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Wysocki" , Len Brown , Thomas Gleixner , Marc Zyngier , Daniel Lezcano , Jonathan Corbet Subject: [PATCH 16/24] RISC-V: ACPI: clocksource/timer-riscv: Add ACPI support Date: Mon, 30 Jan 2023 23:52:17 +0530 Message-Id: <20230130182225.2471414-17-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20230130182225.2471414-1-sunilvl@ventanamicro.com> References: <20230130182225.2471414-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230130_102348_753979_17EE4A19 X-CRM114-Status: UNSURE ( 9.27 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anup Patel , linux-doc@vger.kernel.org, Atish Patra , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-riscv@lists.infradead.org, Andrew Jones Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org timer-riscv driver needs to get the timebase-frequency from RISC-V Hart Capabilities Table (RHCT) on ACPI platforms. Add support to read the information from RHCT. Signed-off-by: Sunil V L --- drivers/clocksource/timer-riscv.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index 4016c065a01c..8079666753a6 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -10,6 +10,7 @@ #define pr_fmt(fmt) "riscv-timer: " fmt +#include #include #include #include @@ -198,3 +199,11 @@ static int __init riscv_timer_init_dt(struct device_node *n) } TIMER_OF_DECLARE(riscv_timer, "riscv", riscv_timer_init_dt); + +#ifdef CONFIG_ACPI +static int __init riscv_timer_acpi_init(struct acpi_table_header *table) +{ + return riscv_timer_init_common(); +} +TIMER_ACPI_DECLARE(aclint_mtimer, ACPI_SIG_RHCT, riscv_timer_acpi_init); +#endif