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author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-01-27 17:14:02 +0100 |
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committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-01-27 17:14:02 +0100 |
commit | 6c02b7b1610f873888af20f291c07730889ff0f9 (patch) | |
tree | 1b33e6642cc81605b8d37c0bda0abff0ba64fa2d /arch/c6x/include/asm/clock.h | |
parent | x86: xen: size struct xen_spinlock to always fit in arch_spinlock_t (diff) | |
parent | Linux 3.3-rc1 (diff) | |
download | linux-6c02b7b1610f873888af20f291c07730889ff0f9.tar.xz linux-6c02b7b1610f873888af20f291c07730889ff0f9.zip |
Merge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3
* commit 'v3.3-rc1': (9775 commits)
Linux 3.3-rc1
x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits
qnx4: don't leak ->BitMap on late failure exits
qnx4: reduce the insane nesting in qnx4_checkroot()
qnx4: di_fname is an array, for crying out loud...
KEYS: Permit key_serial() to be called with a const key pointer
keys: fix user_defined key sparse messages
ima: fix cred sparse warning
uml: fix compile for x86-64
MPILIB: Add a missing ENOMEM check
tpm: fix (ACPI S3) suspend regression
nvme: fix merge error due to change of 'make_request_fn' fn type
xen: using EXPORT_SYMBOL requires including export.h
gpio: tps65910: Use correct offset for gpio initialization
acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
intel_idle: Split up and provide per CPU initialization func
ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
tg3: Fix single-vector MSI-X code
openvswitch: Fix multipart datapath dumps.
ipv6: fix per device IP snmp counters
...
Diffstat (limited to 'arch/c6x/include/asm/clock.h')
-rw-r--r-- | arch/c6x/include/asm/clock.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/arch/c6x/include/asm/clock.h b/arch/c6x/include/asm/clock.h new file mode 100644 index 000000000000..bcf42b2b4b1e --- /dev/null +++ b/arch/c6x/include/asm/clock.h @@ -0,0 +1,148 @@ +/* + * TI C64X clock definitions + * + * Copyright (C) 2010, 2011 Texas Instruments. + * Contributed by: Mark Salter <msalter@redhat.com> + * + * Copied heavily from arm/mach-davinci/clock.h, so: + * + * Copyright (C) 2006-2007 Texas Instruments. + * Copyright (C) 2008-2009 Deep Root Systems, LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_C6X_CLOCK_H +#define _ASM_C6X_CLOCK_H + +#ifndef __ASSEMBLER__ + +#include <linux/list.h> + +/* PLL/Reset register offsets */ +#define PLLCTL 0x100 +#define PLLM 0x110 +#define PLLPRE 0x114 +#define PLLDIV1 0x118 +#define PLLDIV2 0x11c +#define PLLDIV3 0x120 +#define PLLPOST 0x128 +#define PLLCMD 0x138 +#define PLLSTAT 0x13c +#define PLLALNCTL 0x140 +#define PLLDCHANGE 0x144 +#define PLLCKEN 0x148 +#define PLLCKSTAT 0x14c +#define PLLSYSTAT 0x150 +#define PLLDIV4 0x160 +#define PLLDIV5 0x164 +#define PLLDIV6 0x168 +#define PLLDIV7 0x16c +#define PLLDIV8 0x170 +#define PLLDIV9 0x174 +#define PLLDIV10 0x178 +#define PLLDIV11 0x17c +#define PLLDIV12 0x180 +#define PLLDIV13 0x184 +#define PLLDIV14 0x188 +#define PLLDIV15 0x18c +#define PLLDIV16 0x190 + +/* PLLM register bits */ +#define PLLM_PLLM_MASK 0xff +#define PLLM_VAL(x) ((x) - 1) + +/* PREDIV register bits */ +#define PLLPREDIV_EN BIT(15) +#define PLLPREDIV_VAL(x) ((x) - 1) + +/* PLLCTL register bits */ +#define PLLCTL_PLLEN BIT(0) +#define PLLCTL_PLLPWRDN BIT(1) +#define PLLCTL_PLLRST BIT(3) +#define PLLCTL_PLLDIS BIT(4) +#define PLLCTL_PLLENSRC BIT(5) +#define PLLCTL_CLKMODE BIT(8) + +/* PLLCMD register bits */ +#define PLLCMD_GOSTAT BIT(0) + +/* PLLSTAT register bits */ +#define PLLSTAT_GOSTAT BIT(0) + +/* PLLDIV register bits */ +#define PLLDIV_EN BIT(15) +#define PLLDIV_RATIO_MASK 0x1f +#define PLLDIV_RATIO(x) ((x) - 1) + +struct pll_data; + +struct clk { + struct list_head node; + struct module *owner; + const char *name; + unsigned long rate; + int usecount; + u32 flags; + struct clk *parent; + struct list_head children; /* list of children */ + struct list_head childnode; /* parent's child list node */ + struct pll_data *pll_data; + u32 div; + unsigned long (*recalc) (struct clk *); + int (*set_rate) (struct clk *clk, unsigned long rate); + int (*round_rate) (struct clk *clk, unsigned long rate); +}; + +/* Clock flags: SoC-specific flags start at BIT(16) */ +#define ALWAYS_ENABLED BIT(1) +#define CLK_PLL BIT(2) /* PLL-derived clock */ +#define PRE_PLL BIT(3) /* source is before PLL mult/div */ +#define FIXED_DIV_PLL BIT(4) /* fixed divisor from PLL */ +#define FIXED_RATE_PLL BIT(5) /* fixed ouput rate PLL */ + +#define MAX_PLL_SYSCLKS 16 + +struct pll_data { + void __iomem *base; + u32 num; + u32 flags; + u32 input_rate; + u32 bypass_delay; /* in loops */ + u32 reset_delay; /* in loops */ + u32 lock_delay; /* in loops */ + struct clk sysclks[MAX_PLL_SYSCLKS + 1]; +}; + +/* pll_data flag bit */ +#define PLL_HAS_PRE BIT(0) +#define PLL_HAS_MUL BIT(1) +#define PLL_HAS_POST BIT(2) + +#define CLK(dev, con, ck) \ + { \ + .dev_id = dev, \ + .con_id = con, \ + .clk = ck, \ + } \ + +extern void c6x_clks_init(struct clk_lookup *clocks); +extern int clk_register(struct clk *clk); +extern void clk_unregister(struct clk *clk); +extern void c64x_setup_clocks(void); + +extern struct pll_data c6x_soc_pll1; + +extern struct clk clkin1; +extern struct clk c6x_core_clk; +extern struct clk c6x_i2c_clk; +extern struct clk c6x_watchdog_clk; +extern struct clk c6x_mcbsp1_clk; +extern struct clk c6x_mcbsp2_clk; +extern struct clk c6x_mdio_clk; + +#endif + +#endif /* _ASM_C6X_CLOCK_H */ |