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author | Ralph Siemsen <ralph.siemsen@linaro.org> | 2023-03-02 00:55:17 +0300 |
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committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-03-10 19:07:53 +0300 |
commit | a1aae0a6b122300d057e30487fc8291d3cd730ca (patch) | |
tree | 40c2f6b2f5c8f1bcf7d1fb320803c40994eb39c7 /drivers/clk/renesas | |
parent | 85af88b8f7d606be8a9b89fcda61a5df28a2028d (diff) | |
download | linux-a1aae0a6b122300d057e30487fc8291d3cd730ca.tar.xz |
clk: renesas: r9a06g032: Improve readability
Several small readability improvements:
- Move enum gate_type definition up and add comments to each field.
- Use this enum instead of generic uint32_t type in clock desc struct.
- Tidy up bitfield syntax and comments in clock desc structure
- Reformat macros for building clock desc to have one assignment per line
There is no functional change.
Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/clk/renesas')
-rw-r--r-- | drivers/clk/renesas/r9a06g032-clocks.c | 121 |
1 files changed, 80 insertions, 41 deletions
diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index 087146f2ee06..cc479d95ef55 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -34,64 +34,103 @@ struct r9a06g032_gate { scon, mirack, mistat; }; +enum gate_type { + K_GATE = 0, /* gate which enable/disable */ + K_FFC, /* fixed factor clock */ + K_DIV, /* divisor */ + K_BITSEL, /* special for UARTs */ + K_DUALGATE /* special for UARTs */ +}; + /* This is used to describe a clock for instantiation */ struct r9a06g032_clkdesc { const char *name; - uint32_t managed: 1; - uint32_t type: 3; - uint32_t index: 8; - uint32_t source : 8; /* source index + 1 (0 == none) */ - /* these are used to populate the bitsel struct */ + uint32_t managed:1; + enum gate_type type:3; + uint32_t index:8; + uint32_t source:8; /* source index + 1 (0 == none) */ union { + /* type = K_GATE */ struct r9a06g032_gate gate; - /* for dividers */ + /* type = K_DIV */ struct { - unsigned int div_min : 10, div_max : 10, reg: 10; + unsigned int div_min:10, div_max:10, reg:10; u16 div_table[4]; }; - /* For fixed-factor ones */ + /* type = K_FFC */ struct { u16 div, mul; }; - /* for dual gate */ + /* type = K_DUALGATE */ struct { - uint16_t group : 1; + uint16_t group:1; u16 sel, g1, r1, g2, r2; } dual; }; }; -#define I_GATE(_clk, _rst, _rdy, _midle, _scon, _mirack, _mistat) \ - { .gate = _clk, .reset = _rst, \ - .ready = _rdy, .midle = _midle, \ - .scon = _scon, .mirack = _mirack, .mistat = _mistat } -#define D_GATE(_idx, _n, _src, ...) \ - { .type = K_GATE, .index = R9A06G032_##_idx, \ - .source = 1 + R9A06G032_##_src, .name = _n, \ - .gate = I_GATE(__VA_ARGS__) } -#define D_MODULE(_idx, _n, _src, ...) \ - { .type = K_GATE, .index = R9A06G032_##_idx, \ - .source = 1 + R9A06G032_##_src, .name = _n, \ - .managed = 1, .gate = I_GATE(__VA_ARGS__) } -#define D_ROOT(_idx, _n, _mul, _div) \ - { .type = K_FFC, .index = R9A06G032_##_idx, .name = _n, \ - .div = _div, .mul = _mul } -#define D_FFC(_idx, _n, _src, _div) \ - { .type = K_FFC, .index = R9A06G032_##_idx, \ - .source = 1 + R9A06G032_##_src, .name = _n, \ - .div = _div, .mul = 1} -#define D_DIV(_idx, _n, _src, _reg, _min, _max, ...) \ - { .type = K_DIV, .index = R9A06G032_##_idx, \ - .source = 1 + R9A06G032_##_src, .name = _n, \ - .reg = _reg, .div_min = _min, .div_max = _max, \ - .div_table = { __VA_ARGS__ } } -#define D_UGATE(_idx, _n, _src, _g, _g1, _r1, _g2, _r2) \ - { .type = K_DUALGATE, .index = R9A06G032_##_idx, \ - .source = 1 + R9A06G032_##_src, .name = _n, \ - .dual = { .group = _g, \ - .g1 = _g1, .r1 = _r1, .g2 = _g2, .r2 = _r2 }, } - -enum { K_GATE = 0, K_FFC, K_DIV, K_BITSEL, K_DUALGATE }; +#define I_GATE(_clk, _rst, _rdy, _midle, _scon, _mirack, _mistat) { \ + .gate = _clk, \ + .reset = _rst, \ + .ready = _rdy, \ + .midle = _midle, \ + .scon = _scon, \ + .mirack = _mirack, \ + .mistat = _mistat \ +} +#define D_GATE(_idx, _n, _src, ...) { \ + .type = K_GATE, \ + .index = R9A06G032_##_idx, \ + .source = 1 + R9A06G032_##_src, \ + .name = _n, \ + .gate = I_GATE(__VA_ARGS__) \ +} +#define D_MODULE(_idx, _n, _src, ...) { \ + .type = K_GATE, \ + .index = R9A06G032_##_idx, \ + .source = 1 + R9A06G032_##_src, \ + .name = _n, \ + .managed = 1, \ + .gate = I_GATE(__VA_ARGS__) \ +} +#define D_ROOT(_idx, _n, _mul, _div) { \ + .type = K_FFC, \ + .index = R9A06G032_##_idx, \ + .name = _n, \ + .div = _div, \ + .mul = _mul \ +} +#define D_FFC(_idx, _n, _src, _div) { \ + .type = K_FFC, \ + .index = R9A06G032_##_idx, \ + .source = 1 + R9A06G032_##_src, \ + .name = _n, \ + .div = _div, \ + .mul = 1 \ +} +#define D_DIV(_idx, _n, _src, _reg, _min, _max, ...) { \ + .type = K_DIV, \ + .index = R9A06G032_##_idx, \ + .source = 1 + R9A06G032_##_src, \ + .name = _n, \ + .reg = _reg, \ + .div_min = _min, \ + .div_max = _max, \ + .div_table = { __VA_ARGS__ } \ +} +#define D_UGATE(_idx, _n, _src, _g, _g1, _r1, _g2, _r2) { \ + .type = K_DUALGATE, \ + .index = R9A06G032_##_idx, \ + .source = 1 + R9A06G032_##_src, \ + .name = _n, \ + .dual = { \ + .group = _g, \ + .g1 = _g1, \ + .r1 = _r1, \ + .g2 = _g2, \ + .r2 = _r2 \ + }, \ +} /* Internal clock IDs */ #define R9A06G032_CLKOUT 0 |