diff options
author | Paul Mackerras <paulus@samba.org> | 2007-05-08 13:37:51 +1000 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2007-05-08 13:37:51 +1000 |
commit | 02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1 (patch) | |
tree | 04ef573cd4de095c500c9fc3477f4278c0b36300 /arch/sh/kernel/cpu | |
parent | 7487a2245b8841c77ba9db406cf99a483b9334e9 (diff) | |
parent | 5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff) |
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/sh/kernel/cpu')
-rw-r--r-- | arch/sh/kernel/cpu/clock.c | 102 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/init.c | 19 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/irq/Makefile | 2 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/irq/intc2.c | 3 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/irq/pint.c | 56 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh3/Makefile | 1 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh3/probe.c | 3 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh3/setup-sh7705.c | 54 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh3/setup-sh7709.c | 29 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh3/setup-sh7710.c | 60 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4/clock-sh4-202.c | 3 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4/probe.c | 8 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/Makefile | 4 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/clock-sh7722.c | 600 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/clock-sh7785.c | 162 | ||||
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/setup-sh7785.c | 103 |
16 files changed, 1155 insertions, 54 deletions
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c index abb586b1256..014f318f5a0 100644 --- a/arch/sh/kernel/cpu/clock.c +++ b/arch/sh/kernel/cpu/clock.c @@ -1,7 +1,7 @@ /* * arch/sh/kernel/cpu/clock.c - SuperH clock framework * - * Copyright (C) 2005, 2006 Paul Mundt + * Copyright (C) 2005, 2006, 2007 Paul Mundt * * This clock framework is derived from the OMAP version by: * @@ -23,6 +23,7 @@ #include <linux/seq_file.h> #include <linux/err.h> #include <linux/platform_device.h> +#include <linux/proc_fs.h> #include <asm/clock.h> #include <asm/timer.h> @@ -98,15 +99,17 @@ int __clk_enable(struct clk *clk) if (clk->ops && clk->ops->init) clk->ops->init(clk); + kref_get(&clk->kref); + if (clk->flags & CLK_ALWAYS_ENABLED) return 0; if (likely(clk->ops && clk->ops->enable)) clk->ops->enable(clk); - kref_get(&clk->kref); return 0; } +EXPORT_SYMBOL_GPL(__clk_enable); int clk_enable(struct clk *clk) { @@ -119,6 +122,7 @@ int clk_enable(struct clk *clk) return ret; } +EXPORT_SYMBOL_GPL(clk_enable); static void clk_kref_release(struct kref *kref) { @@ -127,11 +131,17 @@ static void clk_kref_release(struct kref *kref) void __clk_disable(struct clk *clk) { + int count = kref_put(&clk->kref, clk_kref_release); + if (clk->flags & CLK_ALWAYS_ENABLED) return; - kref_put(&clk->kref, clk_kref_release); + if (!count) { /* count reaches zero, disable the clock */ + if (likely(clk->ops && clk->ops->disable)) + clk->ops->disable(clk); + } } +EXPORT_SYMBOL_GPL(__clk_disable); void clk_disable(struct clk *clk) { @@ -141,6 +151,7 @@ void clk_disable(struct clk *clk) __clk_disable(clk); spin_unlock_irqrestore(&clock_lock, flags); } +EXPORT_SYMBOL_GPL(clk_disable); int clk_register(struct clk *clk) { @@ -151,8 +162,18 @@ int clk_register(struct clk *clk) mutex_unlock(&clock_list_sem); + if (clk->flags & CLK_ALWAYS_ENABLED) { + pr_debug( "Clock '%s' is ALWAYS_ENABLED\n", clk->name); + if (clk->ops && clk->ops->init) + clk->ops->init(clk); + if (clk->ops && clk->ops->enable) + clk->ops->enable(clk); + pr_debug( "Enabled."); + } + return 0; } +EXPORT_SYMBOL_GPL(clk_register); void clk_unregister(struct clk *clk) { @@ -160,21 +181,29 @@ void clk_unregister(struct clk *clk) list_del(&clk->node); mutex_unlock(&clock_list_sem); } +EXPORT_SYMBOL_GPL(clk_unregister); -inline unsigned long clk_get_rate(struct clk *clk) +unsigned long clk_get_rate(struct clk *clk) { return clk->rate; } +EXPORT_SYMBOL_GPL(clk_get_rate); int clk_set_rate(struct clk *clk, unsigned long rate) { + return clk_set_rate_ex(clk, rate, 0); +} +EXPORT_SYMBOL_GPL(clk_set_rate); + +int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id) +{ int ret = -EOPNOTSUPP; if (likely(clk->ops && clk->ops->set_rate)) { unsigned long flags; spin_lock_irqsave(&clock_lock, flags); - ret = clk->ops->set_rate(clk, rate); + ret = clk->ops->set_rate(clk, rate, algo_id); spin_unlock_irqrestore(&clock_lock, flags); } @@ -183,6 +212,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) return ret; } +EXPORT_SYMBOL_GPL(clk_set_rate_ex); void clk_recalc_rate(struct clk *clk) { @@ -197,6 +227,7 @@ void clk_recalc_rate(struct clk *clk) if (unlikely(clk->flags & CLK_RATE_PROPAGATES)) propagate_rate(clk); } +EXPORT_SYMBOL_GPL(clk_recalc_rate); /* * Returns a clock. Note that we first try to use device id on the bus @@ -233,18 +264,43 @@ found: return clk; } +EXPORT_SYMBOL_GPL(clk_get); void clk_put(struct clk *clk) { if (clk && !IS_ERR(clk)) module_put(clk->owner); } +EXPORT_SYMBOL_GPL(clk_put); void __init __attribute__ ((weak)) arch_init_clk_ops(struct clk_ops **ops, int type) { } +static int show_clocks(char *buf, char **start, off_t off, + int len, int *eof, void *data) +{ + struct clk *clk; + char *p = buf; + + list_for_each_entry_reverse(clk, &clock_list, node) { + unsigned long rate = clk_get_rate(clk); + + /* + * Don't bother listing dummy clocks with no ancestry + * that only support enable and disable ops. + */ + if (unlikely(!rate && !clk->parent)) + continue; + + p += sprintf(p, "%-12s\t: %ld.%02ldMHz\n", clk->name, + rate / 1000000, (rate % 1000000) / 10000); + } + + return p - buf; +} + int __init clk_init(void) { int i, ret = 0; @@ -256,7 +312,6 @@ int __init clk_init(void) arch_init_clk_ops(&clk->ops, i); ret |= clk_register(clk); - clk_enable(clk); } /* Kick the child clocks.. */ @@ -266,35 +321,14 @@ int __init clk_init(void) return ret; } -int show_clocks(struct seq_file *m) +static int __init clk_proc_init(void) { - struct clk *clk; - - list_for_each_entry_reverse(clk, &clock_list, node) { - unsigned long rate = clk_get_rate(clk); - - /* - * Don't bother listing dummy clocks with no ancestry - * that only support enable and disable ops. - */ - if (unlikely(!rate && !clk->parent)) - continue; - - seq_printf(m, "%-12s\t: %ld.%02ldMHz\n", clk->name, - rate / 1000000, (rate % 1000000) / 10000); - } + struct proc_dir_entry *p; + p = create_proc_read_entry("clocks", S_IRUSR, NULL, + show_clocks, NULL); + if (unlikely(!p)) + return -EINVAL; return 0; } - -EXPORT_SYMBOL_GPL(clk_register); -EXPORT_SYMBOL_GPL(clk_unregister); -EXPORT_SYMBOL_GPL(clk_get); -EXPORT_SYMBOL_GPL(clk_put); -EXPORT_SYMBOL_GPL(clk_enable); -EXPORT_SYMBOL_GPL(clk_disable); -EXPORT_SYMBOL_GPL(__clk_enable); -EXPORT_SYMBOL_GPL(__clk_disable); -EXPORT_SYMBOL_GPL(clk_get_rate); -EXPORT_SYMBOL_GPL(clk_set_rate); -EXPORT_SYMBOL_GPL(clk_recalc_rate); +subsys_initcall(clk_proc_init); diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c index 726acfcb9b7..6451ad63017 100644 --- a/arch/sh/kernel/cpu/init.c +++ b/arch/sh/kernel/cpu/init.c @@ -41,6 +41,23 @@ __setup("no" __stringify(x), x##_setup); onchip_setup(fpu); onchip_setup(dsp); +#ifdef CONFIG_SPECULATIVE_EXECUTION +#define CPUOPM 0xff2f0000 +#define CPUOPM_RABD (1 << 5) + +static void __init speculative_execution_init(void) +{ + /* Clear RABD */ + ctrl_outl(ctrl_inl(CPUOPM) & ~CPUOPM_RABD, CPUOPM); + + /* Flush the update */ + (void)ctrl_inl(CPUOPM); + ctrl_barrier(); +} +#else +#define speculative_execution_init() do { } while (0) +#endif + /* * Generic first-level cache init */ @@ -261,4 +278,6 @@ asmlinkage void __init sh_cpu_init(void) */ ubc_wakeup(); #endif + + speculative_execution_init(); } diff --git a/arch/sh/kernel/cpu/irq/Makefile b/arch/sh/kernel/cpu/irq/Makefile index 0049d217561..1c23308cfc2 100644 --- a/arch/sh/kernel/cpu/irq/Makefile +++ b/arch/sh/kernel/cpu/irq/Makefile @@ -4,6 +4,6 @@ obj-y += imask.o obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o -obj-$(CONFIG_CPU_HAS_PINT_IRQ) += pint.o +obj-$(CONFIG_CPU_HAS_PINT_IRQ) += pint.o obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o obj-$(CONFIG_CPU_HAS_INTC2_IRQ) += intc2.o diff --git a/arch/sh/kernel/cpu/irq/intc2.c b/arch/sh/kernel/cpu/irq/intc2.c index 74defe76a05..d8e22f4ff0f 100644 --- a/arch/sh/kernel/cpu/irq/intc2.c +++ b/arch/sh/kernel/cpu/irq/intc2.c @@ -18,7 +18,8 @@ #define INTC2_BASE 0xfe080000 #define INTC2_INTMSK (INTC2_BASE + 0x40) #define INTC2_INTMSKCLR (INTC2_BASE + 0x60) -#elif defined(CONFIG_CPU_SUBTYPE_SH7780) +#elif defined(CONFIG_CPU_SUBTYPE_SH7780) || \ + defined(CONFIG_CPU_SUBTYPE_SH7785) #define INTC2_BASE 0xffd40000 #define INTC2_INTMSK (INTC2_BASE + 0x38) #define INTC2_INTMSKCLR (INTC2_BASE + 0x3c) diff --git a/arch/sh/kernel/cpu/irq/pint.c b/arch/sh/kernel/cpu/irq/pint.c index f60007783a2..67602685df1 100644 --- a/arch/sh/kernel/cpu/irq/pint.c +++ b/arch/sh/kernel/cpu/irq/pint.c @@ -18,6 +18,58 @@ #include <asm/io.h> #include <asm/machvec.h> +#if defined(CONFIG_CPU_SUBTYPE_SH7705) +#define INTC_INTER 0xA4000014UL +#define INTC_IPRD 0xA4000018UL +#define INTC_ICR2 0xA4000012UL + +/* PFC */ +#define PORT_PACR 0xA4000100UL +#define PORT_PBCR 0xA4000102UL +#define PORT_PCCR 0xA4000104UL +#define PORT_PDCR 0xA4000106UL +#define PORT_PECR 0xA4000108UL +#define PORT_PFCR 0xA400010AUL +#define PORT_PGCR 0xA400010CUL +#define PORT_PHCR 0xA400010EUL +#define PORT_PJCR 0xA4000110UL +#define PORT_PKCR 0xA4000112UL +#define PORT_PLCR 0xA4000114UL +#define PORT_PMCR 0xA4000118UL +#define PORT_PNCR 0xA400011AUL +#define PORT_PECR2 0xA4050148UL +#define PORT_PFCR2 0xA405014AUL +#define PORT_PNCR2 0xA405015AUL + +/* I/O port */ +#define PORT_PADR 0xA4000120UL +#define PORT_PBDR 0xA4000122UL +#define PORT_PCDR 0xA4000124UL +#define PORT_PDDR 0xA4000126UL +#define PORT_PEDR 0xA4000128UL +#define PORT_PFDR 0xA400012AUL +#define PORT_PGDR 0xA400012CUL +#define PORT_PHDR 0xA400012EUL +#define PORT_PJDR 0xA4000130UL +#define PORT_PKDR 0xA4000132UL +#define PORT_PLDR 0xA4000134UL +#define PORT_PMDR 0xA4000138UL +#define PORT_PNDR 0xA400013AUL + +#define PINT0_IRQ 40 +#define PINT8_IRQ 41 +#define PINT_IRQ_BASE 86 + +#define PINT0_IPR_ADDR INTC_IPRD +#define PINT0_IPR_POS 3 +#define PINT0_PRIORITY 2 + +#define PINT8_IPR_ADDR INTC_IPRD +#define PINT8_IPR_POS 2 +#define PINT8_PRIORITY 2 + +#endif /* CONFIG_CPU_SUBTYPE_SH7705 */ + static unsigned char pint_map[256]; static unsigned long portcr_mask; @@ -126,7 +178,7 @@ int ipr_irq_demux(int irq) unsigned long creg, dreg, d, sav; if (irq == PINT0_IRQ) { -#if defined(CONFIG_CPU_SUBTYPE_SH7707) +#if defined(CONFIG_CPU_SUBTYPE_SH7705) || defined(CONFIG_CPU_SUBTYPE_SH7707) creg = PORT_PACR; dreg = PORT_PADR; #else @@ -144,7 +196,7 @@ int ipr_irq_demux(int irq) return PINT_IRQ_BASE + pint_map[d]; } else if (irq == PINT8_IRQ) { -#if defined(CONFIG_CPU_SUBTYPE_SH7707) +#if defined(CONFIG_CPU_SUBTYPE_SH7705) || defined(CONFIG_CPU_SUBTYPE_SH7707) creg = PORT_PBCR; dreg = PORT_PBDR; #else diff --git a/arch/sh/kernel/cpu/sh3/Makefile b/arch/sh/kernel/cpu/sh3/Makefile index 83905e4e438..09faa056cd4 100644 --- a/arch/sh/kernel/cpu/sh3/Makefile +++ b/arch/sh/kernel/cpu/sh3/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7708) += setup-sh7708.o obj-$(CONFIG_CPU_SUBTYPE_SH7709) += setup-sh7709.o obj-$(CONFIG_CPU_SUBTYPE_SH7300) += setup-sh7300.o obj-$(CONFIG_CPU_SUBTYPE_SH7710) += setup-sh7710.o +obj-$(CONFIG_CPU_SUBTYPE_SH7712) += setup-sh7710.o # Primary on-chip clocks (common) clock-$(CONFIG_CPU_SH3) := clock-sh3.o diff --git a/arch/sh/kernel/cpu/sh3/probe.c b/arch/sh/kernel/cpu/sh3/probe.c index 821b0ab7b52..647623b22ed 100644 --- a/arch/sh/kernel/cpu/sh3/probe.c +++ b/arch/sh/kernel/cpu/sh3/probe.c @@ -78,6 +78,9 @@ int __init detect_cpu_and_cache_system(void) #if defined(CONFIG_CPU_SUBTYPE_SH7710) current_cpu_data.type = CPU_SH7710; #endif +#if defined(CONFIG_CPU_SUBTYPE_SH7712) + current_cpu_data.type = CPU_SH7712; +#endif #if defined(CONFIG_CPU_SUBTYPE_SH7705) current_cpu_data.type = CPU_SH7705; diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7705.c b/arch/sh/kernel/cpu/sh3/setup-sh7705.c index a8e41c5241f..1983fb7ad6e 100644 --- a/arch/sh/kernel/cpu/sh3/setup-sh7705.c +++ b/arch/sh/kernel/cpu/sh3/setup-sh7705.c @@ -2,6 +2,7 @@ * SH7705 Setup * * Copyright (C) 2006 Paul Mundt + * Copyright (C) 2007 Nobuhiro Iwamatsu * * 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 @@ -14,15 +15,15 @@ static struct plat_sci_port sci_platform_data[] = { { - .mapbase = 0xa4400000, + .mapbase = 0xa4410000, .flags = UPF_BOOT_AUTOCONF, .type = PORT_SCIF, - .irqs = { 52, 53, 55, 54 }, + .irqs = { 56, 57, 59 }, }, { - .mapbase = 0xa4410000, + .mapbase = 0xa4400000, .flags = UPF_BOOT_AUTOCONF, .type = PORT_SCIF, - .irqs = { 56, 57, 59, 58 }, + .irqs = { 52, 53, 55 }, }, { .flags = 0, } @@ -46,3 +47,48 @@ static int __init sh7705_devices_setup(void) ARRAY_SIZE(sh7705_devices)); } __initcall(sh7705_devices_setup); + +static struct ipr_data sh7705_ipr_map[] = { + /* IRQ, IPR-idx, shift, priority */ + { 16, 0, 12, 2 }, /* TMU0 TUNI*/ + { 17, 0, 8, 2 }, /* TMU1 TUNI */ + { 18, 0, 4, 2 }, /* TMU2 TUNI */ + { 27, 1, 12, 2 }, /* WDT ITI */ + { 20, 0, 0, 2 }, /* RTC ATI (alarm) */ + { 21, 0, 0, 2 }, /* RTC PRI (period) */ + { 22, 0, 0, 2 }, /* RTC CUI (carry) */ + { 48, 4, 12, 7 }, /* DMAC DMTE0 */ + { 49, 4, 12, 7 }, /* DMAC DMTE1 */ + { 50, 4, 12, 7 }, /* DMAC DMTE2 */ + { 51, 4, 12, 7 }, /* DMAC DMTE3 */ + { 52, 4, 8, 3 }, /* SCIF0 ERI */ + { 53, 4, 8, 3 }, /* SCIF0 RXI */ + { 55, 4, 8, 3 }, /* SCIF0 TXI */ + { 56, 4, 4, 3 }, /* SCIF1 ERI */ + { 57, 4, 4, 3 }, /* SCIF1 RXI */ + { 59, 4, 4, 3 }, /* SCIF1 TXI */ +}; + +static unsigned long ipr_offsets[] = { + 0xFFFFFEE2 /* 0: IPRA */ +, 0xFFFFFEE4 /* 1: IPRB */ +, 0xA4000016 /* 2: IPRC */ +, 0xA4000018 /* 3: IPRD */ +, 0xA400001A /* 4: IPRE */ +, 0xA4080000 /* 5: IPRF */ +, 0xA4080002 /* 6: IPRG */ +, 0xA4080004 /* 7: IPRH */ +}; + +/* given the IPR index return the address of the IPR register */ +unsigned int map_ipridx_to_addr(int idx) +{ + if (idx >= ARRAY_SIZE(ipr_offsets)) + return 0; + return ipr_offsets[idx]; +} + +void __init init_IRQ_ipr() +{ + make_ipr_irq(sh7705_ipr_map, ARRAY_SIZE(sh7705_ipr_map)); +} diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7709.c b/arch/sh/kernel/cpu/sh3/setup-sh7709.c index dc9b211cf87..c7d7c35fc83 100644 --- a/arch/sh/kernel/cpu/sh3/setup-sh7709.c +++ b/arch/sh/kernel/cpu/sh3/setup-sh7709.c @@ -48,24 +48,33 @@ static struct platform_device *sh7709_devices[] __initdata = { static int __init sh7709_devices_setup(void) { return platform_add_devices(sh7709_devices, - ARRAY_SIZE(sh7709_devices)); + ARRAY_SIZE(sh7709_devices)); } __initcall(sh7709_devices_setup); -#define IPRx(A,N) .addr=A, .shift=0*N*-1 +#define IPRx(A,N) .addr=A, .shift=N #define IPRA(N) IPRx(0xfffffee2UL,N) #define IPRB(N) IPRx(0xfffffee4UL,N) +#define IPRC(N) IPRx(0xa4000016UL,N) +#define IPRD(N) IPRx(0xa4000018UL,N) #define IPRE(N) IPRx(0xa400001aUL,N) static struct ipr_data sh7709_ipr_map[] = { - [16] = { IPRA(15-12), 2 }, /* TMU TUNI0 */ - [17] = { IPRA(11-8), 4 }, /* TMU TUNI1 */ - [22] = { IPRA(3-0), 2 }, /* RTC CUI */ - [23 ... 26] = { IPRB(7-4), 3 }, /* SCI */ - [27] = { IPRB(15-12), 2 }, /* WDT ITI */ - [48 ... 51] = { IPRE(15-12), 7 }, /* DMA */ - [52 ... 55] = { IPRE(11-8), 3 }, /* IRDA */ - [56 ... 59] = { IPRE(7-4), 3 }, /* SCIF */ + [16] = { IPRA(12), 2 }, /* TMU TUNI0 */ + [17] = { IPRA(8), 4 }, /* TMU TUNI1 */ + [18 ... 19] = { IPRA(4), 1 }, /* TMU TUNI1 */ + [20 ... 22] = { IPRA(0), 2 }, /* RTC CUI */ + [23 ... 26] = { IPRB(4), 3 }, /* SCI */ + [27] = { IPRB(12), 2 }, /* WDT ITI */ + [32] = { IPRC(0), 1 }, /* IRQ 0 */ + [33] = { IPRC(4), 1 }, /* IRQ 1 */ + [34] = { IPRC(8), 1 }, /* IRQ 2 APM */ + [35] = { IPRC(12), 1 }, /* IRQ 3 TOUCHSCREEN */ + [36] = { IPRD(0), 1 }, /* IRQ 4 */ + [37] = { IPRD(4), 1 }, /* IRQ 5 */ + [48 ... 51] = { IPRE(12), 7 }, /* DMA */ + [52 ... 55] = { IPRE(8), 3 }, /* IRDA */ + [56 ... 59] = { IPRE(4), 3 }, /* SCIF */ }; void __init init_IRQ_ipr() diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7710.c b/arch/sh/kernel/cpu/sh3/setup-sh7710.c index 895f99ee6a9..51760a7e7f1 100644 --- a/arch/sh/kernel/cpu/sh3/setup-sh7710.c +++ b/arch/sh/kernel/cpu/sh3/setup-sh7710.c @@ -2,6 +2,7 @@ * SH7710 Setup * * Copyright (C) 2006 Paul Mundt + * Copyright (C) 2007 Nobuhiro Iwamatsu * * 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 @@ -19,6 +20,12 @@ static struct plat_sci_port sci_platform_data[] = { .type = PORT_SCIF, .irqs = { 52, 53, 55, 54 }, }, { + .mapbase = 0xa4420000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 56, 57, 59, 58 }, + }, { + .flags = 0, } }; @@ -41,3 +48,56 @@ static int __init sh7710_devices_setup(void) ARRAY_SIZE(sh7710_devices)); } __initcall(sh7710_devices_setup); + +static struct ipr_data sh7710_ipr_map[] = { + /* IRQ, IPR-idx, shift, priority */ + { 16, 0, 12, 2 }, /* TMU0 TUNI*/ + { 17, 0, 8, 2 }, /* TMU1 TUNI */ + { 18, 0, 4, 2 }, /* TMU2 TUNI */ + { 27, 1, 12, 2 }, /* WDT ITI */ + { 20, 0, 0, 2 }, /* RTC ATI (alarm) */ + { 21, 0, 0, 2 }, /* RTC PRI (period) */ + { 22, 0, 0, 2 }, /* RTC CUI (carry) */ + { 48, 4, 12, 7 }, /* DMAC DMTE0 */ + { 49, 4, 12, 7 }, /* DMAC DMTE1 */ + { 50, 4, 12, 7 }, /* DMAC DMTE2 */ + { 51, 4, 12, 7 }, /* DMAC DMTE3 */ + { 52, 4, 8, 3 }, /* SCIF0 ERI */ + { 53, 4, 8, 3 }, /* SCIF0 RXI */ + { 54, 4, 8, 3 }, /* SCIF0 BRI */ + { 55, 4, 8, 3 }, /* SCIF0 TXI */ + { 56, 4, 4, 3 }, /* SCIF1 ERI */ + { 57, 4, 4, 3 }, /* SCIF1 RXI */ + { 58, 4, 4, 3 }, /* SCIF1 BRI */ + { 59, 4, 4, 3 }, /* SCIF1 TXI */ + { 76, 5, 8, 7 }, /* DMAC DMTE4 */ + { 77, 5, 8, 7 }, /* DMAC DMTE5 */ + { 80, 6, 12, 5 }, /* EDMAC EINT0 */ + { 81, 6, 8, 5 }, /* EDMAC EINT1 */ + { 82, 6, 4, 5 }, /* EDMAC EINT2 */ +}; + +static unsigned long ipr_offsets[] = { + 0xA414FEE2 /* 0: IPRA */ +, 0xA414FEE4 /* 1: IPRB */ +, 0xA4140016 /* 2: IPRC */ +, 0xA4140018 /* 3: IPRD */ +, 0xA414001A /* 4: IPRE */ +, 0xA4080000 /* 5: IPRF */ +, 0xA4080002 /* 6: IPRG */ +, 0xA4080004 /* 7: IPRH */ +, 0xA4080006 /* 8: IPRI */ +}; + +/* given the IPR index return the address of the IPR register */ +unsigned int map_ipridx_to_addr(int idx) +{ + if (idx >= ARRAY_SIZE(ipr_offsets)) + return 0; + return ipr_offsets[idx]; +} + +void __init init_IRQ_ipr() +{ + make_ipr_irq(sh7710_ipr_map, ARRAY_SIZE(sh7710_ipr_map)); +} diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c index fa2019aabd7..fcb2c41bc34 100644 --- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c +++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c @@ -82,7 +82,8 @@ static void shoc_clk_init(struct clk *clk) for (i = 0; i < ARRAY_SIZE(frqcr3_divisors); i++) { int divisor = frqcr3_divisors[i]; - if (clk->ops->set_rate(clk, clk->parent->rate / divisor) == 0) + if (clk->ops->set_rate(clk, clk->parent->rate / + divisor, 0) == 0) break; } diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c index 58950de2696..8cd04904c77 100644 --- a/arch/sh/kernel/cpu/sh4/probe.c +++ b/arch/sh/kernel/cpu/sh4/probe.c @@ -124,6 +124,14 @@ int __init detect_cpu_and_cache_system(void) current_cpu_data.dcache.ways = 4; current_cpu_data.flags |= CPU_HAS_LLSC; break; + case 0x3004: + case 0x3007: + current_cpu_data.type = CPU_SH7785; + current_cpu_data.icache.ways = 4; + current_cpu_data.dcache.ways = 4; + current_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER | + CPU_HAS_LLSC; + break; case 0x3008: if (prr == 0xa0) { current_cpu_data.type = CPU_SH7722; diff --git a/arch/sh/kernel/cpu/sh4a/Makefile b/arch/sh/kernel/cpu/sh4a/Makefile index a8f493f2f21..ab7422f8f82 100644 --- a/arch/sh/kernel/cpu/sh4a/Makefile +++ b/arch/sh/kernel/cpu/sh4a/Makefile @@ -5,6 +5,7 @@ # CPU subtype setup obj-$(CONFIG_CPU_SUBTYPE_SH7770) += setup-sh7770.o obj-$(CONFIG_CPU_SUBTYPE_SH7780) += setup-sh7780.o +obj-$(CONFIG_CPU_SUBTYPE_SH7785) += setup-sh7785.o obj-$(CONFIG_CPU_SUBTYPE_SH73180) += setup-sh73180.o obj-$(CONFIG_CPU_SUBTYPE_SH7343) += setup-sh7343.o obj-$(CONFIG_CPU_SUBTYPE_SH7722) += setup-sh7722.o @@ -13,7 +14,8 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7722) += setup-sh7722.o clock-$(CONFIG_CPU_SUBTYPE_SH73180) := clock-sh73180.o clock-$(CONFIG_CPU_SUBTYPE_SH7770) := clock-sh7770.o clock-$(CONFIG_CPU_SUBTYPE_SH7780) := clock-sh7780.o +clock-$(CONFIG_CPU_SUBTYPE_SH7785) := clock-sh7785.o clock-$(CONFIG_CPU_SUBTYPE_SH7343) := clock-sh7343.o -clock-$(CONFIG_CPU_SUBTYPE_SH7722) := clock-sh7343.o +clock-$(CONFIG_CPU_SUBTYPE_SH7722) := clock-sh7722.o obj-y += $(clock-y) diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c new file mode 100644 index 00000000000..29090035bc5 --- /dev/null +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c @@ -0,0 +1,600 @@ +/* + * arch/sh/kernel/cpu/sh4a/clock-sh7722.c + * + * SH7722 support for the clock framework + * + * Copyright (c) 2006-2007 Nomad Global Solutions Inc + * Based on code for sh7343 by 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 + * for more details. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/io.h> +#include <linux/errno.h> +#include <asm/clock.h> +#include <asm/freq.h> + +#define SH7722_PLL_FREQ (32000000/8) +#define N (-1) +#define NM (-2) +#define ROUND_NEAREST 0 +#define ROUND_DOWN -1 +#define ROUND_UP +1 + +static int adjust_algos[][3] = { + {}, /* NO_CHANGE */ + { NM, N, 1 }, /* N:1, N:1 */ + { 3, 2, 2 }, /* 3:2:2 */ + { 5, 2, 2 }, /* 5:2:2 */ + { N, 1, 1 }, /* N:1:1 */ + + { N, 1 }, /* N:1 */ + + { N, 1 }, /* N:1 */ + { 3, 2 }, + { 4, 3 }, + { 5, 4 }, + + { N, 1 } +}; + +static unsigned long adjust_pair_of_clocks(unsigned long r1, unsigned long r2, + int m1, int m2, int round_flag) +{ + unsigned long rem, div; + int the_one = 0; + + pr_debug( "Actual values: r1 = %ld\n", r1); + pr_debug( "...............r2 = %ld\n", r2); + + if (m1 == m2) { + r2 = r1; + pr_debug( "setting equal rates: r2 now %ld\n", r2); + } else if ((m2 == N && m1 == 1) || + (m2 == NM && m1 == N)) { /* N:1 or NM:N */ + pr_debug( "Setting rates as 1:N (N:N*M)\n"); + rem = r2 % r1; + pr_debug( "...remainder = %ld\n", rem); + if (rem) { + div = r2 / r1; + pr_debug( "...div = %ld\n", div); + switch (round_flag) { + case ROUND_NEAREST: + the_one = rem >= r1/2 ? 1 : 0; break; + case ROUND_UP: + the_one = 1; break; + case ROUND_DOWN: + the_one = 0; break; + } + + r2 = r1 * (div + the_one); + pr_debug( "...setting r2 to %ld\n", r2); + } + } else if ((m2 == 1 && m1 == N) || + (m2 == N && m1 == NM)) { /* 1:N or N:NM */ + pr_debug( "Setting rates as N:1 (N*M:N)\n"); + rem = r1 % r2; + pr_debug( "...remainder = %ld\n", rem); + if (rem) { + div = r1 / r2; + pr_debug( "...div = %ld\n", div); + switch (round_flag) { + case ROUND_NEAREST: + the_one = rem > r2/2 ? 1 : 0; break; + case ROUND_UP: + the_one = 0; break; + case ROUND_DOWN: + the_one = 1; break; + } + + r2 = r1 / (div + the_one); + pr_debug( "...setting r2 to %ld\n", r2); + } + } else { /* value:value */ + pr_debug( "Setting rates as %d:%d\n", m1, m2); + div = r1 / m1; + r2 = div * m2; + pr_debug( "...div = %ld\n", div); + pr_debug( "...setting r2 to %ld\n", r2); + } + + return r2; +} + +static void adjust_clocks(int originate, int *l, unsigned long v[], + int n_in_line) +{ + int x; + + pr_debug( "Go down from %d...\n", originate); + /* go up recalculation clocks */ + for (x = originate; x>0; x -- ) + v[x-1] = adjust_pair_of_clocks(v[x], v[x-1], + l[x], l[x-1], + ROUND_UP); + + pr_debug( "Go up from %d...\n", originate); + /* go down recalculation clocks */ + for (x = originate; x<n_in_line - 1; x ++ ) + v[x+1] = adjust_pair_of_clocks(v[x], v[x+1], + l[x], l[x+1], + ROUND_UP); +} + + +/* + * SH7722 uses a common set of multipliers and divisors, so this + * is quite simple.. + */ + +/* + * Instead of having two separate multipliers/divisors set, like this: + * + * static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; + * static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 }; + * + * I created the divisors2 array, which is used to calculate rate like + * rate = parent * 2 / divisors2[ divisor ]; +*/ +static int divisors2[] = { 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40 }; + +static void master_clk_init(struct clk *clk) +{ + clk_set_rate(clk, clk_get_rate(clk)); +} + +static void master_clk_recalc(struct clk *clk) +{ + unsigned long frqcr = ctrl_inl(FRQCR); + + clk->rate = CONFIG_SH_PCLK_FREQ * (1 + (frqcr >> 24 & 0xF)); +} + +static int master_clk_setrate(struct clk *clk, unsigned long rate, int id) +{ + int div = rate / SH7722_PLL_FREQ; + int master_divs[] = { 2, 3, 4, 6, 8, 16 }; + int index; + unsigned long frqcr; + + if (rate < SH7722_PLL_FREQ * 2) + return -EINVAL; + + for (index = 1; index < ARRAY_SIZE(master_divs); index++) + if (div >= master_divs[index - 1] && div < master_divs[index]) + break; + + if (index >= ARRAY_SIZE(master_divs)) + index = ARRAY_SIZE(master_divs); + div = master_divs[index - 1]; + + frqcr = ctrl_inl(FRQCR); + frqcr &= ~(0xF << 24); + frqcr |= ( (div-1) << 24); + ctrl_outl(frqcr, FRQCR); + + return 0; +} + +static struct clk_ops sh7722_master_clk_ops = { + .init = master_clk_init, + .recalc = master_clk_recalc, + .set_rate = master_clk_setrate, +}; + +struct frqcr_context { + unsigned mask; + unsigned shift; +}; + +struct frqcr_context sh7722_get_clk_context(const char *name) +{ + struct frqcr_context ctx = { 0, }; + + if (!strcmp(name, "peripheral_clk")) { + ctx.shift = 0; + ctx.mask = 0xF; + } else if (!strcmp(name, "sdram_clk")) { + ctx.shift = 4; + ctx.mask = 0xF; + } else if (!strcmp(name, "bus_clk")) { + ctx.shift = 8; + ctx.mask = 0xF; + } else if (!strcmp(name, "sh_clk")) { + ctx.shift = 12; + ctx.mask = 0xF; + } else if (!strcmp(name, "umem_clk")) { + ctx.shift = 16; + ctx.mask = 0xF; + } else if (!strcmp(name, "cpu_clk")) { + ctx.shift = 20; + ctx.mask = 7; + } + return ctx; +} + +/** + * sh7722_find_divisors - find divisor for setting rate + * + * All sh7722 clocks use the same set of multipliers/divisors. This function + * chooses correct divisor to set the rate of clock with parent clock that + * generates frequency of 'parent_rate' + * + * @parent_rate: rate of parent clock + * @rate: requested rate to be set + */ +static int sh7722_find_divisors(unsigned long parent_rate, unsigned rate) +{ + unsigned div2 = parent_rate * 2 / rate; + int index; + + if (rate > parent_rate) + return -EINVAL; + + for (index = 1; index < ARRAY_SIZE(divisors2); index++) { + if (div2 > divisors2[index] && div2 <= divisors2[index]) + break; + } + if (index >= ARRAY_SIZE(divisors2)) + index = ARRAY_SIZE(divisors2) - 1; + return divisors2[index]; +} + +static void sh7722_frqcr_recalc(struct clk *clk) +{ + struct frqcr_context ctx = sh7722_get_clk_context(clk->name); + unsigned long frqcr = ctrl_inl(FRQCR); + int index; + + index = (frqcr >> ctx.shift) & ctx.mask; + clk->rate = clk->parent->rate * 2 / divisors2[index]; +} + +static int sh7722_frqcr_set_rate(struct clk *clk, unsigned long rate, + int algo_id) +{ + struct frqcr_context ctx = sh7722_get_clk_context(clk->name); + unsigned long parent_rate = clk->parent->rate; + int div; + unsigned long frqcr; + int err = 0; + + /* pretty invalid */ + if (parent_rate < rate) + return -EINVAL; + + /* look for multiplier/divisor pair */ + div = sh7722_find_divisors(parent_rate, rate); + if (div<0) + return div; + + /* calculate new value of clock rate */ + clk->rate = parent_rate * 2 / div; + frqcr = ctrl_inl(FRQCR); + + /* FIXME: adjust as algo_id specifies */ + if (algo_id != NO_CHANGE) { + int originator; + char *algo_group_1[] = { "cpu_clk", "umem_clk", "sh_clk" }; + char *algo_group_2[] = { "sh_clk", "bus_clk" }; + char *algo_group_3[] = { "sh_clk", "sdram_clk" }; + char *algo_group_4[] = { "bus_clk", "peripheral_clk" }; + char *algo_group_5[] = { "cpu_clk", "peripheral_clk" }; + char **algo_current = NULL; + /* 3 is the maximum number of clocks in relation */ + struct clk *ck[3]; + unsigned long values[3]; /* the same comment as above */ + int part_length = -1; + int i; + + /* + * all the steps below only required if adjustion was + * requested + */ + if (algo_id == IUS_N1_N1 || + algo_id == IUS_322 || + algo_id == IUS_522 || + algo_id == IUS_N11) { + algo_current = algo_group_1; + part_length = 3; + } + if (algo_id == SB_N1) { + algo_current = algo_group_2; + part_length = 2; + } + if (algo_id == SB3_N1 || + algo_id == SB3_32 || + algo_id == SB3_43 || + algo_id == SB3_54) { + algo_current = algo_group_3; + part_length = 2; + } + if (algo_id == BP_N1) { + algo_current = algo_group_4; + part_length = 2; + } + if (algo_id == IP_N1) { + algo_current = algo_group_5; + part_length = 2; + } + if (!algo_current) + goto incorrect_algo_id; + + originator = -1; + for (i = 0; i < part_length; i ++ ) { + if (originator >= 0 && !strcmp(clk->name, + algo_current[i])) + originator = i; + ck[i] = clk_get(NULL, algo_current[i]); + values[i] = clk_get_rate(ck[i]); + } + + if (originator >= 0) + adjust_clocks(originator, adjust_algos[algo_id], + values, part_length); + + for (i = 0; i < part_length; i ++ ) { + struct frqcr_context part_ctx; + int part_div; + + if (likely(!err)) { + part_div = sh7722_find_divisors(parent_rate, + rate); + if (part_div > 0) { + part_ctx = sh7722_get_clk_context( + ck[i]->name); + frqcr &= ~(part_ctx.mask << + part_ctx.shift); + frqcr |= part_div << part_ctx.shift; + } else + err = part_div; + } + + ck[i]->ops->recalc(ck[i]); + clk_put(ck[i]); + } + } + + /* was there any error during recalculation ? If so, bail out.. */ + if (unlikely(err!=0)) + goto out_err; + + /* clear FRQCR bits */ + frqcr &= ~(ctx.mask << ctx.shift); + frqcr |= div << ctx.shift; + + /* ...and perform actual change */ + ctrl_outl(frqcr, FRQCR); + return 0; + +incorrect_algo_id: + return -EINVAL; +out_err: + return err; +} + +static struct clk_ops sh7722_frqcr_clk_ops = { + .recalc = sh7722_frqcr_recalc, + .set_rate = sh7722_frqcr_set_rate, +}; + +/* + * clock ops methods for SIU A/B and IrDA clock + * + */ +static int sh7722_siu_which(struct clk *clk) +{ + if (!strcmp(clk->name, "siu_a_clk")) + return 0; + if (!strcmp(clk->name, "siu_b_clk")) + return 1; + if (!strcmp(clk->name, "irda_clk")) + return 2; + return -EINVAL; +} + +static unsigned long sh7722_siu_regs[] = { + [0] = SCLKACR, + [1] = SCLKBCR, + [2] = IrDACLKCR, +}; + +static int sh7722_siu_start_stop(struct clk *clk, int enable) +{ + int siu = sh7722_siu_which(clk); + unsigned long r; + + if (siu < 0) + return siu; + BUG_ON(siu > 2); + r = ctrl_inl(sh7722_siu_regs[siu]); + if (enable) + ctrl_outl(r & ~(1 << 8), sh7722_siu_regs[siu]); + else + ctrl_outl(r | (1 << 8), sh7722_siu_regs[siu]); + return 0; +} + +static void sh7722_siu_enable(struct clk *clk) +{ + sh7722_siu_start_stop(clk, 1); +} + +static void sh7722_siu_disable(struct clk *clk) +{ + sh7722_siu_start_stop(clk, 0); +} + +static void sh7722_video_enable(struct clk *clk) +{ + unsigned long r; + + r = ctrl_inl(VCLKCR); + ctrl_outl( r & ~(1<<8), VCLKCR); +} + +static void sh7722_video_disable(struct clk *clk) +{ + unsigned long r; + + r = ctrl_inl(VCLKCR); + ctrl_outl( r | (1<<8), VCLKCR); +} + +static int sh7722_video_set_rate(struct clk *clk, unsigned long rate, + int algo_id) +{ + unsigned long r; + + r = ctrl_inl(VCLKCR); + r &= ~0x3F; + r |= ((clk->parent->rate / rate - 1) & 0x3F); + ctrl_outl(r, VCLKCR); + return 0; +} + +static void sh7722_video_recalc(struct clk *clk) +{ + unsigned long r; + + r = ctrl_inl(VCLKCR); + clk->rate = clk->parent->rate / ((r & 0x3F) + 1); +} + +static int sh7722_siu_set_rate(struct clk *clk, unsigned long rate, int algo_id) +{ + int siu = sh7722_siu_which(clk); + unsigned long r; + int div; + + if (siu < 0) + return siu; + BUG_ON(siu > 2); + r = ctrl_inl(sh7722_siu_regs[siu]); + div = sh7722_find_divisors(clk->parent->rate, rate); + if (div < 0) + return div; + r = (r & ~0xF) | div; + ctrl_outl(r, sh7722_siu_regs[siu]); + return 0; +} + +static void sh7722_siu_recalc(struct clk *clk) +{ + int siu = sh7722_siu_which(clk); + unsigned long r; + + if (siu < 0) + return /* siu */ ; + BUG_ON(siu > 1); + r = ctrl_inl(sh7722_siu_regs[siu]); + clk->rate = clk->parent->rate * 2 / divisors2[r & 0xF]; +} + +static struct clk_ops sh7722_siu_clk_ops = { + .recalc = sh7722_siu_recalc, + .set_rate = sh7722_siu_set_rate, + .enable = sh7722_siu_enable, + .disable = sh7722_siu_disable, +}; + +static struct clk_ops sh7722_video_clk_ops = { + .recalc = sh7722_video_recalc, + .set_rate = sh7722_video_set_rate, + .enable = sh7722_video_enable, + .disable = sh7722_video_disable, +}; +/* + * and at last, clock definitions themselves + */ +static struct clk sh7722_umem_clock = { + .name = "umem_clk", + .ops = &sh7722_frqcr_clk_ops, +}; + +static struct clk sh7722_sh_clock = { + .name = "sh_clk", + .ops = &sh7722_frqcr_clk_ops, +}; + +static struct clk sh7722_peripheral_clock = { + .name = "peripheral_clk", + .ops = &sh7722_frqcr_clk_ops, +}; + +static struct clk sh7722_sdram_clock = { + .name = "sdram_clk", + .ops = &sh7722_frqcr_clk_ops, +}; + +/* + * these three clocks - SIU A, SIU B, IrDA - share the same clk_ops + * methods of clk_ops determine which register they should access by + * examining clk->name field + */ +static struct clk sh7722_siu_a_clock = { + .name = "siu_a_clk", + .ops = &sh7722_siu_clk_ops, +}; + +static struct clk sh7722_siu_b_clock = { + .name = "siu_b_clk", + .ops = &sh7722_siu_clk_ops, +}; + +static struct clk sh7722_irda_clock = { + .name = "irda_clk", + .ops = &sh7722_siu_clk_ops, +}; + +static struct clk sh7722_video_clock = { + .name = "video_clk", + .ops = &sh7722_video_clk_ops, +}; + +static struct clk *sh7722_clocks[] = { + &sh7722_umem_clock, + &sh7722_sh_clock, + &sh7722_peripheral_clock, + &sh7722_sdram_clock, + &sh7722_siu_a_clock, + &sh7722_siu_b_clock, + &sh7722_irda_clock, + &sh7722_video_clock, +}; + +/* + * init in order: master, module, bus, cpu + */ +struct clk_ops *onchip_ops[] = { + &sh7722_master_clk_ops, + &sh7722_frqcr_clk_ops, + &sh7722_frqcr_clk_ops, + &sh7722_frqcr_clk_ops, +}; + +void __init +arch_init_clk_ops(struct clk_ops **ops, int type) +{ + BUG_ON(type < 0 || type > ARRAY_SIZE(onchip_ops)); + *ops = onchip_ops[type]; +} + +int __init sh7722_clock_init(void) +{ + struct clk *master; + int i; + + master = clk_get(NULL, "master_clk"); + for (i = 0; i < ARRAY_SIZE(sh7722_clocks); i++) { + pr_debug( "Registering clock '%s'\n", sh7722_clocks[i]->name); + sh7722_clocks[i]->parent = master; + clk_register(sh7722_clocks[i]); + } + clk_put(master); + return 0; +} +arch_initcall(sh7722_clock_init); diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c new file mode 100644 index 00000000000..805535aa505 --- /dev/null +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c @@ -0,0 +1,162 @@ +/* + * arch/sh/kernel/cpu/sh4a/clock-sh7785.c + * + * SH7785 support for the clock framework + * + * Copyright (C) 2007 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 + * for more details. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <asm/clock.h> +#include <asm/freq.h> +#include <asm/io.h> + +static int ifc_divisors[] = { 1, 2, 4, 6 }; +static int ufc_divisors[] = { 1, 1, 4, 6 }; +static int sfc_divisors[] = { 1, 1, 4, 6 }; +static int bfc_divisors[] = { 1, 1, 1, 1, 1, 12, 16, 18, + 24, 32, 36, 48, 1, 1, 1, 1 }; +static int mfc_divisors[] = { 1, 1, 4, 6 }; +static int pfc_divisors[] = { 1, 1, 1, 1, 1, 1, 1, 18, + 24, 32, 36, 48, 1, 1, 1, 1 }; + +static void master_clk_init(struct clk *clk) +{ + clk->rate *= 36; +} + +static struct clk_ops sh7785_master_clk_ops = { + .init = master_clk_init, +}; + +static void module_clk_recalc(struct clk *clk) +{ + int idx = (ctrl_inl(FRQMR1) & 0x000f); + clk->rate = clk->parent->rate / pfc_divisors[idx]; +} + +static struct clk_ops sh7785_module_clk_ops = { + .recalc = module_clk_recalc, +}; + +static void bus_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inl(FRQMR1) >> 16) & 0x000f); + clk->rate = clk->parent->rate / bfc_divisors[idx]; +} + +static struct clk_ops sh7785_bus_clk_ops = { + .recalc = bus_clk_recalc, +}; + +static void cpu_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inl(FRQMR1) >> 28) & 0x0003); + clk->rate = clk->parent->rate / ifc_divisors[idx]; +} + +static struct clk_ops sh7785_cpu_clk_ops = { + .recalc = cpu_clk_recalc, +}; + +static struct clk_ops *sh7785_clk_ops[] = { + &sh7785_master_clk_ops, + &sh7785_module_clk_ops, + &sh7785_bus_clk_ops, + &sh7785_cpu_clk_ops, +}; + +void __init arch_init_clk_ops(struct clk_ops **ops, int idx) +{ + if (idx < ARRAY_SIZE(sh7785_clk_ops)) + *ops = sh7785_clk_ops[idx]; +} + +static void shyway_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inl(FRQMR1) >> 20) & 0x0003); + clk->rate = clk->parent->rate / sfc_divisors[idx]; +} + +static struct clk_ops sh7785_shyway_clk_ops = { + .recalc = shyway_clk_recalc, +}; + +static struct clk sh7785_shyway_clk = { + .name = "shyway_clk", + .flags = CLK_ALWAYS_ENABLED, + .ops = &sh7785_shyway_clk_ops, +}; + +static void ddr_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inl(FRQMR1) >> 12) & 0x0003); + clk->rate = clk->parent->rate / mfc_divisors[idx]; +} + +static struct clk_ops sh7785_ddr_clk_ops = { + .recalc = ddr_clk_recalc, +}; + +static struct clk sh7785_ddr_clk = { + .name = "ddr_clk", + .flags = CLK_ALWAYS_ENABLED, + .ops = &sh7785_ddr_clk_ops, +}; + +static void ram_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inl(FRQMR1) >> 24) & 0x0003); + clk->rate = clk->parent->rate / ufc_divisors[idx]; +} + +static struct clk_ops sh7785_ram_clk_ops = { + .recalc = ram_clk_recalc, +}; + +static struct clk sh7785_ram_clk = { + .name = "ram_clk", + .flags = CLK_ALWAYS_ENABLED, + .ops = &sh7785_ram_clk_ops, +}; + +/* + * Additional SH7785-specific on-chip clocks that aren't already part of the + * clock framework + */ +static struct clk *sh7785_onchip_clocks[] = { + &sh7785_shyway_clk, + &sh7785_ddr_clk, + &sh7785_ram_clk, +}; + +static int __init sh7785_clk_init(void) +{ + struct clk *clk = clk_get(NULL, "master_clk"); + int i; + + for (i = 0; i < ARRAY_SIZE(sh7785_onchip_clocks); i++) { + struct clk *clkp = sh7785_onchip_clocks[i]; + + clkp->parent = clk; + clk_register(clkp); + clk_enable(clkp); + } + + /* + * Now that we have the rest of the clocks registered, we need to + * force the parent clock to propagate so that these clocks will + * automatically figure out their rate. We cheat by handing the + * parent clock its current rate and forcing child propagation. + */ + clk_set_rate(clk, clk_get_rate(clk)); + + clk_put(clk); + + return 0; +} +arch_initcall(sh7785_clk_init); diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7785.c b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c new file mode 100644 index 00000000000..07b0de82cfe --- /dev/null +++ b/arch/sh/kernel/cpu/sh4a/setup-sh7785.c @@ -0,0 +1,103 @@ +/* + * SH7785 Setup + * + * Copyright (C) 2007 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 + * for more details. + */ +#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/serial.h> +#include <asm/sci.h> + +static struct plat_sci_port sci_platform_data[] = { + { + .mapbase = 0xffea0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 40, 41, 43, 42 }, + }, { + .mapbase = 0xffeb0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 44, 45, 47, 46 }, + }, + + /* + * The rest of these all have multiplexed IRQs + */ + { + .mapbase = 0xffec0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 60, 60, 60, 60 }, + }, { + .mapbase = 0xffed0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 61, 61, 61, 61 }, + }, { + .mapbase = 0xffee0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 62, 62, 62, 62 }, + }, { + .mapbase = 0xffef0000, + .flags = UPF_BOOT_AUTOCONF, + .type = PORT_SCIF, + .irqs = { 63, 63, 63, 63 }, + }, { + .flags = 0, + } +}; + +static struct platform_device sci_device = { + .name = "sh-sci", + .id = -1, + .dev = { + .platform_data = sci_platform_data, + }, +}; + +static struct platform_device *sh7785_devices[] __initdata = { + &sci_device, +}; + +static int __init sh7785_devices_setup(void) +{ + return platform_add_devices(sh7785_devices, + ARRAY_SIZE(sh7785_devices)); +} +__initcall(sh7785_devices_setup); + +static struct intc2_data intc2_irq_table[] = { + { 28, 0, 24, 0, 0, 2 }, /* TMU0 */ + + { 40, 8, 24, 0, 2, 3 }, /* SCIF0 ERI */ + { 41, 8, 24, 0, 2, 3 }, /* SCIF0 RXI */ + { 42, 8, 24, 0, 2, 3 }, /* SCIF0 BRI */ + { 43, 8, 24, 0, 2, 3 }, /* SCIF0 TXI */ + + { 44, 8, 16, 0, 3, 3 }, /* SCIF1 ERI */ + { 45, 8, 16, 0, 3, 3 }, /* SCIF1 RXI */ + { 46, 8, 16, 0, 3, 3 }, /* SCIF1 BRI */ + { 47, 8, 16, 0, 3, 3 }, /* SCIF1 TXI */ + + { 64, 0x14, 8, 0, 14, 2 }, /* PCIC0 */ + { 65, 0x14, 0, 0, 15, 2 }, /* PCIC1 */ + { 66, 0x18, 24, 0, 16, 2 }, /* PCIC2 */ + { 67, 0x18, 16, 0, 17, 2 }, /* PCIC3 */ + { 68, 0x18, 8, 0, 18, 2 }, /* PCIC4 */ + + { 60, 8, 8, 0, 4, 3 }, /* SCIF2 ERI, RXI, BRI, TXI */ + { 60, 8, 0, 0, 5, 3 }, /* SCIF3 ERI, RXI, BRI, TXI */ + { 60, 12, 24, 0, 6, 3 }, /* SCIF4 ERI, RXI, BRI, TXI */ + { 60, 12, 16, 0, 7, 3 }, /* SCIF5 ERI, RXI, BRI, TXI */ +}; + +void __init init_IRQ_intc2(void) +{ + make_intc2_irq(intc2_irq_table, ARRAY_SIZE(intc2_irq_table)); +} |