[PATCH 3/3] RISC-V: drop old timer handling code

[Antony Pavlov]

Use drivers/clocksource/timer-riscv.c driver introduced in
'2ee369dcf7a5 ("clocksource: add driver for RISC-V and CLINT
timers")' instead.

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/riscv/lib/Makefile      |  2 +-
 arch/riscv/lib/riscv_timer.c | 63 ------------------------------------
 2 files changed, 1 insertion(+), 64 deletions(-)

diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index a9bf68bca5..a4eaa1005d 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -2,7 +2,7 @@
 
 extra-y += barebox.lds
 
-obj-y += riscv_timer.o dtb.o
+obj-y += dtb.o
 obj-pbl-y += sections.o setupc.o reloc.o sections.o runtime-offset.o
 obj-$(CONFIG_HAS_ARCH_SJLJ) += setjmp.o longjmp.o
 obj-$(CONFIG_RISCV_OPTIMZED_STRING_FUNCTIONS) += memcpy.o memset.o memmove.o
diff --git a/arch/riscv/lib/riscv_timer.c b/arch/riscv/lib/riscv_timer.c
deleted file mode 100644
index 919d77d4b5..0000000000
--- a/arch/riscv/lib/riscv_timer.c
+++ /dev/null
@@ -1,63 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2017 Antony Pavlov <antonynpavlov at gmail.com>
- *
- * This file is part of barebox.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-/**
- * @file
- * @brief Clocksource based on RISC-V cycle CSR timer
- */
-
-#include <init.h>
-#include <of.h>
-#include <linux/clk.h>
-#include <clock.h>
-
-static uint64_t rdcycle_read(void)
-{
-	register unsigned long __v;
-
-	__asm__ __volatile__ ("rdcycle %0" : "=r" (__v));
-
-	return __v;
-}
-
-static struct clocksource rdcycle_cs = {
-	.read	= rdcycle_read,
-	.mask	= CLOCKSOURCE_MASK(32),
-};
-
-static int rdcycle_cs_init(void)
-{
-	unsigned int cycle_frequency;
-
-	/* default rate: 100 MHz */
-	cycle_frequency = 100000000;
-
-	if (IS_ENABLED(CONFIG_OFTREE)) {
-		struct device_node *np;
-		struct clk *clk;
-
-		np = of_get_cpu_node(0, NULL);
-		if (np) {
-			clk = of_clk_get(np, 0);
-			if (!IS_ERR(clk)) {
-				cycle_frequency = clk_get_rate(clk);
-			}
-		}
-	}
-
-	clocks_calc_mult_shift(&rdcycle_cs.mult, &rdcycle_cs.shift,
-		cycle_frequency, NSEC_PER_SEC, 10);
-
-	return init_clock(&rdcycle_cs);
-}
-postcore_initcall(rdcycle_cs_init);
-- 
2.30.1