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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-14 22:38:28 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-14 22:38:28 (GMT) |
commit | 6a57d104c8cb5b6adad6784b4ce6e2f7f9961a3a (patch) | |
tree | c3ff93b006d7483ccee09799d215b03b1bbc3f1b /arch/arm/plat-samsung | |
parent | cebfa85eb86d92bf85d3b041c6b044184517a988 (diff) | |
parent | c91321e8ff338a88a9272dcd938f085955cd5846 (diff) | |
download | linux-fsl-qoriq-6a57d104c8cb5b6adad6784b4ce6e2f7f9961a3a.tar.xz |
Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM Soc updates, take 2, from Olof Johansson:
"This is the second batch of SoC updates for the 3.8 merge window,
containing parts that had dependencies on earlier branches such that
we couldn't include them with the first branch.
These are general updates for Samsung Exynos, Renesas/shmobile and a
topic branch that adds SMP support to Altera's socfpga platform."
Fix up conflicts mostly as per Olof.
* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: EXYNOS: Clock settings for SATA and SATA PHY
ARM: EXYNOS: Add ARM down clock support
ARM: EXYNOS: Fix i2c suspend/resume for legacy controller
ARM: EXYNOS: Add aliases for i2c controller
ARM: EXYNOS: Setup legacy i2c controller interrupts
sh: clkfwk: fixup unsed variable warning
Revert "ARM: shmobile: r8a7779: Replace modify_scu_cpu_psr with scu_power_mode"
Revert "ARM: shmobile: sh73a0: Replace modify_scu_cpu_psr with scu_power_mode"
Revert "ARM: shmobile: emev2: Replace modify_scu_cpu_psr with scu_power_mode"
ARM: highbank: use common debug_ll_io_init
ARM: shmobile: sh7372: sh7372_fsiXck_clk become non-global
ARM: shmobile: sh7372: remove fsidivx clock
ARM: socfpga: mark secondary_trampoline as cpuinit
socfpga: map uart into virtual address space so that early_printk() works
ARM: socfpga: fix build break for allyesconfig
ARM: socfpga: Enable SMP for socfpga
ARM: EXYNOS: Add dp clock support for EXYNOS5
ARM: SAMSUNG: call clk_get_rate for debugfs rate files
ARM: SAMSUNG: add clock_tree debugfs file in clock
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r-- | arch/arm/plat-samsung/clock.c | 75 |
1 files changed, 73 insertions, 2 deletions
diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 012bbd0..47c9fad 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -389,6 +389,72 @@ int __init s3c24xx_register_baseclocks(unsigned long xtal) static struct dentry *clk_debugfs_root; +static void clock_tree_show_one(struct seq_file *s, struct clk *c, int level) +{ + struct clk *child; + const char *state; + char buf[255] = { 0 }; + int n = 0; + + if (c->name) + n = snprintf(buf, sizeof(buf) - 1, "%s", c->name); + + if (c->devname) + n += snprintf(buf + n, sizeof(buf) - 1 - n, ":%s", c->devname); + + state = (c->usage > 0) ? "on" : "off"; + + seq_printf(s, "%*s%-*s %-6s %-3d %-10lu\n", + level * 3 + 1, "", + 50 - level * 3, buf, + state, c->usage, clk_get_rate(c)); + + list_for_each_entry(child, &clocks, list) { + if (child->parent != c) + continue; + + clock_tree_show_one(s, child, level + 1); + } +} + +static int clock_tree_show(struct seq_file *s, void *data) +{ + struct clk *c; + unsigned long flags; + + seq_printf(s, " clock state ref rate\n"); + seq_printf(s, "----------------------------------------------------\n"); + + spin_lock_irqsave(&clocks_lock, flags); + + list_for_each_entry(c, &clocks, list) + if (c->parent == NULL) + clock_tree_show_one(s, c, 0); + + spin_unlock_irqrestore(&clocks_lock, flags); + return 0; +} + +static int clock_tree_open(struct inode *inode, struct file *file) +{ + return single_open(file, clock_tree_show, inode->i_private); +} + +static const struct file_operations clock_tree_fops = { + .open = clock_tree_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int clock_rate_show(void *data, u64 *val) +{ + struct clk *c = data; + *val = clk_get_rate(c); + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(clock_rate_fops, clock_rate_show, NULL, "%llu\n"); + static int clk_debugfs_register_one(struct clk *c) { int err; @@ -411,7 +477,7 @@ static int clk_debugfs_register_one(struct clk *c) goto err_out; } - d = debugfs_create_u32("rate", S_IRUGO, c->dent, (u32 *)&c->rate); + d = debugfs_create_file("rate", S_IRUGO, c->dent, c, &clock_rate_fops); if (!d) { err = -ENOMEM; goto err_out; @@ -446,13 +512,18 @@ static int __init clk_debugfs_init(void) { struct clk *c; struct dentry *d; - int err; + int err = -ENOMEM; d = debugfs_create_dir("clock", NULL); if (!d) return -ENOMEM; clk_debugfs_root = d; + d = debugfs_create_file("clock_tree", S_IRUGO, clk_debugfs_root, NULL, + &clock_tree_fops); + if (!d) + goto err_out; + list_for_each_entry(c, &clocks, list) { err = clk_debugfs_register(c); if (err) |