linux-kernel - [PATCH v2 1/7] mips: ar7: convert to clkdev

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Message-Id: <20210608152214.1231666-2-arnd@kernel.org>
Date:   Tue,  8 Jun 2021 17:22:08 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     linux-clk@...r.kernel.org, Stephen Boyd <sboyd@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Dmitry Osipenko <digetx@...il.com>,
        Florian Fainelli <florian@...nwrt.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        John Crispin <john@...ozen.org>,
        Jonas Gorski <jonas.gorski@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Michael Turquette <mturquette@...libre.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/7] mips: ar7: convert to clkdev_lookup

From: Arnd Bergmann <arnd@...db.de>

ar7 is one of only two platforms that provide the clock interface but
implement a custom version of the clkdev_lookup code.

Change this to use the generic version instead.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/mips/Kconfig     |  1 +
 arch/mips/ar7/clock.c | 31 +++++++++++--------------------
 2 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ed51970c08e7..1cc03a7652a9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -215,6 +215,7 @@ config AR7
 	select SYS_SUPPORTS_ZBOOT_UART16550
 	select GPIOLIB
 	select VLYNQ
+	select CLKDEV_LOOKUP
 	select HAVE_LEGACY_CLK
 	help
 	  Support for the Texas Instruments AR7 System-on-a-Chip
diff --git a/arch/mips/ar7/clock.c b/arch/mips/ar7/clock.c
index 95def949c971..e8648e3eb27b 100644
--- a/arch/mips/ar7/clock.c
+++ b/arch/mips/ar7/clock.c
@@ -13,6 +13,7 @@
 #include <linux/gcd.h>
 #include <linux/io.h>
 #include <linux/err.h>
+#include <linux/clkdev.h>
 #include <linux/clk.h>
 
 #include <asm/addrspace.h>
@@ -424,27 +425,15 @@ unsigned long clk_get_rate(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_rate);
 
-struct clk *clk_get(struct device *dev, const char *id)
-{
-	if (!strcmp(id, "bus"))
-		return &bus_clk;
+static struct clk_lookup ar7_clkdev_table[] = {
+	CLKDEV_INIT(NULL, "bus", &bus_clk),
 	/* cpmac and vbus share the same rate */
-	if (!strcmp(id, "cpmac"))
-		return &vbus_clk;
-	if (!strcmp(id, "cpu"))
-		return &cpu_clk;
-	if (!strcmp(id, "dsp"))
-		return &dsp_clk;
-	if (!strcmp(id, "vbus"))
-		return &vbus_clk;
-	return ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
+	CLKDEV_INIT("cpmac.0", "cpmac", &vbus_clk),
+	CLKDEV_INIT("cpmac.1", "cpmac", &vbus_clk),
+	CLKDEV_INIT(NULL, "cpu", &cpu_clk),
+	CLKDEV_INIT(NULL, "dsp", &dsp_clk),
+	CLKDEV_INIT(NULL, "vbus", &vbus_clk),
+};
 
 void __init ar7_init_clocks(void)
 {
@@ -462,6 +451,8 @@ void __init ar7_init_clocks(void)
 	}
 	/* adjust vbus clock rate */
 	vbus_clk.rate = bus_clk.rate / 2;
+
+	clkdev_add_table(ar7_clkdev_table, ARRAY_SIZE(ar7_clkdev_table));
 }
 
 /* dummy functions, should not be called */
-- 
2.29.2