linaro-kernel August 2013

linaro-kernel@lists.linaro.org

110 participants
185 discussions

[PATCH V3 0/2] Add RTC DT node to Exynos5420 SoC and Fix RTC DT node name for 5250 Soc

by Vikas Sajjan

changes since v2: - split the 5250 related modifications into a separate patch. - placed the RTC node as per the alphabetical order in the DTS file as suggested by Kukjin Kim <kgene(a)kernel.org>. changes since v1: - made DT node status as "okay" in the dtsi file itself. - Vikas Sajjan (2): ARM: dts: Add RTC DT node to Exynos5420 SoC ARM: dts: Fix the RTC DT node name for Exynos5250 SoC arch/arm/boot/dts/exynos5.dtsi | 2 +- arch/arm/boot/dts/exynos5250.dtsi | 3 ++- arch/arm/boot/dts/exynos5420.dtsi | 6 ++++++ 3 files changed, 9 insertions(+), 2 deletions(-) -- 1.7.9.5

11 years, 5 months

[PATCH] ARM64: KVM: Fix coherent_icache_guest_page() for host with external L3-cache.

by Pranavkumar Sawargaonkar

Systems with large external L3-cache (few MBs), might have dirty content belonging to the guest page in L3-cache. To tackle this, we need to flush such dirty content from d-cache so that guest will see correct contents of guest page when guest MMU is disabled. The patch fixes coherent_icache_guest_page() for external L3-cache. Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar(a)linaro.org> Signed-off-by: Anup Patel <anup.patel(a)linaro.org> --- arch/arm64/include/asm/kvm_mmu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index efe609c..5129038 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -123,6 +123,8 @@ static inline void coherent_icache_guest_page(struct kvm *kvm, gfn_t gfn) if (!icache_is_aliasing()) { /* PIPT */ unsigned long hva = gfn_to_hva(kvm, gfn); flush_icache_range(hva, hva + PAGE_SIZE); + /* Flush d-cache for systems with external caches. */ + __flush_dcache_area((void *) hva, PAGE_SIZE); } else if (!icache_is_aivivt()) { /* non ASID-tagged VIVT */ /* any kind of VIPT cache */ __flush_icache_all(); -- 1.7.9.5

11 years, 5 months

[PATCH] ARM: dts: Enable USB hub on Arndale

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> The Arndale has a SMSC USB3503 connected in hardware only mode like a PHY, support it using the usb-nop-xceiv binding. Note that due to a regrettable decision to use a regulator to represent the reset signal this uses a fixed voltage regulator to do that, there is a plan to use the reset controller binding once that is merged so it does not seem worthwhile to fix the usb-nop-xceiv driver at this point. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- This doesn't 100% work right now since we don't yet have a solution to ensure that this gets started after the USB controller but those modifications are small (or can be done at runtime with module loading). arch/arm/boot/dts/exynos5250-arndale.dts | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts index 96d528d..e477e23 100644 --- a/arch/arm/boot/dts/exynos5250-arndale.dts +++ b/arch/arm/boot/dts/exynos5250-arndale.dts @@ -539,4 +539,22 @@ rtc { status = "okay"; }; + + usb_hub_bus { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <0>; + + // SMSC USB3503 connected in hardware only mode as a PHY + usb_hub: usb_hub { + compatible = "smsc,usb3503a"; + + reset-gpios = <&gpx3 5 1>; + connect-gpios = <&gpd1 7 1>; + }; + }; + + usb@12110000 { + usb-phy = <&usb2_phy>; + }; }; -- 1.8.4.rc2

11 years, 5 months

Re: [PATCH] cpufreq: add frequency table to at32ap driver

by Viresh Kumar

On 13 August 2013 00:40, Hans-Christian Egtvedt <egtvedt(a)samfundet.no> wrote: > This patch adds a dynamically calculated frequency table to the at32ap driver. > In short the architecture can scale in power of two between a maximum and > minimum frequency. Min, max, and the steps in between are added to the table. > > Signed-off-by: Hans-Christian Egtvedt <egtvedt(a)samfundet.no> > --- > drivers/cpufreq/at32ap-cpufreq.c | 47 +++++++++++++++++++++++++++++++++++++++- > 1 file changed, 46 insertions(+), 1 deletion(-) > > diff --git a/drivers/cpufreq/at32ap-cpufreq.c b/drivers/cpufreq/at32ap-cpufreq.c > index 6544887..dbf3f3d 100644 > --- a/drivers/cpufreq/at32ap-cpufreq.c > +++ b/drivers/cpufreq/at32ap-cpufreq.c > @@ -19,8 +19,10 @@ > #include <linux/clk.h> > #include <linux/err.h> > #include <linux/export.h> > +#include <linux/slab.h> > > static struct clk *cpuclk; > +static struct cpufreq_frequency_table *freq_table; > > static int at32_verify_speed(struct cpufreq_policy *policy) > { > @@ -85,13 +87,19 @@ static int at32_set_target(struct cpufreq_policy *policy, > > static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy) > { > + unsigned int frequency; > + int retval; > + int steps; > + int i; > + > if (policy->cpu != 0) > return -EINVAL; > > cpuclk = clk_get(NULL, "cpu"); > if (IS_ERR(cpuclk)) { > pr_debug("cpufreq: could not get CPU clk\n"); > - return PTR_ERR(cpuclk); > + retval = PTR_ERR(cpuclk); > + goto out_err; > } > > policy->cpuinfo.min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000; > @@ -101,9 +109,46 @@ static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy) > policy->min = policy->cpuinfo.min_freq; > policy->max = policy->cpuinfo.max_freq; > > + /* > + * AVR32 CPU frequency rate scales in power of two between maximum and > + * minimum, also add space for the table end marker. > + * > + * Further validate that the frequency is usable, and append it to the > + * frequency table. > + */ > + steps = fls(policy->cpuinfo.max_freq / policy->cpuinfo.min_freq) + 1; > + freq_table = kzalloc(steps * sizeof(struct cpufreq_frequency_table), > + GFP_KERNEL); > + if (!freq_table) { > + retval = -ENOMEM; > + goto out_err_put_clk; > + } > + > + frequency = policy->cpuinfo.max_freq; > + for (i = 0; i < (steps - 1); i++) { > + unsigned int rate = clk_round_rate(cpuclk, frequency * 1000); > + rate /= 1000; > + if (rate != frequency) > + freq_table[i].frequency = CPUFREQ_ENTRY_INVALID; > + else > + freq_table[i].frequency = frequency; > + frequency /= 2; > + } > + freq_table[steps - 1].frequency = CPUFREQ_TABLE_END; > + > + retval = cpufreq_frequency_table_cpuinfo(policy, freq_table); > + if (retval) > + goto out_err_kfree; > + > printk("cpufreq: AT32AP CPU frequency driver\n"); > > return 0; > +out_err_kfree: > + kfree(freq_table); > +out_err_put_clk: > + clk_put(cpuclk); > +out_err: > + return retval; > } > > static struct cpufreq_driver at32_driver = { Thanks for your patch, I have folded below patch with your patch while applying.. diff --git a/drivers/cpufreq/at32ap-cpufreq.c b/drivers/cpufreq/at32ap-cpufreq.c index eaac7cb..c586d3e 100644 --- a/drivers/cpufreq/at32ap-cpufreq.c +++ b/drivers/cpufreq/at32ap-cpufreq.c @@ -87,10 +87,8 @@ static int at32_set_target(struct cpufreq_policy *policy, static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy) { - unsigned int frequency; - int retval; - int steps; - int i; + unsigned int frequency, rate; + int retval, steps, i; if (policy->cpu != 0) return -EINVAL; @@ -126,20 +124,23 @@ static int __init at32_cpufreq_driver_init(struct cpufreq_policy *policy) frequency = policy->cpuinfo.max_freq; for (i = 0; i < (steps - 1); i++) { - unsigned int rate = clk_round_rate(cpuclk, frequency * 1000); - rate /= 1000; + rate = clk_round_rate(cpuclk, frequency * 1000) / 1000; + if (rate != frequency) freq_table[i].frequency = CPUFREQ_ENTRY_INVALID; else freq_table[i].frequency = frequency; + frequency /= 2; } + freq_table[steps - 1].frequency = CPUFREQ_TABLE_END; retval = cpufreq_frequency_table_cpuinfo(policy, freq_table); if (retval) goto out_err_kfree; + cpufreq_frequency_table_get_attr(freq_table, policy->cpu); printk("cpufreq: AT32AP CPU frequency driver\n"); return 0;

11 years, 5 months

[PATCH V2] ARM: dts: Add RTC DT node to Exynos5420 SoC

by Vikas Sajjan

Adds RTC DT node to Exynos5420 SoC. Signed-off-by: Vikas Sajjan <vikas.sajjan(a)linaro.org> --- changes since v1: - made DT node status as "okay" in the dtsi file itself. --- arch/arm/boot/dts/exynos5.dtsi | 2 +- arch/arm/boot/dts/exynos5250.dtsi | 3 ++- arch/arm/boot/dts/exynos5420.dtsi | 7 +++++++ 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/exynos5.dtsi b/arch/arm/boot/dts/exynos5.dtsi index f65e124..4a8e223 100644 --- a/arch/arm/boot/dts/exynos5.dtsi +++ b/arch/arm/boot/dts/exynos5.dtsi @@ -95,7 +95,7 @@ interrupts = <0 54 0>; }; - rtc { + rtc@101E0000 { compatible = "samsung,s3c6410-rtc"; reg = <0x101E0000 0x100>; interrupts = <0 43 0>, <0 44 0>; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 88589b7..c82137b 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -178,9 +178,10 @@ samsung,power-domain = <&pd_mfc>; }; - rtc { + rtc@101E0000 { clocks = <&clock 337>; clock-names = "rtc"; + status = "okay"; }; tmu@10060000 { diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index 9e90d1e..8f1bb08 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -145,4 +145,11 @@ clocks = <&clock 260>, <&clock 131>; clock-names = "uart", "clk_uart_baud0"; }; + + rtc@101E0000 { + clocks = <&clock 317>; + clock-names = "rtc"; + status = "okay"; + }; + }; -- 1.7.9.5

11 years, 5 months

[PATCH 1/2] net: asix: Staticise non-exported symbols

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Make functions that are only referenced from ops structures static, they do not need to be in the global namespace and sparse complains about this. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- drivers/net/usb/ax88172a.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/usb/ax88172a.c b/drivers/net/usb/ax88172a.c index d012203..723b387 100644 --- a/drivers/net/usb/ax88172a.c +++ b/drivers/net/usb/ax88172a.c @@ -161,7 +161,8 @@ static const struct net_device_ops ax88172a_netdev_ops = { .ndo_set_rx_mode = asix_set_multicast, }; -int ax88172a_get_settings(struct net_device *net, struct ethtool_cmd *cmd) +static int ax88172a_get_settings(struct net_device *net, + struct ethtool_cmd *cmd) { if (!net->phydev) return -ENODEV; @@ -169,7 +170,8 @@ int ax88172a_get_settings(struct net_device *net, struct ethtool_cmd *cmd) return phy_ethtool_gset(net->phydev, cmd); } -int ax88172a_set_settings(struct net_device *net, struct ethtool_cmd *cmd) +static int ax88172a_set_settings(struct net_device *net, + struct ethtool_cmd *cmd) { if (!net->phydev) return -ENODEV; @@ -177,7 +179,7 @@ int ax88172a_set_settings(struct net_device *net, struct ethtool_cmd *cmd) return phy_ethtool_sset(net->phydev, cmd); } -int ax88172a_nway_reset(struct net_device *net) +static int ax88172a_nway_reset(struct net_device *net) { if (!net->phydev) return -ENODEV; -- 1.8.4.rc1

11 years, 5 months

Is it OK to add an object file more than once in a Makefile?

by Jon Medhurst (Tixy)

E.g. in a Makefile to have obj-$(CONFIG_FOO) += common-thing.o foo.o obj-$(CONFIG_BAR) += common-thing.o bar.o where both FOO and BAR can be enabled at the same time? Looks a bit suspect to me. My instinct would be to invent CONFIG_BAZ to compile common-thing.o and make FOO and BAR select it. Or possibly some makefile conditional OR expression I can't think of off the top of my head. -- Tixy

11 years, 5 months

[PATCH] ASoC: pcm1681: Add DAPM support

by Mark Brown

From: Mark Brown <broonie(a)linaro.org> Provide DAPM for the device, ensuring operation with DAPM required by the core and making it easier to hook up external hardware to it. Signed-off-by: Mark Brown <broonie(a)linaro.org> --- sound/soc/codecs/pcm1681.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/sound/soc/codecs/pcm1681.c b/sound/soc/codecs/pcm1681.c index 51b1866..651ce09 100644 --- a/sound/soc/codecs/pcm1681.c +++ b/sound/soc/codecs/pcm1681.c @@ -206,6 +206,28 @@ static const struct snd_soc_dai_ops pcm1681_dai_ops = { .digital_mute = pcm1681_digital_mute, }; +static const struct snd_soc_dapm_widget pcm1681_dapm_widgets[] = { +SND_SOC_DAPM_OUTPUT("VOUT1"), +SND_SOC_DAPM_OUTPUT("VOUT2"), +SND_SOC_DAPM_OUTPUT("VOUT3"), +SND_SOC_DAPM_OUTPUT("VOUT4"), +SND_SOC_DAPM_OUTPUT("VOUT5"), +SND_SOC_DAPM_OUTPUT("VOUT6"), +SND_SOC_DAPM_OUTPUT("VOUT7"), +SND_SOC_DAPM_OUTPUT("VOUT8"), +}; + +static const struct snd_soc_dapm_route pcm1681_dapm_routes[] = { + { "VOUT1", NULL, "Playback" }, + { "VOUT2", NULL, "Playback" }, + { "VOUT3", NULL, "Playback" }, + { "VOUT4", NULL, "Playback" }, + { "VOUT5", NULL, "Playback" }, + { "VOUT6", NULL, "Playback" }, + { "VOUT7", NULL, "Playback" }, + { "VOUT8", NULL, "Playback" }, +}; + static const DECLARE_TLV_DB_SCALE(pcm1681_dac_tlv, -6350, 50, 1); static const struct snd_kcontrol_new pcm1681_controls[] = { @@ -258,6 +280,10 @@ static const struct regmap_config pcm1681_regmap = { static struct snd_soc_codec_driver soc_codec_dev_pcm1681 = { .controls = pcm1681_controls, .num_controls = ARRAY_SIZE(pcm1681_controls), + .dapm_widgets = pcm1681_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(pcm1681_dapm_widgets), + .dapm_routes = pcm1681_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(pcm1681_dapm_routes), }; static const struct i2c_device_id pcm1681_i2c_id[] = { -- 1.8.4.rc2

11 years, 5 months

[PATCH] ARM: signal: sigreturn_codes should be endian neutral to work in BE8

by Victor Kamensky

In case of BE8 kernel data is in BE order whereas code stays in LE order. sigreturn_codes array initializer need to use macros from <asm/opcodes.h> to setup instructions code in endian neutral way. Problem was discovered during ltp testing of BE system: all rt_sig* tests failed. Tested against the same tests in both BE and LE modes. Signed-off-by: Victor Kamensky <victor.kamensky(a)linaro.org> --- arch/arm/kernel/signal.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index ab33042..333a67f 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -20,25 +20,26 @@ #include <asm/ucontext.h> #include <asm/unistd.h> #include <asm/vfp.h> +#include <asm/opcodes.h> /* * For ARM syscalls, we encode the syscall number into the instruction. */ -#define SWI_SYS_SIGRETURN (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE)) -#define SWI_SYS_RT_SIGRETURN (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE)) +#define SWI_SYS_SIGRETURN (__opcode_to_mem_arm(0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))) +#define SWI_SYS_RT_SIGRETURN (__opcode_to_mem_arm(0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))) /* * With EABI, the syscall number has to be loaded into r7. */ -#define MOV_R7_NR_SIGRETURN (0xe3a07000 | (__NR_sigreturn - __NR_SYSCALL_BASE)) -#define MOV_R7_NR_RT_SIGRETURN (0xe3a07000 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE)) +#define MOV_R7_NR_SIGRETURN (__opcode_to_mem_arm(0xe3a07000 | (__NR_sigreturn - __NR_SYSCALL_BASE))) +#define MOV_R7_NR_RT_SIGRETURN (__opcode_to_mem_arm(0xe3a07000 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))) /* * For Thumb syscalls, we pass the syscall number via r7. We therefore * need two 16-bit instructions. */ -#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (__NR_sigreturn - __NR_SYSCALL_BASE)) -#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE)) +#define SWI_THUMB_SIGRETURN (__opcode_to_mem_arm(0xdf00 << 16 | 0x2700 | (__NR_sigreturn - __NR_SYSCALL_BASE))) +#define SWI_THUMB_RT_SIGRETURN (__opcode_to_mem_arm(0xdf00 << 16 | 0x2700 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))) static const unsigned long sigreturn_codes[7] = { MOV_R7_NR_SIGRETURN, SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, -- 1.8.1.4

11 years, 5 months

[GIT PULL]: CPUFreq: ARM Fixes for 3.12

by Viresh Kumar

Hi Rafael, The following changes since commit d4e4ab86bcba5a72779c43dc1459f71fea3d89c8: Linux 3.11-rc5 (2013-08-11 18:04:20 -0700) are available in the git repository at: git://git.linaro.org/people/vireshk/linux.git cpufreq-fixes for you to fetch changes up to 45e12086263a53f16b489fc7f4f8f6348a688661: cpufreq: fix EXYNOS drivers selection (2013-08-12 12:00:21 +0530) ---------------------------------------------------------------- Amit Daniel Kachhap (1): cpufreq: exynos5440: Fix to skip when new frequency same as current Bartlomiej Zolnierkiewicz (1): cpufreq: fix EXYNOS drivers selection drivers/cpufreq/Kconfig.arm | 36 ++++++++++++++++++++++++------------ drivers/cpufreq/exynos-cpufreq.c | 1 - drivers/cpufreq/exynos-cpufreq.h | 21 +++++++++++++++++++++ drivers/cpufreq/exynos5440-cpufreq.c | 3 +++ 4 files changed, 48 insertions(+), 13 deletions(-) -- viresh

11 years, 5 months

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linaro-kernel August 2013