1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2015 Google, Inc 4 */ 5 6 #include <common.h> 7 #include <dm.h> 8 #include <mapmem.h> 9 #include <regmap.h> 10 #include <syscon.h> 11 #include <asm/test.h> 12 #include <dm/test.h> 13 #include <test/ut.h> 14 15 /* Base test of register maps */ 16 static int dm_test_regmap_base(struct unit_test_state *uts) 17 { 18 struct udevice *dev; 19 struct regmap *map; 20 ofnode node; 21 int i; 22 23 ut_assertok(uclass_get_device(UCLASS_SYSCON, 0, &dev)); 24 map = syscon_get_regmap(dev); 25 ut_assertok_ptr(map); 26 ut_asserteq(1, map->range_count); 27 ut_asserteq(0x10, map->ranges[0].start); 28 ut_asserteq(4, map->ranges[0].size); 29 ut_asserteq(0x10, map_to_sysmem(regmap_get_range(map, 0))); 30 31 ut_assertok(uclass_get_device(UCLASS_SYSCON, 1, &dev)); 32 map = syscon_get_regmap(dev); 33 ut_assertok_ptr(map); 34 ut_asserteq(4, map->range_count); 35 ut_asserteq(0x20, map->ranges[0].start); 36 for (i = 0; i < 4; i++) { 37 const unsigned long addr = 0x20 + 8 * i; 38 39 ut_asserteq(addr, map->ranges[i].start); 40 ut_asserteq(5 + i, map->ranges[i].size); 41 ut_asserteq(addr, map_to_sysmem(regmap_get_range(map, i))); 42 } 43 44 /* Check that we can't pretend a different device is a syscon */ 45 ut_assertok(uclass_get_device(UCLASS_I2C, 0, &dev)); 46 map = syscon_get_regmap(dev); 47 ut_asserteq_ptr(ERR_PTR(-ENOEXEC), map); 48 49 /* A different device can be a syscon by using Linux-compat API */ 50 node = ofnode_path("/syscon@2"); 51 ut_assert(ofnode_valid(node)); 52 53 map = syscon_node_to_regmap(node); 54 ut_assertok_ptr(map); 55 ut_asserteq(4, map->range_count); 56 ut_asserteq(0x40, map->ranges[0].start); 57 for (i = 0; i < 4; i++) { 58 const unsigned long addr = 0x40 + 8 * i; 59 60 ut_asserteq(addr, map->ranges[i].start); 61 ut_asserteq(5 + i, map->ranges[i].size); 62 ut_asserteq(addr, map_to_sysmem(regmap_get_range(map, i))); 63 } 64 65 return 0; 66 } 67 DM_TEST(dm_test_regmap_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 68 69 /* Test we can access a regmap through syscon */ 70 static int dm_test_regmap_syscon(struct unit_test_state *uts) 71 { 72 struct regmap *map; 73 74 map = syscon_get_regmap_by_driver_data(SYSCON0); 75 ut_assertok_ptr(map); 76 ut_asserteq(1, map->range_count); 77 78 map = syscon_get_regmap_by_driver_data(SYSCON1); 79 ut_assertok_ptr(map); 80 ut_asserteq(4, map->range_count); 81 82 map = syscon_get_regmap_by_driver_data(SYSCON_COUNT); 83 ut_asserteq_ptr(ERR_PTR(-ENODEV), map); 84 85 ut_asserteq(0x10, map_to_sysmem(syscon_get_first_range(SYSCON0))); 86 ut_asserteq(0x20, map_to_sysmem(syscon_get_first_range(SYSCON1))); 87 ut_asserteq_ptr(ERR_PTR(-ENODEV), 88 syscon_get_first_range(SYSCON_COUNT)); 89 90 return 0; 91 } 92 93 DM_TEST(dm_test_regmap_syscon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 94 95 /* Read/Write/Modify test */ 96 static int dm_test_regmap_rw(struct unit_test_state *uts) 97 { 98 struct udevice *dev; 99 struct regmap *map; 100 uint reg; 101 102 ut_assertok(uclass_get_device(UCLASS_SYSCON, 0, &dev)); 103 map = syscon_get_regmap(dev); 104 ut_assertok_ptr(map); 105 106 ut_assertok(regmap_write(map, 0, 0xcacafafa)); 107 ut_assertok(regmap_write(map, 3, 0x55aa2211)); 108 109 ut_assertok(regmap_read(map, 0, ®)); 110 ut_assertok(regmap_read(map, 3, ®)); 111 112 ut_assertok(regmap_update_bits(map, 0, 0xff00ff00, 0x55aa2211)); 113 ut_assertok(regmap_update_bits(map, 3, 0x00ff00ff, 0xcacafada)); 114 115 return 0; 116 } 117 118 DM_TEST(dm_test_regmap_rw, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 119