diff options
Diffstat (limited to 'src/soc/intel/apollolake')
| -rw-r--r-- | src/soc/intel/apollolake/gpio.c | 11 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/gpio.h | 25 | ||||
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/gpio_defs.h | 26 |
3 files changed, 54 insertions, 8 deletions
diff --git a/src/soc/intel/apollolake/gpio.c b/src/soc/intel/apollolake/gpio.c index a3ffb3de0f..2d325255e7 100644 --- a/src/soc/intel/apollolake/gpio.c +++ b/src/soc/intel/apollolake/gpio.c @@ -85,10 +85,19 @@ static void gpio_configure_itss(const struct pad_config *cfg, void gpio_configure_pad(const struct pad_config *cfg) { + uint32_t dw1; const struct pad_community *comm = gpio_get_community(cfg->pad); uint16_t config_offset = PAD_CFG_OFFSET(cfg->pad - comm->first_pad); + + /* Iostandby bits are tentatively stored in [3:0] bits (RO) of config1. + * dw1 is used to extract the bits of Iostandby. + * This is done to preserve config1 size as unit16 in gpio.h. + */ + dw1 = cfg->config1 & ~PAD_CFG1_IOSSTATE_MASK; + dw1 |= (cfg->config1 & PAD_CFG1_IOSSTATE_MASK) << PAD_CFG1_IOSSTATE_SHIFT; + iosf_write(comm->port, config_offset, cfg->config0); - iosf_write(comm->port, config_offset + sizeof(uint32_t), cfg->config1); + iosf_write(comm->port, config_offset + sizeof(uint32_t), dw1); gpio_configure_itss(cfg, comm->port, config_offset); } diff --git a/src/soc/intel/apollolake/include/soc/gpio.h b/src/soc/intel/apollolake/include/soc/gpio.h index 1ebac2dabc..fc2401d165 100644 --- a/src/soc/intel/apollolake/include/soc/gpio.h +++ b/src/soc/intel/apollolake/include/soc/gpio.h @@ -28,6 +28,7 @@ typedef uint32_t gpio_t; #define PAD_FUNC(value) PAD_CFG0_MODE_##value #define PAD_RESET(value) PAD_CFG0_RESET_##value #define PAD_PULL(value) PAD_CFG1_PULL_##value +#define PAD_IOSSTATE(value) PAD_CFG1_IOSSTATE_##value #define PAD_IRQ_CFG(route, trig, inv) \ (PAD_CFG0_ROUTE_##route | \ PAD_CFG0_TRIG_##trig | \ @@ -42,19 +43,25 @@ typedef uint32_t gpio_t; /* Native function configuration */ #define PAD_CFG_NF(pad, pull, rst, func) \ - _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull)) + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(TxLASTRxE)) + +/* Native function configuration for standby state */ +#define PAD_CFG_NF_IOSSTATE(pad, pull, rst, func, iosstate) \ + _PAD_CFG_STRUCT(pad, PAD_RESET(rst) | PAD_FUNC(func), PAD_PULL(pull) | \ + PAD_IOSSTATE(iosstate)) /* General purpose output, no pullup/down. */ #define PAD_CFG_GPO(pad, val, rst) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_RX_DISABLE | !!val, \ - PAD_PULL(NONE)) + PAD_PULL(NONE) | PAD_IOSSTATE(TxLASTRxE)) /* General purpose input */ #define PAD_CFG_GPI(pad, pull, rst) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE, \ - PAD_PULL(pull)) + PAD_PULL(pull) | PAD_IOSSTATE(TxLASTRxE)) /* No Connect configuration for unused pad. * NC should be GPI with Term as PU20K, PD20K, NONE depending upon default Term @@ -65,7 +72,8 @@ typedef uint32_t gpio_t; #define PAD_CFG_GPI_APIC(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ - PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull)) + PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TxLASTRxE)) /* * The following APIC macros assume the APIC will handle the filtering @@ -82,7 +90,8 @@ typedef uint32_t gpio_t; #define PAD_CFG_GPI_SMI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ - PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull)) + PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TxLASTRxE)) #define PAD_CFG_GPI_SMI_LOW(pad, pull, rst, trig) \ PAD_CFG_GPI_SMI(pad, pull, rst, trig, INVERT) @@ -94,7 +103,8 @@ typedef uint32_t gpio_t; #define PAD_CFG_GPI_SCI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ - PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull)) + PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TxLASTRxE)) #define PAD_CFG_GPI_SCI_LOW(pad, pull, rst, trig) \ PAD_CFG_GPI_SCI(pad, pull, rst, trig, INVERT) @@ -106,7 +116,8 @@ typedef uint32_t gpio_t; #define PAD_CFG_GPI_NMI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ - PAD_IRQ_CFG(NMI, trig, inv), PAD_PULL(pull)) + PAD_IRQ_CFG(NMI, trig, inv), PAD_PULL(pull) | \ + PAD_IOSSTATE(TxLASTRxE)) struct pad_config { uint32_t config0; diff --git a/src/soc/intel/apollolake/include/soc/gpio_defs.h b/src/soc/intel/apollolake/include/soc/gpio_defs.h index aa1ce8cf65..0a9fb151ea 100644 --- a/src/soc/intel/apollolake/include/soc/gpio_defs.h +++ b/src/soc/intel/apollolake/include/soc/gpio_defs.h @@ -86,6 +86,32 @@ #define PAD_CFG1_PULL_UP_20K (0xc << 10) #define PAD_CFG1_PULL_UP_667 (0xd << 10) #define PAD_CFG1_PULL_NATIVE (0xf << 10) +/* Tx enabled driving last value driven, Rx enabled */ +#define PAD_CFG1_IOSSTATE_TxLASTRxE (0x0 << 0) +/* Tx enabled driving 0, Rx disabled and Rx driving 0 back to its controller + * internally */ +#define PAD_CFG1_IOSSTATE_Tx0RxDCRx0 (0x1 << 0) +/* Tx enabled driving 0, Rx disabled and Rx driving 1 back to its controller + * internally */ +#define PAD_CFG1_IOSSTATE_Tx0RXDCRx1 (0x2 << 0) +/* Tx enabled driving 1, Rx disabled and Rx driving 0 back to its controller + * internally */ +#define PAD_CFG1_IOSSTATE_Tx1RXDCRx0 (0x3 << 0) +/* Tx enabled driving 1, Rx disabled and Rx driving 1 back to its controller + * internally */ +#define PAD_CFG1_IOSSTATE_Tx1RxDCRx1 (0x4 << 0) +/* Tx enabled driving 0, Rx enabled */ +#define PAD_CFG1_IOSSTATE_Tx0RxE (0x5 << 0) +/* Tx enabled driving 1, Rx enabled */ +#define PAD_CFG1_IOSSTATE_Tx1RxE (0x6 << 0) +/* Hi-Z, Rx driving 0 back to its controller internally */ +#define PAD_CFG1_IOSSTATE_HIZCRx0 (0x7 << 0) +/* Hi-Z, Rx driving 1 back to its controller internally */ +#define PAD_CFG1_IOSSTATE_HIZCRx1 (0x8 << 0) +#define PAD_CFG1_IOSSTATE_TxDRxE (0x9 << 0) /* Tx disabled, Rx enabled */ +#define PAD_CFG1_IOSSTATE_IGNORE (0xf << 0) /* Ignore Iostandby */ +#define PAD_CFG1_IOSSTATE_MASK 0xf /* mask to extract Iostandby bits */ +#define PAD_CFG1_IOSSTATE_SHIFT 14 /* set Iostandby bits [17:14] */ #define PAD_CFG_BASE 0x500 #define PAD_CFG_OFFSET(pad) (PAD_CFG_BASE + ((pad) * 8)) |