On 10/13/20 8:43 PM, Rick Chen wrote:
Half of this driver is a DM-based timer driver, and half is RISC-V-specific IPI code. Move the timer portions in with the other timer drivers. The KConfig is not moved, since it also enables IPIs. It could also be split into two configs, but no boards use the timer but not the IPI atm, so I haven't split it.
Signed-off-by: Sean Anderson seanga2@gmail.com
MAINTAINERS | 1 + arch/riscv/lib/sifive_clint.c | 43 ++------------------------ drivers/timer/Makefile | 1 + drivers/timer/sifive_clint_timer.c | 49 ++++++++++++++++++++++++++++++ 4 files changed, 53 insertions(+), 41 deletions(-) create mode 100644 drivers/timer/sifive_clint_timer.c
diff --git a/MAINTAINERS b/MAINTAINERS index 32a2cdb52b..73d1c20a26 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -928,6 +928,7 @@ T: git https://gitlab.denx.de/u-boot/custodians/u-boot-riscv.git F: arch/riscv/ F: cmd/riscv/ F: drivers/timer/andes_plmt_timer.c +F: drivers/timer/sifive_clint_timer.c F: tools/prelink-riscv.c
RISC-V KENDRYTE diff --git a/arch/riscv/lib/sifive_clint.c b/arch/riscv/lib/sifive_clint.c index c9704c596f..c8079dc510 100644 --- a/arch/riscv/lib/sifive_clint.c +++ b/arch/riscv/lib/sifive_clint.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /*
- Copyright (C) 2020, Sean Anderson seanga2@gmail.com
- Copyright (C) 2018, Bin Meng bmeng.cn@gmail.com
- U-Boot syscon driver for SiFive's Core Local Interruptor (CLINT).
@@ -8,19 +9,13 @@ */
#include <common.h> -#include <clk.h> #include <dm.h> -#include <timer.h> #include <asm/io.h> -#include <asm/syscon.h> +#include <asm/smp.h> #include <linux/err.h>
/* MSIP registers */ #define MSIP_REG(base, hart) ((ulong)(base) + (hart) * 4) -/* mtime compare register */ -#define MTIMECMP_REG(base, hart) ((ulong)(base) + 0x4000 + (hart) * 8) -/* mtime register */ -#define MTIME_REG(base) ((ulong)(base) + 0xbff8)
DECLARE_GLOBAL_DATA_PTR;
@@ -61,37 +56,3 @@ int riscv_get_ipi(int hart, int *pending)
return 0;}
-static int sifive_clint_get_count(struct udevice *dev, u64 *count) -{
*count = readq((void __iomem *)MTIME_REG(dev->priv));return 0;-}
-static const struct timer_ops sifive_clint_ops = {
.get_count = sifive_clint_get_count,-};
-static int sifive_clint_probe(struct udevice *dev) -{
dev->priv = dev_read_addr_ptr(dev);if (!dev->priv)return -EINVAL;return timer_timebase_fallback(dev);-}
-static const struct udevice_id sifive_clint_ids[] = {
{ .compatible = "riscv,clint0" },{ }-};
-U_BOOT_DRIVER(sifive_clint) = {
.name = "sifive_clint",.id = UCLASS_TIMER,.of_match = sifive_clint_ids,.probe = sifive_clint_probe,.ops = &sifive_clint_ops,.flags = DM_FLAG_PRE_RELOC,-}; diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile index eda311f0f5..410ada87b7 100644 --- a/drivers/timer/Makefile +++ b/drivers/timer/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_RENESAS_OSTM_TIMER) += ostm_timer.o obj-$(CONFIG_RISCV_TIMER) += riscv_timer.o obj-$(CONFIG_ROCKCHIP_TIMER) += rockchip_timer.o obj-$(CONFIG_SANDBOX_TIMER) += sandbox_timer.o +obj-$(CONFIG_SIFIVE_CLINT) += sifive_clint_timer.o
no _TIMER suffix ?
I chose to keep the current Kconfig option semantics and naming. This reflects that it enables both an IPI driver and a timer driver.
--Sean
obj-$(CONFIG_STI_TIMER) += sti-timer.o obj-$(CONFIG_STM32_TIMER) += stm32_timer.o obj-$(CONFIG_X86_TSC_TIMER) += tsc_timer.o diff --git a/drivers/timer/sifive_clint_timer.c b/drivers/timer/sifive_clint_timer.c new file mode 100644 index 0000000000..04e85c2564 --- /dev/null +++ b/drivers/timer/sifive_clint_timer.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*
- Copyright (C) 2020, Sean Anderson seanga2@gmail.com
- Copyright (C) 2018, Bin Meng bmeng.cn@gmail.com
- */
+#include <common.h> +#include <clk.h> +#include <dm.h> +#include <timer.h> +#include <asm/io.h> +#include <linux/err.h>
+/* mtime register */ +#define MTIME_REG(base) ((ulong)(base) + 0xbff8)
+static int sifive_clint_get_count(struct udevice *dev, u64 *count) +{
*count = readq((void __iomem *)MTIME_REG(dev->priv));return 0;+}
+static const struct timer_ops sifive_clint_ops = {
.get_count = sifive_clint_get_count,+};
+static int sifive_clint_probe(struct udevice *dev) +{
dev->priv = dev_read_addr_ptr(dev);if (!dev->priv)return -EINVAL;return timer_timebase_fallback(dev);+}
+static const struct udevice_id sifive_clint_ids[] = {
{ .compatible = "riscv,clint0" },{ }+};
+U_BOOT_DRIVER(sifive_clint) = {
.name = "sifive_clint",.id = UCLASS_TIMER,.of_match = sifive_clint_ids,.probe = sifive_clint_probe,.ops = &sifive_clint_ops,.flags = DM_FLAG_PRE_RELOC,+};
2.28.0
LGTM. Other than that, Reviewed-by: Rick Chen rick@andestech.com