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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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8
firmware/libcommon/source/card_emu.c
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@@ -24,6 +24,7 @@
#include "trace.h"
#include "iso7816_fidi.h"
#include "card_emu.h"
#include "simtrace.h"
#include "simtrace_prot.h"
#include "usb_buf.h"
#include <osmocom/core/linuxlist.h>
@@ -1096,7 +1097,7 @@ static void card_emu_report_config(struct card_handle *ch)
#else
cfg->slot_mux_nr = 0;
#endif
cfg->pres_pol = mode_cardemu_get_presence_pol(ch->num) | CEMU_CONFIG_PRES_POL_VALID;
usb_buf_upd_len_and_submit(msg);
}
@@ -1270,6 +1271,11 @@ int card_emu_set_config(struct card_handle *ch, const struct cardemu_usb_msg_con
}
#endif
if (scfg_len >= sizeof(uint32_t)+sizeof(uint8_t)+sizeof(uint8_t)) {
if (scfg->pres_pol & CEMU_CONFIG_PRES_POL_VALID)
mode_cardemu_set_presence_pol(ch->num, scfg->pres_pol & CEMU_CONFIG_PRES_POL_PRES_H);
}
/* send back a report of our current configuration */
card_emu_report_config(ch);