sh: Add div6_reparent_clks to clock framework for FSI
Kuninori Morimoto [Fri, 26 Nov 2010 09:40:22 +0000 (09:40 +0000)]
Current clk_ops doesn't support .init which
is used to select external clock on ecovec
without CONFIG_SH_CLK_CPG_LEGACY.
To solve this problem, this patch add div6_reparent_clks
to clock-sh7724.
This patch solve compile error too.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-ecovec24/setup.c
arch/sh/include/cpu-sh4/cpu/sh7724.h
arch/sh/kernel/cpu/sh4a/clock-sh7724.c

index 2eaeb9e..f48c492 100644 (file)
@@ -720,32 +720,6 @@ static struct platform_device camera_devices[] = {
 };
 
 /* FSI */
-/*
- * FSI-B use external clock which came from da7210.
- * So, we should change parent of fsi
- */
-#define FCLKBCR                0xa415000c
-static void fsimck_init(struct clk *clk)
-{
-       u32 status = __raw_readl(clk->enable_reg);
-
-       /* use external clock */
-       status &= ~0x000000ff;
-       status |= 0x00000080;
-
-       __raw_writel(status, clk->enable_reg);
-}
-
-static struct clk_ops fsimck_clk_ops = {
-       .init = fsimck_init,
-};
-
-static struct clk fsimckb_clk = {
-       .ops            = &fsimck_clk_ops,
-       .enable_reg     = (void __iomem *)FCLKBCR,
-       .rate           = 0, /* unknown */
-};
-
 static struct sh_fsi_platform_info fsi_info = {
        .portb_flags = SH_FSI_BRS_INV |
                       SH_FSI_OUT_SLAVE_MODE |
@@ -1264,10 +1238,10 @@ static int __init arch_setup(void)
        /* change parent of FSI B */
        clk = clk_get(NULL, "fsib_clk");
        if (!IS_ERR(clk)) {
-               clk_register(&fsimckb_clk);
-               clk_set_parent(clk, &fsimckb_clk);
-               clk_set_rate(clk, 11000);
-               clk_set_rate(&fsimckb_clk, 11000);
+               /* 48kHz dummy clock was used to make sure 1/1 divide */
+               clk_set_rate(&sh7724_fsimckb_clk, 48000);
+               clk_set_parent(clk, &sh7724_fsimckb_clk);
+               clk_set_rate(clk, 48000);
                clk_put(clk);
        }
 
index 4c27b68..7eb4359 100644 (file)
@@ -303,4 +303,7 @@ enum {
        SHDMA_SLAVE_SDHI1_RX,
 };
 
+extern struct clk sh7724_fsimcka_clk;
+extern struct clk sh7724_fsimckb_clk;
+
 #endif /* __ASM_SH7724_H__ */
index 0fe2e93..271c0b3 100644 (file)
@@ -111,12 +111,21 @@ static struct clk div3_clk = {
        .parent         = &pll_clk,
 };
 
+/* External input clock (pin name: FSIMCKA/FSIMCKB ) */
+struct clk sh7724_fsimcka_clk = {
+};
+
+struct clk sh7724_fsimckb_clk = {
+};
+
 static struct clk *main_clks[] = {
        &r_clk,
        &extal_clk,
        &fll_clk,
        &pll_clk,
        &div3_clk,
+       &sh7724_fsimcka_clk,
+       &sh7724_fsimckb_clk,
 };
 
 static void div4_kick(struct clk *clk)
@@ -154,16 +163,38 @@ struct clk div4_clks[DIV4_NR] = {
        [DIV4_M1] = DIV4(FRQCRB, 4, 0x2f7c, CLK_ENABLE_ON_INIT),
 };
 
-enum { DIV6_V, DIV6_FA, DIV6_FB, DIV6_I, DIV6_S, DIV6_NR };
+enum { DIV6_V, DIV6_I, DIV6_S, DIV6_NR };
 
 static struct clk div6_clks[DIV6_NR] = {
        [DIV6_V] = SH_CLK_DIV6(&div3_clk, VCLKCR, 0),
-       [DIV6_FA] = SH_CLK_DIV6(&div3_clk, FCLKACR, 0),
-       [DIV6_FB] = SH_CLK_DIV6(&div3_clk, FCLKBCR, 0),
        [DIV6_I] = SH_CLK_DIV6(&div3_clk, IRDACLKCR, 0),
        [DIV6_S] = SH_CLK_DIV6(&div3_clk, SPUCLKCR, CLK_ENABLE_ON_INIT),
 };
 
+enum { DIV6_FA, DIV6_FB, DIV6_REPARENT_NR };
+
+/* Indices are important - they are the actual src selecting values */
+static struct clk *fclkacr_parent[] = {
+       [0] = &div3_clk,
+       [1] = NULL,
+       [2] = &sh7724_fsimcka_clk,
+       [3] = NULL,
+};
+
+static struct clk *fclkbcr_parent[] = {
+       [0] = &div3_clk,
+       [1] = NULL,
+       [2] = &sh7724_fsimckb_clk,
+       [3] = NULL,
+};
+
+static struct clk div6_reparent_clks[DIV6_REPARENT_NR] = {
+       [DIV6_FA] = SH_CLK_DIV6_EXT(&div3_clk, FCLKACR, 0,
+                                     fclkacr_parent, ARRAY_SIZE(fclkacr_parent), 6, 2),
+       [DIV6_FB] = SH_CLK_DIV6_EXT(&div3_clk, FCLKBCR, 0,
+                                     fclkbcr_parent, ARRAY_SIZE(fclkbcr_parent), 6, 2),
+};
+
 static struct clk mstp_clks[HWBLK_NR] = {
        SH_HWBLK_CLK(HWBLK_TLB, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
        SH_HWBLK_CLK(HWBLK_IC, &div4_clks[DIV4_I], CLK_ENABLE_ON_INIT),
@@ -240,8 +271,8 @@ static struct clk_lookup lookups[] = {
 
        /* DIV6 clocks */
        CLKDEV_CON_ID("video_clk", &div6_clks[DIV6_V]),
-       CLKDEV_CON_ID("fsia_clk", &div6_clks[DIV6_FA]),
-       CLKDEV_CON_ID("fsib_clk", &div6_clks[DIV6_FB]),
+       CLKDEV_CON_ID("fsia_clk", &div6_reparent_clks[DIV6_FA]),
+       CLKDEV_CON_ID("fsib_clk", &div6_reparent_clks[DIV6_FB]),
        CLKDEV_CON_ID("irda_clk", &div6_clks[DIV6_I]),
        CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_S]),
 
@@ -376,6 +407,9 @@ int __init arch_clk_init(void)
                ret = sh_clk_div6_register(div6_clks, DIV6_NR);
 
        if (!ret)
+               ret = sh_clk_div6_reparent_register(div6_reparent_clks, DIV6_REPARENT_NR);
+
+       if (!ret)
                ret = sh_hwblk_clk_register(mstp_clks, HWBLK_NR);
 
        return ret;