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| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2014-05-19 18:43:26 +0200 |
|---|---|---|
| committer | Mike Turquette <mturquette@linaro.org> | 2014-05-29 09:30:18 -0700 |
| commit | 6f9ba9b44724888c5419289e790077ab1621c62d (patch) | |
| tree | 8225edf096b8f92f5e392656a3e73cc6f0eed6d2 /drivers/clk/berlin/berlin2-div.h | |
| parent | cf8de5a7f870c7e3940d888e2c6ce6988aeb26c6 (diff) | |
| download | linux-6f9ba9b44724888c5419289e790077ab1621c62d.tar.gz linux-6f9ba9b44724888c5419289e790077ab1621c62d.tar.bz2 linux-6f9ba9b44724888c5419289e790077ab1621c62d.zip | |
clk: berlin: add driver for BG2x complex divider cells
This is a driver for the complex divider cells found on Marvell Berlin2
SoCs. The cells come in two flavors: single register cells and shared
register cells.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/berlin/berlin2-div.h')
| -rw-r--r-- | drivers/clk/berlin/berlin2-div.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/clk/berlin/berlin2-div.h b/drivers/clk/berlin/berlin2-div.h new file mode 100644 index 000000000000..15e3384f3116 --- /dev/null +++ b/drivers/clk/berlin/berlin2-div.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2014 Marvell Technology Group Ltd. + * + * Alexandre Belloni <alexandre.belloni@free-electrons.com> + * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef __BERLIN2_DIV_H +#define __BERLIN2_DIV_H + +struct clk; + +#define BERLIN2_DIV_HAS_GATE BIT(0) +#define BERLIN2_DIV_HAS_MUX BIT(1) + +#define BERLIN2_PLL_SELECT(_off, _sh) \ + .pll_select_offs = _off, \ + .pll_select_shift = _sh + +#define BERLIN2_PLL_SWITCH(_off, _sh) \ + .pll_switch_offs = _off, \ + .pll_switch_shift = _sh + +#define BERLIN2_DIV_SELECT(_off, _sh) \ + .div_select_offs = _off, \ + .div_select_shift = _sh + +#define BERLIN2_DIV_SWITCH(_off, _sh) \ + .div_switch_offs = _off, \ + .div_switch_shift = _sh + +#define BERLIN2_DIV_D3SWITCH(_off, _sh) \ + .div3_switch_offs = _off, \ + .div3_switch_shift = _sh + +#define BERLIN2_DIV_GATE(_off, _sh) \ + .gate_offs = _off, \ + .gate_shift = _sh + +#define BERLIN2_SINGLE_DIV(_off) \ + BERLIN2_DIV_GATE(_off, 0), \ + BERLIN2_PLL_SELECT(_off, 1), \ + BERLIN2_PLL_SWITCH(_off, 4), \ + BERLIN2_DIV_SWITCH(_off, 5), \ + BERLIN2_DIV_D3SWITCH(_off, 6), \ + BERLIN2_DIV_SELECT(_off, 7) + +struct berlin2_div_map { + u16 pll_select_offs; + u16 pll_switch_offs; + u16 div_select_offs; + u16 div_switch_offs; + u16 div3_switch_offs; + u16 gate_offs; + u8 pll_select_shift; + u8 pll_switch_shift; + u8 div_select_shift; + u8 div_switch_shift; + u8 div3_switch_shift; + u8 gate_shift; +}; + +struct berlin2_div_data { + const char *name; + const u8 *parent_ids; + int num_parents; + unsigned long flags; + struct berlin2_div_map map; + u8 div_flags; +}; + +struct clk * __init +berlin2_div_register(const struct berlin2_div_map *map, + void __iomem *base, const char *name, u8 div_flags, + const char **parent_names, int num_parents, + unsigned long flags, spinlock_t *lock); + +#endif /* __BERLIN2_DIV_H */ |