diff options
Diffstat (limited to 'chip/npcx/lpc.c')
| -rw-r--r-- | chip/npcx/lpc.c | 46 |
1 files changed, 34 insertions, 12 deletions
diff --git a/chip/npcx/lpc.c b/chip/npcx/lpc.c index 5f01627c68..03aa36f55a 100644 --- a/chip/npcx/lpc.c +++ b/chip/npcx/lpc.c @@ -45,7 +45,6 @@ #define INDEX_CHPREV 0x24 #define INDEX_SRID 0x27 -static uint8_t plt_rst_l; /* Platform reset assert status */ static uint32_t host_events; /* Currently pending SCI/SMI events */ static uint32_t event_mask[3]; /* Event masks for each type */ static struct host_packet lpc_packet; @@ -418,6 +417,8 @@ static void handle_acpi_write(int is_cmd) */ static void handle_host_write(int is_cmd) { + /* Set processing flag before reading command byte */ + SET_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2); /* * Read the command byte. This clears the FRMH bit in * the status byte. @@ -443,8 +444,7 @@ static void handle_host_write(int is_cmd) lpc_packet.response_size = 0; lpc_packet.driver_result = EC_RES_SUCCESS; - /* Set processing flag */ - SET_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2); + host_packet_receive(&lpc_packet); return; @@ -453,6 +453,9 @@ static void handle_host_write(int is_cmd) int size = lpc_host_args->data_size; int csum, i; + /* Clear processing flag */ + CLEAR_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2); + host_cmd_args.version = lpc_host_args->command_version; host_cmd_args.params = params_copy; host_cmd_args.params_size = size; @@ -489,6 +492,8 @@ static void handle_host_write(int is_cmd) } else { /* Old style command, now unsupported */ host_cmd_args.result = EC_RES_INVALID_COMMAND; + /* Clear processing flag */ + CLEAR_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2); } /* Hand off to host command handler */ @@ -718,25 +723,33 @@ void lpc_host_register_init(void) lpc_sib_write_reg(SIO_OFFSET, 0xF8, 0x00); /* enable SHM */ lpc_sib_write_reg(SIO_OFFSET, 0x30, 0x01); + + /* An active LRESET or PLTRST does not generate host domain reset */ + SET_BIT(NPCX_RSTCTL, NPCX_RSTCTL_LRESET_PLTRST_MODE); + CPRINTS("Host settings are done!"); } -int lpc_get_pltrst_asserted(void) +/* Initialize host settings by interrupt */ +void lpc_lreset_pltrst_handler(void) { - uint8_t cur_plt_rst_l; - /* Read current PLTRST status */ - cur_plt_rst_l = (NPCX_MSWCTL1 & 0x04) ? 1 : 0; + /* Clear pending bit of WUI */ + SET_BIT(NPCX_WKPCL(MIWU_TABLE_0 , MIWU_GROUP_5), 7); /* - * If plt_rst is deasserted for the first time - * Initialize all lpc settings + * Once LRESET is de-asserted (low -> high), + * we need to intialize lpc settings again. + * But if RSTCTL_LRESET_PLTRST_MODE is active, we needn't to do it again */ - if (cur_plt_rst_l == 0 && plt_rst_l == 1) + if(!IS_BIT_SET(NPCX_RSTCTL, NPCX_RSTCTL_LRESET_PLTRST_MODE)) lpc_host_register_init(); +} - plt_rst_l = cur_plt_rst_l; - return plt_rst_l; +int lpc_get_pltrst_asserted(void) +{ + /* Read current PLTRST status */ + return (NPCX_MSWCTL1 & 0x04) ? 1 : 0; } static void lpc_init(void) @@ -848,6 +861,15 @@ static void lpc_init(void) #ifdef BOARD_NPCX_EVB /* initial IO port address via SIB-write modules */ lpc_host_register_init(); +#else + /* Initialize LRESET# interrupt */ + /* Set detection mode to edge */ + CLEAR_BIT(NPCX_WKMOD(MIWU_TABLE_0, MIWU_GROUP_5), 7); + /* Handle interrupting on rising edge */ + CLEAR_BIT(NPCX_WKAEDG(MIWU_TABLE_0, MIWU_GROUP_5), 7); + SET_BIT(NPCX_WKEDG(MIWU_TABLE_0, MIWU_GROUP_5), 7); + /* Enable wake-up input sources */ + SET_BIT(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_5), 7); #endif } /* |