drivers: interrupt_controller: intc_clic: add CLIC parameters

Add support for CLIC hardware parameters based on the hardware
implementation.

  1. CLIC_PARAMETER_INTCTLBITS
    Specifies the number of modifiable bit in interrupt control register.

  2. CLIC_PARAMETER_MNLBITS
    Specifies the number of bits are assigned to interrupt level in the
    interrupt control bits.

Signed-off-by: Jimmy Zheng <[email protected]>

Author: jimmyzhe

drivers/interrupt_controller/Kconfig.clic

@@ -43,6 +43,22 @@ config CLIC_SMCLICCONFIG_EXT
 	  Enables the SMCLICCONFIG extension, allowing configuration of CLIC
 	  parameters such as the number of interrupt level bits.
 
+config CLIC_PARAMETER_INTCTLBITS
+	int "The number of modifiable bits in the clicintctl registers"
+	range 0 8
+	default 8
+	help
+	  This option specifies the number of modifiable bits in the clicintctl
+	  registers.
+
+config CLIC_PARAMETER_MNLBITS
+	int "The number of bits in CLICINTCTLBITS to encode the interrupt level"
+	range 0 CLIC_PARAMETER_INTCTLBITS
+	default 0
+	help
+	  This option specifies the number of bits in CLICINTCTLBITS assigned to
+	  encode the interrupt level at machine mode.
+
 config LEGACY_CLIC
 	bool "Use the legacy clic specification"
 	depends on RISCV_HAS_CLIC

drivers/interrupt_controller/intc_clic.c

@@ -245,8 +245,8 @@ static int clic_init(const struct device *dev)
 
 #define CLIC_INTC_DATA_INIT(n)                                                                     \
 	static struct clic_data clic_data_##n = {                                                  \
-		.nlbits = 0,                                                                       \
-		.intctlbits = 8,                                                                   \
+		.nlbits = CONFIG_CLIC_PARAMETER_MNLBITS,                                           \
+		.intctlbits = CONFIG_CLIC_PARAMETER_INTCTLBITS,                                    \
 	};
 #define CLIC_INTC_CONFIG_INIT(n)                                                                   \
 	const static struct clic_config clic_config_##n = {                                        \