[PATCH v2 08/15] clk: sunxi-ng: Add divider
From: Jean-Francois Moine <hidden>
Date: 2016-06-09 07:40:47
Also in:
linux-clk, linux-devicetree, lkml
On Tue, 7 Jun 2016 22:41:47 +0200 Maxime Ripard [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add support for the various dividers (linear, table or pow-of-two based) found in the CCU. Signed-off-by: Maxime Ripard <redacted> --- drivers/clk/sunxi-ng/Makefile | 1 + drivers/clk/sunxi-ng/ccu_div.c | 136 +++++++++++++++++++++++++++++++++++++++++ drivers/clk/sunxi-ng/ccu_div.h | 135 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 272 insertions(+) create mode 100644 drivers/clk/sunxi-ng/ccu_div.c create mode 100644 drivers/clk/sunxi-ng/ccu_div.hdiff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile index c47cbd309d59..67a2559fe283 100644 --- a/drivers/clk/sunxi-ng/Makefile +++ b/drivers/clk/sunxi-ng/Makefile@@ -3,6 +3,7 @@ obj-y += ccu_reset.o obj-y += ccu_frac.o +obj-y += ccu_div.o obj-y += ccu_fixed_factor.o obj-y += ccu_gate.o obj-y += ccu_mux.odiff --git a/drivers/clk/sunxi-ng/ccu_div.c b/drivers/clk/sunxi-ng/ccu_div.c new file mode 100644 index 000000000000..8659b4cb6c20 --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu_div.c
[snip]
quoted hunk ↗ jump to hunk
diff --git a/drivers/clk/sunxi-ng/ccu_div.h b/drivers/clk/sunxi-ng/ccu_div.h new file mode 100644 index 000000000000..5edbdc1a98c8 --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu_div.h@@ -0,0 +1,135 @@ +/* + * Copyright (c) 2016 Maxime Ripard. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#ifndef _CCU_DIV_H_ +#define _CCU_DIV_H_ + +#include <linux/clk-provider.h> + +#include "ccu_common.h" +#include "ccu_mux.h" + +struct _ccu_div { + u8 shift; + u8 width; + + u32 flags; + + struct clk_div_table *table; +}; + +#define _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, _table, _flags) \ + { \ + .shift = _shift, \ + .width = _width, \ + .flags = _flags, \ + .table = _table, \ + } + +#define _SUNXI_CCU_DIV_FLAGS(_shift, _width, _flags) \ + _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, NULL, _flags) + +#define _SUNXI_CCU_DIV_TABLE(_shift, _width, _table) \ + _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, _table, 0) + +#define _SUNXI_CCU_DIV(_shift, _width) \ + _SUNXI_CCU_DIV_TABLE_FLAGS(_shift, _width, NULL, 0) + +struct ccu_div { + u32 enable; + + struct _ccu_div div; + struct ccu_mux_internal mux; + struct ccu_common common; +}; + +#define SUNXI_CCU_DIV_TABLE_WITH_GATE(_struct, _name, _parent, _reg, \ + _shift, _width, \ + _table, _gate, _flags) \ + struct ccu_div _struct = { \
The gate is missing .enable = _gate, (I was really afraid when I saw 217?C as the board temperature!)
+ .div = _SUNXI_CCU_DIV_TABLE(_shift, _width, \
+ _table), \
+ .common = { \
+ .reg = _reg, \
+ .features = CCU_FEATURE_GATE, \
+ .hw.init = SUNXI_HW_INIT(_name, \
+ _parent, \
+ &ccu_div_ops, \
+ _flags), \
+ } \
+ }
+
+
+#define SUNXI_CCU_DIV_TABLE(_struct, _name, _parent, _reg, \
+ _shift, _width, \
+ _table, _flags) \[snip] -- Ken ar c'henta? | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/