From: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx> This patch adds the Altera Arria10 control & monitoring functions to the Arria10 System Resource chip. Signed-off-by: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx> --- MAINTAINERS | 1 + drivers/misc/Kconfig | 7 ++ drivers/misc/Makefile | 1 + drivers/misc/altera-a10sr-mon.c | 184 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 193 insertions(+) create mode 100644 drivers/misc/altera-a10sr-mon.c diff --git a/MAINTAINERS b/MAINTAINERS index 1cd38a7..a0919ec 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -625,6 +625,7 @@ M: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx> S: Maintained F: drivers/gpio/gpio-altera-a10sr.c F: drivers/mfd/altera-a10sr.c +F: drivers/misc/altera-a10sr-mon.c F: include/linux/mfd/altera-a10sr.h ALTERA TRIPLE SPEED ETHERNET DRIVER diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 64971ba..9dd33c4 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -766,6 +766,13 @@ config PANEL_BOOT_MESSAGE An empty message will only clear the display at driver init time. Any other printf()-formatted message is valid with newline and escape codes. +config ALTERA_A10SR_MON + tristate "Altera Arria10 System Resource Monitor" + depends on MFD_ALTERA_A10SR + help + This enables the System Resource monitor driver for the Altera + Arria10 DevKit. + source "drivers/misc/c2port/Kconfig" source "drivers/misc/eeprom/Kconfig" source "drivers/misc/cb710/Kconfig" diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 3198336..fd69f0c 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -43,6 +43,7 @@ obj-y += ti-st/ obj-y += lis3lv02d/ obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/ +obj-$(CONFIG_ALTERA_A10SR_MON) += altera-a10sr-mon.o obj-$(CONFIG_INTEL_MEI) += mei/ obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/ obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o diff --git a/drivers/misc/altera-a10sr-mon.c b/drivers/misc/altera-a10sr-mon.c new file mode 100644 index 0000000..c07fb97 --- /dev/null +++ b/drivers/misc/altera-a10sr-mon.c @@ -0,0 +1,184 @@ +/* + * Copyright Altera Corporation (C) 2014-2016. All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + * + * Monitor driver for the Altera Arria10 MAX5 System Resource Chip + * Adapted from ics932s401.c + */ + +#include <linux/err.h> +#include <linux/mfd/altera-a10sr.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +struct altr_a10sr_regs { + struct regmap *regmap; + struct attribute_group attr_grp; +}; + +static ssize_t a10sr_show(struct device *dev, + struct device_attribute *devattr, char *buf); +static ssize_t a10sr_store(struct device *dev, + struct device_attribute *devattr, const char *buf, + size_t count); + +/* Define FS entries */ +static DEVICE_ATTR(max5_version, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_led, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_button, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_button_irq, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_pg1, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_pg2, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_pg3, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_fmcab, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_hps_resets, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_per_resets, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_sfpa, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_sfpb, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_i2c_master, 0644, a10sr_show, a10sr_store); +static DEVICE_ATTR(max5_wm_rst, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_wm_rst_key, 0444, a10sr_show, NULL); +static DEVICE_ATTR(max5_pmbus, 0644, a10sr_show, a10sr_store); + +static struct attribute *altr_a10sr_attr[] = { + &dev_attr_max5_version.attr, + &dev_attr_max5_led.attr, + &dev_attr_max5_button.attr, + &dev_attr_max5_button_irq.attr, + &dev_attr_max5_pg1.attr, + &dev_attr_max5_pg2.attr, + &dev_attr_max5_pg3.attr, + &dev_attr_max5_fmcab.attr, + &dev_attr_max5_hps_resets.attr, + &dev_attr_max5_per_resets.attr, + &dev_attr_max5_sfpa.attr, + &dev_attr_max5_sfpb.attr, + &dev_attr_max5_i2c_master.attr, + &dev_attr_max5_wm_rst.attr, + &dev_attr_max5_wm_rst_key.attr, + &dev_attr_max5_pmbus.attr, + NULL +}; + +static const struct attribute_group a10sr_attr_group = { + .attrs = altr_a10sr_attr, +}; + +static ssize_t a10sr_show(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + int i, ret; + unsigned int val; + struct altr_a10sr_regs *a10sr_regs = dev_get_drvdata(dev); + + for (i = 0; i < ARRAY_SIZE(altr_a10sr_attr); i++) { + if (devattr == (struct device_attribute *)altr_a10sr_attr[i]) + break; + } + + if (i >= ARRAY_SIZE(altr_a10sr_attr)) + return -EINVAL; + + /* Shift because LS bit signifies Read/Write */ + i <<= 1; + ret = regmap_read(a10sr_regs->regmap, i, &val); + if (ret < 0) + return ret; + + return sprintf(buf, "0x%X\n", val); +} + +static ssize_t a10sr_store(struct device *dev, + struct device_attribute *devattr, const char *buf, + size_t count) +{ + struct altr_a10sr_regs *a10sr_regs = dev_get_drvdata(dev); + unsigned long val; + int i, ret; + + ret = kstrtol(buf, 0, &val); + if (ret < 0) + return ret; + + for (i = 0; i < ARRAY_SIZE(altr_a10sr_attr); i++) { + if (devattr == (struct device_attribute *)altr_a10sr_attr[i]) + break; + } + if (i >= ARRAY_SIZE(altr_a10sr_attr)) + return -EINVAL; + + /* Shift because LS bit signifies Read/Write */ + i <<= 1; + ret = regmap_write(a10sr_regs->regmap, i, val); + if (ret < 0) + return ret; + + return count; +} + +static int altr_a10sr_regs_probe(struct platform_device *pdev) +{ + int ret; + struct altr_a10sr_regs *a10regs; + struct altr_a10sr *a10sr = dev_get_drvdata(pdev->dev.parent); + + a10regs = devm_kzalloc(&pdev->dev, sizeof(*a10regs), GFP_KERNEL); + if (!a10regs) + return -ENOMEM; + + a10regs->regmap = a10sr->regmap; + a10regs->attr_grp = a10sr_attr_group; + + platform_set_drvdata(pdev, a10regs); + + ret = sysfs_create_group(&pdev->dev.kobj, &a10sr_attr_group); + if (ret) + goto err_mem; + + return 0; + +err_mem: + return ret; +} + +static int altr_a10sr_regs_remove(struct platform_device *pdev) +{ + struct altr_a10sr_regs *a10regs = platform_get_drvdata(pdev); + + sysfs_remove_group(&pdev->dev.kobj, &a10regs->attr_grp); + + return 0; +} + +static const struct of_device_id altr_a10sr_regs_of_match[] = { + { .compatible = "altr,a10sr-mon" }, + { }, +}; +MODULE_DEVICE_TABLE(of, altr_a10sr_regs_of_match); + +static struct platform_driver altr_a10sr_regs_driver = { + .probe = altr_a10sr_regs_probe, + .remove = altr_a10sr_regs_remove, + .driver = { + .name = "altr_a10sr_mon", + .of_match_table = altr_a10sr_regs_of_match, + }, +}; + +module_platform_driver(altr_a10sr_regs_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Thor Thayer"); +MODULE_DESCRIPTION("Monitor Driver for Altera Arria10 System Resource Chip"); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
