diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/unittest.c | 465 |
1 files changed, 238 insertions, 227 deletions
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 96ae8a762a9e..1e5a2e4d893e 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -61,86 +61,6 @@ static struct unittest_results { #define EXPECT_END(level, fmt, ...) \ printk(level pr_fmt("EXPECT / : ") fmt, ##__VA_ARGS__) -struct unittest_gpio_dev { - struct gpio_chip chip; -}; - -static int unittest_gpio_chip_request_count; -static int unittest_gpio_probe_count; -static int unittest_gpio_probe_pass_count; - -static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) -{ - unittest_gpio_chip_request_count++; - - pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, - unittest_gpio_chip_request_count); - return 0; -} - -static int unittest_gpio_probe(struct platform_device *pdev) -{ - struct unittest_gpio_dev *devptr; - int ret; - - unittest_gpio_probe_count++; - - devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); - if (!devptr) - return -ENOMEM; - - platform_set_drvdata(pdev, devptr); - - devptr->chip.of_node = pdev->dev.of_node; - devptr->chip.label = "of-unittest-gpio"; - devptr->chip.base = -1; /* dynamic allocation */ - devptr->chip.ngpio = 5; - devptr->chip.request = unittest_gpio_chip_request; - - ret = gpiochip_add_data(&devptr->chip, NULL); - - unittest(!ret, - "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); - - if (!ret) - unittest_gpio_probe_pass_count++; - return ret; -} - -static int unittest_gpio_remove(struct platform_device *pdev) -{ - struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); - struct device *dev = &pdev->dev; - struct device_node *np = pdev->dev.of_node; - - dev_dbg(dev, "%s for node @%pOF\n", __func__, np); - - if (!gdev) - return -EINVAL; - - if (gdev->chip.base != -1) - gpiochip_remove(&gdev->chip); - - platform_set_drvdata(pdev, NULL); - kfree(pdev); - - return 0; -} - -static const struct of_device_id unittest_gpio_id[] = { - { .compatible = "unittest-gpio", }, - {} -}; - -static struct platform_driver unittest_gpio_driver = { - .probe = unittest_gpio_probe, - .remove = unittest_gpio_remove, - .driver = { - .name = "unittest-gpio", - .of_match_table = of_match_ptr(unittest_gpio_id), - }, -}; - static void __init of_unittest_find_node_by_name(void) { struct device_node *np; @@ -1588,6 +1508,244 @@ static int of_path_platform_device_exists(const char *path) return pdev != NULL; } +#ifdef CONFIG_OF_GPIO + +struct unittest_gpio_dev { + struct gpio_chip chip; +}; + +static int unittest_gpio_chip_request_count; +static int unittest_gpio_probe_count; +static int unittest_gpio_probe_pass_count; + +static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset) +{ + unittest_gpio_chip_request_count++; + + pr_debug("%s(): %s %d %d\n", __func__, chip->label, offset, + unittest_gpio_chip_request_count); + return 0; +} + +static int unittest_gpio_probe(struct platform_device *pdev) +{ + struct unittest_gpio_dev *devptr; + int ret; + + unittest_gpio_probe_count++; + + devptr = kzalloc(sizeof(*devptr), GFP_KERNEL); + if (!devptr) + return -ENOMEM; + + platform_set_drvdata(pdev, devptr); + + devptr->chip.of_node = pdev->dev.of_node; + devptr->chip.label = "of-unittest-gpio"; + devptr->chip.base = -1; /* dynamic allocation */ + devptr->chip.ngpio = 5; + devptr->chip.request = unittest_gpio_chip_request; + + ret = gpiochip_add_data(&devptr->chip, NULL); + + unittest(!ret, + "gpiochip_add_data() for node @%pOF failed, ret = %d\n", devptr->chip.of_node, ret); + + if (!ret) + unittest_gpio_probe_pass_count++; + return ret; +} + +static int unittest_gpio_remove(struct platform_device *pdev) +{ + struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + struct device_node *np = pdev->dev.of_node; + + dev_dbg(dev, "%s for node @%pOF\n", __func__, np); + + if (!gdev) + return -EINVAL; + + if (gdev->chip.base != -1) + gpiochip_remove(&gdev->chip); + + platform_set_drvdata(pdev, NULL); + kfree(pdev); + + return 0; +} + +static const struct of_device_id unittest_gpio_id[] = { + { .compatible = "unittest-gpio", }, + {} +}; + +static struct platform_driver unittest_gpio_driver = { + .probe = unittest_gpio_probe, + .remove = unittest_gpio_remove, + .driver = { + .name = "unittest-gpio", + .of_match_table = of_match_ptr(unittest_gpio_id), + }, +}; + +static void __init of_unittest_overlay_gpio(void) +{ + int chip_request_count; + int probe_pass_count; + int ret; + + /* + * tests: apply overlays before registering driver + * Similar to installing a driver as a module, the + * driver is registered after applying the overlays. + * + * - apply overlay_gpio_01 + * - apply overlay_gpio_02a + * - apply overlay_gpio_02b + * - register driver + * + * register driver will result in + * - probe and processing gpio hog for overlay_gpio_01 + * - probe for overlay_gpio_02a + * - processing gpio for overlay_gpio_02b + */ + + probe_pass_count = unittest_gpio_probe_pass_count; + chip_request_count = unittest_gpio_chip_request_count; + + /* + * overlay_gpio_01 contains gpio node and child gpio hog node + * overlay_gpio_02a contains gpio node + * overlay_gpio_02b contains child gpio hog node + */ + + unittest(overlay_data_apply("overlay_gpio_01", NULL), + "Adding overlay 'overlay_gpio_01' failed\n"); + + unittest(overlay_data_apply("overlay_gpio_02a", NULL), + "Adding overlay 'overlay_gpio_02a' failed\n"); + + unittest(overlay_data_apply("overlay_gpio_02b", NULL), + "Adding overlay 'overlay_gpio_02b' failed\n"); + + /* + * messages are the result of the probes, after the + * driver is registered + */ + + EXPECT_BEGIN(KERN_INFO, + "GPIO line <<int>> (line-B-input) hogged as input\n"); + + EXPECT_BEGIN(KERN_INFO, + "GPIO line <<int>> (line-A-input) hogged as input\n"); + + ret = platform_driver_register(&unittest_gpio_driver); + if (unittest(ret == 0, "could not register unittest gpio driver\n")) + return; + + EXPECT_END(KERN_INFO, + "GPIO line <<int>> (line-A-input) hogged as input\n"); + EXPECT_END(KERN_INFO, + "GPIO line <<int>> (line-B-input) hogged as input\n"); + + unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, + "unittest_gpio_probe() failed or not called\n"); + + unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, + "unittest_gpio_chip_request() called %d times (expected 1 time)\n", + unittest_gpio_chip_request_count - chip_request_count); + + /* + * tests: apply overlays after registering driver + * + * Similar to a driver built-in to the kernel, the + * driver is registered before applying the overlays. + * + * overlay_gpio_03 contains gpio node and child gpio hog node + * + * - apply overlay_gpio_03 + * + * apply overlay will result in + * - probe and processing gpio hog. + */ + + probe_pass_count = unittest_gpio_probe_pass_count; + chip_request_count = unittest_gpio_chip_request_count; + + EXPECT_BEGIN(KERN_INFO, + "GPIO line <<int>> (line-D-input) hogged as input\n"); + + /* overlay_gpio_03 contains gpio node and child gpio hog node */ + + unittest(overlay_data_apply("overlay_gpio_03", NULL), + "Adding overlay 'overlay_gpio_03' failed\n"); + + EXPECT_END(KERN_INFO, + "GPIO line <<int>> (line-D-input) hogged as input\n"); + + unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, + "unittest_gpio_probe() failed or not called\n"); + + unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, + "unittest_gpio_chip_request() called %d times (expected 1 time)\n", + unittest_gpio_chip_request_count - chip_request_count); + + /* + * overlay_gpio_04a contains gpio node + * + * - apply overlay_gpio_04a + * + * apply the overlay will result in + * - probe for overlay_gpio_04a + */ + + probe_pass_count = unittest_gpio_probe_pass_count; + chip_request_count = unittest_gpio_chip_request_count; + + /* overlay_gpio_04a contains gpio node */ + + unittest(overlay_data_apply("overlay_gpio_04a", NULL), + "Adding overlay 'overlay_gpio_04a' failed\n"); + + unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, + "unittest_gpio_probe() failed or not called\n"); + + /* + * overlay_gpio_04b contains child gpio hog node + * + * - apply overlay_gpio_04b + * + * apply the overlay will result in + * - processing gpio for overlay_gpio_04b + */ + + EXPECT_BEGIN(KERN_INFO, + "GPIO line <<int>> (line-C-input) hogged as input\n"); + + /* overlay_gpio_04b contains child gpio hog node */ + + unittest(overlay_data_apply("overlay_gpio_04b", NULL), + "Adding overlay 'overlay_gpio_04b' failed\n"); + + EXPECT_END(KERN_INFO, + "GPIO line <<int>> (line-C-input) hogged as input\n"); + + unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, + "unittest_gpio_chip_request() called %d times (expected 1 time)\n", + unittest_gpio_chip_request_count - chip_request_count); +} + +#else + +static void __init of_unittest_overlay_gpio(void) +{ + /* skip tests */ +} + +#endif + #if IS_BUILTIN(CONFIG_I2C) /* get the i2c client device instantiated at the path */ @@ -2517,153 +2675,6 @@ static inline void of_unittest_overlay_i2c_15(void) { } #endif -static void __init of_unittest_overlay_gpio(void) -{ - int chip_request_count; - int probe_pass_count; - int ret; - - /* - * tests: apply overlays before registering driver - * Similar to installing a driver as a module, the - * driver is registered after applying the overlays. - * - * - apply overlay_gpio_01 - * - apply overlay_gpio_02a - * - apply overlay_gpio_02b - * - register driver - * - * register driver will result in - * - probe and processing gpio hog for overlay_gpio_01 - * - probe for overlay_gpio_02a - * - processing gpio for overlay_gpio_02b - */ - - probe_pass_count = unittest_gpio_probe_pass_count; - chip_request_count = unittest_gpio_chip_request_count; - - /* - * overlay_gpio_01 contains gpio node and child gpio hog node - * overlay_gpio_02a contains gpio node - * overlay_gpio_02b contains child gpio hog node - */ - - unittest(overlay_data_apply("overlay_gpio_01", NULL), - "Adding overlay 'overlay_gpio_01' failed\n"); - - unittest(overlay_data_apply("overlay_gpio_02a", NULL), - "Adding overlay 'overlay_gpio_02a' failed\n"); - - unittest(overlay_data_apply("overlay_gpio_02b", NULL), - "Adding overlay 'overlay_gpio_02b' failed\n"); - - /* - * messages are the result of the probes, after the - * driver is registered - */ - - EXPECT_BEGIN(KERN_INFO, - "GPIO line <<int>> (line-B-input) hogged as input\n"); - - EXPECT_BEGIN(KERN_INFO, - "GPIO line <<int>> (line-A-input) hogged as input\n"); - - ret = platform_driver_register(&unittest_gpio_driver); - if (unittest(ret == 0, "could not register unittest gpio driver\n")) - return; - - EXPECT_END(KERN_INFO, - "GPIO line <<int>> (line-A-input) hogged as input\n"); - EXPECT_END(KERN_INFO, - "GPIO line <<int>> (line-B-input) hogged as input\n"); - - unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count, - "unittest_gpio_probe() failed or not called\n"); - - unittest(chip_request_count + 2 == unittest_gpio_chip_request_count, - "unittest_gpio_chip_request() called %d times (expected 1 time)\n", - unittest_gpio_chip_request_count - chip_request_count); - - /* - * tests: apply overlays after registering driver - * - * Similar to a driver built-in to the kernel, the - * driver is registered before applying the overlays. - * - * overlay_gpio_03 contains gpio node and child gpio hog node - * - * - apply overlay_gpio_03 - * - * apply overlay will result in - * - probe and processing gpio hog. - */ - - probe_pass_count = unittest_gpio_probe_pass_count; - chip_request_count = unittest_gpio_chip_request_count; - - EXPECT_BEGIN(KERN_INFO, - "GPIO line <<int>> (line-D-input) hogged as input\n"); - - /* overlay_gpio_03 contains gpio node and child gpio hog node */ - - unittest(overlay_data_apply("overlay_gpio_03", NULL), - "Adding overlay 'overlay_gpio_03' failed\n"); - - EXPECT_END(KERN_INFO, - "GPIO line <<int>> (line-D-input) hogged as input\n"); - - unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, - "unittest_gpio_probe() failed or not called\n"); - - unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, - "unittest_gpio_chip_request() called %d times (expected 1 time)\n", - unittest_gpio_chip_request_count - chip_request_count); - - /* - * overlay_gpio_04a contains gpio node - * - * - apply overlay_gpio_04a - * - * apply the overlay will result in - * - probe for overlay_gpio_04a - */ - - probe_pass_count = unittest_gpio_probe_pass_count; - chip_request_count = unittest_gpio_chip_request_count; - - /* overlay_gpio_04a contains gpio node */ - - unittest(overlay_data_apply("overlay_gpio_04a", NULL), - "Adding overlay 'overlay_gpio_04a' failed\n"); - - unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count, - "unittest_gpio_probe() failed or not called\n"); - - /* - * overlay_gpio_04b contains child gpio hog node - * - * - apply overlay_gpio_04b - * - * apply the overlay will result in - * - processing gpio for overlay_gpio_04b - */ - - EXPECT_BEGIN(KERN_INFO, - "GPIO line <<int>> (line-C-input) hogged as input\n"); - - /* overlay_gpio_04b contains child gpio hog node */ - - unittest(overlay_data_apply("overlay_gpio_04b", NULL), - "Adding overlay 'overlay_gpio_04b' failed\n"); - - EXPECT_END(KERN_INFO, - "GPIO line <<int>> (line-C-input) hogged as input\n"); - - unittest(chip_request_count + 1 == unittest_gpio_chip_request_count, - "unittest_gpio_chip_request() called %d times (expected 1 time)\n", - unittest_gpio_chip_request_count - chip_request_count); -} - static void __init of_unittest_overlay(void) { struct device_node *bus_np = NULL; |