lib: sbi: Simplify timer platform operations

Instead of having timer_value(), timer_event_start(), and
timer_event_stop() callbacks in platform operations, it will
be much simpler for timer driver to directly register these
operations as device to the sbi_timer implementation.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

platform/andes/ae350/platform.c

@@ -172,9 +172,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_clear    = plicsw_ipi_clear,
 
 	.timer_init	   = ae350_timer_init,
-	.timer_value	   = plmt_timer_value,
-	.timer_event_start = plmt_timer_event_start,
-	.timer_event_stop  = plmt_timer_event_stop,
 
 	.vendor_ext_provider = ae350_vendor_ext_provider
 };

platform/andes/ae350/plmt.c

@@ -10,13 +10,14 @@
 
 #include <sbi/riscv_asm.h>
 #include <sbi/riscv_io.h>
+#include <sbi/sbi_timer.h>
 
 static u32 plmt_time_hart_count;
 static volatile void *plmt_time_base;
 static volatile u64 *plmt_time_val;
 static volatile u64 *plmt_time_cmp;
 
-u64 plmt_timer_value(void)
+static u64 plmt_timer_value(void)
 {
 #if __riscv_xlen == 64
 	return readq_relaxed(plmt_time_val);
@@ -32,7 +33,7 @@ u64 plmt_timer_value(void)
 #endif
 }
 
-void plmt_timer_event_stop(void)
+static void plmt_timer_event_stop(void)
 {
 	u32 target_hart = current_hartid();
 
@@ -48,7 +49,7 @@ void plmt_timer_event_stop(void)
 #endif
 }
 
-void plmt_timer_event_start(u64 next_event)
+static void plmt_timer_event_start(u64 next_event)
 {
 	u32 target_hart = current_hartid();
 
@@ -68,6 +69,13 @@ void plmt_timer_event_start(u64 next_event)
 
 }
 
+static struct sbi_timer_device plmt_timer = {
+	.name = "ae350_plmt",
+	.timer_value = plmt_timer_value,
+	.timer_event_start = plmt_timer_event_start,
+	.timer_event_stop = plmt_timer_event_stop
+};
+
 int plmt_warm_timer_init(void)
 {
 	u32 target_hart = current_hartid();
@@ -93,5 +101,7 @@ int plmt_cold_timer_init(unsigned long base, u32 hart_count)
 	plmt_time_val        = (u64 *)(plmt_time_base);
 	plmt_time_cmp        = (u64 *)(plmt_time_base + 0x8);
 
+	sbi_timer_set_device(&plmt_timer);
+
 	return 0;
 }

platform/andes/ae350/plmt.h

@@ -10,12 +10,6 @@
 #ifndef _AE350_PLMT_H_
 #define _AE350_PLMT_H_
 
-u64 plmt_timer_value(void);
-
-void plmt_timer_event_stop(void);
-
-void plmt_timer_event_start(u64 next_event);
-
 int plmt_warm_timer_init(void);
 
 int plmt_cold_timer_init(unsigned long base, u32 hart_count);

platform/fpga/ariane/platform.c

@@ -159,9 +159,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_send = clint_ipi_send,
 	.ipi_clear = clint_ipi_clear,
 	.timer_init = ariane_timer_init,
-	.timer_value = clint_timer_value,
-	.timer_event_start = clint_timer_event_start,
-	.timer_event_stop = clint_timer_event_stop,
 };
 
 const struct sbi_platform platform = {

platform/fpga/openpiton/platform.c

@@ -185,9 +185,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_send = clint_ipi_send,
 	.ipi_clear = clint_ipi_clear,
 	.timer_init = openpiton_timer_init,
-	.timer_value = clint_timer_value,
-	.timer_event_start = clint_timer_event_start,
-	.timer_event_stop = clint_timer_event_stop,
 };
 
 const struct sbi_platform platform = {

platform/generic/platform.c

@@ -218,9 +218,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_init		= fdt_ipi_init,
 	.ipi_exit		= fdt_ipi_exit,
 	.get_tlbr_flush_limit	= generic_tlbr_flush_limit,
-	.timer_value		= fdt_timer_value,
-	.timer_event_stop	= fdt_timer_event_stop,
-	.timer_event_start	= fdt_timer_event_start,
 	.timer_init		= fdt_timer_init,
 	.timer_exit		= fdt_timer_exit,
 	.system_reset_check	= generic_system_reset_check,

platform/kendryte/k210/platform.c

@@ -160,16 +160,13 @@ const struct sbi_platform_operations platform_ops = {
 	.system_reset		= k210_system_reset,
 
 	.timer_init	   = k210_timer_init,
-	.timer_value	   = clint_timer_value,
-	.timer_event_stop  = clint_timer_event_stop,
-	.timer_event_start = clint_timer_event_start,
 };
 
 const struct sbi_platform platform = {
 	.opensbi_version	= OPENSBI_VERSION,
 	.platform_version   	= SBI_PLATFORM_VERSION(0x0, 0x01),
 	.name			= "Kendryte K210",
-	.features		= SBI_PLATFORM_HAS_TIMER_VALUE,
+	.features		= 0,
 	.hart_count		= K210_HART_COUNT,
 	.hart_stack_size	= SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
 	.platform_ops_addr	= (unsigned long)&platform_ops

platform/nuclei/ux600/platform.c

@@ -207,9 +207,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_send		= clint_ipi_send,
 	.ipi_clear		= clint_ipi_clear,
 	.ipi_init		= ux600_ipi_init,
-	.timer_value		= clint_timer_value,
-	.timer_event_stop	= clint_timer_event_stop,
-	.timer_event_start	= clint_timer_event_start,
 	.timer_init		= ux600_timer_init,
 	.system_reset_check	= ux600_system_reset_check,
 	.system_reset		= ux600_system_reset

platform/sifive/fu540/platform.c

@@ -162,9 +162,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_clear		= clint_ipi_clear,
 	.ipi_init		= fu540_ipi_init,
 	.get_tlbr_flush_limit	= fu540_get_tlbr_flush_limit,
-	.timer_value		= clint_timer_value,
-	.timer_event_stop	= clint_timer_event_stop,
-	.timer_event_start	= clint_timer_event_start,
 	.timer_init		= fu540_timer_init,
 };
 

platform/template/platform.c

@@ -133,33 +133,6 @@ static int platform_timer_init(bool cold_boot)
 	return clint_warm_timer_init();
 }
 
-/*
- * Get platform timer value.
- */
-static u64 platform_timer_value(void)
-{
-	/* Example if the generic CLINT driver is used */
-	return clint_timer_value();
-}
-
-/*
- * Start platform timer event for current HART.
- */
-static void platform_timer_event_start(u64 next_event)
-{
-	/* Example if the generic CLINT driver is used */
-	clint_timer_event_start(next_event);
-}
-
-/*
- * Stop platform timer event for current HART.
- */
-static void platform_timer_event_stop(void)
-{
-	/* Example if the generic CLINT driver is used */
-	clint_timer_event_stop();
-}
-
 /*
  * Check reset type and reason supported by the platform.
  */
@@ -186,9 +159,6 @@ const struct sbi_platform_operations platform_ops = {
 	.ipi_send		= platform_ipi_send,
 	.ipi_clear		= platform_ipi_clear,
 	.ipi_init		= platform_ipi_init,
-	.timer_value		= platform_timer_value,
-	.timer_event_stop	= platform_timer_event_stop,
-	.timer_event_start	= platform_timer_event_start,
 	.timer_init		= platform_timer_init,
 	.system_reset_check	= platform_system_reset_check,
 	.system_reset		= platform_system_reset