        }
 128        err = mantis_dma_init(mantis);
 129        if (err < 0) {
 130                dprintk(verbose, MANTIS_ERROR, 1, "Mantis DMA init failed");
 131                return err;
 132        }
 133        err = mantis_dvb_init(mantis);
 134        if (err < 0) {
 135                dprintk(verbose, MANTIS_DEBUG, 1, "Mantis DVB init failed");
 136                return err;
 137        }
 138        err = mantis_uart_init(mantis);
 139        if (err < 0) {
 140                dprintk(verbose, MANTIS_DEBUG, 1, "Mantis UART init failed");
 141                return err;
 142        }
 143
 144        return 0;
 145}
 146
 147int mantis_core_exit(struct mantis_pci *mantis)
 148{
 149        mantis_dma_stop(mantis);
 150        dprintk(verbose, MANTIS_ERROR, 1, "DMA engine stopping");
 151
 152        mantis_uart_exit(mantis);
 153        dprintk(verbose, MANTIS_ERROR, 1, "UART exit failed");
 154
 155        if (mantis_dma_exit(mantis) < 0)
 156                dprintk(verbose, MANTIS_ERROR, 1, "DMA exit failed");
 157        if (mantis_dvb_exit(mantis) < 0)
 158                dprintk(verbose, MANTIS_ERROR, 1, "DVB exit failed");
 159        if (mantis_i2c_exit(mantis) < 0)
 160                dprintk(verbose, MANTIS_ERROR, 1, "I2C adapter delete.. failed");
 161
 162        return 0;
 163}
 164
 165/* Turn the given bit on or off. */
 166void gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
 167{
 168        u32 cur;
 169
 170        cur = mmread(MANTIS_GPIF_ADDR);
 171        if (value)
 172                mantis->gpio_status = cur | (1 << bitpos);
 173        else
 174                mantis->gpio_status = cur & (~(1 << bitpos));
 175
 176        mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
 177        mmwrite(0x00, MANTIS_GPIF_DOUT);
 178        udelay(100);
 179}
 180
 181/* direction = 0 , no CI passthrough ; 1 , CI passthrough */
 182void mantis_set_direction(struct mantis_pci *mantis, int direction)
 183{
 184        u32 reg;
 185
 186        reg = mmread(0x28);
 187        dprintk(verbose, MANTIS_DEBUG, 1, "TS direction setup");
 188        if (direction == 0x01) {
 189                /* to CI */
 190                reg |= 0x04;
 191                mmwrite(reg, 0x28);
 192                reg &= 0xff - 0x04;
 193                mmwrite(reg, 0x28);
 194        } else {
 195                reg &= 0xff - 0x04;
 196                mmwrite(reg, 0x28);
 197                reg |= 0x04;
 198                mmwrite(reg, 0x28);
 199        }
 200}
 201