void pinmux_config_pingroup(const struct pingroup_config *config)
{
enum pmux_pingrp pin = config->pingroup;
pinmux_set_func(pin, config->func);
pinmux_set_pullupdown(pin, config->pull);
pinmux_set_tristate(pin, config->tristate);
}
void pinmux_config_pingroup(struct pingroup_config *config)
{
enum pmux_pingrp pin = config->pingroup;
pinmux_set_func(pin, config->func);
pinmux_set_pullupdown(pin, config->pull);
pinmux_set_tristate(pin, config->tristate);
pinmux_set_io(pin, config->io);
pinmux_set_lock(pin, config->lock);
pinmux_set_od(pin, config->od);
pinmux_set_ioreset(pin, config->ioreset);
}
int funcmux_select(enum periph_id id, int config)
{
int bad_config = config != FUNCMUX_DEFAULT;
switch (id) {
case PERIPH_ID_UART1:
if (config == FUNCMUX_UART1_IRRX_IRTX) {
pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA);
pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA);
pinmux_tristate_disable(PINGRP_IRRX);
pinmux_tristate_disable(PINGRP_IRTX);
/*
* Tegra appears to boot with function UARTA pre-
* selected on mux group SDB. If two mux groups are
* both set to the same function, it's unclear which
* group's pins drive the RX signals into the HW.
* For UARTA, SDB certainly overrides group IRTX in
* practice. To solve this, configure some alternative
* function on SDB to avoid the conflict. Also, tri-
* state the group to avoid driving any signal onto it
* until we know what's connected.
*/
pinmux_tristate_enable(PINGRP_SDB);
pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3);
}
break;
case PERIPH_ID_UART2:
if (config == FUNCMUX_UART2_IRDA) {
pinmux_set_func(PINGRP_UAD, PMUX_FUNC_IRDA);
pinmux_tristate_disable(PINGRP_UAD);
}
break;
case PERIPH_ID_UART4:
if (config == FUNCMUX_UART4_GMC) {
pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD);
pinmux_tristate_disable(PINGRP_GMC);
}
break;
case PERIPH_ID_DVC_I2C:
/* there is only one selection, pinmux_config is ignored */
if (config == FUNCMUX_DVC_I2CP) {
pinmux_set_func(PINGRP_I2CP, PMUX_FUNC_I2C);
pinmux_tristate_disable(PINGRP_I2CP);
}
break;
case PERIPH_ID_I2C1:
/* support pinmux_config of 0 for now, */
if (config == FUNCMUX_I2C1_RM) {
pinmux_set_func(PINGRP_RM, PMUX_FUNC_I2C);
pinmux_tristate_disable(PINGRP_RM);
}
break;
case PERIPH_ID_I2C2: /* I2C2 */
switch (config) {
case FUNCMUX_I2C2_DDC: /* DDC pin group, select I2C2 */
pinmux_set_func(PINGRP_DDC, PMUX_FUNC_I2C2);
/* PTA to HDMI */
pinmux_set_func(PINGRP_PTA, PMUX_FUNC_HDMI);
pinmux_tristate_disable(PINGRP_DDC);
break;
case FUNCMUX_I2C2_PTA: /* PTA pin group, select I2C2 */
pinmux_set_func(PINGRP_PTA, PMUX_FUNC_I2C2);
/* set DDC_SEL to RSVDx (RSVD2 works for now) */
pinmux_set_func(PINGRP_DDC, PMUX_FUNC_RSVD2);
pinmux_tristate_disable(PINGRP_PTA);
bad_config = 0;
break;
}
break;
case PERIPH_ID_I2C3: /* I2C3 */
/* support pinmux_config of 0 for now */
if (config == FUNCMUX_I2C3_DTF) {
pinmux_set_func(PINGRP_DTF, PMUX_FUNC_I2C3);
pinmux_tristate_disable(PINGRP_DTF);
}
break;
case PERIPH_ID_SDMMC2:
if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) {
pinmux_set_func(PINGRP_DTA, PMUX_FUNC_SDIO2);
pinmux_set_func(PINGRP_DTD, PMUX_FUNC_SDIO2);
pinmux_tristate_disable(PINGRP_DTA);
pinmux_tristate_disable(PINGRP_DTD);
}
break;
case PERIPH_ID_SDMMC3:
switch (config) {
case FUNCMUX_SDMMC3_SDB_SLXA_8BIT:
pinmux_set_func(PINGRP_SLXA, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SLXC, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SLXD, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SLXK, PMUX_FUNC_SDIO3);
pinmux_tristate_disable(PINGRP_SLXA);
pinmux_tristate_disable(PINGRP_SLXC);
pinmux_tristate_disable(PINGRP_SLXD);
pinmux_tristate_disable(PINGRP_SLXK);
/* fall through */
case FUNCMUX_SDMMC3_SDB_4BIT:
pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3);
pinmux_tristate_disable(PINGRP_SDB);
pinmux_tristate_disable(PINGRP_SDC);
pinmux_tristate_disable(PINGRP_SDD);
bad_config = 0;
break;
}
break;
case PERIPH_ID_SDMMC4:
switch (config) {
case FUNCMUX_SDMMC4_ATC_ATD_8BIT:
pinmux_set_func(PINGRP_ATC, PMUX_FUNC_SDIO4);
pinmux_set_func(PINGRP_ATD, PMUX_FUNC_SDIO4);
pinmux_tristate_disable(PINGRP_ATC);
pinmux_tristate_disable(PINGRP_ATD);
break;
case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT:
pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
pinmux_tristate_disable(PINGRP_GME);
/* fall through */
case FUNCMUX_SDMMC4_ATB_GMA_4_BIT:
pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
pinmux_tristate_disable(PINGRP_ATB);
pinmux_tristate_disable(PINGRP_GMA);
bad_config = 0;
break;
}
break;
case PERIPH_ID_KBC:
if (config == FUNCMUX_DEFAULT) {
enum pmux_pingrp grp[] = {PINGRP_KBCA, PINGRP_KBCB,
PINGRP_KBCC, PINGRP_KBCD, PINGRP_KBCE,
PINGRP_KBCF
};
int i;
for (i = 0; i < ARRAY_SIZE(grp); i++) {
pinmux_tristate_disable(grp[i]);
pinmux_set_func(grp[i], PMUX_FUNC_KBC);
pinmux_set_pullupdown(grp[i], PMUX_PULL_UP);
}
break;
}
default:
debug("%s: invalid periph_id %d", __func__, id);
return -1;
}
if (bad_config) {
debug("%s: invalid config %d for periph_id %d", __func__,
config, id);
return -1;
}
return 0;
}
