drivers/media/pci/mantis/mantis_core.c

   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
  30 static 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
  59 static 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
  79 struct mantis_hwconfig unknown_device = {
  80         .model_name     = MANTIS_MODEL_UNKNOWN,
  81         .dev_type       = MANTIS_DEV_UNKNOWN,
  82 };
  83
  84 static 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
 114 int 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
 159 int 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. */
 178 void 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 */
 194 void 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 }