drivers/media/video/icatch7002/icatch_spi_host.c

   1 /*icatch  host mode ,spi device \r
   2  *\r
   3  *\r
   4  * This program is distributed in the hope that it will be useful,\r
   5  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
   6  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
   7  * GNU General Public License for more details.\r
   8  */\r
   9 \r
  10 #include <linux/dma-mapping.h>\r
  11 #include <linux/interrupt.h>\r
  12 #include <linux/highmem.h>\r
  13 #include <linux/delay.h>\r
  14 #include <linux/slab.h>\r
  15 #include <linux/platform_device.h>\r
  16 #include <linux/clk.h>\r
  17 #include <linux/cpufreq.h>\r
  18 #include <mach/gpio.h>\r
  19 #include <mach/irqs.h>\r
  20 #include <linux/miscdevice.h>\r
  21 #include <asm/dma.h>\r
  22 #include <linux/preempt.h>\r
  23 #include <mach/board.h>\r
  24 #include "icatch_spi_host.h"\r
  25 #include <linux/miscdevice.h>\r
  26 struct spi_device* g_icatch_spi_dev = NULL;\r
  27 \r
  28 static int __devinit spi_icatch_probe(struct spi_device *spi)\r
  29 {       \r
  30         struct spi_test_data *spi_test_data;\r
  31         int ret = 0;\r
  32         \r
  33         spi->bits_per_word = 8;\r
  34         spi->mode = SPI_MODE_0;\r
  35         ret = spi_setup(spi);\r
  36         if (ret < 0){\r
  37                 dev_err(spi, "ERR: fail to setup spi\n");\r
  38                 return -1;\r
  39         }       \r
  40 \r
  41         g_icatch_spi_dev = spi;\r
  42 \r
  43         printk("%s:bus_num=%d,ok\n",__func__,spi->master->bus_num);\r
  44 \r
  45         return ret;\r
  46 \r
  47 }\r
  48 \r
  49 \r
  50 static struct spi_driver spi_icatch_driver = {\r
  51         .driver = {\r
  52                 .name           = "spi_icatch",\r
  53                 .bus            = &spi_bus_type,\r
  54                 .owner          = THIS_MODULE,\r
  55         },\r
  56 \r
  57         .probe          = spi_icatch_probe,\r
  58 };\r
  59 \r
  60 static struct miscdevice spi_test_icatch = {\r
  61         .minor = MISC_DYNAMIC_MINOR,\r
  62         .name = "spi_misc_icatch",\r
  63 };\r
  64 \r
  65 static int __init spi_icatch_init(void)\r
  66 {       \r
  67         spi_register_board_info(board_spi_icatch_devices, ARRAY_SIZE(board_spi_icatch_devices));\r
  68         \r
  69         misc_register(&spi_test_icatch);\r
  70         return spi_register_driver(&spi_icatch_driver);\r
  71 }\r
  72 \r
  73 static void __exit spi_icatch_exit(void)\r
  74 {\r
  75         \r
  76         misc_deregister(&spi_test_icatch);\r
  77         return spi_unregister_driver(&spi_icatch_driver);\r
  78 }\r
  79 module_init(spi_icatch_init);\r
  80 module_exit(spi_icatch_exit);\r
  81 \r
  82 \r