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usb-c: tcpc: Add support for Dead Battery

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Add Dead Battery functionality to the TCPC drive

Signed-off-by: Sam Hurst <sbh1187@gmail.com>
This commit is contained in:
Sam Hurst 2023-01-30 13:55:01 -08:00 • committed by Carles Cufí
commit cc416a8b9b
3 changed files with 29 additions and 0 deletions
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15
drivers/usb_c/tcpc/ucpd_stm32.c
View file

@ -1382,6 +1382,20 @@ static int ucpd_init(const struct device *dev)
/* Enable UCPD port */
LL_UCPD_Enable(config->ucpd_port);
/* Enable Dead Battery Support */
if (config->ucpd_dead_battery) {
#ifdef CONFIG_SOC_SERIES_STM32G0X
uint32_t cr;
cr = LL_UCPD_ReadReg(config->ucpd_port, CR);
cr |= UCPD_CR_DBATTEN;
LL_UCPD_WriteReg(config->ucpd_port, CR, cr);
update_stm32g0x_cc_line(config->ucpd_port);
#else
CLEAR_BIT(PWR->CR3, PWR_CR3_UCPD_DBDIS);
#endif
}
/* Initialize the isr */
ucpd_isr_init(dev);
} else {
@ -1445,6 +1459,7 @@ BUILD_ASSERT(DT_NUM_INST_STATUS_OKAY(DT_DRV_COMPAT) > 0,
.ucpd_params.transwin = DT_INST_PROP(inst, transwin) - 1, \
.ucpd_params.IfrGap = DT_INST_PROP(inst, ifrgap) - 1, \
.ucpd_params.HbitClockDiv = DT_INST_PROP(inst, hbitclkdiv) - 1, \
.ucpd_dead_battery = DT_INST_PROP(inst, dead_battery), \
}; \
DEVICE_DT_INST_DEFINE(inst, \
&ucpd_init, \

8
drivers/usb_c/tcpc/ucpd_stm32_priv.h
View file

@ -84,6 +84,12 @@
UCPD_ICR_TXMSGSENTCF | \
UCPD_ICR_TXMSGDISCCF)
/**
* @brief For STM32G0X devices, this macro enables
* Dead Battery functionality
*/
#define UCPD_CR_DBATTEN BIT(15)
/**
* @brief Map UCPD ANASUB value to TCPC RP value
*
@ -259,6 +265,8 @@ struct tcpc_config {
UCPD_TypeDef *ucpd_port;
/* STM32 UCPD parameters */
LL_UCPD_InitTypeDef ucpd_params;
/* STM32 UCPD dead battery support */
bool ucpd_dead_battery;
};
/**