diff options
author | Geert Uytterhoeven <geert@linux-m68k.org> | 2016-09-11 08:59:58 (GMT) |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2016-10-04 14:13:57 (GMT) |
commit | 44ce9a9ae977736fe7f470a7b1e506028375165a (patch) | |
tree | 0b6593e1156a19909482f2f2e1fe228079455da2 /arch/mips | |
parent | 39a3b6355329397c30441b62c940bb9cecec0448 (diff) | |
download | linux-44ce9a9ae977736fe7f470a7b1e506028375165a.tar.xz |
MIPS: TXx9: Convert to Common Clock Framework
Replace the custom minimal clock implementation for Toshiba TXx9 by a
basic implementation using the Common Clock Framework.
The only clocks that are provided are those needed by TXx9-specific
drivers ("imbus" and "spi" (TX4938 only)), and their common parent
clock "gbus". Other clocks can be added when needed.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-watchdog@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14239/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/txx9/Kconfig | 2 | ||||
-rw-r--r-- | arch/mips/txx9/generic/setup.c | 70 |
2 files changed, 36 insertions, 36 deletions
diff --git a/arch/mips/txx9/Kconfig b/arch/mips/txx9/Kconfig index 8c337d6..4292347 100644 --- a/arch/mips/txx9/Kconfig +++ b/arch/mips/txx9/Kconfig @@ -20,7 +20,7 @@ config MACH_TXX9 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_BIG_ENDIAN - select HAVE_CLK + select COMMON_CLK config TOSHIBA_JMR3927 bool "Toshiba JMR-TX3927 board" diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index ada92db..a1d98b5 100644 --- a/arch/mips/txx9/generic/setup.c +++ b/arch/mips/txx9/generic/setup.c @@ -15,7 +15,8 @@ #include <linux/interrupt.h> #include <linux/string.h> #include <linux/module.h> -#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> #include <linux/err.h> #include <linux/gpio/driver.h> #include <linux/platform_device.h> @@ -83,40 +84,6 @@ int txx9_ccfg_toeon __initdata; int txx9_ccfg_toeon __initdata = 1; #endif -/* Minimum CLK support */ - -struct clk *clk_get(struct device *dev, const char *id) -{ - if (!strcmp(id, "spi-baseclk")) - return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2); - if (!strcmp(id, "imbus_clk")) - return (struct clk *)((unsigned long)txx9_gbus_clock / 2); - return ERR_PTR(-ENOENT); -} -EXPORT_SYMBOL(clk_get); - -int clk_enable(struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_disable); - -unsigned long clk_get_rate(struct clk *clk) -{ - return (unsigned long)clk; -} -EXPORT_SYMBOL(clk_get_rate); - -void clk_put(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_put); - #define BOARD_VEC(board) extern struct txx9_board_vec board; #include <asm/txx9/boards.h> #undef BOARD_VEC @@ -560,8 +527,41 @@ void __init plat_time_init(void) txx9_board_vec->time_init(); } +static void txx9_clk_init(void) +{ + struct clk_hw *hw; + int error; + + hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock); + if (IS_ERR(hw)) { + error = PTR_ERR(hw); + goto fail; + } + + hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2); + error = clk_hw_register_clkdev(hw, "imbus_clk", NULL); + if (error) + goto fail; + +#ifdef CONFIG_CPU_TX49XX + if (TX4938_REV_PCODE() == 0x4938) { + hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4); + error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL); + if (error) + goto fail; + } +#endif + + return; + +fail: + pr_err("Failed to register clocks: %d\n", error); +} + static int __init _txx9_arch_init(void) { + txx9_clk_init(); + if (txx9_board_vec->arch_init) txx9_board_vec->arch_init(); return 0; |