aboutsummaryrefslogtreecommitdiffstats
path: root/package/utils/secilc/Makefile
Commit message (Expand)AuthorAgeFilesLines
* seclic: depends on libsepolDaniel Golle2020-10-091-0/+1
* secilc: adds new packageDominick Grift2020-10-091-0/+65
'#n12'>12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384
/*
*  APU2 LED/GPIO Driver
*  Copyright (c) 2016 Christian Lamparter <chunkeey (at) googlemail.com>
*
*  Based on gpio-apu2.c - AMD FCH GPIO support for PC-Engines APU-2 board
*
*  Copyright (c) 2015  Carsten Spiess <fli4l at carsten-spiess.de>
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  This program is distributed in the hope that 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, write to the Free Software
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <linux/module.h>
#include <linux/types.h>
#include <linux/miscdevice.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/version.h>
#include <linux/dmi.h>
#include <linux/string.h>

#include <linux/leds.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#define DEVNAME                 "leds-apu2"

#define FCH_ACPI_MMIO_BASE      0xFED80000
#define FCH_GPIO_BASE           (FCH_ACPI_MMIO_BASE + 0x1500)
#define FCH_GPIO_SIZE           0x300

#define APU_NUM_GPIO            4

#define GPIO_BIT_DIR            23
#define GPIO_BIT_WRITE          22
#define GPIO_BIT_READ           16

/* internal variables */
static struct pci_dev *gpio_apu2_pci;
static DEFINE_SPINLOCK (gpio_lock);

/* the watchdog platform device */
static struct platform_device *gpio_apu2_platform_device;
static struct platform_device *leddev;
static struct platform_device *keydev;

static const struct pci_device_id gpio_apu2_pci_tbl[] ={
	{PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, PCI_ANY_ID, PCI_ANY_ID},
	{ 0, } /* End of list */
};
MODULE_DEVICE_TABLE (pci, gpio_apu2_pci_tbl);

/* EGPIO89=GPIO32, AGPIO68=GPIO57, AGPIO69=GPIO58, AGPIO70=GPIO59 */
static u8 gpio_offset[APU_NUM_GPIO] = {89, 68, 69, 70};

static void __iomem *gpio_addr[APU_NUM_GPIO] = {NULL, NULL, NULL, NULL};

static int gpio_apu2_get_dir (struct gpio_chip *chip, unsigned offset)
{
	u32 val;

	val = ~ioread32 (gpio_addr[offset]);

	return (val >> GPIO_BIT_DIR) & 1;
}

static int gpio_apu2_dir_in (struct gpio_chip *gc, unsigned offset)
{
	u32 val;

	spin_lock_bh (&gpio_lock);

	val = ioread32 (gpio_addr[offset]);
	val &= ~BIT(GPIO_BIT_DIR);
	iowrite32 (val, gpio_addr[offset]);

	spin_unlock_bh (&gpio_lock);

	return 0;
}

static int gpio_apu2_dir_out (struct gpio_chip *chip, unsigned offset,
		int value)
{
	u32 val;

	spin_lock_bh (&gpio_lock);

	val = ioread32 (gpio_addr[offset]);
	val |= BIT(GPIO_BIT_DIR);
	iowrite32 (val, gpio_addr[offset]);

	spin_unlock_bh (&gpio_lock);

	return 0;
}

static int gpio_apu2_get_data (struct gpio_chip *chip, unsigned offset)
{
	u32 val;

	val = ioread32 (gpio_addr[offset]);

	return (val >> GPIO_BIT_READ) & 1;
}

static void gpio_apu2_set_data (struct gpio_chip *chip, unsigned offset, int value)
{
	u32 val;

	spin_lock_bh (&gpio_lock);

	val = ioread32 (gpio_addr[offset]);

	if (value)
		val |= BIT(GPIO_BIT_WRITE);
	else
		val &= ~BIT(GPIO_BIT_WRITE);

	iowrite32 (val, gpio_addr[offset]);

	spin_unlock_bh (&gpio_lock);
}

static struct gpio_chip gpio_apu2_chip = {
	.label = DEVNAME,
	.owner = THIS_MODULE,
	.base = -1,
	.ngpio = APU_NUM_GPIO,
	.get_direction = gpio_apu2_get_dir,
	.direction_input = gpio_apu2_dir_in,
	.direction_output = gpio_apu2_dir_out,
	.get = gpio_apu2_get_data,
	.set = gpio_apu2_set_data,
};

/*
 *
 */
static int gpio_apu2_probe (struct platform_device *dev)
{
	int ret = 0;
	int i;
	struct pci_dev *pci_dev = NULL;

	/* Match the PCI device */
	for_each_pci_dev (pci_dev) {
		if (pci_match_id (gpio_apu2_pci_tbl, pci_dev) != NULL) {
			gpio_apu2_pci = pci_dev;
			break;
		}
	}

	if (!gpio_apu2_pci)
		return -ENODEV;

	pr_info ("%s: PCI Revision ID: 0x%x\n", DEVNAME, gpio_apu2_pci->revision);

	/* Determine type of southbridge chipset */
	if (gpio_apu2_pci->revision < 0x40) {
		return -EACCES;
	}

	/* Request memory region for GPIO's */
	if (!devm_request_mem_region (&dev->dev, FCH_GPIO_BASE,
		FCH_GPIO_SIZE, DEVNAME)){
		pr_err ("%s: request GPIO mem region failed\n", DEVNAME);
		return -ENXIO;
	}

	/* Map IO's for GPIO's */
	for (i = 0; i < APU_NUM_GPIO; i++) {
		gpio_addr[i] = devm_ioremap (&dev->dev,
			FCH_GPIO_BASE + (gpio_offset[i] * sizeof (u32)), sizeof (u32));
		if (!gpio_addr[i]) {
			pr_err ("%s: map GPIO%d address failed\n", DEVNAME, gpio_offset[i]);
			return -ENXIO;
		}
	}

#if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
	gpio_apu2_chip.dev = &dev->dev;
#else
	gpio_apu2_chip.parent = &dev->dev;
#endif
	ret = gpiochip_add (&gpio_apu2_chip);
	if (ret) {
		pr_err ("%s: adding gpiochip failed\n", DEVNAME);
	}

	return ret;
}

static int gpio_apu2_remove (struct platform_device *dev)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
	int ret;
	ret = gpiochip_remove (&gpio_apu2_chip);
#else /* LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0) */
	gpiochip_remove (&gpio_apu2_chip);
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0) */
	return 0;
}

static struct platform_driver gpio_apu2_driver = {
	.probe = gpio_apu2_probe,
	.remove = gpio_apu2_remove,
	.driver = {
		.owner = THIS_MODULE,
		.name = DEVNAME
	}
};

static struct gpio_led apu2_leds_gpio[] = {
	{
		.name           = "apu2:green:power",
		.gpio           = 509,
		.active_low     = 1,
	},
	{
		.name           = "apu2:green:led2",
		.gpio           = 510,
		.active_low     = 1,
	},
	{
		.name           = "apu2:green:led3",
		.gpio           = 511,
		.active_low     = 1,
	},
};

static struct gpio_keys_button apu2_gpio_keys[] = {
	{
		.desc           = "Reset button",
		.type           = EV_KEY,
		.code           = KEY_RESTART,
		.debounce_interval = 60,
		.gpio           = 508,
		.active_low     = 1,
	},
};

static void register_gpio_keys_polled(int id, unsigned poll_interval,
				      unsigned nbuttons,
				      struct gpio_keys_button *buttons)
{
	struct gpio_keys_platform_data pdata = { };
	int err;

	keydev = platform_device_alloc("gpio-keys-polled", id);
	if (!keydev) {
		printk(KERN_ERR "Failed to allocate gpio-keys platform device\n");
		return;
	}

	pdata.poll_interval = poll_interval;
	pdata.nbuttons = nbuttons;
	pdata.buttons = buttons;

	err = platform_device_add_data(keydev, &pdata, sizeof(pdata));
	if (err) {
		dev_err(&keydev->dev, "failed to add platform data to key driver (%d)", err);
		goto err_put_pdev;
	}

	err = platform_device_add(keydev);
	if (err) {
		dev_err(&keydev->dev, "failed to register key platform device (%d)", err);
		goto err_put_pdev;
	}

	return;

err_put_pdev:
	platform_device_put(keydev);
	keydev = NULL;
}

static void register_leds_gpio(int id, unsigned num_leds, struct gpio_led *leds)
{
	struct gpio_led_platform_data pdata = { };
	int err;

	leddev = platform_device_alloc("leds-gpio", id);
	if (!leddev) {
		printk(KERN_ERR "Failed to allocate leds-gpio platform device\n");
		return;
	}

	pdata.num_leds = num_leds;
	pdata.leds = leds;

	err = platform_device_add_data(leddev, &pdata, sizeof(pdata));
	if (err) {
		dev_err(&leddev->dev, "failed to add platform data to key driver (%d)", err);
		goto err_put_pdev;
	}

	err = platform_device_add(leddev);
	if (err) {
		dev_err(&leddev->dev, "failed to register key platform device (%d)", err);
		goto err_put_pdev;
	}

	return;

err_put_pdev:
	platform_device_put(leddev);
	leddev = NULL;
}

static int __init gpio_apu2_init (void)
{
	int err;
	const char *board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);

	/* Match the device name/model */
	if (!board_name \
			|| !board_vendor \
			|| strcasecmp(board_vendor, "PC Engines") \
			|| (strcasecmp(board_name, "apu2") \
				&& strcasecmp(board_name, "apu3") \
				&& strcasecmp(board_name, "PC Engines apu2") \
				&& strcasecmp(board_name, "PC Engines apu3"))) {
		err = -ENODEV;
		goto exit;
	}

	pr_info ("%s: load APU2/LED GPIO driver module\n", DEVNAME);

	err = platform_driver_register (&gpio_apu2_driver);
	if (err)
		goto exit;

	gpio_apu2_platform_device = platform_device_register_simple (DEVNAME, -1, NULL, 0);
	if (IS_ERR(gpio_apu2_platform_device)) {
		err = PTR_ERR(gpio_apu2_platform_device);
		goto exit_driver;
	}

	pr_info ("%s: APU2 GPIO/LED driver module loaded\n", DEVNAME);

	register_leds_gpio(-1, ARRAY_SIZE(apu2_leds_gpio), apu2_leds_gpio);
	register_gpio_keys_polled(-1, 20, ARRAY_SIZE(apu2_gpio_keys), apu2_gpio_keys);
	return 0;

exit_driver:
	platform_driver_unregister (&gpio_apu2_driver);
exit:
	return err;
}

static void __exit gpio_apu2_exit (void)
{
	platform_device_unregister (gpio_apu2_platform_device);
	platform_device_unregister (leddev);
	platform_device_unregister (keydev);
	platform_driver_unregister (&gpio_apu2_driver);
	pr_info ("%s: APU2 GPIO/LED driver module unloaded\n", DEVNAME);
}

MODULE_AUTHOR ("Carsten Spiess <fli4l at carsten-spiess.de>");
MODULE_DESCRIPTION("GPIO driver for AMD FCH on PC-Engines APU-2");
MODULE_LICENSE("GPL");

module_init (gpio_apu2_init);
module_exit (gpio_apu2_exit);