1 files changed, 371 insertions, 16 deletions

diff --git a/arch/arm/mach-shmobile/clock-r8a73a4.c b/arch/arm/mach-shmobile/clock-r8a73a4.c
index e710c00c3822..5f7fe628b8a1 100644
--- a/arch/arm/mach-shmobile/clock-r8a73a4.c
+++ b/arch/arm/mach-shmobile/clock-r8a73a4.c
@@ -22,15 +22,44 @@
 #include <linux/kernel.h>
 #include <linux/sh_clk.h>
 #include <linux/clkdev.h>
+#include <mach/clock.h>
 #include <mach/common.h>
 
 #define CPG_BASE 0xe6150000
 #define CPG_LEN 0x270
 
-#define MPCKCR 0xe6150080
 #define SMSTPCR2 0xe6150138
+#define SMSTPCR3 0xe615013c
 #define SMSTPCR5 0xe6150144
 
+#define FRQCRA		0xE6150000
+#define FRQCRB		0xE6150004
+#define VCLKCR1		0xE6150008
+#define VCLKCR2		0xE615000C
+#define VCLKCR3		0xE615001C
+#define VCLKCR4		0xE6150014
+#define VCLKCR5		0xE6150034
+#define ZBCKCR		0xE6150010
+#define SD0CKCR		0xE6150074
+#define SD1CKCR		0xE6150078
+#define SD2CKCR		0xE615007C
+#define MMC0CKCR	0xE6150240
+#define MMC1CKCR	0xE6150244
+#define FSIACKCR	0xE6150018
+#define FSIBCKCR	0xE6150090
+#define MPCKCR		0xe6150080
+#define SPUVCKCR	0xE6150094
+#define HSICKCR		0xE615026C
+#define M4CKCR		0xE6150098
+#define PLLECR		0xE61500D0
+#define PLL1CR		0xE6150028
+#define PLL2CR		0xE615002C
+#define PLL2SCR		0xE61501F4
+#define PLL2HCR		0xE61501E4
+#define CKSCR		0xE61500C0
+
+#define CPG_MAP(o) ((o - CPG_BASE) + cpg_mapping.base)
+
 static struct clk_mapping cpg_mapping = {
 	.phys   = CPG_BASE,
 	.len    = CPG_LEN,
@@ -51,29 +80,327 @@ static struct clk extal2_clk = {
 	.mapping	= &cpg_mapping,
 };
 
+static struct sh_clk_ops followparent_clk_ops = {
+	.recalc	= followparent_recalc,
+};
+
+static struct clk main_clk = {
+	/* .parent will be set r8a73a4_clock_init */
+	.ops	= &followparent_clk_ops,
+};
+
+SH_CLK_RATIO(div2,	1, 2);
+SH_CLK_RATIO(div4,	1, 4);
+
+SH_FIXED_RATIO_CLK(main_div2_clk,	main_clk,		div2);
+SH_FIXED_RATIO_CLK(extal1_div2_clk,	extal1_clk,		div2);
+SH_FIXED_RATIO_CLK(extal2_div2_clk,	extal2_clk,		div2);
+SH_FIXED_RATIO_CLK(extal2_div4_clk,	extal2_clk,		div4);
+
+/* External FSIACK/FSIBCK clock */
+static struct clk fsiack_clk = {
+};
+
+static struct clk fsibck_clk = {
+};
+
+/*
+ *		PLL clocks
+ */
+static struct clk *pll_parent_main[] = {
+	[0] = &main_clk,
+	[1] = &main_div2_clk
+};
+
+static struct clk *pll_parent_main_extal[8] = {
+	[0] = &main_div2_clk,
+	[1] = &extal2_div2_clk,
+	[3] = &extal2_div4_clk,
+	[4] = &main_clk,
+	[5] = &extal2_clk,
+};
+
+static unsigned long pll_recalc(struct clk *clk)
+{
+	unsigned long mult = 1;
+
+	if (ioread32(CPG_MAP(PLLECR)) & (1 << clk->enable_bit))
+		mult = (((ioread32(clk->mapped_reg) >> 24) & 0x7f) + 1);
+
+	return clk->parent->rate * mult;
+}
+
+static int pll_set_parent(struct clk *clk, struct clk *parent)
+{
+	u32 val;
+	int i, ret;
+
+	if (!clk->parent_table || !clk->parent_num)
+		return -EINVAL;
+
+	/* Search the parent */
+	for (i = 0; i < clk->parent_num; i++)
+		if (clk->parent_table[i] == parent)
+			break;
+
+	if (i == clk->parent_num)
+		return -ENODEV;
+
+	ret = clk_reparent(clk, parent);
+	if (ret < 0)
+		return ret;
+
+	val = ioread32(clk->mapped_reg) &
+		~(((1 << clk->src_width) - 1) << clk->src_shift);
+
+	iowrite32(val | i << clk->src_shift, clk->mapped_reg);
+
+	return 0;
+}
+
+static struct sh_clk_ops pll_clk_ops = {
+	.recalc		= pll_recalc,
+	.set_parent	= pll_set_parent,
+};
+
+#define PLL_CLOCK(name, p, pt, w, s, reg, e)		\
+	static struct clk name = {			\
+		.ops		= &pll_clk_ops,		\
+		.flags		= CLK_ENABLE_ON_INIT,	\
+		.parent		= p,			\
+		.parent_table	= pt,			\
+		.parent_num	= ARRAY_SIZE(pt),	\
+		.src_width	= w,			\
+		.src_shift	= s,			\
+		.enable_reg	= (void __iomem *)reg,	\
+		.enable_bit	= e,			\
+		.mapping	= &cpg_mapping,		\
+	}
+
+PLL_CLOCK(pll1_clk,  &main_clk,      pll_parent_main,       1, 7, PLL1CR,  1);
+PLL_CLOCK(pll2_clk,  &main_div2_clk, pll_parent_main_extal, 3, 5, PLL2CR,  2);
+PLL_CLOCK(pll2s_clk, &main_div2_clk, pll_parent_main_extal, 3, 5, PLL2SCR, 4);
+PLL_CLOCK(pll2h_clk, &main_div2_clk, pll_parent_main_extal, 3, 5, PLL2HCR, 5);
+
+SH_FIXED_RATIO_CLK(pll1_div2_clk,	pll1_clk,	div2);
+
 static struct clk *main_clks[] = {
 	&extalr_clk,
 	&extal1_clk,
+	&extal1_div2_clk,
 	&extal2_clk,
+	&extal2_div2_clk,
+	&extal2_div4_clk,
+	&main_clk,
+	&main_div2_clk,
+	&fsiack_clk,
+	&fsibck_clk,
+	&pll1_clk,
+	&pll1_div2_clk,
+	&pll2_clk,
+	&pll2s_clk,
+	&pll2h_clk,
+};
+
+/* DIV4 */
+static void div4_kick(struct clk *clk)
+{
+	unsigned long value;
+
+	/* set KICK bit in FRQCRB to update hardware setting */
+	value = ioread32(CPG_MAP(FRQCRB));
+	value |= (1 << 31);
+	iowrite32(value, CPG_MAP(FRQCRB));
+}
+
+static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18, 24, 0, 36, 48, 10};
+
+static struct clk_div_mult_table div4_div_mult_table = {
+	.divisors	= divisors,
+	.nr_divisors	= ARRAY_SIZE(divisors),
+};
+
+static struct clk_div4_table div4_table = {
+	.div_mult_table	= &div4_div_mult_table,
+	.kick		= div4_kick,
+};
+
+enum {
+	DIV4_I, DIV4_M3, DIV4_B, DIV4_M1, DIV4_M2,
+	DIV4_ZX, DIV4_ZS, DIV4_HP,
+	DIV4_NR };
+
+static struct clk div4_clks[DIV4_NR] = {
+	[DIV4_I]	= SH_CLK_DIV4(&pll1_clk, FRQCRA, 20, 0x0dff, CLK_ENABLE_ON_INIT),
+	[DIV4_M3]	= SH_CLK_DIV4(&pll1_clk, FRQCRA, 12, 0x1dff, CLK_ENABLE_ON_INIT),
+	[DIV4_B]	= SH_CLK_DIV4(&pll1_clk, FRQCRA,  8, 0x0dff, CLK_ENABLE_ON_INIT),
+	[DIV4_M1]	= SH_CLK_DIV4(&pll1_clk, FRQCRA,  4, 0x1dff, 0),
+	[DIV4_M2]	= SH_CLK_DIV4(&pll1_clk, FRQCRA,  0, 0x1dff, 0),
+	[DIV4_ZX]	= SH_CLK_DIV4(&pll1_clk, FRQCRB, 12, 0x0dff, 0),
+	[DIV4_ZS]	= SH_CLK_DIV4(&pll1_clk, FRQCRB,  8, 0x0dff, 0),
+	[DIV4_HP]	= SH_CLK_DIV4(&pll1_clk, FRQCRB,  4, 0x0dff, 0),
 };
 
 enum {
+	DIV6_ZB,
+	DIV6_SDHI0, DIV6_SDHI1, DIV6_SDHI2,
+	DIV6_MMC0, DIV6_MMC1,
+	DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_VCK4, DIV6_VCK5,
+	DIV6_FSIA, DIV6_FSIB,
+	DIV6_MP, DIV6_M4, DIV6_HSI, DIV6_SPUV,
+	DIV6_NR };
+
+static struct clk *div6_parents[8] = {
+	[0] = &pll1_div2_clk,
+	[1] = &pll2s_clk,
+	[3] = &extal2_clk,
+	[4] = &main_div2_clk,
+	[6] = &extalr_clk,
+};
+
+static struct clk *fsia_parents[4] = {
+	[0] = &pll1_div2_clk,
+	[1] = &pll2s_clk,
+	[2] = &fsiack_clk,
+};
+
+static struct clk *fsib_parents[4] = {
+	[0] = &pll1_div2_clk,
+	[1] = &pll2s_clk,
+	[2] = &fsibck_clk,
+};
+
+static struct clk *mp_parents[4] = {
+	[0] = &pll1_div2_clk,
+	[1] = &pll2s_clk,
+	[2] = &extal2_clk,
+	[3] = &extal2_clk,
+};
+
+static struct clk *m4_parents[2] = {
+	[0] = &pll2s_clk,
+};
+
+static struct clk *hsi_parents[4] = {
+	[0] = &pll2h_clk,
+	[1] = &pll1_div2_clk,
+	[3] = &pll2s_clk,
+};
+
+/*** FIXME ***
+ * SH_CLK_DIV6_EXT() macro doesn't care .mapping
+ * but, it is necessary on R-Car (= ioremap() base CPG)
+ * The difference between
+ * SH_CLK_DIV6_EXT() <--> SH_CLK_MAP_DIV6_EXT()
+ * is only .mapping
+ */
+#define SH_CLK_MAP_DIV6_EXT(_reg, _flags, _parents,			\
+			    _num_parents, _src_shift, _src_width)	\
+{									\
+	.enable_reg	= (void __iomem *)_reg,				\
+	.enable_bit	= 0, /* unused */				\
+	.flags		= _flags | CLK_MASK_DIV_ON_DISABLE,		\
+	.div_mask	= SH_CLK_DIV6_MSK,				\
+	.parent_table	= _parents,					\
+	.parent_num	= _num_parents,					\
+	.src_shift	= _src_shift,					\
+	.src_width	= _src_width,					\
+	.mapping	= &cpg_mapping,					\
+}
+
+static struct clk div6_clks[DIV6_NR] = {
+	[DIV6_ZB] = SH_CLK_MAP_DIV6_EXT(ZBCKCR, CLK_ENABLE_ON_INIT,
+				div6_parents, 2, 7, 1),
+	[DIV6_SDHI0] = SH_CLK_MAP_DIV6_EXT(SD0CKCR, 0,
+				div6_parents, 2, 6, 2),
+	[DIV6_SDHI1] = SH_CLK_MAP_DIV6_EXT(SD1CKCR, 0,
+				div6_parents, 2, 6, 2),
+	[DIV6_SDHI2] = SH_CLK_MAP_DIV6_EXT(SD2CKCR, 0,
+				div6_parents, 2, 6, 2),
+	[DIV6_MMC0] = SH_CLK_MAP_DIV6_EXT(MMC0CKCR, 0,
+				div6_parents, 2, 6, 2),
+	[DIV6_MMC1] = SH_CLK_MAP_DIV6_EXT(MMC1CKCR, 0,
+				div6_parents, 2, 6, 2),
+	[DIV6_VCK1] = SH_CLK_MAP_DIV6_EXT(VCLKCR1, 0, /* didn't care bit[6-7] */
+				div6_parents, ARRAY_SIZE(div6_parents), 12, 3),
+	[DIV6_VCK2] = SH_CLK_MAP_DIV6_EXT(VCLKCR2, 0, /* didn't care bit[6-7] */
+				div6_parents, ARRAY_SIZE(div6_parents), 12, 3),
+	[DIV6_VCK3] = SH_CLK_MAP_DIV6_EXT(VCLKCR3, 0, /* didn't care bit[6-7] */
+				div6_parents, ARRAY_SIZE(div6_parents), 12, 3),
+	[DIV6_VCK4] = SH_CLK_MAP_DIV6_EXT(VCLKCR4, 0, /* didn't care bit[6-7] */
+				div6_parents, ARRAY_SIZE(div6_parents), 12, 3),
+	[DIV6_VCK5] = SH_CLK_MAP_DIV6_EXT(VCLKCR5, 0, /* didn't care bit[6-7] */
+				div6_parents, ARRAY_SIZE(div6_parents), 12, 3),
+	[DIV6_FSIA] = SH_CLK_MAP_DIV6_EXT(FSIACKCR, 0,
+				fsia_parents, ARRAY_SIZE(fsia_parents), 6, 2),
+	[DIV6_FSIB] = SH_CLK_MAP_DIV6_EXT(FSIBCKCR, 0,
+				fsib_parents, ARRAY_SIZE(fsib_parents), 6, 2),
+	[DIV6_MP] = SH_CLK_MAP_DIV6_EXT(MPCKCR, 0, /* it needs bit[9-11] control */
+				mp_parents, ARRAY_SIZE(mp_parents), 6, 2),
+	/* pll2s will be selected always for M4 */
+	[DIV6_M4] = SH_CLK_MAP_DIV6_EXT(M4CKCR, 0, /* it needs bit[9] control */
+				m4_parents, ARRAY_SIZE(m4_parents), 6, 1),
+	[DIV6_HSI] = SH_CLK_MAP_DIV6_EXT(HSICKCR, 0, /* it needs bit[9] control */
+				hsi_parents, ARRAY_SIZE(hsi_parents), 6, 2),
+	[DIV6_SPUV] = SH_CLK_MAP_DIV6_EXT(SPUVCKCR, 0,
+				mp_parents, ARRAY_SIZE(mp_parents), 6, 2),
+};
+
+/* MSTP */
+enum {
 	MSTP217, MSTP216, MSTP207, MSTP206, MSTP204, MSTP203,
+	MSTP315, MSTP314, MSTP313, MSTP312, MSTP305,
 	MSTP522,
 	MSTP_NR
 };
 
 static struct clk mstp_clks[MSTP_NR] = {
-	[MSTP204] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 4, 0), /* SCIFA0 */
-	[MSTP203] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 3, 0), /* SCIFA1 */
-	[MSTP206] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 6, 0), /* SCIFB0 */
-	[MSTP207] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 7, 0), /* SCIFB1 */
-	[MSTP216] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 16, 0), /* SCIFB2 */
-	[MSTP217] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 17, 0), /* SCIFB3 */
+	[MSTP204] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 4, 0), /* SCIFA0 */
+	[MSTP203] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 3, 0), /* SCIFA1 */
+	[MSTP206] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 6, 0), /* SCIFB0 */
+	[MSTP207] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 7, 0), /* SCIFB1 */
+	[MSTP216] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 16, 0), /* SCIFB2 */
+	[MSTP217] = SH_CLK_MSTP32(&div6_clks[DIV6_MP],	SMSTPCR2, 17, 0), /* SCIFB3 */
+	[MSTP305] = SH_CLK_MSTP32(&div6_clks[DIV6_MMC1],SMSTPCR3, 5, 0), /* MMCIF1 */
+	[MSTP312] = SH_CLK_MSTP32(&div6_clks[DIV6_SDHI2],SMSTPCR3, 12, 0), /* SDHI2 */
+	[MSTP313] = SH_CLK_MSTP32(&div6_clks[DIV6_SDHI1],SMSTPCR3, 13, 0), /* SDHI1 */
+	[MSTP314] = SH_CLK_MSTP32(&div6_clks[DIV6_SDHI0],SMSTPCR3, 14, 0), /* SDHI0 */
+	[MSTP315] = SH_CLK_MSTP32(&div6_clks[DIV6_MMC0],SMSTPCR3, 15, 0), /* MMCIF0 */
 	[MSTP522] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR5, 22, 0), /* Thermal */
 };
 
 static struct clk_lookup lookups[] = {
+	/* main clock */
+	CLKDEV_CON_ID("extal1",			&extal1_clk),
+	CLKDEV_CON_ID("extal1_div2",		&extal1_div2_clk),
+	CLKDEV_CON_ID("extal2",			&extal2_clk),
+	CLKDEV_CON_ID("extal2_div2",		&extal2_div2_clk),
+	CLKDEV_CON_ID("extal2_div4",		&extal2_div4_clk),
+	CLKDEV_CON_ID("fsiack",			&fsiack_clk),
+	CLKDEV_CON_ID("fsibck",			&fsibck_clk),
+
+	/* pll clock */
+	CLKDEV_CON_ID("pll1",			&pll1_clk),
+	CLKDEV_CON_ID("pll1_div2",		&pll1_div2_clk),
+	CLKDEV_CON_ID("pll2",			&pll2_clk),
+	CLKDEV_CON_ID("pll2s",			&pll2s_clk),
+	CLKDEV_CON_ID("pll2h",			&pll2h_clk),
+
+	/* DIV6 */
+	CLKDEV_CON_ID("zb",			&div6_clks[DIV6_ZB]),
+	CLKDEV_CON_ID("vck1",			&div6_clks[DIV6_VCK1]),
+	CLKDEV_CON_ID("vck2",			&div6_clks[DIV6_VCK2]),
+	CLKDEV_CON_ID("vck3",			&div6_clks[DIV6_VCK3]),
+	CLKDEV_CON_ID("vck4",			&div6_clks[DIV6_VCK4]),
+	CLKDEV_CON_ID("vck5",			&div6_clks[DIV6_VCK5]),
+	CLKDEV_CON_ID("fsia",			&div6_clks[DIV6_FSIA]),
+	CLKDEV_CON_ID("fsib",			&div6_clks[DIV6_FSIB]),
+	CLKDEV_CON_ID("mp",			&div6_clks[DIV6_MP]),
+	CLKDEV_CON_ID("m4",			&div6_clks[DIV6_M4]),
+	CLKDEV_CON_ID("hsi",			&div6_clks[DIV6_HSI]),
+	CLKDEV_CON_ID("spuv",			&div6_clks[DIV6_SPUV]),
+
+	/* MSTP */
 	CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]),
 	CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]),
 	CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP206]),
@@ -81,6 +408,16 @@ static struct clk_lookup lookups[] = {
 	CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP216]),
 	CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP217]),
 	CLKDEV_DEV_ID("rcar_thermal", &mstp_clks[MSTP522]),
+	CLKDEV_DEV_ID("sh_mmcif.1", &mstp_clks[MSTP305]),
+	CLKDEV_DEV_ID("ee220000.mmcif", &mstp_clks[MSTP305]),
+	CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP312]),
+	CLKDEV_DEV_ID("ee140000.sdhi", &mstp_clks[MSTP312]),
+	CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]),
+	CLKDEV_DEV_ID("ee120000.sdhi", &mstp_clks[MSTP313]),
+	CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]),
+	CLKDEV_DEV_ID("ee100000.sdhi", &mstp_clks[MSTP314]),
+	CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP315]),
+	CLKDEV_DEV_ID("ee200000.mmcif", &mstp_clks[MSTP315]),
 
 	/* for DT */
 	CLKDEV_DEV_ID("e61f0000.thermal", &mstp_clks[MSTP522]),
@@ -88,22 +425,40 @@ static struct clk_lookup lookups[] = {
 
 void __init r8a73a4_clock_init(void)
 {
-	void __iomem *cpg_base, *reg;
+	void __iomem *reg;
 	int k, ret = 0;
+	u32 ckscr;
+
+	reg = ioremap_nocache(CKSCR, PAGE_SIZE);
+	BUG_ON(!reg);
+	ckscr = ioread32(reg);
+	iounmap(reg);
 
-	/* fix MPCLK to EXTAL2 for now.
-	 * this is needed until more detailed clock topology is supported
-	 */
-	cpg_base = ioremap_nocache(CPG_BASE, CPG_LEN);
-	BUG_ON(!cpg_base);
-	reg = cpg_base + (MPCKCR - CPG_BASE);
-	iowrite32(ioread32(reg) | 1 << 7 | 0x0c, reg); /* set CKSEL */
-	iounmap(cpg_base);
+	switch ((ckscr >> 28) & 0x3) {
+	case 0:
+		main_clk.parent = &extal1_clk;
+		break;
+	case 1:
+		main_clk.parent = &extal1_div2_clk;
+		break;
+	case 2:
+		main_clk.parent = &extal2_clk;
+		break;
+	case 3:
+		main_clk.parent = &extal2_div2_clk;
+		break;
+	}
 
 	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
 		ret = clk_register(main_clks[k]);
 
 	if (!ret)
+		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
+
+	if (!ret)
+		ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR);
+
+	if (!ret)
 		ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
 
 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));