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58 lines
1012 B
C
58 lines
1012 B
C
/* Code to control the PERST lines of attached modems
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*
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* Depending on the board this is running on, it might be possible
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* for the controller to set the status of the PERST input line of
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* the cellular modem. If the board supports this, it sets the
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* PIN_PERST1 and/or PIN_PERST2 defines in its board.h file.
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*/
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#include "board.h"
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#include "wwan_perst.h"
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#ifdef PIN_PERST1
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static const Pin pin_perst1 = PIN_PERST1;
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#endif
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#ifdef PIN_PERST2
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static const Pin pin_perst2 = PIN_PERST2;
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#endif
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int wwan_perst_do_reset(int modem_nr)
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{
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static const Pin *pin;
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switch (modem_nr) {
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#ifdef PIN_PERST1
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case 1:
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pin = &pin_perst1;
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break;
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#endif
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#ifdef PIN_PERST2
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case 2:
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pin = &pin_perst2;
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break;
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#endif
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default:
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return -1;
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}
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PIO_Clear(pin);
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mdelay(1);
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PIO_Set(pin);
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return 0;
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}
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int wwan_perst_init(void)
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{
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int num_perst = 0;
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#ifdef PIN_PERST1
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PIO_Configure(&pin_perst1, 1);
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num_perst++;
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#endif
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#ifdef PIN_PERST2
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PIO_Configure(&pin_perst2, 1);
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num_perst++;
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#endif
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return num_perst;
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}
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