1 #!/usr/bin/env perl 1 #!/usr/bin/env perl
2 # SPDX-License-Identifier: GPL-2.0-only <<
3 2
4 # Copyright 2016 by Frank Rowand 3 # Copyright 2016 by Frank Rowand
5 # Copyright 2016 by Gaurav Minocha 4 # Copyright 2016 by Gaurav Minocha
6 # 5 #
>> 6 # This file is subject to the terms and conditions of the GNU General Public
>> 7 # License v2.
7 8
8 use strict 'refs'; 9 use strict 'refs';
9 use strict subs; 10 use strict subs;
10 11
11 use Getopt::Long; 12 use Getopt::Long;
12 13
13 $VUFX = "160610a"; 14 $VUFX = "160610a";
14 15
15 $script_name = $0; 16 $script_name = $0;
16 $script_name =~ s|^.*/||; 17 $script_name =~ s|^.*/||;
17 18
18 19
19 # ----- constants for print_flags() 20 # ----- constants for print_flags()
20 21
21 # Position in string $pr_flags. Range of 0..( 22 # Position in string $pr_flags. Range of 0..($num_pr_flags - 1).
22 $pr_flag_pos_mcompatible = 0; 23 $pr_flag_pos_mcompatible = 0;
23 $pr_flag_pos_driver = 1; 24 $pr_flag_pos_driver = 1;
24 $pr_flag_pos_mdriver = 2; 25 $pr_flag_pos_mdriver = 2;
25 $pr_flag_pos_config = 3; 26 $pr_flag_pos_config = 3;
26 $pr_flag_pos_mconfig = 4; 27 $pr_flag_pos_mconfig = 4;
27 $pr_flag_pos_node_not_enabled = 5; 28 $pr_flag_pos_node_not_enabled = 5;
28 $pr_flag_pos_white_list = 6; 29 $pr_flag_pos_white_list = 6;
29 $pr_flag_pos_hard_coded = 7; 30 $pr_flag_pos_hard_coded = 7;
30 $pr_flag_pos_config_hard_coded = 8; 31 $pr_flag_pos_config_hard_coded = 8;
31 $pr_flag_pos_config_none = 9; 32 $pr_flag_pos_config_none = 9;
32 $pr_flag_pos_config_m = 10; 33 $pr_flag_pos_config_m = 10;
33 $pr_flag_pos_config_y = 11; 34 $pr_flag_pos_config_y = 11;
34 $pr_flag_pos_config_test_fail = 12; 35 $pr_flag_pos_config_test_fail = 12;
35 36
36 $num_pr_flags = $pr_flag_pos_config_test_fail 37 $num_pr_flags = $pr_flag_pos_config_test_fail + 1;
37 38
38 # flags in @pr_flag_value must be unique value 39 # flags in @pr_flag_value must be unique values to allow simple regular
39 # expessions to work for --include_flags and - 40 # expessions to work for --include_flags and --exclude_flags.
40 # Convention: use upper case letters for poten 41 # Convention: use upper case letters for potential issues or problems.
41 42
42 @pr_flag_value = ('M', 'd', 'D', 'c', 'C', 'E' 43 @pr_flag_value = ('M', 'd', 'D', 'c', 'C', 'E', 'W', 'H', 'x', 'n', 'm', 'y', 'F');
43 44
44 @pr_flag_help = ( 45 @pr_flag_help = (
45 "multiple compatibles found for this node" 46 "multiple compatibles found for this node",
46 "driver found for this compatible", 47 "driver found for this compatible",
47 "multiple drivers found for this compatibl 48 "multiple drivers found for this compatible",
48 "kernel config found for this driver", 49 "kernel config found for this driver",
49 "multiple config options found for this dr 50 "multiple config options found for this driver",
50 "node is not enabled", 51 "node is not enabled",
51 "compatible is white listed", 52 "compatible is white listed",
52 "matching driver and/or kernel config is h 53 "matching driver and/or kernel config is hard coded",
53 "kernel config hard coded in Makefile", 54 "kernel config hard coded in Makefile",
54 "one or more kernel config file options is 55 "one or more kernel config file options is not set",
55 "one or more kernel config file options is 56 "one or more kernel config file options is set to 'm'",
56 "one or more kernel config file options is 57 "one or more kernel config file options is set to 'y'",
57 "one of more kernel config file options fa 58 "one of more kernel config file options fails to have correct value"
58 ); 59 );
59 60
60 61
61 # ----- 62 # -----
62 63
63 %driver_config = (); # driver config array, 64 %driver_config = (); # driver config array, indexed by driver source file
64 %driver_count = (); # driver_cnt, indexed b 65 %driver_count = (); # driver_cnt, indexed by compatible
65 %compat_driver = (); # compatible driver arr 66 %compat_driver = (); # compatible driver array, indexed by compatible
66 %existing_config = (); # existing config symbo 67 %existing_config = (); # existing config symbols present in given config file
67 # expected values are: 68 # expected values are: "y", "m", a decimal number, a
68 # hex number, or a stri 69 # hex number, or a string
69 70
70 # ----- magic compatibles, do not have a drive 71 # ----- magic compatibles, do not have a driver
71 # 72 #
72 # Will not search for drivers for these compat 73 # Will not search for drivers for these compatibles.
73 74
74 %compat_white_list = ( 75 %compat_white_list = (
75 'none' => '1', 76 'none' => '1',
76 'pci' => '1', 77 'pci' => '1',
77 'simple-bus' => '1', 78 'simple-bus' => '1',
78 ); 79 );
79 80
80 # Will not search for drivers for these compat 81 # Will not search for drivers for these compatibles.
81 # 82 #
82 # These compatibles have a very large number o 83 # These compatibles have a very large number of false positives.
83 # 84 #
84 # 'hardcoded_no_driver' is a magic value. Oth 85 # 'hardcoded_no_driver' is a magic value. Other code knows this
85 # magic value. Do not use 'no_driver' here! 86 # magic value. Do not use 'no_driver' here!
86 # 87 #
87 # Revisit each 'hardcoded_no_driver' to see ho 88 # Revisit each 'hardcoded_no_driver' to see how the compatible
88 # is used. Are there drivers that can be prov 89 # is used. Are there drivers that can be provided?
89 90
90 %driver_hard_code_list = ( 91 %driver_hard_code_list = (
91 'cache' => ['hardcoded_ 92 'cache' => ['hardcoded_no_driver'],
92 'eeprom' => ['hardcoded_ 93 'eeprom' => ['hardcoded_no_driver'],
93 'gpio' => ['hardcoded_ 94 'gpio' => ['hardcoded_no_driver'],
94 'gpio-keys' => ['drivers/in 95 'gpio-keys' => ['drivers/input/keyboard/gpio_keys.c'],
95 'i2c-gpio' => ['drivers/i2 96 'i2c-gpio' => ['drivers/i2c/busses/i2c-gpio.c'],
96 'isa' => ['arch/mips/ 97 'isa' => ['arch/mips/mti-malta/malta-dt.c',
97 'arch/x86/ 98 'arch/x86/kernel/devicetree.c'],
98 'led' => ['hardcoded_ 99 'led' => ['hardcoded_no_driver'],
99 'm25p32' => ['hardcoded_ 100 'm25p32' => ['hardcoded_no_driver'],
100 'm25p64' => ['hardcoded_ 101 'm25p64' => ['hardcoded_no_driver'],
101 'm25p80' => ['hardcoded_ 102 'm25p80' => ['hardcoded_no_driver'],
102 'mtd-ram' => ['drivers/mt 103 'mtd-ram' => ['drivers/mtd/maps/physmap_of.c'],
103 'pwm-backlight' => ['drivers/vi 104 'pwm-backlight' => ['drivers/video/backlight/pwm_bl.c'],
104 'spidev' => ['hardcoded_ 105 'spidev' => ['hardcoded_no_driver'],
105 'syscon' => ['drivers/mf 106 'syscon' => ['drivers/mfd/syscon.c'],
106 'tlv320aic23' => ['hardcoded_ 107 'tlv320aic23' => ['hardcoded_no_driver'],
107 'wm8731' => ['hardcoded_ 108 'wm8731' => ['hardcoded_no_driver'],
108 ); 109 );
109 110
110 # Use these config options instead of searchin 111 # Use these config options instead of searching makefiles
111 112
112 %driver_config_hard_code_list = ( 113 %driver_config_hard_code_list = (
113 114
114 # this one needed even if %driver_hard_ 115 # this one needed even if %driver_hard_code_list is empty
115 'no_driver' 116 'no_driver' => ['no_config'],
116 'hardcoded_no_driver' 117 'hardcoded_no_driver' => ['no_config'],
117 118
118 # drivers/usb/host/ehci-ppc-of.c 119 # drivers/usb/host/ehci-ppc-of.c
119 # drivers/usb/host/ehci-xilinx-of.c 120 # drivers/usb/host/ehci-xilinx-of.c
120 # are included from: 121 # are included from:
121 # drivers/usb/host/ehci-hcd.c 122 # drivers/usb/host/ehci-hcd.c
122 # thus the search of Makefile for the 123 # thus the search of Makefile for the included .c files is incorrect
123 # ehci-hcd.c wraps the includes with if 124 # ehci-hcd.c wraps the includes with ifdef CONFIG_USB_EHCI_HCD_..._OF
124 # 125 #
125 # similar model for ohci-hcd.c (but no 126 # similar model for ohci-hcd.c (but no ohci-xilinx-of.c)
126 # 127 #
127 # similarly, uhci-hcd.c includes uhci-p 128 # similarly, uhci-hcd.c includes uhci-platform.c
128 129
129 'drivers/usb/host/ehci-ppc-of.c' 130 'drivers/usb/host/ehci-ppc-of.c' => ['CONFIG_USB_EHCI_HCD',
130 131 'CONFIG_USB_EHCI_HCD_PPC_OF'],
131 'drivers/usb/host/ohci-ppc-of.c' 132 'drivers/usb/host/ohci-ppc-of.c' => ['CONFIG_USB_OHCI_HCD',
132 133 'CONFIG_USB_OHCI_HCD_PPC_OF'],
133 134
134 'drivers/usb/host/ehci-xilinx-of.c' 135 'drivers/usb/host/ehci-xilinx-of.c' => ['CONFIG_USB_EHCI_HCD',
135 136 'CONFIG_USB_EHCI_HCD_XILINX'],
136 137
137 'drivers/usb/host/uhci-platform.c' 138 'drivers/usb/host/uhci-platform.c' => ['CONFIG_USB_UHCI_HCD',
138 139 'CONFIG_USB_UHCI_PLATFORM'],
139 140
140 # scan_makefile will find only one of t 141 # scan_makefile will find only one of these config options:
141 # ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_ 142 # ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),)
142 'arch/arm/mach-imx/platsmp.c' 143 'arch/arm/mach-imx/platsmp.c' => ['CONFIG_SOC_IMX6 && CONFIG_SMP',
143 144 'CONFIG_SOC_LS1021A && CONFIG_SMP'],
144 ); 145 );
145 146
146 147
147 # 'virt/kvm/arm/.*' are controlled by makefile 148 # 'virt/kvm/arm/.*' are controlled by makefiles in other directories,
148 # using relative paths, such as 'KVM := ../../ 149 # using relative paths, such as 'KVM := ../../../virt/kvm'. Do not
149 # add complexity to find_kconfig() to deal wit 150 # add complexity to find_kconfig() to deal with this. There is a long
150 # term intent to change the kvm related makefi 151 # term intent to change the kvm related makefiles to the normal kernel
151 # style. After that is done, this entry can b 152 # style. After that is done, this entry can be removed from the
152 # black_list_driver. 153 # black_list_driver.
153 154
154 @black_list_driver = ( 155 @black_list_driver = (
155 # kvm no longer a problem after commit 156 # kvm no longer a problem after commit 503a62862e8f in 4.7-rc1
156 # 'virt/kvm/arm/.*', 157 # 'virt/kvm/arm/.*',
157 ); 158 );
158 159
159 160
160 sub usage() 161 sub usage()
161 { 162 {
162 print 163 print
163 " 164 "
164 Usage: $script_name [options] device-tree... 165 Usage: $script_name [options] device-tree...
165 166
166 device_tree is: dts_file | dtb_file | proc 167 device_tree is: dts_file | dtb_file | proc_device-tree
167 168
168 169
169 Valid options: 170 Valid options:
170 -c FILE Read kernel config op 171 -c FILE Read kernel config options from FILE
171 --config FILE synonym for 'c' 172 --config FILE synonym for 'c'
172 --config-format config file friendly 173 --config-format config file friendly output format
173 --exclude-flag FLAG exclude entries with 174 --exclude-flag FLAG exclude entries with a matching flag
174 -h Display this message 175 -h Display this message and exit
175 --help synonym for 'h' 176 --help synonym for 'h'
176 --black-list-driver use driver black list 177 --black-list-driver use driver black list
177 --white-list-config use config white list 178 --white-list-config use config white list
178 --white-list-driver use driver white list 179 --white-list-driver use driver white list
179 --include-flag FLAG include only entries 180 --include-flag FLAG include only entries with a matching flag
180 --include-suspect include only entries 181 --include-suspect include only entries with an uppercase flag
181 --short-name do not show the path 182 --short-name do not show the path portion of the node name
182 --show-lists report of white and b 183 --show-lists report of white and black lists
183 --version Display program versi 184 --version Display program version and exit
184 185
185 186
186 Report driver source files that match the co 187 Report driver source files that match the compatibles in the device
187 tree file and the kernel config options that 188 tree file and the kernel config options that enable the driver source
188 files. 189 files.
189 190
190 This program must be run in the root directo 191 This program must be run in the root directory of a Linux kernel
191 source tree. 192 source tree.
192 193
193 The default format is a report that is inten 194 The default format is a report that is intended to be easily human
194 scannable. 195 scannable.
195 196
196 An alternate format can be selected by --con 197 An alternate format can be selected by --config-format. This will
197 create output that can easily be edited to c 198 create output that can easily be edited to create a fragment that can
198 be appended to the existing kernel config fi 199 be appended to the existing kernel config file. Each entry consists of
199 multiple lines. The first line reports flag 200 multiple lines. The first line reports flags, the node path, compatible
200 value, driver file matching the compatible, 201 value, driver file matching the compatible, configuration options, and
201 current values of the configuration options. 202 current values of the configuration options. For each configuration
202 option, the following lines report the curre 203 option, the following lines report the current value and the value that
203 is required for the driver file to be includ 204 is required for the driver file to be included in the kernel.
204 205
205 If a large number of drivers or config optio 206 If a large number of drivers or config options is listed for a node,
206 and the '$pr_flag_value[$pr_flag_pos_hard_co 207 and the '$pr_flag_value[$pr_flag_pos_hard_coded]' flag is set consider using --white-list-config and/or
207 --white-list-driver. If the white list opti 208 --white-list-driver. If the white list option suppresses the correct
208 entry please report that as a bug. 209 entry please report that as a bug.
209 210
210 CAUTION: 211 CAUTION:
211 This program uses heuristics to guess whi 212 This program uses heuristics to guess which driver(s) support each
212 compatible string and which config option 213 compatible string and which config option(s) enables the driver(s).
213 Do not believe that the reported informat 214 Do not believe that the reported information is fully correct.
214 This program is intended to aid the proce 215 This program is intended to aid the process of determining the
215 proper kernel configuration for a device 216 proper kernel configuration for a device tree, but this is not
216 a fully automated process -- human involv 217 a fully automated process -- human involvement may still be
217 required! 218 required!
218 219
219 The driver match heuristic used is to sea 220 The driver match heuristic used is to search for source files
220 containing the compatible string enclosed 221 containing the compatible string enclosed in quotes.
221 222
222 This program might not be able to find al 223 This program might not be able to find all drivers matching a
223 compatible string. 224 compatible string.
224 225
225 Some makefiles are overly clever. This p 226 Some makefiles are overly clever. This program was not made
226 complex enough to handle them. If no con 227 complex enough to handle them. If no config option is listed
227 for a driver, look at the makefile for th 228 for a driver, look at the makefile for the driver source file.
228 Even if a config option is listed for a d 229 Even if a config option is listed for a driver, some other
229 available config options may not be liste 230 available config options may not be listed.
230 231
231 FLAG values: 232 FLAG values:
232 "; 233 ";
233 234
234 for ($k = 0; $k < $num_pr_flags; $k++) 235 for ($k = 0; $k < $num_pr_flags; $k++) {
235 printf " %s %s\n", $pr_fl 236 printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k];
236 } 237 }
237 238
238 print 239 print
239 " 240 "
240 Upper case letters indicate potential iss 241 Upper case letters indicate potential issues or problems.
241 242
242 The flag: 243 The flag:
243 244
244 "; 245 ";
245 246
246 $k = $pr_flag_pos_hard_coded; 247 $k = $pr_flag_pos_hard_coded;
247 printf " %s %s\n", $pr_flag_value 248 printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k];
248 249
249 print 250 print
250 " 251 "
251 will be set if the config or driver is in th 252 will be set if the config or driver is in the white lists, even if
252 --white-list-config and --white-list-driver 253 --white-list-config and --white-list-driver are not specified.
253 This is a hint that 1) many of these reporte 254 This is a hint that 1) many of these reported lines are likely to
254 be incorrect, and 2) using those options wil 255 be incorrect, and 2) using those options will reduce the number of
255 drivers and/or config options reported. 256 drivers and/or config options reported.
256 257
257 --white-list-config and --white-list-driver 258 --white-list-config and --white-list-driver may not be accurate if this
258 program is not well maintained. Use them wi 259 program is not well maintained. Use them with appropriate skepticism.
259 Use the --show-lists option to report the va 260 Use the --show-lists option to report the values in the list.
260 261
261 Return value: 262 Return value:
262 0 if no error 263 0 if no error
263 1 error processing command line 264 1 error processing command line
264 2 unable to open or read kernel config f 265 2 unable to open or read kernel config file
265 3 unable to open or process input device 266 3 unable to open or process input device tree file(s)
266 267
267 EXAMPLES: 268 EXAMPLES:
268 269
269 dt_to_config arch/arm/boot/dts/my_dts_fil 270 dt_to_config arch/arm/boot/dts/my_dts_file.dts
270 271
271 Basic report. 272 Basic report.
272 273
273 dt_to_config \\ 274 dt_to_config \\
274 --config \${KBUILD_OUTPUT}/.config \\ 275 --config \${KBUILD_OUTPUT}/.config \\
275 arch/\${ARCH}/boot/dts/my_dts_file.dts 276 arch/\${ARCH}/boot/dts/my_dts_file.dts
276 277
277 Full report, with config file issues no 278 Full report, with config file issues noted.
278 279
279 dt_to_config --include-suspect \\ 280 dt_to_config --include-suspect \\
280 --config \${KBUILD_OUTPUT}/.config \\ 281 --config \${KBUILD_OUTPUT}/.config \\
281 arch/\${ARCH}/boot/dts/my_dts_file.dts 282 arch/\${ARCH}/boot/dts/my_dts_file.dts
282 283
283 Report of node / compatible string / dr 284 Report of node / compatible string / driver tuples that should
284 be further investigated. A node may ha 285 be further investigated. A node may have multiple compatible
285 strings. A compatible string may be ma 286 strings. A compatible string may be matched by multiple drivers.
286 A driver may have config file issues no 287 A driver may have config file issues noted. The compatible string
287 and/or driver may be in the white lists 288 and/or driver may be in the white lists.
288 289
289 dt_to_config --include-suspect --config-f 290 dt_to_config --include-suspect --config-format \\
290 --config ${KBUILD_OUTPUT}/.config \\ 291 --config ${KBUILD_OUTPUT}/.config \\
291 arch/\${ARCH}/boot/dts/my_dts_file.dts 292 arch/\${ARCH}/boot/dts/my_dts_file.dts
292 293
293 Report of node / compatible string / dr 294 Report of node / compatible string / driver tuples that should
294 be further investigated. The report ca 295 be further investigated. The report can be edited to uncomment
295 the config options to select the desire 296 the config options to select the desired tuple for a given node.
296 A node may have multiple compatible str 297 A node may have multiple compatible strings. A compatible string
297 may be matched by multiple drivers. A 298 may be matched by multiple drivers. A driver may have config file
298 issues noted. The compatible string an 299 issues noted. The compatible string and/or driver may be in the
299 white lists. 300 white lists.
300 301
301 "; 302 ";
302 } 303 }
303 304
304 sub set_flag() 305 sub set_flag()
305 { 306 {
306 # pr_flags_ref is a reference to $pr_fl 307 # pr_flags_ref is a reference to $pr_flags
307 308
308 my $pr_flags_ref = shift; 309 my $pr_flags_ref = shift;
309 my $pos = shift; 310 my $pos = shift;
310 311
311 substr $$pr_flags_ref, $pos, 1, $pr_fla 312 substr $$pr_flags_ref, $pos, 1, $pr_flag_value[$pos];
312 313
313 return $pr_flags; 314 return $pr_flags;
314 } 315 }
315 316
316 sub print_flags() 317 sub print_flags()
317 { 318 {
318 # return 1 if anything printed, else 0 319 # return 1 if anything printed, else 0
319 320
320 # some fields of pn_arg_ref might not b 321 # some fields of pn_arg_ref might not be used in this function, but
321 # extract all of them anyway. 322 # extract all of them anyway.
322 my $pn_arg_ref = shift; 323 my $pn_arg_ref = shift;
323 324
324 my $compat = $pn_arg_ref->{comp 325 my $compat = $pn_arg_ref->{compat};
325 my $compatible_cnt = $pn_arg_ref->{comp 326 my $compatible_cnt = $pn_arg_ref->{compatible_cnt};
326 my $config = $pn_arg_ref->{conf 327 my $config = $pn_arg_ref->{config};
327 my $config_cnt = $pn_arg_ref->{conf 328 my $config_cnt = $pn_arg_ref->{config_cnt};
328 my $driver = $pn_arg_ref->{driv 329 my $driver = $pn_arg_ref->{driver};
329 my $driver_cnt = $pn_arg_ref->{driv 330 my $driver_cnt = $pn_arg_ref->{driver_cnt};
330 my $full_node = $pn_arg_ref->{full 331 my $full_node = $pn_arg_ref->{full_node};
331 my $node = $pn_arg_ref->{node 332 my $node = $pn_arg_ref->{node};
332 my $node_enabled = $pn_arg_ref->{node 333 my $node_enabled = $pn_arg_ref->{node_enabled};
333 my $white_list = $pn_arg_ref->{whit 334 my $white_list = $pn_arg_ref->{white_list};
334 335
335 my $pr_flags = '-' x $num_pr_flag 336 my $pr_flags = '-' x $num_pr_flags;
336 337
337 338
338 # ----- set flags in $pr_flags 339 # ----- set flags in $pr_flags
339 340
340 if ($compatible_cnt > 1) { 341 if ($compatible_cnt > 1) {
341 &set_flag(\$pr_flags, $pr_flag_ 342 &set_flag(\$pr_flags, $pr_flag_pos_mcompatible);
342 } 343 }
343 344
344 if ($config_cnt > 1) { 345 if ($config_cnt > 1) {
345 &set_flag(\$pr_flags, $pr_flag_ 346 &set_flag(\$pr_flags, $pr_flag_pos_mconfig);
346 } 347 }
347 348
348 if ($driver_cnt >= 1) { 349 if ($driver_cnt >= 1) {
349 &set_flag(\$pr_flags, $pr_flag_ 350 &set_flag(\$pr_flags, $pr_flag_pos_driver);
350 } 351 }
351 352
352 if ($driver_cnt > 1) { 353 if ($driver_cnt > 1) {
353 &set_flag(\$pr_flags, $pr_flag_ 354 &set_flag(\$pr_flags, $pr_flag_pos_mdriver);
354 } 355 }
355 356
356 # These strings are the same way the li 357 # These strings are the same way the linux kernel tests.
357 # The ePapr lists of values is slightly 358 # The ePapr lists of values is slightly different.
358 if (!( 359 if (!(
359 ($node_enabled eq "") || 360 ($node_enabled eq "") ||
360 ($node_enabled eq "ok") || 361 ($node_enabled eq "ok") ||
361 ($node_enabled eq "okay") 362 ($node_enabled eq "okay")
362 )) { 363 )) {
363 &set_flag(\$pr_flags, $pr_flag_ 364 &set_flag(\$pr_flags, $pr_flag_pos_node_not_enabled);
364 } 365 }
365 366
366 if ($white_list) { 367 if ($white_list) {
367 &set_flag(\$pr_flags, $pr_flag_ 368 &set_flag(\$pr_flags, $pr_flag_pos_white_list);
368 } 369 }
369 370
370 if (exists($driver_hard_code_list{$comp 371 if (exists($driver_hard_code_list{$compat}) ||
371 (exists($driver_config_hard_code_li 372 (exists($driver_config_hard_code_list{$driver}) &&
372 ($driver ne "no_driver"))) { 373 ($driver ne "no_driver"))) {
373 &set_flag(\$pr_flags, $pr_flag_ 374 &set_flag(\$pr_flags, $pr_flag_pos_hard_coded);
374 } 375 }
375 376
376 my @configs = split(' && ', $config); 377 my @configs = split(' && ', $config);
377 for $configs (@configs) { 378 for $configs (@configs) {
378 $not = $configs =~ /^!/; 379 $not = $configs =~ /^!/;
379 $configs =~ s/^!//; 380 $configs =~ s/^!//;
380 381
381 if (($configs ne "no_config") & 382 if (($configs ne "no_config") && ($configs ne "no_makefile")) {
382 &set_flag(\$pr_flags, $ 383 &set_flag(\$pr_flags, $pr_flag_pos_config);
383 } 384 }
384 385
385 if (($config_cnt >= 1) && 386 if (($config_cnt >= 1) &&
386 ($configs !~ /CONFIG_/) && 387 ($configs !~ /CONFIG_/) &&
387 (($configs ne "no_config") 388 (($configs ne "no_config") && ($configs ne "no_makefile"))) {
388 &set_flag(\$pr_flags, $ 389 &set_flag(\$pr_flags, $pr_flag_pos_config_hard_coded);
389 } 390 }
390 391
391 my $existing_config = $existing 392 my $existing_config = $existing_config{$configs};
392 if ($existing_config eq "m") { 393 if ($existing_config eq "m") {
393 &set_flag(\$pr_flags, $ 394 &set_flag(\$pr_flags, $pr_flag_pos_config_m);
394 # Possible fail, depend 395 # Possible fail, depends on whether built in or
395 # module is desired. 396 # module is desired.
396 &set_flag(\$pr_flags, $ 397 &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
397 } elsif ($existing_config eq "y 398 } elsif ($existing_config eq "y") {
398 &set_flag(\$pr_flags, $ 399 &set_flag(\$pr_flags, $pr_flag_pos_config_y);
399 if ($not) { 400 if ($not) {
400 &set_flag(\$pr_ 401 &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
401 } 402 }
402 } elsif (($config_file) && ($co 403 } elsif (($config_file) && ($configs =~ /CONFIG_/)) {
403 &set_flag(\$pr_flags, $ 404 &set_flag(\$pr_flags, $pr_flag_pos_config_none);
404 if (!$not) { 405 if (!$not) {
405 &set_flag(\$pr_ 406 &set_flag(\$pr_flags, $pr_flag_pos_config_test_fail);
406 } 407 }
407 } 408 }
408 } 409 }
409 410
410 # ----- include / exclude filters 411 # ----- include / exclude filters
411 412
412 if ($include_flag_pattern && ($pr_flags 413 if ($include_flag_pattern && ($pr_flags !~ m/$include_flag_pattern/)) {
413 return 0; 414 return 0;
414 } 415 }
415 416
416 if ($exclude_flag_pattern && ($pr_flags 417 if ($exclude_flag_pattern && ($pr_flags =~ m/$exclude_flag_pattern/)) {
417 return 0; 418 return 0;
418 } 419 }
419 420
420 if ($config_format) { 421 if ($config_format) {
421 print "# "; 422 print "# ";
422 } 423 }
423 print "$pr_flags : "; 424 print "$pr_flags : ";
424 425
425 return 1; 426 return 1;
426 } 427 }
427 428
428 429
429 sub print_node() 430 sub print_node()
430 { 431 {
431 # return number of lines printed 432 # return number of lines printed
432 433
433 # some fields of pn_arg_ref might not b 434 # some fields of pn_arg_ref might not be used in this function, but
434 # extract all of them anyway. 435 # extract all of them anyway.
435 my $pn_arg_ref = shift; 436 my $pn_arg_ref = shift;
436 437
437 my $compat = $pn_arg_ref->{comp 438 my $compat = $pn_arg_ref->{compat};
438 my $compatible_cnt = $pn_arg_ref->{comp 439 my $compatible_cnt = $pn_arg_ref->{compatible_cnt};
439 my $config = $pn_arg_ref->{conf 440 my $config = $pn_arg_ref->{config};
440 my $config_cnt = $pn_arg_ref->{conf 441 my $config_cnt = $pn_arg_ref->{config_cnt};
441 my $driver = $pn_arg_ref->{driv 442 my $driver = $pn_arg_ref->{driver};
442 my $driver_cnt = $pn_arg_ref->{driv 443 my $driver_cnt = $pn_arg_ref->{driver_cnt};
443 my $full_node = $pn_arg_ref->{full 444 my $full_node = $pn_arg_ref->{full_node};
444 my $node = $pn_arg_ref->{node 445 my $node = $pn_arg_ref->{node};
445 my $node_enabled = $pn_arg_ref->{node 446 my $node_enabled = $pn_arg_ref->{node_enabled};
446 my $white_list = $pn_arg_ref->{whit 447 my $white_list = $pn_arg_ref->{white_list};
447 448
448 my $separator; 449 my $separator;
449 450
450 if (! &print_flags($pn_arg_ref)) { 451 if (! &print_flags($pn_arg_ref)) {
451 return 0; 452 return 0;
452 } 453 }
453 454
454 455
455 if ($short_name) { 456 if ($short_name) {
456 print "$node"; 457 print "$node";
457 } else { 458 } else {
458 print "$full_node"; 459 print "$full_node";
459 } 460 }
460 print " : $compat : $driver : $config : 461 print " : $compat : $driver : $config : ";
461 462
462 my @configs = split(' && ', $config); 463 my @configs = split(' && ', $config);
463 464
464 if ($config_file) { 465 if ($config_file) {
465 for $configs (@configs) { 466 for $configs (@configs) {
466 $configs =~ s/^!//; 467 $configs =~ s/^!//;
467 my $existing_config = $ 468 my $existing_config = $existing_config{$configs};
468 if (!$existing_config) 469 if (!$existing_config) {
469 # check for /-m 470 # check for /-m/, /-y/, or /-objs/
470 if ($configs !~ 471 if ($configs !~ /CONFIG_/) {
471 $existi 472 $existing_config = "x";
472 }; 473 };
473 }; 474 };
474 if ($existing_config) { 475 if ($existing_config) {
475 print "$separat 476 print "$separator", "$existing_config";
476 $separator = ", 477 $separator = ", ";
477 } else { 478 } else {
478 print "$separat 479 print "$separator", "n";
479 $separator = ", 480 $separator = ", ";
480 } 481 }
481 } 482 }
482 } else { 483 } else {
483 print "none"; 484 print "none";
484 } 485 }
485 486
486 print "\n"; 487 print "\n";
487 488
488 if ($config_format) { 489 if ($config_format) {
489 for $configs (@configs) { 490 for $configs (@configs) {
490 $not = $configs =~ /^!/ 491 $not = $configs =~ /^!/;
491 $configs =~ s/^!//; 492 $configs =~ s/^!//;
492 my $existing_config = $ 493 my $existing_config = $existing_config{$configs};
493 494
494 if ($not) { 495 if ($not) {
495 if ($configs !~ 496 if ($configs !~ /CONFIG_/) {
496 print " 497 print "# $configs\n";
497 } elsif ($exist 498 } elsif ($existing_config eq "m") {
498 print " 499 print "# $configs is m\n";
499 print " 500 print "# $configs=n\n";
500 } elsif ($exist 501 } elsif ($existing_config eq "y") {
501 print " 502 print "# $configs is set\n";
502 print " 503 print "# $configs=n\n";
503 } else { 504 } else {
504 print " 505 print "# $configs is not set\n";
505 print " 506 print "# $configs=n\n";
506 } 507 }
507 508
508 } else { 509 } else {
509 if ($configs !~ 510 if ($configs !~ /CONFIG_/) {
510 print " 511 print "# $configs\n";
511 } elsif ($exist 512 } elsif ($existing_config eq "m") {
512 print " 513 print "# $configs is m\n";
513 print " 514 print "# $configs=y\n";
514 } elsif ($exist 515 } elsif ($existing_config eq "y") {
515 print " 516 print "# $configs is set\n";
516 print " 517 print "# $configs=y\n";
517 } else { 518 } else {
518 print " 519 print "# $configs is not set\n";
519 print " 520 print "# $configs=y\n";
520 } 521 }
521 } 522 }
522 } 523 }
523 } 524 }
524 525
525 return 1; 526 return 1;
526 } 527 }
527 528
528 529
529 sub scan_makefile 530 sub scan_makefile
530 { 531 {
531 my $pn_arg_ref = shift; 532 my $pn_arg_ref = shift;
532 my $driver = shift; 533 my $driver = shift;
533 534
534 # ----- Find Kconfig symbols that enabl 535 # ----- Find Kconfig symbols that enable driver
535 536
536 my ($dir, $base) = $driver =~ m{(.*)/(. 537 my ($dir, $base) = $driver =~ m{(.*)/(.*).c};
537 538
538 my $makefile = $dir . "/Makefile"; 539 my $makefile = $dir . "/Makefile";
539 if (! -r $makefile) { 540 if (! -r $makefile) {
540 $makefile = $dir . "/Kbuild"; 541 $makefile = $dir . "/Kbuild";
541 } 542 }
542 if (! -r $makefile) { 543 if (! -r $makefile) {
543 my $config; 544 my $config;
544 545
545 $config = 'no_makefile'; 546 $config = 'no_makefile';
546 push @{ $driver_config{$driver} 547 push @{ $driver_config{$driver} }, $config;
547 return; 548 return;
548 } 549 }
549 550
550 if (!open(MAKEFILE_FILE, "<", "$makefil 551 if (!open(MAKEFILE_FILE, "<", "$makefile")) {
551 return; 552 return;
552 } 553 }
553 554
554 my $line; 555 my $line;
555 my @config; 556 my @config;
556 my @if_config; 557 my @if_config;
557 my @make_var; 558 my @make_var;
558 559
559 NEXT_LINE: 560 NEXT_LINE:
560 while ($next_line = <MAKEFILE_FILE>) { 561 while ($next_line = <MAKEFILE_FILE>) {
561 my $config; 562 my $config;
562 my $if_config; 563 my $if_config;
563 my $ifdef; 564 my $ifdef;
564 my $ifeq; 565 my $ifeq;
565 my $ifndef; 566 my $ifndef;
566 my $ifneq; 567 my $ifneq;
567 my $ifdef_config; 568 my $ifdef_config;
568 my $ifeq_config; 569 my $ifeq_config;
569 my $ifndef_config; 570 my $ifndef_config;
570 my $ifneq_config; 571 my $ifneq_config;
571 572
572 chomp($next_line); 573 chomp($next_line);
573 $line = $line . $next_line; 574 $line = $line . $next_line;
574 if ($next_line =~ /\\$/) { 575 if ($next_line =~ /\\$/) {
575 $line =~ s/\\$/ /; 576 $line =~ s/\\$/ /;
576 next NEXT_LINE; 577 next NEXT_LINE;
577 } 578 }
578 if ($line =~ /^\s*#/) { 579 if ($line =~ /^\s*#/) {
579 $line = ""; 580 $line = "";
580 next NEXT_LINE; 581 next NEXT_LINE;
581 } 582 }
582 583
583 # ----- condition ... else ... 584 # ----- condition ... else ... endif
584 585
585 if ($line =~ /^([ ]\s*|)else\b/ 586 if ($line =~ /^([ ]\s*|)else\b/) {
586 $if_config = "!" . pop 587 $if_config = "!" . pop @if_config;
587 $if_config =~ s/^!!//; 588 $if_config =~ s/^!!//;
588 push @if_config, $if_co 589 push @if_config, $if_config;
589 $line =~ s/^([ ]\s*|)el 590 $line =~ s/^([ ]\s*|)else\b//;
590 } 591 }
591 592
592 ($null, $ifeq_config, $ifeq_co 593 ($null, $ifeq_config, $ifeq_config_val ) = $line =~ /^([ ]\s*|)ifeq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/;
593 ($null, $ifneq_config, $ifneq_c 594 ($null, $ifneq_config, $ifneq_config_val) = $line =~ /^([ ]\s*|)ifneq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/;
594 ($null, $ifdef_config) 595 ($null, $ifdef_config) = $line =~ /^([ ]\s*|)ifdef\b.*\b(CONFIG_[A-Za-z0-9_]*)/;
595 ($null, $ifndef_config) 596 ($null, $ifndef_config) = $line =~ /^([ ]\s*|)ifndef\b.*\b(CONFIG_[A-Za-z0-9_]*)/;
596 597
597 ($null, $ifeq) = $line =~ /^( 598 ($null, $ifeq) = $line =~ /^([ ]\s*|)ifeq\b\s*(.*)/;
598 ($null, $ifneq) = $line =~ /^( 599 ($null, $ifneq) = $line =~ /^([ ]\s*|)ifneq\b\s*(.*)/;
599 ($null, $ifdef) = $line =~ /^( 600 ($null, $ifdef) = $line =~ /^([ ]\s*|)ifdef\b\s*(.*)/;
600 ($null, $ifndef) = $line =~ /^( 601 ($null, $ifndef) = $line =~ /^([ ]\s*|)ifndef\b\s*(.*)/;
601 602
602 # Order of tests is important. 603 # Order of tests is important. Prefer "CONFIG_*" regex match over
603 # less specific regex match. 604 # less specific regex match.
604 if ($ifdef_config) { 605 if ($ifdef_config) {
605 $if_config = $ifdef_con 606 $if_config = $ifdef_config;
606 } elsif ($ifeq_config) { 607 } elsif ($ifeq_config) {
607 if ($ifeq_config_val =~ 608 if ($ifeq_config_val =~ /y/) {
608 $if_config = $i 609 $if_config = $ifeq_config;
609 } else { 610 } else {
610 $if_config = "! 611 $if_config = "!" . $ifeq_config;
611 } 612 }
612 } elsif ($ifndef_config) { 613 } elsif ($ifndef_config) {
613 $if_config = "!" . $ifn 614 $if_config = "!" . $ifndef_config;
614 } elsif ($ifneq_config) { 615 } elsif ($ifneq_config) {
615 if ($ifneq_config_val = 616 if ($ifneq_config_val =~ /y/) {
616 $if_config = "! 617 $if_config = "!" . $ifneq_config;
617 } else { 618 } else {
618 $if_config = $i 619 $if_config = $ifneq_config;
619 } 620 }
620 } elsif ($ifdef) { 621 } elsif ($ifdef) {
621 $if_config = $ifdef; 622 $if_config = $ifdef;
622 } elsif ($ifeq) { 623 } elsif ($ifeq) {
623 $if_config = $ifeq; 624 $if_config = $ifeq;
624 } elsif ($ifndef) { 625 } elsif ($ifndef) {
625 $if_config = "!" . $ifn 626 $if_config = "!" . $ifndef;
626 } elsif ($ifneq) { 627 } elsif ($ifneq) {
627 $if_config = "!" . $ifn 628 $if_config = "!" . $ifneq;
628 } else { 629 } else {
629 $if_config = ""; 630 $if_config = "";
630 } 631 }
631 $if_config =~ s/^!!//; 632 $if_config =~ s/^!!//;
632 633
633 if ($if_config) { 634 if ($if_config) {
634 push @if_config, $if_co 635 push @if_config, $if_config;
635 $line = ""; 636 $line = "";
636 next NEXT_LINE; 637 next NEXT_LINE;
637 } 638 }
638 639
639 if ($line =~ /^([ ]\s*|)endif\b 640 if ($line =~ /^([ ]\s*|)endif\b/) {
640 pop @if_config; 641 pop @if_config;
641 $line = ""; 642 $line = "";
642 next NEXT_LINE; 643 next NEXT_LINE;
643 } 644 }
644 645
645 # ----- simple CONFIG_* = *.[co 646 # ----- simple CONFIG_* = *.[co] or xxx [+:?]*= *.[co]
646 # Most makefiles select on *.o, 647 # Most makefiles select on *.o, but
647 # arch/powerpc/boot/Makefile se 648 # arch/powerpc/boot/Makefile selects on *.c
648 649
649 ($config) = $line =~ /(CONFIG_[ 650 ($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$base.[co]\b/;
650 651
651 # ----- match a make variable i 652 # ----- match a make variable instead of *.[co]
652 # Recursively expanded variable 653 # Recursively expanded variables are not handled.
653 654
654 if (!$config) { 655 if (!$config) {
655 my $make_var; 656 my $make_var;
656 ($make_var) = $line =~ 657 ($make_var) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$base.[co]\b/;
657 if ($make_var) { 658 if ($make_var) {
658 if ($make_var = 659 if ($make_var =~ /[a-zA-Z0-9]+-[ym]/) {
659 $config 660 $config = $make_var;
660 } elsif ($make_ 661 } elsif ($make_var =~ /[a-zA-Z0-9]+-objs/) {
661 $config 662 $config = $make_var;
662 } else { 663 } else {
663 push @m 664 push @make_var, $make_var;
664 } 665 }
665 } 666 }
666 } 667 }
667 668
668 if (!$config) { 669 if (!$config) {
669 for $make_var (@make_va 670 for $make_var (@make_var) {
670 ($config) = $li 671 ($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$make_var\b/;
671 last if ($confi 672 last if ($config);
672 } 673 }
673 } 674 }
674 675
675 if (!$config) { 676 if (!$config) {
676 for $make_var (@make_va 677 for $make_var (@make_var) {
677 ($config) = $li 678 ($config) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$make_var\b/;
678 last if ($confi 679 last if ($config);
679 } 680 }
680 } 681 }
681 682
682 # ----- next if no config found 683 # ----- next if no config found
683 684
684 if (!$config) { 685 if (!$config) {
685 $line = ""; 686 $line = "";
686 next NEXT_LINE; 687 next NEXT_LINE;
687 } 688 }
688 689
689 for $if_config (@if_config) { 690 for $if_config (@if_config) {
690 $config = $if_config . 691 $config = $if_config . " && " . $config;
691 } 692 }
692 693
693 push @{ $driver_config{$driver} 694 push @{ $driver_config{$driver} }, $config;
694 695
695 $line = ""; 696 $line = "";
696 } 697 }
697 698
698 close(MAKEFILE_FILE); 699 close(MAKEFILE_FILE);
699 700
700 } 701 }
701 702
702 703
703 sub find_kconfig 704 sub find_kconfig
704 { 705 {
705 my $pn_arg_ref = shift; 706 my $pn_arg_ref = shift;
706 my $driver = shift; 707 my $driver = shift;
707 708
708 my $lines_printed = 0; 709 my $lines_printed = 0;
709 my @configs; 710 my @configs;
710 711
711 if (!@{ $driver_config{$driver} }) { 712 if (!@{ $driver_config{$driver} }) {
712 &scan_makefile($pn_arg_ref, $dr 713 &scan_makefile($pn_arg_ref, $driver);
713 if (!@{ $driver_config{$driver} 714 if (!@{ $driver_config{$driver} }) {
714 push @{ $driver_config{ 715 push @{ $driver_config{$driver} }, "no_config";
715 } 716 }
716 } 717 }
717 718
718 @configs = @{ $driver_config{$driver} } 719 @configs = @{ $driver_config{$driver} };
719 720
720 $$pn_arg_ref{config_cnt} = $#configs + 721 $$pn_arg_ref{config_cnt} = $#configs + 1;
721 for my $config (@configs) { 722 for my $config (@configs) {
722 $$pn_arg_ref{config} = $config; 723 $$pn_arg_ref{config} = $config;
723 $lines_printed += &print_node($ 724 $lines_printed += &print_node($pn_arg_ref);
724 } 725 }
725 726
726 return $lines_printed; 727 return $lines_printed;
727 } 728 }
728 729
729 730
730 sub handle_compatible() 731 sub handle_compatible()
731 { 732 {
732 my $full_node = shift; 733 my $full_node = shift;
733 my $node = shift; 734 my $node = shift;
734 my $compatible = shift; 735 my $compatible = shift;
735 my $node_enabled = shift; 736 my $node_enabled = shift;
736 737
737 my $compat; 738 my $compat;
738 my $lines_printed = 0; 739 my $lines_printed = 0;
739 my %pn_arg = (); 740 my %pn_arg = ();
740 741
741 return if (!$node or !$compatible); 742 return if (!$node or !$compatible);
742 743
743 # Do not process compatible property of 744 # Do not process compatible property of root node,
744 # it is used to match board, not to bin 745 # it is used to match board, not to bind a driver.
745 return if ($node eq "/"); 746 return if ($node eq "/");
746 747
747 $pn_arg{full_node} = $full_node; 748 $pn_arg{full_node} = $full_node;
748 $pn_arg{node} = $node; 749 $pn_arg{node} = $node;
749 $pn_arg{node_enabled} = $node_enabled; 750 $pn_arg{node_enabled} = $node_enabled;
750 751
751 my @compatibles = split('", "', $compat 752 my @compatibles = split('", "', $compatible);
752 753
753 $compatibles[0] =~ s/^"//; 754 $compatibles[0] =~ s/^"//;
754 $compatibles[$#compatibles] =~ s/"$//; 755 $compatibles[$#compatibles] =~ s/"$//;
755 756
756 $pn_arg{compatible_cnt} = $#compatibles 757 $pn_arg{compatible_cnt} = $#compatibles + 1;
757 758
758 COMPAT: 759 COMPAT:
759 for $compat (@compatibles) { 760 for $compat (@compatibles) {
760 761
761 $pn_arg{compat} = $compat; 762 $pn_arg{compat} = $compat;
762 $pn_arg{driver_cnt} = 0; 763 $pn_arg{driver_cnt} = 0;
763 $pn_arg{white_list} = 0; 764 $pn_arg{white_list} = 0;
764 765
765 if (exists($compat_white_list{$ 766 if (exists($compat_white_list{$compat})) {
766 $pn_arg{white_list} = 1 767 $pn_arg{white_list} = 1;
767 $pn_arg{driver} = " 768 $pn_arg{driver} = "no_driver";
768 $pn_arg{config_cnt} = 1 769 $pn_arg{config_cnt} = 1;
769 $pn_arg{config} = " 770 $pn_arg{config} = "no_config";
770 $lines_printed += &prin 771 $lines_printed += &print_node(\%pn_arg);
771 next COMPAT; 772 next COMPAT;
772 } 773 }
773 774
774 # ----- if compat previously se 775 # ----- if compat previously seen, use cached info
775 776
776 if (exists($compat_driver{$comp 777 if (exists($compat_driver{$compat})) {
777 for my $driver (@{ $com 778 for my $driver (@{ $compat_driver{$compat} }) {
778 $pn_arg{driver} 779 $pn_arg{driver} = $driver;
779 $pn_arg{driver_ 780 $pn_arg{driver_cnt} = $driver_count{$compat};
780 $pn_arg{config_ 781 $pn_arg{config_cnt} = $#{ $driver_config{$driver}} + 1;
781 782
782 for my $config 783 for my $config (@{ $driver_config{$driver} }) {
783 $pn_arg 784 $pn_arg{config} = $config;
784 $lines_ 785 $lines_printed += &print_node(\%pn_arg);
785 } 786 }
786 787
787 if (!@{ $driver 788 if (!@{ $driver_config{$driver} }) {
788 # no co 789 # no config cached yet
789 # $driv 790 # $driver in %driver_hard_code_list
790 # but n 791 # but not %driver_config_hard_code_list
791 $lines_ 792 $lines_printed += &find_kconfig(\%pn_arg, $driver);
792 } 793 }
793 } 794 }
794 next COMPAT; 795 next COMPAT;
795 } 796 }
796 797
797 798
798 # ----- Find drivers (source fi 799 # ----- Find drivers (source files that contain compatible)
799 800
800 # this will miss arch/sparc/inc 801 # this will miss arch/sparc/include/asm/parport.h
801 # It is better to move the comp 802 # It is better to move the compatible out of the .h
802 # than to add *.h. to the files 803 # than to add *.h. to the files list, because *.h generates
803 # a lot of false negatives. 804 # a lot of false negatives.
804 my $files = '"*.c"'; 805 my $files = '"*.c"';
805 my $drivers = `git grep -l '"$c 806 my $drivers = `git grep -l '"$compat"' -- $files`;
806 chomp($drivers); 807 chomp($drivers);
807 if ($drivers eq "") { 808 if ($drivers eq "") {
808 $pn_arg{driver} = "no_d 809 $pn_arg{driver} = "no_driver";
809 $pn_arg{config_cnt} = 1 810 $pn_arg{config_cnt} = 1;
810 $pn_arg{config} = "no_c 811 $pn_arg{config} = "no_config";
811 push @{ $compat_driver{ 812 push @{ $compat_driver{$compat} }, "no_driver";
812 $lines_printed += &prin 813 $lines_printed += &print_node(\%pn_arg);
813 next COMPAT; 814 next COMPAT;
814 } 815 }
815 816
816 my @drivers = split("\n", $driv 817 my @drivers = split("\n", $drivers);
817 $driver_count{$compat} = $#driv 818 $driver_count{$compat} = $#drivers + 1;
818 $pn_arg{driver_cnt} = $#driv 819 $pn_arg{driver_cnt} = $#drivers + 1;
819 820
820 DRIVER: 821 DRIVER:
821 for my $driver (@drivers) { 822 for my $driver (@drivers) {
822 push @{ $compat_driver{ 823 push @{ $compat_driver{$compat} }, $driver;
823 $pn_arg{driver} = $driv 824 $pn_arg{driver} = $driver;
824 825
825 # ----- if driver previ 826 # ----- if driver previously seen, use cached info
826 827
827 $pn_arg{config_cnt} = $ 828 $pn_arg{config_cnt} = $#{ $driver_config{$driver} } + 1;
828 for my $config (@{ $dri 829 for my $config (@{ $driver_config{$driver} }) {
829 $pn_arg{config} 830 $pn_arg{config} = $config;
830 $lines_printed 831 $lines_printed += &print_node(\%pn_arg);
831 } 832 }
832 if (@{ $driver_config{$ 833 if (@{ $driver_config{$driver} }) {
833 next DRIVER; 834 next DRIVER;
834 } 835 }
835 836
836 if ($black_list_driver) 837 if ($black_list_driver) {
837 for $black (@bl 838 for $black (@black_list_driver) {
838 next DR 839 next DRIVER if ($driver =~ /^$black$/);
839 } 840 }
840 } 841 }
841 842
842 843
843 # ----- Find Kconfig sy 844 # ----- Find Kconfig symbols that enable driver
844 845
845 $lines_printed += &find 846 $lines_printed += &find_kconfig(\%pn_arg, $driver);
846 847
847 } 848 }
848 } 849 }
849 850
850 # White space (line) between nodes for 851 # White space (line) between nodes for readability.
851 # Each node may report several compatib 852 # Each node may report several compatibles.
852 # For each compatible, multiple drivers 853 # For each compatible, multiple drivers may be reported.
853 # For each driver, multiple CONFIG_ opt 854 # For each driver, multiple CONFIG_ options may be reported.
854 if ($lines_printed) { 855 if ($lines_printed) {
855 print "\n"; 856 print "\n";
856 } 857 }
857 } 858 }
858 859
859 sub read_dts() 860 sub read_dts()
860 { 861 {
861 my $file = shift; 862 my $file = shift;
862 863
863 my $compatible = ""; 864 my $compatible = "";
864 my $line; 865 my $line;
865 my $node = ""; 866 my $node = "";
866 my $node_enabled = ""; 867 my $node_enabled = "";
867 868
868 if (! -r $file) { 869 if (! -r $file) {
869 print STDERR "file '$file' is n 870 print STDERR "file '$file' is not readable or does not exist\n";
870 exit 3; 871 exit 3;
871 } 872 }
872 873
873 if (!open(DT_FILE, "-|", "$dtx_diff $fi 874 if (!open(DT_FILE, "-|", "$dtx_diff $file")) {
874 print STDERR "\n"; 875 print STDERR "\n";
875 print STDERR "shell command fai 876 print STDERR "shell command failed:\n";
876 print STDERR " $dtx_diff $fil 877 print STDERR " $dtx_diff $file\n";
877 print STDERR "\n"; 878 print STDERR "\n";
878 exit 3; 879 exit 3;
879 } 880 }
880 881
881 FILE: 882 FILE:
882 while ($line = <DT_FILE>) { 883 while ($line = <DT_FILE>) {
883 chomp($line); 884 chomp($line);
884 885
885 if ($line =~ /{/) { 886 if ($line =~ /{/) {
886 887
887 &handle_compatible($ful 888 &handle_compatible($full_node, $node, $compatible,
888 $nod 889 $node_enabled);
889 890
890 while ($end_node_count- 891 while ($end_node_count-- > 0) {
891 pop @full_node; 892 pop @full_node;
892 }; 893 };
893 $end_node_count = 0; 894 $end_node_count = 0;
894 $full_node = @full_node 895 $full_node = @full_node[-1];
895 896
896 $node = $line; 897 $node = $line;
897 $node =~ s/^\s*(.*)\s+\ 898 $node =~ s/^\s*(.*)\s+\{.*/$1/;
898 $node =~ s/.*: //; 899 $node =~ s/.*: //;
899 if ($node eq '/' ) { 900 if ($node eq '/' ) {
900 $full_node = '/ 901 $full_node = '/';
901 } elsif ($full_node ne 902 } elsif ($full_node ne '/') {
902 $full_node = $f 903 $full_node = $full_node . '/' . $node;
903 } else { 904 } else {
904 $full_node = '/ 905 $full_node = '/' . $node;
905 } 906 }
906 push @full_node, $full_ 907 push @full_node, $full_node;
907 908
908 $compatible = ""; 909 $compatible = "";
909 $node_enabled = ""; 910 $node_enabled = "";
910 next FILE; 911 next FILE;
911 } 912 }
912 913
913 if ($line =~ /}/) { 914 if ($line =~ /}/) {
914 $end_node_count++; 915 $end_node_count++;
915 } 916 }
916 917
917 if ($line =~ /(\s+|^)status =/) 918 if ($line =~ /(\s+|^)status =/) {
918 $node_enabled = $line; 919 $node_enabled = $line;
919 $node_enabled =~ s/^\t* 920 $node_enabled =~ s/^\t*//;
920 $node_enabled =~ s/^sta 921 $node_enabled =~ s/^status = "//;
921 $node_enabled =~ s/";$/ 922 $node_enabled =~ s/";$//;
922 next FILE; 923 next FILE;
923 } 924 }
924 925
925 if ($line =~ /(\s+|^)compatible 926 if ($line =~ /(\s+|^)compatible =/) {
926 # Extract all compatibl 927 # Extract all compatible entries for this device
927 # White space matching 928 # White space matching here and in handle_compatible() is
928 # precise, because inpu 929 # precise, because input format is the output of dtc,
929 # which is invoked by d 930 # which is invoked by dtx_diff.
930 $compatible = $line; 931 $compatible = $line;
931 $compatible =~ s/^\t*// 932 $compatible =~ s/^\t*//;
932 $compatible =~ s/^compa 933 $compatible =~ s/^compatible = //;
933 $compatible =~ s/;$//; 934 $compatible =~ s/;$//;
934 } 935 }
935 } 936 }
936 937
937 &handle_compatible($full_node, $node, $ 938 &handle_compatible($full_node, $node, $compatible, $node_enabled);
938 939
939 close(DT_FILE); 940 close(DT_FILE);
940 } 941 }
941 942
942 943
943 sub read_config_file() 944 sub read_config_file()
944 { 945 {
945 if (! -r $config_file) { 946 if (! -r $config_file) {
946 print STDERR "file '$config_fil 947 print STDERR "file '$config_file' is not readable or does not exist\n";
947 exit 2; 948 exit 2;
948 } 949 }
949 950
950 if (!open(CONFIG_FILE, "<", "$config_fi 951 if (!open(CONFIG_FILE, "<", "$config_file")) {
951 print STDERR "open $config_file 952 print STDERR "open $config_file failed\n";
952 exit 2; 953 exit 2;
953 } 954 }
954 955
955 my @line; 956 my @line;
956 957
957 LINE: 958 LINE:
958 while ($line = <CONFIG_FILE>) { 959 while ($line = <CONFIG_FILE>) {
959 chomp($line); 960 chomp($line);
960 next LINE if ($line =~ /^\s*#/) 961 next LINE if ($line =~ /^\s*#/);
961 next LINE if ($line =~ /^\s*$/) 962 next LINE if ($line =~ /^\s*$/);
962 @line = split /=/, $line; 963 @line = split /=/, $line;
963 $existing_config{@line[0]} = @l 964 $existing_config{@line[0]} = @line[1];
964 } 965 }
965 966
966 close(CONFIG_FILE); 967 close(CONFIG_FILE);
967 } 968 }
968 969
969 970
970 sub cmd_line_err() 971 sub cmd_line_err()
971 { 972 {
972 my $msg = shift; 973 my $msg = shift;
973 974
974 print STDERR "\n"; 975 print STDERR "\n";
975 print STDERR " ERROR processing comma 976 print STDERR " ERROR processing command line options\n";
976 print STDERR " $msg\n" if ($msg 977 print STDERR " $msg\n" if ($msg ne "");
977 print STDERR "\n"; 978 print STDERR "\n";
978 print STDERR " For help, type '$scrip 979 print STDERR " For help, type '$script_name --help'\n";
979 print STDERR "\n"; 980 print STDERR "\n";
980 } 981 }
981 982
982 983
983 # -------------------------------------------- 984 # -----------------------------------------------------------------------------
984 # program entry point 985 # program entry point
985 986
986 Getopt::Long::Configure("no_ignore_case", "bun 987 Getopt::Long::Configure("no_ignore_case", "bundling");
987 988
988 if (!GetOptions( 989 if (!GetOptions(
989 "c=s" => \$config_file, 990 "c=s" => \$config_file,
990 "config=s" => \$config_file, 991 "config=s" => \$config_file,
991 "config-format" => \$config_format, 992 "config-format" => \$config_format,
992 "exclude-flag=s" => \@exclude_flag, 993 "exclude-flag=s" => \@exclude_flag,
993 "h" => \$help, 994 "h" => \$help,
994 "help" => \$help, 995 "help" => \$help,
995 "black-list-driver" => \$black_list_dri 996 "black-list-driver" => \$black_list_driver,
996 "white-list-config" => \$white_list_con 997 "white-list-config" => \$white_list_config,
997 "white-list-driver" => \$white_list_dri 998 "white-list-driver" => \$white_list_driver,
998 "include-flag=s" => \@include_flag, 999 "include-flag=s" => \@include_flag,
999 "include-suspect" => \$include_suspec 1000 "include-suspect" => \$include_suspect,
1000 "short-name" => \$short_name, 1001 "short-name" => \$short_name,
1001 "show-lists" => \$show_lists, 1002 "show-lists" => \$show_lists,
1002 "version" => \$version, 1003 "version" => \$version,
1003 )) { 1004 )) {
1004 1005
1005 &cmd_line_err(); 1006 &cmd_line_err();
1006 1007
1007 exit 1; 1008 exit 1;
1008 } 1009 }
1009 1010
1010 1011
1011 my $exit_after_messages = 0; 1012 my $exit_after_messages = 0;
1012 1013
1013 if ($version) { 1014 if ($version) {
1014 print STDERR "\n$script_name $VUFX\n\ 1015 print STDERR "\n$script_name $VUFX\n\n";
1015 $exit_after_messages = 1; 1016 $exit_after_messages = 1;
1016 } 1017 }
1017 1018
1018 1019
1019 if ($help) { 1020 if ($help) {
1020 &usage; 1021 &usage;
1021 $exit_after_messages = 1; 1022 $exit_after_messages = 1;
1022 } 1023 }
1023 1024
1024 1025
1025 if ($show_lists) { 1026 if ($show_lists) {
1026 1027
1027 print "\n"; 1028 print "\n";
1028 print "These compatibles are hard code 1029 print "These compatibles are hard coded to have no driver.\n";
1029 print "\n"; 1030 print "\n";
1030 for my $compat (sort keys %compat_whit 1031 for my $compat (sort keys %compat_white_list) {
1031 print " $compat\n"; 1032 print " $compat\n";
1032 } 1033 }
1033 1034
1034 1035
1035 print "\n\n"; 1036 print "\n\n";
1036 print "The driver for these compatible 1037 print "The driver for these compatibles is hard coded (white list).\n";
1037 print "\n"; 1038 print "\n";
1038 my $max_compat_len = 0; 1039 my $max_compat_len = 0;
1039 for my $compat (sort keys %driver_hard 1040 for my $compat (sort keys %driver_hard_code_list) {
1040 if (length $compat > $max_comp 1041 if (length $compat > $max_compat_len) {
1041 $max_compat_len = leng 1042 $max_compat_len = length $compat;
1042 } 1043 }
1043 } 1044 }
1044 for my $compat (sort keys %driver_hard 1045 for my $compat (sort keys %driver_hard_code_list) {
1045 if (($driver ne "hardcoded_no_ 1046 if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) {
1046 my $first = 1; 1047 my $first = 1;
1047 for my $driver (@{ $dr 1048 for my $driver (@{ $driver_hard_code_list{$compat} }) {
1048 if ($first) { 1049 if ($first) {
1049 print 1050 print " $compat";
1050 print 1051 print " " x ($max_compat_len - length $compat);
1051 $first 1052 $first = 0;
1052 } else { 1053 } else {
1053 print 1054 print " ", " " x $max_compat_len;
1054 } 1055 }
1055 print " $driv 1056 print " $driver\n";
1056 } 1057 }
1057 } 1058 }
1058 } 1059 }
1059 1060
1060 1061
1061 print "\n\n"; 1062 print "\n\n";
1062 print "The configuration option for th 1063 print "The configuration option for these drivers is hard coded (white list).\n";
1063 print "\n"; 1064 print "\n";
1064 my $max_driver_len = 0; 1065 my $max_driver_len = 0;
1065 for my $driver (sort keys %driver_conf 1066 for my $driver (sort keys %driver_config_hard_code_list) {
1066 if (length $driver > $max_driv 1067 if (length $driver > $max_driver_len) {
1067 $max_driver_len = leng 1068 $max_driver_len = length $driver;
1068 } 1069 }
1069 } 1070 }
1070 for my $driver (sort keys %driver_conf 1071 for my $driver (sort keys %driver_config_hard_code_list) {
1071 if (($driver ne "hardcoded_no_ 1072 if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) {
1072 my $first = 1; 1073 my $first = 1;
1073 for my $config (@{ $dr 1074 for my $config (@{ $driver_config_hard_code_list{$driver} }) {
1074 if ($first) { 1075 if ($first) {
1075 print 1076 print " $driver";
1076 print 1077 print " " x ($max_driver_len - length $driver);
1077 $first 1078 $first = 0;
1078 } else { 1079 } else {
1079 print 1080 print " ", " " x $max_driver_len;
1080 } 1081 }
1081 print " $conf 1082 print " $config\n";
1082 } 1083 }
1083 } 1084 }
1084 } 1085 }
1085 1086
1086 1087
1087 print "\n\n"; 1088 print "\n\n";
1088 print "These drivers are black listed. 1089 print "These drivers are black listed.\n";
1089 print "\n"; 1090 print "\n";
1090 for my $driver (@black_list_driver) { 1091 for my $driver (@black_list_driver) {
1091 print " $driver\n"; 1092 print " $driver\n";
1092 } 1093 }
1093 1094
1094 print "\n"; 1095 print "\n";
1095 1096
1096 $exit_after_messages = 1; 1097 $exit_after_messages = 1;
1097 } 1098 }
1098 1099
1099 1100
1100 if ($exit_after_messages) { 1101 if ($exit_after_messages) {
1101 exit 0; 1102 exit 0;
1102 } 1103 }
1103 1104
1104 1105
1105 $exclude_flag_pattern = "["; 1106 $exclude_flag_pattern = "[";
1106 for my $exclude_flag (@exclude_flag) { 1107 for my $exclude_flag (@exclude_flag) {
1107 $exclude_flag_pattern = $exclude_flag_ 1108 $exclude_flag_pattern = $exclude_flag_pattern . $exclude_flag;
1108 } 1109 }
1109 $exclude_flag_pattern = $exclude_flag_pattern 1110 $exclude_flag_pattern = $exclude_flag_pattern . "]";
1110 # clean up if empty 1111 # clean up if empty
1111 $exclude_flag_pattern =~ s/^\[\]$//; 1112 $exclude_flag_pattern =~ s/^\[\]$//;
1112 1113
1113 1114
1114 $include_flag_pattern = "["; 1115 $include_flag_pattern = "[";
1115 for my $include_flag (@include_flag) { 1116 for my $include_flag (@include_flag) {
1116 $include_flag_pattern = $include_flag_ 1117 $include_flag_pattern = $include_flag_pattern . $include_flag;
1117 } 1118 }
1118 $include_flag_pattern = $include_flag_pattern 1119 $include_flag_pattern = $include_flag_pattern . "]";
1119 # clean up if empty 1120 # clean up if empty
1120 $include_flag_pattern =~ s/^\[\]$//; 1121 $include_flag_pattern =~ s/^\[\]$//;
1121 1122
1122 1123
1123 if ($exclude_flag_pattern) { 1124 if ($exclude_flag_pattern) {
1124 my $found = 0; 1125 my $found = 0;
1125 for $pr_flag_value (@pr_flag_value) { 1126 for $pr_flag_value (@pr_flag_value) {
1126 if ($exclude_flag_pattern =~ m 1127 if ($exclude_flag_pattern =~ m/$pr_flag_value/) {
1127 $found = 1; 1128 $found = 1;
1128 } 1129 }
1129 } 1130 }
1130 if (!$found) { 1131 if (!$found) {
1131 &cmd_line_err("invalid value f 1132 &cmd_line_err("invalid value for FLAG in --exclude-flag\n");
1132 exit 1 1133 exit 1
1133 } 1134 }
1134 } 1135 }
1135 1136
1136 if ($include_flag_pattern) { 1137 if ($include_flag_pattern) {
1137 my $found = 0; 1138 my $found = 0;
1138 for $pr_flag_value (@pr_flag_value) { 1139 for $pr_flag_value (@pr_flag_value) {
1139 if ($include_flag_pattern =~ m 1140 if ($include_flag_pattern =~ m/$pr_flag_value/) {
1140 $found = 1; 1141 $found = 1;
1141 } 1142 }
1142 } 1143 }
1143 if (!$found) { 1144 if (!$found) {
1144 &cmd_line_err("invalid value f 1145 &cmd_line_err("invalid value for FLAG in --include-flag\n");
1145 exit 1 1146 exit 1
1146 } 1147 }
1147 } 1148 }
1148 1149
1149 if ($include_suspect) { 1150 if ($include_suspect) {
1150 $include_flag_pattern =~ s/\[//; 1151 $include_flag_pattern =~ s/\[//;
1151 $include_flag_pattern =~ s/\]//; 1152 $include_flag_pattern =~ s/\]//;
1152 $include_flag_pattern = "[" . $include 1153 $include_flag_pattern = "[" . $include_flag_pattern . "A-Z]";
1153 } 1154 }
1154 1155
1155 if ($exclude_flag_pattern =~ m/$include_flag_ 1156 if ($exclude_flag_pattern =~ m/$include_flag_pattern/) {
1156 &cmd_line_err("the same flag appears i 1157 &cmd_line_err("the same flag appears in both --exclude-flag and --include-flag or --include-suspect\n");
1157 exit 1 1158 exit 1
1158 } 1159 }
1159 1160
1160 1161
1161 # ($#ARGV < 0) is valid for --help, --version 1162 # ($#ARGV < 0) is valid for --help, --version
1162 if ($#ARGV < 0) { 1163 if ($#ARGV < 0) {
1163 &cmd_line_err("device-tree... is requi 1164 &cmd_line_err("device-tree... is required");
1164 exit 1 1165 exit 1
1165 } 1166 }
1166 1167
1167 1168
1168 if ($config_file) { 1169 if ($config_file) {
1169 &read_config_file(); 1170 &read_config_file();
1170 } 1171 }
1171 1172
1172 1173
1173 # avoid pushing duplicates for this value 1174 # avoid pushing duplicates for this value
1174 $driver = "hardcoded_no_driver"; 1175 $driver = "hardcoded_no_driver";
1175 for $config ( @{ $driver_config_hard_code_lis 1176 for $config ( @{ $driver_config_hard_code_list{$driver} } ) {
1176 push @{ $driver_config{$driver} }, $co 1177 push @{ $driver_config{$driver} }, $config;
1177 } 1178 }
1178 1179
1179 if ($white_list_driver) { 1180 if ($white_list_driver) {
1180 for my $compat (keys %driver_hard_code 1181 for my $compat (keys %driver_hard_code_list) {
1181 for my $driver (@{ $driver_har 1182 for my $driver (@{ $driver_hard_code_list{$compat} }) {
1182 push @{ $compat_driver 1183 push @{ $compat_driver{$compat} }, $driver;
1183 if ($driver ne "hardco 1184 if ($driver ne "hardcoded_no_driver") {
1184 $driver_count{ 1185 $driver_count{$compat} = scalar @{ $compat_driver{$compat} };
1185 } 1186 }
1186 } 1187 }
1187 } 1188 }
1188 } 1189 }
1189 1190
1190 if ($white_list_config) { 1191 if ($white_list_config) {
1191 for my $driver (keys %driver_config_ha 1192 for my $driver (keys %driver_config_hard_code_list) {
1192 if ($driver ne "hardcoded_no_d 1193 if ($driver ne "hardcoded_no_driver") {
1193 for $config ( @{ $driv 1194 for $config ( @{ $driver_config_hard_code_list{$driver} } ) {
1194 push @{ $drive 1195 push @{ $driver_config{$driver} }, $config;
1195 } 1196 }
1196 } 1197 }
1197 } 1198 }
1198 } 1199 }
1199 1200
1200 if (-x "scripts/dtc/dtx_diff") { 1201 if (-x "scripts/dtc/dtx_diff") {
1201 $dtx_diff = "scripts/dtc/dtx_diff"; 1202 $dtx_diff = "scripts/dtc/dtx_diff";
1202 } else { 1203 } else {
1203 1204
1204 print STDERR "\n"; 1205 print STDERR "\n";
1205 print STDERR "$script_name must be run 1206 print STDERR "$script_name must be run from the root directory of a Linux kernel tree\n";
1206 print STDERR "\n"; 1207 print STDERR "\n";
1207 exit 3; 1208 exit 3;
1208 } 1209 }
1209 1210
1210 for $file (@ARGV) { 1211 for $file (@ARGV) {
1211 &read_dts($file); 1212 &read_dts($file);
1212 } 1213 }
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