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author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2020-07-22 10:38:22 +0300 |
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committer | Stephen Boyd <sboyd@kernel.org> | 2020-07-24 02:19:08 -0700 |
commit | c57aaaa28cf1a123c0029a36361a809eae2b1960 (patch) | |
tree | e86f6ba0836d1fae301984f33961061a49cb36c3 /drivers/clk/at91/clk-programmable.c | |
parent | clk: at91: clk-peripheral: add support for changeable parent rate (diff) | |
download | wireguard-linux-c57aaaa28cf1a123c0029a36361a809eae2b1960.tar.xz wireguard-linux-c57aaaa28cf1a123c0029a36361a809eae2b1960.zip |
clk: at91: clk-programmable: add mux_table option
Add mux table option. This is necessary for IP versions that has
gaps in the range of available clock sources (e.g. SAMA7G5).
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1595403506-8209-15-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/at91/clk-programmable.c')
-rw-r--r-- | drivers/clk/at91/clk-programmable.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c index 8ee66fbee3d9..fcf8f6a1c2c6 100644 --- a/drivers/clk/at91/clk-programmable.c +++ b/drivers/clk/at91/clk-programmable.c @@ -21,6 +21,7 @@ struct clk_programmable { struct clk_hw hw; struct regmap *regmap; + u32 *mux_table; u8 id; const struct clk_programmable_layout *layout; }; @@ -108,6 +109,9 @@ static int clk_programmable_set_parent(struct clk_hw *hw, u8 index) if (layout->have_slck_mck) mask |= AT91_PMC_CSSMCK_MCK; + if (prog->mux_table) + pckr = clk_mux_index_to_val(prog->mux_table, 0, index); + if (index > layout->css_mask) { if (index > PROG_MAX_RM9200_CSS && !layout->have_slck_mck) return -EINVAL; @@ -134,6 +138,9 @@ static u8 clk_programmable_get_parent(struct clk_hw *hw) if (layout->have_slck_mck && (pckr & AT91_PMC_CSSMCK_MCK) && !ret) ret = PROG_MAX_RM9200_CSS + 1; + if (prog->mux_table) + ret = clk_mux_val_to_index(&prog->hw, prog->mux_table, 0, ret); + return ret; } @@ -182,7 +189,8 @@ struct clk_hw * __init at91_clk_register_programmable(struct regmap *regmap, const char *name, const char **parent_names, u8 num_parents, u8 id, - const struct clk_programmable_layout *layout) + const struct clk_programmable_layout *layout, + u32 *mux_table) { struct clk_programmable *prog; struct clk_hw *hw; @@ -206,6 +214,7 @@ at91_clk_register_programmable(struct regmap *regmap, prog->layout = layout; prog->hw.init = &init; prog->regmap = regmap; + prog->mux_table = mux_table; hw = &prog->hw; ret = clk_hw_register(NULL, &prog->hw); |