clk: mvebu: introduce per-clock-gate flags

Clock gates found on MVEBU SoCs get registered by a common function.
To allow specific SoCs to provide tweaks introduce flags to the clock
gate descriptor instead of filling up the common function SoC specific
tweaks.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

diff --git a/drivers/clk/mvebu/clk-gating-ctrl.c b/drivers/clk/mvebu/clk-gating-ctrl.c
index 2f03723..1df6c4e 100644 (file)
--- a/drivers/clk/mvebu/clk-gating-ctrl.c
+++ b/drivers/clk/mvebu/clk-gating-ctrl.c
@@ -28,6 +28,7 @@ struct mvebu_soc_descr {
        const char *name;
        const char *parent;
        int bit_idx;
+       unsigned long flags;
 };
 
 #define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
@@ -88,21 +89,11 @@ static void __init mvebu_clk_gating_setup(
        }
 
        for (n = 0; n < ctrl->num_gates; n++) {
-               u8 flags = 0;
                const char *parent =
                        (descr[n].parent) ? descr[n].parent : default_parent;
-
-               /*
-                * On Armada 370, the DDR clock is a special case: it
-                * isn't taken by any driver, but should anyway be
-                * kept enabled, so we mark it as IGNORE_UNUSED for
-                * now.
-                */
-               if (!strcmp(descr[n].name, "ddr"))
-                       flags |= CLK_IGNORE_UNUSED;
-
                ctrl->gates[n] = clk_register_gate(NULL, descr[n].name, parent,
-                                  flags, base, descr[n].bit_idx, 0, &ctrl->lock);
+                                       descr[n].flags, base, descr[n].bit_idx,
+                                       0, &ctrl->lock);
                WARN_ON(IS_ERR(ctrl->gates[n]));
        }
        of_clk_add_provider(np, mvebu_clk_gating_get_src, ctrl);
@@ -114,99 +105,99 @@ static void __init mvebu_clk_gating_setup(
 
 #ifdef CONFIG_MACH_ARMADA_370
 static const struct mvebu_soc_descr __initconst armada_370_gating_descr[] = {
-       { "audio", NULL, 0 },
-       { "pex0_en", NULL, 1 },
-       { "pex1_en", NULL,  2 },
-       { "ge1", NULL, 3 },
-       { "ge0", NULL, 4 },
-       { "pex0", "pex0_en", 5 },
-       { "pex1", "pex1_en", 9 },
-       { "sata0", NULL, 15 },
-       { "sdio", NULL, 17 },
-       { "tdm", NULL, 25 },
-       { "ddr", NULL, 28 },
-       { "sata1", NULL, 30 },
+       { "audio", NULL, 0, 0 },
+       { "pex0_en", NULL, 1, 0 },
+       { "pex1_en", NULL,  2, 0 },
+       { "ge1", NULL, 3, 0 },
+       { "ge0", NULL, 4, 0 },
+       { "pex0", "pex0_en", 5, 0 },
+       { "pex1", "pex1_en", 9, 0 },
+       { "sata0", NULL, 15, 0 },
+       { "sdio", NULL, 17, 0 },
+       { "tdm", NULL, 25, 0 },
+       { "ddr", NULL, 28, CLK_IGNORE_UNUSED },
+       { "sata1", NULL, 30, 0 },
        { }
 };
 #endif
 
 #ifdef CONFIG_MACH_ARMADA_XP
 static const struct mvebu_soc_descr __initconst armada_xp_gating_descr[] = {
-       { "audio", NULL, 0 },
-       { "ge3", NULL, 1 },
-       { "ge2", NULL,  2 },
-       { "ge1", NULL, 3 },
-       { "ge0", NULL, 4 },
-       { "pex00", NULL, 5 },
-       { "pex01", NULL, 6 },
-       { "pex02", NULL, 7 },
-       { "pex03", NULL, 8 },
-       { "pex10", NULL, 9 },
-       { "pex11", NULL, 10 },
-       { "pex12", NULL, 11 },
-       { "pex13", NULL, 12 },
-       { "bp", NULL, 13 },
-       { "sata0lnk", NULL, 14 },
-       { "sata0", "sata0lnk", 15 },
-       { "lcd", NULL, 16 },
-       { "sdio", NULL, 17 },
-       { "usb0", NULL, 18 },
-       { "usb1", NULL, 19 },
-       { "usb2", NULL, 20 },
-       { "xor0", NULL, 22 },
-       { "crypto", NULL, 23 },
-       { "tdm", NULL, 25 },
-       { "pex20", NULL, 26 },
-       { "pex30", NULL, 27 },
-       { "xor1", NULL, 28 },
-       { "sata1lnk", NULL, 29 },
-       { "sata1", "sata1lnk", 30 },
+       { "audio", NULL, 0, 0 },
+       { "ge3", NULL, 1, 0 },
+       { "ge2", NULL,  2, 0 },
+       { "ge1", NULL, 3, 0 },
+       { "ge0", NULL, 4, 0 },
+       { "pex00", NULL, 5, 0 },
+       { "pex01", NULL, 6, 0 },
+       { "pex02", NULL, 7, 0 },
+       { "pex03", NULL, 8, 0 },
+       { "pex10", NULL, 9, 0 },
+       { "pex11", NULL, 10, 0 },
+       { "pex12", NULL, 11, 0 },
+       { "pex13", NULL, 12, 0 },
+       { "bp", NULL, 13, 0 },
+       { "sata0lnk", NULL, 14, 0 },
+       { "sata0", "sata0lnk", 15, 0 },
+       { "lcd", NULL, 16, 0 },
+       { "sdio", NULL, 17, 0 },
+       { "usb0", NULL, 18, 0 },
+       { "usb1", NULL, 19, 0 },
+       { "usb2", NULL, 20, 0 },
+       { "xor0", NULL, 22, 0 },
+       { "crypto", NULL, 23, 0 },
+       { "tdm", NULL, 25, 0 },
+       { "pex20", NULL, 26, 0 },
+       { "pex30", NULL, 27, 0 },
+       { "xor1", NULL, 28, 0 },
+       { "sata1lnk", NULL, 29, 0 },
+       { "sata1", "sata1lnk", 30, 0 },
        { }
 };
 #endif
 
 #ifdef CONFIG_ARCH_DOVE
 static const struct mvebu_soc_descr __initconst dove_gating_descr[] = {
-       { "usb0", NULL, 0 },
-       { "usb1", NULL, 1 },
-       { "ge", "gephy", 2 },
-       { "sata", NULL, 3 },
-       { "pex0", NULL, 4 },
-       { "pex1", NULL, 5 },
-       { "sdio0", NULL, 8 },
-       { "sdio1", NULL, 9 },
-       { "nand", NULL, 10 },
-       { "camera", NULL, 11 },
-       { "i2s0", NULL, 12 },
-       { "i2s1", NULL, 13 },
-       { "crypto", NULL, 15 },
-       { "ac97", NULL, 21 },
-       { "pdma", NULL, 22 },
-       { "xor0", NULL, 23 },
-       { "xor1", NULL, 24 },
-       { "gephy", NULL, 30 },
+       { "usb0", NULL, 0, 0 },
+       { "usb1", NULL, 1, 0 },
+       { "ge", "gephy", 2, 0 },
+       { "sata", NULL, 3, 0 },
+       { "pex0", NULL, 4, 0 },
+       { "pex1", NULL, 5, 0 },
+       { "sdio0", NULL, 8, 0 },
+       { "sdio1", NULL, 9, 0 },
+       { "nand", NULL, 10, 0 },
+       { "camera", NULL, 11, 0 },
+       { "i2s0", NULL, 12, 0 },
+       { "i2s1", NULL, 13, 0 },
+       { "crypto", NULL, 15, 0 },
+       { "ac97", NULL, 21, 0 },
+       { "pdma", NULL, 22, 0 },
+       { "xor0", NULL, 23, 0 },
+       { "xor1", NULL, 24, 0 },
+       { "gephy", NULL, 30, 0 },
        { }
 };
 #endif
 
 #ifdef CONFIG_ARCH_KIRKWOOD
 static const struct mvebu_soc_descr __initconst kirkwood_gating_descr[] = {
-       { "ge0", NULL, 0 },
-       { "pex0", NULL, 2 },
-       { "usb0", NULL, 3 },
-       { "sdio", NULL, 4 },
-       { "tsu", NULL, 5 },
-       { "runit", NULL, 7 },
-       { "xor0", NULL, 8 },
-       { "audio", NULL, 9 },
-       { "powersave", "cpuclk", 11 },
-       { "sata0", NULL, 14 },
-       { "sata1", NULL, 15 },
-       { "xor1", NULL, 16 },
-       { "crypto", NULL, 17 },
-       { "pex1", NULL, 18 },
-       { "ge1", NULL, 19 },
-       { "tdm", NULL, 20 },
+       { "ge0", NULL, 0, 0 },
+       { "pex0", NULL, 2, 0 },
+       { "usb0", NULL, 3, 0 },
+       { "sdio", NULL, 4, 0 },
+       { "tsu", NULL, 5, 0 },
+       { "runit", NULL, 7, 0 },
+       { "xor0", NULL, 8, 0 },
+       { "audio", NULL, 9, 0 },
+       { "powersave", "cpuclk", 11, 0 },
+       { "sata0", NULL, 14, 0 },
+       { "sata1", NULL, 15, 0 },
+       { "xor1", NULL, 16, 0 },
+       { "crypto", NULL, 17, 0 },
+       { "pex1", NULL, 18, 0 },
+       { "ge1", NULL, 19, 0 },
+       { "tdm", NULL, 20, 0 },
        { }
 };
 #endif