linux/drivers/media/pci/mantis/mantis_core.c
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   1/*
   2        Mantis PCI bridge driver
   3
   4        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   5
   6        This program is free software; you can redistribute it and/or modify
   7        it under the terms of the GNU General Public License as published by
   8        the Free Software Foundation; either version 2 of the License, or
   9        (at your option) any later version.
  10
  11        This program is distributed in the hope that it will be useful,
  12        but WITHOUT ANY WARRANTY; without even the implied warranty of
  13        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14        GNU General Public License for more details.
  15
  16        You should have received a copy of the GNU General Public License
  17        along with this program; if not, write to the Free Software
  18        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19*/
  20
  21#include "mantis_common.h"
  22#include "mantis_core.h"
  23#include "mantis_vp1033.h"
  24#include "mantis_vp1034.h"
  25#include "mantis_vp1041.h"
  26#include "mantis_vp2033.h"
  27#include "mantis_vp2040.h"
  28#include "mantis_vp3030.h"
  29
  30static int read_eeprom_byte(struct mantis_pci *mantis, u8 *data, u8 length)
  31{
  32        int err;
  33        struct i2c_msg msg[] = {
  34                {
  35                        .addr = 0x50,
  36                        .flags = 0,
  37                        .buf = data,
  38                        .len = 1
  39                }, {
  40                        .addr = 0x50,
  41                        .flags = I2C_M_RD,
  42                        .buf = data,
  43                        .len = length
  44                },
  45        };
  46
  47        err = i2c_transfer(&mantis->adapter, msg, 2);
  48        if (err < 0) {
  49                dprintk(verbose, MANTIS_ERROR, 1,
  50                        "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
  51                        err, data[0], data[1]);
  52
  53                return err;
  54        }
  55
  56        return 0;
  57}
  58
  59static int get_mac_address(struct mantis_pci *mantis)
  60{
  61        int err;
  62
  63        mantis->mac_address[0] = 0x08;
  64        err = read_eeprom_byte(mantis, &mantis->mac_address[0], 6);
  65        if (err < 0) {
  66                dprintk(verbose, MANTIS_ERROR, 1, "Mantis EEPROM read error");
  67
  68                return err;
  69        }
  70        dprintk(verbose, MANTIS_ERROR, 0,
  71                "    MAC Address=[%pM]\n", mantis->mac_address);
  72
  73        return 0;
  74}
  75
  76#define MANTIS_MODEL_UNKNOWN    "UNKNOWN"
  77#define MANTIS_DEV_UNKNOWN      "UNKNOWN"
  78
  79struct mantis_hwconfig unknown_device = {
  80        .model_name     = MANTIS_MODEL_UNKNOWN,
  81        .dev_type       = MANTIS_DEV_UNKNOWN,
  82};
  83
  84static void mantis_load_config(struct mantis_pci *mantis)
  85{
  86        switch (mantis->subsystem_device) {
  87        case MANTIS_VP_1033_DVB_S:      /* VP-1033 */
  88                mantis->hwconfig = &vp1033_mantis_config;
  89                break;
  90        case MANTIS_VP_1034_DVB_S:      /* VP-1034 */
  91                mantis->hwconfig = &vp1034_mantis_config;
  92                break;
  93        case MANTIS_VP_1041_DVB_S2:     /* VP-1041 */
  94        case TECHNISAT_SKYSTAR_HD2:
  95                mantis->hwconfig = &vp1041_mantis_config;
  96                break;
  97        case MANTIS_VP_2033_DVB_C:      /* VP-2033 */
  98                mantis->hwconfig = &vp2033_mantis_config;
  99                break;
 100        case MANTIS_VP_2040_DVB_C:      /* VP-2040 */
 101        case CINERGY_C: /* VP-2040 clone */
 102        case TECHNISAT_CABLESTAR_HD2:
 103                mantis->hwconfig = &vp2040_mantis_config;
 104                break;
 105        case MANTIS_VP_3030_DVB_T:      /* VP-3030 */
 106                mantis->hwconfig = &vp3030_mantis_config;
 107                break;
 108        default:
 109                mantis->hwconfig = &unknown_device;
 110                break;
 111        }
 112}
 113
 114int mantis_core_init(struct mantis_pci *mantis)
 115{
 116        int err = 0;
 117
 118        mantis_load_config(mantis);
 119        dprintk(verbose, MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
 120                mantis->hwconfig->model_name, mantis->hwconfig->dev_type,
 121                mantis->pdev->bus->number, PCI_SLOT(mantis->pdev->devfn), PCI_FUNC(mantis->pdev->devfn));
 122        dprintk(verbose, MANTIS_ERROR, 0, "    Mantis Rev %d [%04x:%04x], ",
 123                mantis->revision,
 124                mantis->subsystem_vendor, mantis->subsystem_device);
 125        dprintk(verbose, MANTIS_ERROR, 0,
 126                "irq: %d, latency: %d\n    memory: 0x%lx, mmio: 0x%p\n",
 127                mantis->pdev->irq, mantis->latency,
 128                mantis->mantis_addr, mantis->mantis_mmio);
 129
 130        err = mantis_i2c_init(mantis);
 131        if (err < 0) {
 132                dprintk(verbose, MANTIS_ERROR, 1, "Mantis I2C init failed");
 133                return err;
 134        }
 135        err = get_mac_address(mantis);
 136        if (err < 0) {
 137                dprintk(verbose, MANTIS_ERROR, 1, "get MAC address failed");
 138                return err;
 139        }
 140        err = mantis_dma_init(mantis);
 141        if (err < 0) {
 142                dprintk(verbose, MANTIS_ERROR, 1, "Mantis DMA init failed");
 143                return err;
 144        }
 145        err = mantis_dvb_init(mantis);
 146        if (err < 0) {
 147                dprintk(verbose, MANTIS_DEBUG, 1, "Mantis DVB init failed");
 148                return err;
 149        }
 150        err = mantis_uart_init(mantis);
 151        if (err < 0) {
 152                dprintk(verbose, MANTIS_DEBUG, 1, "Mantis UART init failed");
 153                return err;
 154        }
 155
 156        return 0;
 157}
 158
 159int mantis_core_exit(struct mantis_pci *mantis)
 160{
 161        mantis_dma_stop(mantis);
 162        dprintk(verbose, MANTIS_ERROR, 1, "DMA engine stopping");
 163
 164        mantis_uart_exit(mantis);
 165        dprintk(verbose, MANTIS_ERROR, 1, "UART exit failed");
 166
 167        if (mantis_dma_exit(mantis) < 0)
 168                dprintk(verbose, MANTIS_ERROR, 1, "DMA exit failed");
 169        if (mantis_dvb_exit(mantis) < 0)
 170                dprintk(verbose, MANTIS_ERROR, 1, "DVB exit failed");
 171        if (mantis_i2c_exit(mantis) < 0)
 172                dprintk(verbose, MANTIS_ERROR, 1, "I2C adapter delete.. failed");
 173
 174        return 0;
 175}
 176
 177/* Turn the given bit on or off. */
 178void gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
 179{
 180        u32 cur;
 181
 182        cur = mmread(MANTIS_GPIF_ADDR);
 183        if (value)
 184                mantis->gpio_status = cur | (1 << bitpos);
 185        else
 186                mantis->gpio_status = cur & (~(1 << bitpos));
 187
 188        mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
 189        mmwrite(0x00, MANTIS_GPIF_DOUT);
 190        udelay(100);
 191}
 192
 193/* direction = 0 , no CI passthrough ; 1 , CI passthrough */
 194void mantis_set_direction(struct mantis_pci *mantis, int direction)
 195{
 196        u32 reg;
 197
 198        reg = mmread(0x28);
 199        dprintk(verbose, MANTIS_DEBUG, 1, "TS direction setup");
 200        if (direction == 0x01) {
 201                /* to CI */
 202                reg |= 0x04;
 203                mmwrite(reg, 0x28);
 204                reg &= 0xff - 0x04;
 205                mmwrite(reg, 0x28);
 206        } else {
 207                reg &= 0xff - 0x04;
 208                mmwrite(reg, 0x28);
 209                reg |= 0x04;
 210                mmwrite(reg, 0x28);
 211        }
 212}
 213