sh: Update SH-X3 subtype for clkdev lookups.

Rewrite the SH-X3 proto CPU clock framework for clkdev.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 146 insertions, 85 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 2284215981e..e46b61d64c7 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -570,7 +570,7 @@ config SH_CLK_CPG
 config SH_CLK_CPG_LEGACY
 	depends on SH_CLK_CPG
 	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
-		      !CPU_SUBTYPE_SH7786 && !CPU_SUBTYPE_SH7757
+		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757
 
 config SH_CLK_MD
 	int "CPU Mode Pin Setting"
diff --git a/arch/sh/include/cpu-sh4/cpu/freq.h b/arch/sh/include/cpu-sh4/cpu/freq.h
index e1e90960ee9..cffd25ed024 100644
--- a/arch/sh/include/cpu-sh4/cpu/freq.h
+++ b/arch/sh/include/cpu-sh4/cpu/freq.h
@@ -56,7 +56,9 @@
 #define FRQCR1			0xffc40004
 #define FRQMR1			0xffc40014
 #elif defined(CONFIG_CPU_SUBTYPE_SHX3)
-#define FRQCR			0xffc00014
+#define FRQCR0			0xffc00000
+#define FRQCR1			0xffc00004
+#define FRQMR1			0xffc00014
 #else
 #define FRQCR			0xffc00000
 #define FRQCR_PSTBY		0x0200
diff --git a/arch/sh/kernel/cpu/sh4a/clock-shx3.c b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
index 236a6282d77..4f70df6b616 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
@@ -5,7 +5,7 @@
  *
  *  Copyright (C) 2006-2007  Renesas Technology Corp.
  *  Copyright (C) 2006-2007  Renesas Solutions Corp.
- *  Copyright (C) 2006-2007  Paul Mundt
+ *  Copyright (C) 2006-2010  Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -18,120 +18,179 @@
 #include <asm/clock.h>
 #include <asm/freq.h>
 
-static int ifc_divisors[] = { 1, 2, 4 ,6 };
-static int bfc_divisors[] = { 1, 1, 1, 1, 1, 12, 16, 18, 24, 32, 36, 48 };
-static int pfc_divisors[] = { 1, 1, 1, 1, 1, 1, 1, 18, 24, 32, 36, 48 };
-static int cfc_divisors[] = { 1, 1, 4, 6 };
-
-#define IFC_POS		28
-#define IFC_MSK		0x0003
-#define BFC_MSK		0x000f
-#define PFC_MSK		0x000f
-#define CFC_MSK		0x0003
-#define BFC_POS		16
-#define PFC_POS		0
-#define CFC_POS		20
-
-static void master_clk_init(struct clk *clk)
-{
-	clk->rate *= pfc_divisors[(__raw_readl(FRQCR) >> PFC_POS) & PFC_MSK];
-}
-
-static struct clk_ops shx3_master_clk_ops = {
-	.init		= master_clk_init,
+/*
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
+ */
+static struct clk extal_clk = {
+	.rate		= 16666666,
 };
 
-static unsigned long module_clk_recalc(struct clk *clk)
+static unsigned long pll_recalc(struct clk *clk)
 {
-	int idx = ((__raw_readl(FRQCR) >> PFC_POS) & PFC_MSK);
-	return clk->parent->rate / pfc_divisors[idx];
+	/* PLL1 has a fixed x72 multiplier.  */
+	return clk->parent->rate * 72;
 }
 
-static struct clk_ops shx3_module_clk_ops = {
-	.recalc		= module_clk_recalc,
+static struct clk_ops pll_clk_ops = {
+	.recalc		= pll_recalc,
 };
 
-static unsigned long bus_clk_recalc(struct clk *clk)
-{
-	int idx = ((__raw_readl(FRQCR) >> BFC_POS) & BFC_MSK);
-	return clk->parent->rate / bfc_divisors[idx];
-}
+static struct clk pll_clk = {
+	.ops		= &pll_clk_ops,
+	.parent		= &extal_clk,
+	.flags		= CLK_ENABLE_ON_INIT,
+};
 
-static struct clk_ops shx3_bus_clk_ops = {
-	.recalc		= bus_clk_recalc,
+static struct clk *clks[] = {
+	&extal_clk,
+	&pll_clk,
 };
 
-static unsigned long cpu_clk_recalc(struct clk *clk)
-{
-	int idx = ((__raw_readl(FRQCR) >> IFC_POS) & IFC_MSK);
-	return clk->parent->rate / ifc_divisors[idx];
-}
+static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18,
+			       24, 32, 36, 48 };
 
-static struct clk_ops shx3_cpu_clk_ops = {
-	.recalc		= cpu_clk_recalc,
+static struct clk_div_mult_table div4_div_mult_table = {
+	.divisors = div2,
+	.nr_divisors = ARRAY_SIZE(div2),
 };
 
-static struct clk_ops *shx3_clk_ops[] = {
-	&shx3_master_clk_ops,
-	&shx3_module_clk_ops,
-	&shx3_bus_clk_ops,
-	&shx3_cpu_clk_ops,
+static struct clk_div4_table div4_table = {
+	.div_mult_table = &div4_div_mult_table,
 };
 
-void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
-{
-	if (idx < ARRAY_SIZE(shx3_clk_ops))
-		*ops = shx3_clk_ops[idx];
-}
+enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_SHA, DIV4_P, DIV4_NR };
 
-static unsigned long shyway_clk_recalc(struct clk *clk)
-{
-	int idx = ((__raw_readl(FRQCR) >> CFC_POS) & CFC_MSK);
-	return clk->parent->rate / cfc_divisors[idx];
-}
+#define DIV4(_bit, _mask, _flags) \
+  SH_CLK_DIV4(&pll_clk, FRQMR1, _bit, _mask, _flags)
 
-static struct clk_ops shx3_shyway_clk_ops = {
-	.recalc		= shyway_clk_recalc,
+struct clk div4_clks[DIV4_NR] = {
+	[DIV4_P] = DIV4(0, 0x0f80, 0),
+	[DIV4_SHA] = DIV4(4, 0x0ff0, 0),
+	[DIV4_DDR] = DIV4(12, 0x000c, CLK_ENABLE_ON_INIT),
+	[DIV4_B] = DIV4(16, 0x0fe0, CLK_ENABLE_ON_INIT),
+	[DIV4_SH] = DIV4(20, 0x000c, CLK_ENABLE_ON_INIT),
+	[DIV4_I] = DIV4(28, 0x000e, CLK_ENABLE_ON_INIT),
 };
 
-static struct clk shx3_shyway_clk = {
-	.flags		= CLK_ENABLE_ON_INIT,
-	.ops		= &shx3_shyway_clk_ops,
-};
-
-/*
- * Additional SHx3-specific on-chip clocks that aren't already part of the
- * clock framework
- */
-static struct clk *shx3_onchip_clocks[] = {
-	&shx3_shyway_clk,
+#define MSTPCR0		0xffc00030
+#define MSTPCR1		0xffc00034
+
+enum { MSTP027, MSTP026, MSTP025, MSTP024,
+       MSTP009, MSTP008, MSTP003, MSTP002,
+       MSTP001, MSTP000, MSTP119, MSTP105,
+       MSTP104, MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+	/* MSTPCR0 */
+	[MSTP027] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 27, 0),
+	[MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0),
+	[MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0),
+	[MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0),
+	[MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
+	[MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
+	[MSTP003] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 3, 0),
+	[MSTP002] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 2, 0),
+	[MSTP001] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 1, 0),
+	[MSTP000] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 0, 0),
+
+	/* MSTPCR1 */
+	[MSTP119] = SH_CLK_MSTP32(NULL, MSTPCR1, 19, 0),
+	[MSTP105] = SH_CLK_MSTP32(NULL, MSTPCR1, 5, 0),
+	[MSTP104] = SH_CLK_MSTP32(NULL, MSTPCR1, 4, 0),
 };
 
 #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
 
 static struct clk_lookup lookups[] = {
 	/* main clocks */
-	CLKDEV_CON_ID("shyway_clk", &shx3_shyway_clk),
+	CLKDEV_CON_ID("extal", &extal_clk),
+	CLKDEV_CON_ID("pll_clk", &pll_clk),
+
+	/* DIV4 clocks */
+	CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
+	CLKDEV_CON_ID("shywaya_clk", &div4_clks[DIV4_SHA]),
+	CLKDEV_CON_ID("ddr_clk", &div4_clks[DIV4_DDR]),
+	CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
+	CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_SH]),
+	CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
+
+	/* MSTP32 clocks */
+	{
+		/* SCIF3 */
+		.dev_id		= "sh-sci.3",
+		.con_id		= "sci_fck",
+		.clk		= &mstp_clks[MSTP027],
+	}, {
+		/* SCIF2 */
+		.dev_id		= "sh-sci.2",
+		.con_id		= "sci_fck",
+		.clk		= &mstp_clks[MSTP026],
+	}, {
+		/* SCIF1 */
+		.dev_id		= "sh-sci.1",
+		.con_id		= "sci_fck",
+		.clk		= &mstp_clks[MSTP025],
+	}, {
+		/* SCIF0 */
+		.dev_id		= "sh-sci.0",
+		.con_id		= "sci_fck",
+		.clk		= &mstp_clks[MSTP024],
+	},
+	CLKDEV_CON_ID("h8ex_fck", &mstp_clks[MSTP003]),
+	CLKDEV_CON_ID("csm_fck", &mstp_clks[MSTP002]),
+	CLKDEV_CON_ID("fe1_fck", &mstp_clks[MSTP001]),
+	CLKDEV_CON_ID("fe0_fck", &mstp_clks[MSTP000]),
+	{
+		/* TMU0 */
+		.dev_id		= "sh_tmu.0",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP008],
+	}, {
+		/* TMU1 */
+		.dev_id		= "sh_tmu.1",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP008],
+	}, {
+		/* TMU2 */
+		.dev_id		= "sh_tmu.2",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP008],
+	}, {
+		/* TMU3 */
+		.dev_id		= "sh_tmu.3",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP009],
+	}, {
+		/* TMU4 */
+		.dev_id		= "sh_tmu.4",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP009],
+	}, {
+		/* TMU5 */
+		.dev_id		= "sh_tmu.5",
+		.con_id		= "tmu_fck",
+		.clk		= &mstp_clks[MSTP009],
+	},
+	CLKDEV_CON_ID("hudi_fck", &mstp_clks[MSTP119]),
+	CLKDEV_CON_ID("dmac_11_6_fck", &mstp_clks[MSTP105]),
+	CLKDEV_CON_ID("dmac_5_0_fck", &mstp_clks[MSTP104]),
 };
 
 int __init arch_clk_init(void)
 {
-	struct clk *clk;
 	int i, ret = 0;
 
-	cpg_clk_init();
-
-	clk = clk_get(NULL, "master_clk");
-	for (i = 0; i < ARRAY_SIZE(shx3_onchip_clocks); i++) {
-		struct clk *clkp = shx3_onchip_clocks[i];
-
-		clkp->parent = clk;
-		ret |= clk_register(clkp);
-	}
-
-	clk_put(clk);
+	for (i = 0; i < ARRAY_SIZE(clks); i++)
+		ret |= clk_register(clks[i]);
+	for (i = 0; i < ARRAY_SIZE(lookups); i++)
+		clkdev_add(&lookups[i]);
 
-	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+	if (!ret)
+		ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
+					   &div4_table);
+	if (!ret)
+		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
 
 	return ret;
 }