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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2010-11-26 09:40:22 +0000
committerPaul Mundt <lethal@linux-sh.org>2010-11-29 12:59:22 +0900
commit4bd5d259e451d35380de2fcd1a3510ae22d000a3 (patch)
treef236004a7223a089b360bd33ce9f31340a3268a0 /arch
parente5843341e3ad8ff00332376cd0745026e4b5d45f (diff)
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sh: Add div6_reparent_clks to clock framework for FSI
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/boards/mach-ecovec24/setup.c34
-rw-r--r--arch/sh/include/cpu-sh4/cpu/sh7724.h3
-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-sh7724.c44
3 files changed, 46 insertions, 35 deletions
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index 2eaeb9e5958..f48c492a68d 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -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);
}
diff --git a/arch/sh/include/cpu-sh4/cpu/sh7724.h b/arch/sh/include/cpu-sh4/cpu/sh7724.h
index 4c27b68789b..7eb43599942 100644
--- a/arch/sh/include/cpu-sh4/cpu/sh7724.h
+++ b/arch/sh/include/cpu-sh4/cpu/sh7724.h
@@ -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__ */
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7724.c b/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
index 0fe2e9329cb..271c0b325a9 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
@@ -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;