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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-19 10:02:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-19 10:02:26 -0700
commit07b75260ebc2c789724c594d7eaf0194fa47b3be (patch)
treed88b770bca479789e688d95e50aacd5d09b59b21 /drivers/cpufreq
parent0efacbbaee1e94e9942da0912f5b46ffd45a74bd (diff)
parent6e4ad1b413604b9130bdbe532aafdbd47ff5318e (diff)
downloadlinux-07b75260ebc2c789724c594d7eaf0194fa47b3be.tar.bz2
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: "This is the main pull request for MIPS for 4.7. Here's the summary of the changes: - ATH79: Support for DTB passuing using the UHI boot protocol - ATH79: Remove support for builtin DTB. - ATH79: Add zboot debug serial support. - ATH79: Add initial support for Dragino MS14 (Dragine 2), Onion Omega and DPT-Module. - ATH79: Update devicetree clock support for AR9132 and AR9331. - ATH79: Cleanup the DT code. - ATH79: Support newer SOCs in ath79_ddr_ctrl_init. - ATH79: Fix regression in PCI window initialization. - BCM47xx: Move SPROM driver to drivers/firmware/ - BCM63xx: Enable partition parser in defconfig. - BMIPS: BMIPS5000 has I cache filing from D cache - BMIPS: BMIPS: Add cpu-feature-overrides.h - BMIPS: Add Whirlwind support - BMIPS: Adjust mips-hpt-frequency for BCM7435 - BMIPS: Remove maxcpus from BCM97435SVMB DTS - BMIPS: Add missing 7038 L1 register cells to BCM7435 - BMIPS: Various tweaks to initialization code. - BMIPS: Enable partition parser in defconfig. - BMIPS: Cache tweaks. - BMIPS: Add UART, I2C and SATA devices to DT. - BMIPS: Add BCM6358 and BCM63268support - BMIPS: Add device tree example for BCM6358. - BMIPS: Improve Improve BCM6328 and BCM6368 device trees - Lantiq: Add support for device tree file from boot loader - Lantiq: Allow build with no built-in DT. - Loongson 3: Reserve 32MB for RS780E integrated GPU. - Loongson 3: Fix build error after ld-version.sh modification - Loongson 3: Move chipset ACPI code from drivers to arch. - Loongson 3: Speedup irq processing. - Loongson 3: Add basic Loongson 3A support. - Loongson 3: Set cache flush handlers to nop. - Loongson 3: Invalidate special TLBs when needed. - Loongson 3: Fast TLB refill handler. - MT7620: Fallback strategy for invalid syscfg0. - Netlogic: Fix CP0_EBASE redefinition warnings - Octeon: Initialization fixes - Octeon: Add DTS files for the D-Link DSR-1000N and EdgeRouter Lite - Octeon: Enable add Octeon-drivers in cavium_octeon_defconfig - Octeon: Correctly handle endian-swapped initramfs images. - Octeon: Support CN73xx, CN75xx and CN78xx. - Octeon: Remove dead code from cvmx-sysinfo. - Octeon: Extend number of supported CPUs past 32. - Octeon: Remove some code limiting NR_IRQS to 255. - Octeon: Simplify octeon_irq_ciu_gpio_set_type. - Octeon: Mark some functions __init in smp.c - Octeon: Octeon: Add Octeon III CN7xxx interface detection - PIC32: Add serial driver and bindings for it. - PIC32: Add PIC32 deadman timer driver and bindings. - PIC32: Add PIC32 clock timer driver and bindings. - Pistachio: Determine SoC revision during boot - Sibyte: Fix Kconfig dependencies of SIBYTE_BUS_WATCHER. - Sibyte: Strip redundant comments from bcm1480_regs.h. - Panic immediately if panic_on_oops is set. - module: fix incorrect IS_ERR_VALUE macro usage. - module: Make consistent use of pr_* - Remove no longer needed work_on_cpu() call. - Remove CONFIG_IPV6_PRIVACY from defconfigs. - Fix registers of non-crashing CPUs in dumps. - Handle MIPSisms in new vmcore_elf32_check_arch. - Select CONFIG_HANDLE_DOMAIN_IRQ and make it work. - Allow RIXI to be used on non-R2 or R6 cores. - Reserve nosave data for hibernation - Fix siginfo.h to use strict POSIX types. - Don't unwind user mode with EVA. - Fix watchpoint restoration - Ptrace watchpoints for R6. - Sync icache when it fills from dcache - I6400 I-cache fills from dcache. - Various MSA fixes. - Cleanup MIPS_CPU_* definitions. - Signal: Move generic copy_siginfo to signal.h - Signal: Fix uapi include in exported asm/siginfo.h - Timer fixes for sake of KVM. - XPA TLB refill fixes. - Treat perf counter feature - Update John Crispin's email address - Add PIC32 watchdog and bindings. - Handle R10000 LL/SC bug in set_pte() - cpufreq: Various fixes for Longson1. - R6: Fix R2 emulation. - mathemu: Cosmetic fix to ADDIUPC emulation, plenty of other small fixes - ELF: ABI and FP fixes. - Allow for relocatable kernel and use that to support KASLR. - Fix CPC_BASE_ADDR mask - Plenty fo smp-cps, CM, R6 and M6250 fixes. - Make reset_control_ops const. - Fix kernel command line handling of leading whitespace. - Cleanups to cache handling. - Add brcm, bcm6345-l1-intc device tree bindings. - Use generic clkdev.h header - Remove CLK_IS_ROOT usage. - Misc small cleanups. - CM: Fix compilation error when !MIPS_CM - oprofile: Fix a preemption issue - Detect DSP ASE v3 support:1" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (275 commits) MIPS: pic32mzda: fix getting timer clock rate. MIPS: ath79: fix regression in PCI window initialization MIPS: ath79: make ath79_ddr_ctrl_init() compatible for newer SoCs MIPS: Fix VZ probe gas errors with binutils <2.24 MIPS: perf: Fix I6400 event numbers MIPS: DEC: Export `ioasic_ssr_lock' to modules MIPS: MSA: Fix a link error on `_init_msa_upper' with older GCC MIPS: CM: Fix compilation error when !MIPS_CM MIPS: Fix genvdso error on rebuild USB: ohci-jz4740: Remove obsolete driver MIPS: JZ4740: Probe OHCI platform device via DT MIPS: JZ4740: Qi LB60: Remove support for AVT2 variant MIPS: pistachio: Determine SoC revision during boot MIPS: BMIPS: Adjust mips-hpt-frequency for BCM7435 mips: mt7620: fallback to SDRAM when syscfg0 does not have a valid value for the memory type MIPS: Prevent "restoration" of MSA context in non-MSA kernels MIPS: cevt-r4k: Dynamically calculate min_delta_ns MIPS: malta-time: Take seconds into account MIPS: malta-time: Start GIC count before syncing to RTC MIPS: Force CPUs to lose FP context during mode switches ...
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/Makefile2
-rw-r--r--drivers/cpufreq/loongson1-cpufreq.c (renamed from drivers/cpufreq/ls1x-cpufreq.c)114
2 files changed, 58 insertions, 58 deletions
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index e1eb11ee3570..0a9b6a093646 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -102,7 +102,7 @@ obj-$(CONFIG_CRIS_MACH_ARTPEC3) += cris-artpec3-cpufreq.o
obj-$(CONFIG_ETRAXFS) += cris-etraxfs-cpufreq.o
obj-$(CONFIG_IA64_ACPI_CPUFREQ) += ia64-acpi-cpufreq.o
obj-$(CONFIG_LOONGSON2_CPUFREQ) += loongson2_cpufreq.o
-obj-$(CONFIG_LOONGSON1_CPUFREQ) += ls1x-cpufreq.o
+obj-$(CONFIG_LOONGSON1_CPUFREQ) += loongson1-cpufreq.o
obj-$(CONFIG_SH_CPU_FREQ) += sh-cpufreq.o
obj-$(CONFIG_SPARC_US2E_CPUFREQ) += sparc-us2e-cpufreq.o
obj-$(CONFIG_SPARC_US3_CPUFREQ) += sparc-us3-cpufreq.o
diff --git a/drivers/cpufreq/ls1x-cpufreq.c b/drivers/cpufreq/loongson1-cpufreq.c
index 262581b3318d..be89416e2358 100644
--- a/drivers/cpufreq/ls1x-cpufreq.c
+++ b/drivers/cpufreq/loongson1-cpufreq.c
@@ -1,7 +1,7 @@
/*
* CPU Frequency Scaling for Loongson 1 SoC
*
- * Copyright (C) 2014 Zhang, Keguang <keguang.zhang@gmail.com>
+ * Copyright (C) 2014-2016 Zhang, Keguang <keguang.zhang@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
@@ -20,7 +20,7 @@
#include <cpufreq.h>
#include <loongson1.h>
-static struct {
+struct ls1x_cpufreq {
struct device *dev;
struct clk *clk; /* CPU clk */
struct clk *mux_clk; /* MUX of CPU clk */
@@ -28,7 +28,9 @@ static struct {
struct clk *osc_clk; /* OSC clk */
unsigned int max_freq;
unsigned int min_freq;
-} ls1x_cpufreq;
+};
+
+static struct ls1x_cpufreq *cpufreq;
static int ls1x_cpufreq_notifier(struct notifier_block *nb,
unsigned long val, void *data)
@@ -46,6 +48,7 @@ static struct notifier_block ls1x_cpufreq_notifier_block = {
static int ls1x_cpufreq_target(struct cpufreq_policy *policy,
unsigned int index)
{
+ struct device *cpu_dev = get_cpu_device(policy->cpu);
unsigned int old_freq, new_freq;
old_freq = policy->cur;
@@ -60,53 +63,49 @@ static int ls1x_cpufreq_target(struct cpufreq_policy *policy,
* - Reparent CPU clk back to CPU DIV clk
*/
- dev_dbg(ls1x_cpufreq.dev, "%u KHz --> %u KHz\n", old_freq, new_freq);
- clk_set_parent(policy->clk, ls1x_cpufreq.osc_clk);
+ clk_set_parent(policy->clk, cpufreq->osc_clk);
__raw_writel(__raw_readl(LS1X_CLK_PLL_DIV) | RST_CPU_EN | RST_CPU,
LS1X_CLK_PLL_DIV);
__raw_writel(__raw_readl(LS1X_CLK_PLL_DIV) & ~(RST_CPU_EN | RST_CPU),
LS1X_CLK_PLL_DIV);
- clk_set_rate(ls1x_cpufreq.mux_clk, new_freq * 1000);
- clk_set_parent(policy->clk, ls1x_cpufreq.mux_clk);
+ clk_set_rate(cpufreq->mux_clk, new_freq * 1000);
+ clk_set_parent(policy->clk, cpufreq->mux_clk);
+ dev_dbg(cpu_dev, "%u KHz --> %u KHz\n", old_freq, new_freq);
return 0;
}
static int ls1x_cpufreq_init(struct cpufreq_policy *policy)
{
+ struct device *cpu_dev = get_cpu_device(policy->cpu);
struct cpufreq_frequency_table *freq_tbl;
unsigned int pll_freq, freq;
int steps, i, ret;
- pll_freq = clk_get_rate(ls1x_cpufreq.pll_clk) / 1000;
+ pll_freq = clk_get_rate(cpufreq->pll_clk) / 1000;
steps = 1 << DIV_CPU_WIDTH;
- freq_tbl = kzalloc(sizeof(*freq_tbl) * steps, GFP_KERNEL);
- if (!freq_tbl) {
- dev_err(ls1x_cpufreq.dev,
- "failed to alloc cpufreq_frequency_table\n");
- ret = -ENOMEM;
- goto out;
- }
+ freq_tbl = kcalloc(steps, sizeof(*freq_tbl), GFP_KERNEL);
+ if (!freq_tbl)
+ return -ENOMEM;
for (i = 0; i < (steps - 1); i++) {
freq = pll_freq / (i + 1);
- if ((freq < ls1x_cpufreq.min_freq) ||
- (freq > ls1x_cpufreq.max_freq))
+ if ((freq < cpufreq->min_freq) || (freq > cpufreq->max_freq))
freq_tbl[i].frequency = CPUFREQ_ENTRY_INVALID;
else
freq_tbl[i].frequency = freq;
- dev_dbg(ls1x_cpufreq.dev,
+ dev_dbg(cpu_dev,
"cpufreq table: index %d: frequency %d\n", i,
freq_tbl[i].frequency);
}
freq_tbl[i].frequency = CPUFREQ_TABLE_END;
- policy->clk = ls1x_cpufreq.clk;
+ policy->clk = cpufreq->clk;
ret = cpufreq_generic_init(policy, freq_tbl, 0);
if (ret)
kfree(freq_tbl);
-out:
+
return ret;
}
@@ -138,85 +137,86 @@ static int ls1x_cpufreq_remove(struct platform_device *pdev)
static int ls1x_cpufreq_probe(struct platform_device *pdev)
{
- struct plat_ls1x_cpufreq *pdata = pdev->dev.platform_data;
+ struct plat_ls1x_cpufreq *pdata = dev_get_platdata(&pdev->dev);
struct clk *clk;
int ret;
- if (!pdata || !pdata->clk_name || !pdata->osc_clk_name)
+ if (!pdata || !pdata->clk_name || !pdata->osc_clk_name) {
+ dev_err(&pdev->dev, "platform data missing\n");
return -EINVAL;
+ }
- ls1x_cpufreq.dev = &pdev->dev;
+ cpufreq =
+ devm_kzalloc(&pdev->dev, sizeof(struct ls1x_cpufreq), GFP_KERNEL);
+ if (!cpufreq)
+ return -ENOMEM;
+
+ cpufreq->dev = &pdev->dev;
clk = devm_clk_get(&pdev->dev, pdata->clk_name);
if (IS_ERR(clk)) {
- dev_err(ls1x_cpufreq.dev, "unable to get %s clock\n",
+ dev_err(&pdev->dev, "unable to get %s clock\n",
pdata->clk_name);
- ret = PTR_ERR(clk);
- goto out;
+ return PTR_ERR(clk);
}
- ls1x_cpufreq.clk = clk;
+ cpufreq->clk = clk;
clk = clk_get_parent(clk);
if (IS_ERR(clk)) {
- dev_err(ls1x_cpufreq.dev, "unable to get parent of %s clock\n",
- __clk_get_name(ls1x_cpufreq.clk));
- ret = PTR_ERR(clk);
- goto out;
+ dev_err(&pdev->dev, "unable to get parent of %s clock\n",
+ __clk_get_name(cpufreq->clk));
+ return PTR_ERR(clk);
}
- ls1x_cpufreq.mux_clk = clk;
+ cpufreq->mux_clk = clk;
clk = clk_get_parent(clk);
if (IS_ERR(clk)) {
- dev_err(ls1x_cpufreq.dev, "unable to get parent of %s clock\n",
- __clk_get_name(ls1x_cpufreq.mux_clk));
- ret = PTR_ERR(clk);
- goto out;
+ dev_err(&pdev->dev, "unable to get parent of %s clock\n",
+ __clk_get_name(cpufreq->mux_clk));
+ return PTR_ERR(clk);
}
- ls1x_cpufreq.pll_clk = clk;
+ cpufreq->pll_clk = clk;
clk = devm_clk_get(&pdev->dev, pdata->osc_clk_name);
if (IS_ERR(clk)) {
- dev_err(ls1x_cpufreq.dev, "unable to get %s clock\n",
+ dev_err(&pdev->dev, "unable to get %s clock\n",
pdata->osc_clk_name);
- ret = PTR_ERR(clk);
- goto out;
+ return PTR_ERR(clk);
}
- ls1x_cpufreq.osc_clk = clk;
+ cpufreq->osc_clk = clk;
- ls1x_cpufreq.max_freq = pdata->max_freq;
- ls1x_cpufreq.min_freq = pdata->min_freq;
+ cpufreq->max_freq = pdata->max_freq;
+ cpufreq->min_freq = pdata->min_freq;
ret = cpufreq_register_driver(&ls1x_cpufreq_driver);
if (ret) {
- dev_err(ls1x_cpufreq.dev,
- "failed to register cpufreq driver: %d\n", ret);
- goto out;
+ dev_err(&pdev->dev,
+ "failed to register CPUFreq driver: %d\n", ret);
+ return ret;
}
ret = cpufreq_register_notifier(&ls1x_cpufreq_notifier_block,
CPUFREQ_TRANSITION_NOTIFIER);
- if (!ret)
- goto out;
-
- dev_err(ls1x_cpufreq.dev, "failed to register cpufreq notifier: %d\n",
- ret);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to register CPUFreq notifier: %d\n",ret);
+ cpufreq_unregister_driver(&ls1x_cpufreq_driver);
+ }
- cpufreq_unregister_driver(&ls1x_cpufreq_driver);
-out:
return ret;
}
static struct platform_driver ls1x_cpufreq_platdrv = {
- .driver = {
+ .probe = ls1x_cpufreq_probe,
+ .remove = ls1x_cpufreq_remove,
+ .driver = {
.name = "ls1x-cpufreq",
},
- .probe = ls1x_cpufreq_probe,
- .remove = ls1x_cpufreq_remove,
};
module_platform_driver(ls1x_cpufreq_platdrv);
MODULE_AUTHOR("Kelvin Cheung <keguang.zhang@gmail.com>");
-MODULE_DESCRIPTION("Loongson 1 CPUFreq driver");
+MODULE_DESCRIPTION("Loongson1 CPUFreq driver");
MODULE_LICENSE("GPL");