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firmware: allow to change the sim presence pin polarity

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The sim presence pin allows the simtrace2 to inform the modem
about the presence of the simcard. On a generic simcard slot a
button is pressed by the simcard which generate a high or low voltage level.
Even though there are specifications of minipcie or ngff defining this signal, certain
modems behave different.
Certain modems require different signals from the specification.

Extend the usb protocol to set the behaviour at runtime.

Related: SYS#6946
Change-Id: I77118114ba873fdf0778137402888b40f2442456
This commit is contained in:
Alexander Couzens
2024-05-31 16:32:36 +02:00
parent 0cd501ef80
commit ec9b0b5254
7 changed files with 64 additions and 5 deletions
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9
firmware/libcommon/include/simtrace_prot.h
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@@ -261,12 +261,21 @@ struct cardemu_usb_msg_error {
/* enable/disable the generation of DO_STATUS on IRQ endpoint */
#define CEMU_FEAT_F_STATUS_IRQ 0x00000001
#define CEMU_CONFIG_PRES_POL_PRES_L 0x00
#define CEMU_CONFIG_PRES_POL_PRES_H 0x01
#define CEMU_CONFIG_PRES_POL_VALID 0x02
/* SIMTRACE_MSGT_BD_CEMU_CONFIG */
struct cardemu_usb_msg_config {
/* bit-mask of CEMU_FEAT_F flags */
uint32_t features;
/* the selected slot number (if an external mux is present) */
uint8_t slot_mux_nr;
/* Sim presence pin polarity. Bit 1 is a validity bit. Bit 0 gpio value when sim present.
* When sim is present, set sim_present gpio to high -> 0x03
* When sim is present, set sim_present gpio to low -> 0x02
*/
uint8_t pres_pol;
} __attribute__ ((packed));
/***********************************************************************