/arch/ppc/syslib/ppc4xx_pm.c

https://bitbucket.org/evzijst/gittest · C · 47 lines · 24 code · 11 blank · 12 comment · 0 complexity · 3f9c5e994df53ba5ec40e449689c2b94 MD5 · raw file 

    

  1. /*
    2. 

  2.  * Author: Armin Kuster <akuster@mvista.com>
    3. 

  3.  *
    4. 

  4.  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
    5. 

  5.  * the terms of the GNU General Public License version 2.  This program
    6. 

  6.  * is licensed "as is" without any warranty of any kind, whether express
    7. 

  7.  * or implied.
    8. 

  8.  *
    9. 

  9.  * This an attempt to get Power Management going for the IBM 4xx processor.
    10. 

  10.  * This was derived from the ppc4xx._setup.c file
    11. 

  11.  */
    12. 

  12. 

  13. #include <linux/config.h>
    14. 

  14. #include <linux/init.h>
    15. 

  15. 

  16. #include <asm/ibm4xx.h>
    17. 

  17. 

  18. void __init
    19. 

  19. ppc4xx_pm_init(void)
    20. 

  20. {
    21. 

  21. 

  22. 	unsigned int value = 0;
    23. 

  23. 

  24. 	/* turn off unused hardware to save power */
    25. 

  25. #ifdef CONFIG_405GP
    26. 

  26. 	value |= CPM_DCP;	/* CodePack */
    27. 

  27. #endif
    28. 

  28. 

  29. #if !defined(CONFIG_IBM_OCP_GPIO)
    30. 

  30. 	value |= CPM_GPIO0;
    31. 

  31. #endif
    32. 

  32. 

  33. #if !defined(CONFIG_PPC405_I2C_ADAP)
    34. 

  34. 	value |= CPM_IIC0;
    35. 

  35. #ifdef CONFIG_STB03xxx
    36. 

  36. 	value |= CPM_IIC1;
    37. 

  37. #endif
    38. 

  38. #endif
    39. 

  39. 

  40. 

  41. #if !defined(CONFIG_405_DMA)
    42. 

  42. 	value |= CPM_DMA;
    43. 

  43. #endif
    44. 

  44. 

  45. 	mtdcr(DCRN_CPMFR, value);
    46. 

  46. 

  47. }
    48.