From 4d3a3469dbabbcff4dab225bc3be0b247b36401c Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 13 Nov 2009 22:34:20 +0000 Subject: ARM: S3C24XX: machine support for Simtec Audio Add the platform/machine support for the audio devices fitted to the Simtec range of boards since the move to ASoC. Signed-off-by: Ben Dooks Signed-off-by: Simtec Linux Team Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/mach-anubis.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-s3c2440') diff --git a/arch/arm/mach-s3c2440/mach-anubis.c b/arch/arm/mach-s3c2440/mach-anubis.c index 68f3870..b8b9a42 100644 --- a/arch/arm/mach-s3c2440/mach-anubis.c +++ b/arch/arm/mach-s3c2440/mach-anubis.c @@ -53,8 +53,9 @@ #include #include #include +#include -#define COPYRIGHT ", (c) 2005 Simtec Electronics" +#define COPYRIGHT ", (c) 2005-2009 Simtec Electronics" static struct map_desc anubis_iodesc[] __initdata = { /* ISA IO areas */ @@ -437,6 +438,17 @@ static struct i2c_board_info anubis_i2c_devs[] __initdata = { } }; +/* Audio setup */ +static struct s3c24xx_audio_simtec_pdata __initdata anubis_audio = { + .have_mic = 1, + .have_lout = 1, + .output_cdclk = 1, + .use_mpllin = 1, + .amp_gpio = S3C2410_GPB(2), + .amp_gain[0] = S3C2410_GPD(10), + .amp_gain[1] = S3C2410_GPD(11), +}; + static void __init anubis_map_io(void) { /* initialise the clocks */ @@ -476,6 +488,7 @@ static void __init anubis_map_io(void) static void __init anubis_init(void) { s3c_i2c0_set_platdata(NULL); + simtec_audio_add(NULL, false, &anubis_audio); platform_add_devices(anubis_devices, ARRAY_SIZE(anubis_devices)); i2c_register_board_info(0, anubis_i2c_devs, -- cgit v1.1 From 4fa084af28ca905e91895ae237e6cc4a31d2ff4d Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 13 Nov 2009 22:34:21 +0000 Subject: ARM: OSIRIS: DVS (Dynamic Voltage Scaling) supoort. Add a driver to provide DVS for the Simtec Osiris module to reduce the power consumption whilst idling. The DVS driver alters the voltage supplied to the ARM core depending on the frequency it is running at. The driver itself does not do any of the frequency alteration, which is left up to the cpufreq driver. Signed-off-by: Ben Dooks Signed-off-by: Simtec Linux Team Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/Kconfig | 13 +++ arch/arm/mach-s3c2440/Makefile | 4 + arch/arm/mach-s3c2440/mach-osiris-dvs.c | 194 ++++++++++++++++++++++++++++++++ arch/arm/mach-s3c2440/mach-osiris.c | 34 ++++++ 4 files changed, 245 insertions(+) create mode 100644 arch/arm/mach-s3c2440/mach-osiris-dvs.c (limited to 'arch/arm/mach-s3c2440') diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig index a8b69d7..cf10e14 100644 --- a/arch/arm/mach-s3c2440/Kconfig +++ b/arch/arm/mach-s3c2440/Kconfig @@ -53,6 +53,19 @@ config MACH_OSIRIS Say Y here if you are using the Simtec IM2440D20 module, also known as the Osiris. +config MACH_OSIRIS_DVS + tristate "Simtec IM2440D20 (OSIRIS) Dynamic Voltage Scaling driver" + depends on MACH_OSIRIS + select TPS65010 + help + Say Y/M here if you want to have dynamic voltage scaling support + on the Simtec IM2440D20 (OSIRIS) module via the TPS65011. + + The DVS driver alters the voltage supplied to the ARM core + depending on the frequency it is running at. The driver itself + does not do any of the frequency alteration, which is left up + to the cpufreq driver. + config MACH_RX3715 bool "HP iPAQ rx3715" select CPU_S3C2440 diff --git a/arch/arm/mach-s3c2440/Makefile b/arch/arm/mach-s3c2440/Makefile index bfadcf6..5f32245 100644 --- a/arch/arm/mach-s3c2440/Makefile +++ b/arch/arm/mach-s3c2440/Makefile @@ -23,3 +23,7 @@ obj-$(CONFIG_ARCH_S3C2440) += mach-smdk2440.o obj-$(CONFIG_MACH_NEXCODER_2440) += mach-nexcoder.o obj-$(CONFIG_MACH_AT2440EVB) += mach-at2440evb.o obj-$(CONFIG_MACH_MINI2440) += mach-mini2440.o + +# extra machine support + +obj-$(CONFIG_MACH_OSIRIS_DVS) += mach-osiris-dvs.o diff --git a/arch/arm/mach-s3c2440/mach-osiris-dvs.c b/arch/arm/mach-s3c2440/mach-osiris-dvs.c new file mode 100644 index 0000000..ad2792d --- /dev/null +++ b/arch/arm/mach-s3c2440/mach-osiris-dvs.c @@ -0,0 +1,194 @@ +/* linux/arch/arm/mach-s3c2440/mach-osiris-dvs.c + * + * Copyright (c) 2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + * + * Simtec Osiris Dynamic Voltage Scaling support. + * + * 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. +*/ + +#include +#include +#include +#include +#include + +#include + +#include + +#define OSIRIS_GPIO_DVS S3C2410_GPB(5) + +static bool dvs_en; + +static void osiris_dvs_tps_setdvs(bool on) +{ + unsigned vregs1 = 0, vdcdc2 = 0; + + if (!on) { + vdcdc2 = TPS_VCORE_DISCH | TPS_LP_COREOFF; + vregs1 = TPS_LDO1_OFF; /* turn off in low-power mode */ + } + + dvs_en = on; + vdcdc2 |= TPS_VCORE_1_3V | TPS_VCORE_LP_1_0V; + vregs1 |= TPS_LDO2_ENABLE | TPS_LDO1_ENABLE; + + tps65010_config_vregs1(vregs1); + tps65010_config_vdcdc2(vdcdc2); +} + +static bool is_dvs(struct s3c_freq *f) +{ + /* at the moment, we assume ARMCLK = HCLK => DVS */ + return f->armclk == f->hclk; +} + +/* keep track of current state */ +static bool cur_dvs = false; + +static int osiris_dvs_notify(struct notifier_block *nb, + unsigned long val, void *data) +{ + struct cpufreq_freqs *cf = data; + struct s3c_cpufreq_freqs *freqs = to_s3c_cpufreq(cf); + bool old_dvs = is_dvs(&freqs->old); + bool new_dvs = is_dvs(&freqs->new); + int ret = 0; + + if (!dvs_en) + return 0; + + printk(KERN_DEBUG "%s: old %ld,%ld new %ld,%ld\n", __func__, + freqs->old.armclk, freqs->old.hclk, + freqs->new.armclk, freqs->new.hclk); + + switch (val) { + case CPUFREQ_PRECHANGE: + if (old_dvs & !new_dvs || + cur_dvs & !new_dvs) { + pr_debug("%s: exiting dvs\n", __func__); + cur_dvs = false; + gpio_set_value(OSIRIS_GPIO_DVS, 1); + } + break; + case CPUFREQ_POSTCHANGE: + if (!old_dvs & new_dvs || + !cur_dvs & new_dvs) { + pr_debug("entering dvs\n"); + cur_dvs = true; + gpio_set_value(OSIRIS_GPIO_DVS, 0); + } + break; + } + + return ret; +} + +static struct notifier_block osiris_dvs_nb = { + .notifier_call = osiris_dvs_notify, +}; + +static int __devinit osiris_dvs_probe(struct platform_device *pdev) +{ + int ret; + + dev_info(&pdev->dev, "initialising\n"); + + ret = gpio_request(OSIRIS_GPIO_DVS, "osiris-dvs"); + if (ret) { + dev_err(&pdev->dev, "cannot claim gpio\n"); + goto err_nogpio; + } + + /* start with dvs disabled */ + gpio_direction_output(OSIRIS_GPIO_DVS, 1); + + ret = cpufreq_register_notifier(&osiris_dvs_nb, + CPUFREQ_TRANSITION_NOTIFIER); + if (ret) { + dev_err(&pdev->dev, "failed to register with cpufreq\n"); + goto err_nofreq; + } + + osiris_dvs_tps_setdvs(true); + + return 0; + +err_nofreq: + gpio_free(OSIRIS_GPIO_DVS); + +err_nogpio: + return ret; +} + +static int __devexit osiris_dvs_remove(struct platform_device *pdev) +{ + dev_info(&pdev->dev, "exiting\n"); + + /* disable any current dvs */ + gpio_set_value(OSIRIS_GPIO_DVS, 1); + osiris_dvs_tps_setdvs(false); + + cpufreq_unregister_notifier(&osiris_dvs_nb, + CPUFREQ_TRANSITION_NOTIFIER); + + gpio_free(OSIRIS_GPIO_DVS); + + return 0; +} + +/* the CONFIG_PM block is so small, it isn't worth actaully compiling it + * out if the configuration isn't set. */ + +static int osiris_dvs_suspend(struct device *dev) +{ + gpio_set_value(OSIRIS_GPIO_DVS, 1); + osiris_dvs_tps_setdvs(false); + cur_dvs = false; + + return 0; +} + +static int osiris_dvs_resume(struct device *dev) +{ + osiris_dvs_tps_setdvs(true); + return 0; +} + +static const struct dev_pm_ops osiris_dvs_pm = { + .suspend = osiris_dvs_suspend, + .resume = osiris_dvs_resume, +}; + +static struct platform_driver osiris_dvs_driver = { + .probe = osiris_dvs_probe, + .remove = __devexit_p(osiris_dvs_remove), + .driver = { + .name = "osiris-dvs", + .owner = THIS_MODULE, + .pm = &osiris_dvs_pm, + }, +}; + +static int __init osiris_dvs_init(void) +{ + return platform_driver_register(&osiris_dvs_driver); +} + +static void __exit osiris_dvs_exit(void) +{ + platform_driver_unregister(&osiris_dvs_driver); +} + +module_init(osiris_dvs_init); +module_exit(osiris_dvs_exit); + +MODULE_DESCRIPTION("Simtec OSIRIS DVS support"); +MODULE_AUTHOR("Ben Dooks "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:osiris-dvs"); diff --git a/arch/arm/mach-s3c2440/mach-osiris.c b/arch/arm/mach-s3c2440/mach-osiris.c index 2105a41..8af9e9a 100644 --- a/arch/arm/mach-s3c2440/mach-osiris.c +++ b/arch/arm/mach-s3c2440/mach-osiris.c @@ -23,6 +23,8 @@ #include #include +#include + #include #include #include @@ -326,12 +328,44 @@ static struct sys_device osiris_pm_sysdev = { .cls = &osiris_pm_sysclass, }; +/* Link for DVS driver to TPS65011 */ + +static void osiris_tps_release(struct device *dev) +{ + /* static device, do not need to release anything */ +} + +static struct platform_device osiris_tps_device = { + .name = "osiris-dvs", + .id = -1, + .dev.release = osiris_tps_release, +}; + +static int osiris_tps_setup(struct i2c_client *client, void *context) +{ + osiris_tps_device.dev.parent = &client->dev; + return platform_device_register(&osiris_tps_device); +} + +static int osiris_tps_remove(struct i2c_client *client, void *context) +{ + platform_device_unregister(&osiris_tps_device); + return 0; +} + +static struct tps65010_board osiris_tps_board = { + .base = -1, /* GPIO can go anywhere at the moment */ + .setup = osiris_tps_setup, + .teardown = osiris_tps_remove, +}; + /* I2C devices fitted. */ static struct i2c_board_info osiris_i2c_devs[] __initdata = { { I2C_BOARD_INFO("tps65011", 0x48), .irq = IRQ_EINT20, + .platform_data = &osiris_tps_board, }, }; -- cgit v1.1 From 50f430e3ad22191744e61a4d6ff72af583a379c0 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 13 Nov 2009 22:54:12 +0000 Subject: ARM: S3C: Fix Simtec copyright statements in Documentation/S3C24XX The (c) alone is not a sufficient copyright statement, nor is it a good replacement for the proper encircled © symbol [1]. Add the word copyright to the apropriate places and remove the (c) symbol. [1] http://www.copyrightservice.co.uk/copyright/p03_copyright_notices section 4 'What does a notice consist of?' Signed-off-by: Ben Dooks Signed-off-by: Simtec Linux Team Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/mach-anubis.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-s3c2440') diff --git a/arch/arm/mach-s3c2440/mach-anubis.c b/arch/arm/mach-s3c2440/mach-anubis.c index b8b9a42..c3705b9 100644 --- a/arch/arm/mach-s3c2440/mach-anubis.c +++ b/arch/arm/mach-s3c2440/mach-anubis.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2440/mach-anubis.c * - * Copyright (c) 2003-2005,2008 Simtec Electronics + * Copyright 2003-2009 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks * @@ -55,7 +55,7 @@ #include #include -#define COPYRIGHT ", (c) 2005-2009 Simtec Electronics" +#define COPYRIGHT ", Copyright 2005-2009 Simtec Electronics" static struct map_desc anubis_iodesc[] __initdata = { /* ISA IO areas */ -- cgit v1.1 From e02f866456ec31d20649670e3af048ddc2a3892b Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 13 Nov 2009 22:54:13 +0000 Subject: ARM: S3C: Update Simtec copyright statements from , to - There are a number of statements of the form A, B or A, B, C where the numbers A,B,C are consecutive. Tidy these up to be A-B or A-C as appropriate and to comply better with copyright standards [1] [1] http://www.copyrightservice.co.uk/copyright/p03_copyright_notices section 4iii 'Year of publication' Signed-off-by: Ben Dooks Signed-off-by: Simtec Linux Team Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/irq.c | 2 +- arch/arm/mach-s3c2440/mach-rx3715.c | 2 +- arch/arm/mach-s3c2440/mach-smdk2440.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-s3c2440') diff --git a/arch/arm/mach-s3c2440/irq.c b/arch/arm/mach-s3c2440/irq.c index 63c5ab65..0c049b9 100644 --- a/arch/arm/mach-s3c2440/irq.c +++ b/arch/arm/mach-s3c2440/irq.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2440/irq.c * - * Copyright (c) 2003,2004 Simtec Electronics + * Copyright (c) 2003-2004 Simtec Electronics * Ben Dooks * * This program is free software; you can redistribute it and/or modify diff --git a/arch/arm/mach-s3c2440/mach-rx3715.c b/arch/arm/mach-s3c2440/mach-rx3715.c index bc8d8d1..e394ecd 100644 --- a/arch/arm/mach-s3c2440/mach-rx3715.c +++ b/arch/arm/mach-s3c2440/mach-rx3715.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2440/mach-rx3715.c * - * Copyright (c) 2003,2004 Simtec Electronics + * Copyright (c) 2003-2004 Simtec Electronics * Ben Dooks * * http://www.handhelds.org/projects/rx3715.html diff --git a/arch/arm/mach-s3c2440/mach-smdk2440.c b/arch/arm/mach-s3c2440/mach-smdk2440.c index db6eafb..ec13e74 100644 --- a/arch/arm/mach-s3c2440/mach-smdk2440.c +++ b/arch/arm/mach-s3c2440/mach-smdk2440.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2440/mach-smdk2440.c * - * Copyright (c) 2004,2005 Simtec Electronics + * Copyright (c) 2004-2005 Simtec Electronics * Ben Dooks * * http://www.fluff.org/ben/smdk2440/ -- cgit v1.1 From ccae941ee2de58b9391f4e166b1bad33fcbfc119 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 13 Nov 2009 22:54:14 +0000 Subject: ARM: S3C: Update Simtec copyright statements from , to - [2] There are a number of statements of the form A, B or A, B, C where the numbers A,B,C are not consecutive. However, referencing [1] it is the correct thing to replace these with A-B or A-C as apropriate. [1] http://www.copyrightservice.co.uk/copyright/p03_copyright_notices section 4iii 'Year of publication' Signed-off-by: Ben Dooks Signed-off-by: Simtec Linux Team Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/mach-osiris.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/mach-s3c2440') diff --git a/arch/arm/mach-s3c2440/mach-osiris.c b/arch/arm/mach-s3c2440/mach-osiris.c index 8af9e9a..9b04de2 100644 --- a/arch/arm/mach-s3c2440/mach-osiris.c +++ b/arch/arm/mach-s3c2440/mach-osiris.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2440/mach-osiris.c * - * Copyright (c) 2005,2008 Simtec Electronics + * Copyright (c) 2005-2008 Simtec Electronics * http://armlinux.simtec.co.uk/ * Ben Dooks * -- cgit v1.1