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SubjectRe: [PATCH 2/2] gpio: arizona: Add support for GPIOs that need to be maintained
Hi Charles,

[auto build test ERROR on gpio/for-next]
[also build test ERROR on v4.11-rc5 next-20170407]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Charles-Keepax/mfd-arizona-Add-GPIO-maintain-state-flag/20170408-111119
base: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
config: x86_64-randconfig-x003-201714 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All error/warnings (new ones prefixed by >>):

drivers//gpio/gpio-arizona.c: In function 'arizona_gpio_direction_in':
drivers//gpio/gpio-arizona.c:44:3: error: implicit declaration of function 'pm_runtime_mark_last_busy' [-Werror=implicit-function-declaration]
pm_runtime_mark_last_busy(chip->parent);
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers//gpio/gpio-arizona.c:45:3: error: implicit declaration of function 'pm_runtime_put_autosuspend' [-Werror=implicit-function-declaration]
pm_runtime_put_autosuspend(chip->parent);
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers//gpio/gpio-arizona.c: In function 'arizona_gpio_set':
drivers//gpio/gpio-arizona.c:93:9: error: implicit declaration of function 'pm_runtime_get_sync' [-Werror=implicit-function-declaration]
ret = pm_runtime_get_sync(chip->parent);
^~~~~~~~~~~~~~~~~~~
drivers//gpio/gpio-arizona.c:96:11: warning: 'return' with a value, in function returning void
return ret;
^~~
drivers//gpio/gpio-arizona.c:82:13: note: declared here
static void arizona_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
^~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:4:0,
from include/linux/kernel.h:6,
from drivers//gpio/gpio-arizona.c:15:
drivers//gpio/gpio-arizona.c: In function 'arizona_gpio_of_xlate':
>> drivers//gpio/gpio-arizona.c:115:33: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^
include/linux/compiler.h:160:30: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> drivers//gpio/gpio-arizona.c:115:2: note: in expansion of macro 'if'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^~
>> drivers//gpio/gpio-arizona.c:115:33: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^
include/linux/compiler.h:160:42: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> drivers//gpio/gpio-arizona.c:115:2: note: in expansion of macro 'if'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^~
>> drivers//gpio/gpio-arizona.c:115:33: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^
include/linux/compiler.h:171:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^~~~
>> drivers//gpio/gpio-arizona.c:115:2: note: in expansion of macro 'if'
if (gpiospec->args_count < chip->of_gpio_n_cells)
^~
drivers//gpio/gpio-arizona.c: At top level:
>> drivers//gpio/gpio-arizona.c:138:2: error: unknown field 'of_xlate' specified in initializer
.of_xlate = arizona_gpio_of_xlate,
^
>> drivers//gpio/gpio-arizona.c:138:15: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.of_xlate = arizona_gpio_of_xlate,
^~~~~~~~~~~~~~~~~~~~~
drivers//gpio/gpio-arizona.c:138:15: note: (near initialization for 'template_chip.read_reg')
>> drivers//gpio/gpio-arizona.c:139:2: error: unknown field 'of_gpio_n_cells' specified in initializer
.of_gpio_n_cells = 2,
^
>> drivers//gpio/gpio-arizona.c:139:21: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
.of_gpio_n_cells = 2,
^
drivers//gpio/gpio-arizona.c:139:21: note: (near initialization for 'template_chip.write_reg')
drivers//gpio/gpio-arizona.c: In function 'arizona_gpio_probe':
drivers//gpio/gpio-arizona.c:185:2: error: implicit declaration of function 'pm_runtime_enable' [-Werror=implicit-function-declaration]
pm_runtime_enable(&pdev->dev);
^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +115 drivers//gpio/gpio-arizona.c

9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
> 15 #include <linux/kernel.h>
16 #include <linux/slab.h>
17 #include <linux/module.h>
18 #include <linux/gpio.h>
19 #include <linux/platform_device.h>
20 #include <linux/seq_file.h>
21
22 #include <linux/mfd/arizona/core.h>
23 #include <linux/mfd/arizona/pdata.h>
24 #include <linux/mfd/arizona/registers.h>
25
26 #define ARIZONA_GP_STATE_OUTPUT 0x00000001
27
28 struct arizona_gpio {
29 struct arizona *arizona;
30 struct gpio_chip gpio_chip;
31 int status[ARIZONA_MAX_GPIO];
32 };
33
34 static int arizona_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
35 {
36 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip);
37 struct arizona *arizona = arizona_gpio->arizona;
38 int status = arizona_gpio->status[offset];
39
40 status &= (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT);
41 if (status == (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT)) {
42 arizona_gpio->status[offset] &= ~ARIZONA_GP_STATE_OUTPUT;
43
44 pm_runtime_mark_last_busy(chip->parent);
45 pm_runtime_put_autosuspend(chip->parent);
46 }
47
48 return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
49 ARIZONA_GPN_DIR, ARIZONA_GPN_DIR);
50 }
51
52 static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset)
53 {
54 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip);
55 struct arizona *arizona = arizona_gpio->arizona;
56 unsigned int val;
57 int ret;
58
59 ret = regmap_read(arizona->regmap, ARIZONA_GPIO1_CTRL + offset, &val);
60 if (ret < 0)
61 return ret;
62
63 if (val & ARIZONA_GPN_LVL)
64 return 1;
65 else
66 return 0;
67 }
68
69 static int arizona_gpio_direction_out(struct gpio_chip *chip,
70 unsigned offset, int value)
71 {
72 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip);
73 struct arizona *arizona = arizona_gpio->arizona;
74
75 if (value)
76 value = ARIZONA_GPN_LVL;
77
78 return regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
79 ARIZONA_GPN_DIR | ARIZONA_GPN_LVL, value);
80 }
81
> 82 static void arizona_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
83 {
84 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip);
85 struct arizona *arizona = arizona_gpio->arizona;
86 int status = arizona_gpio->status[offset];
87 int ret;
88
89 status &= (ARIZONA_GP_MAINTAIN | ARIZONA_GP_STATE_OUTPUT);
90 if (status == ARIZONA_GP_MAINTAIN) {
91 arizona_gpio->status[offset] |= ARIZONA_GP_STATE_OUTPUT;
92
93 ret = pm_runtime_get_sync(chip->parent);
94 if (ret < 0) {
95 dev_err(chip->parent, "Failed to resume: %d\n", ret);
96 return ret;
97 }
98 }
99
100 if (value)
101 value = ARIZONA_GPN_LVL;
102
103 regmap_update_bits(arizona->regmap, ARIZONA_GPIO1_CTRL + offset,
104 ARIZONA_GPN_LVL, value);
105 }
106
107 static int arizona_gpio_of_xlate(struct gpio_chip *chip,
108 const struct of_phandle_args *gpiospec,
109 u32 *flags)
110 {
111 struct arizona_gpio *arizona_gpio = gpiochip_get_data(chip);
112 u32 offset = gpiospec->args[0];
113 u32 bits = gpiospec->args[1];
114
> 115 if (gpiospec->args_count < chip->of_gpio_n_cells)
116 return -EINVAL;
117
118 if (offset >= chip->ngpio)
119 return -EINVAL;
120
121 if (flags)
122 *flags = bits & ~ARIZONA_GP_MAINTAIN;
123
124 if (bits & ARIZONA_GP_MAINTAIN)
125 arizona_gpio->status[offset] |= ARIZONA_GP_MAINTAIN;
126
127 return offset;
128 }
129
130 static const struct gpio_chip template_chip = {
131 .label = "arizona",
132 .owner = THIS_MODULE,
133 .direction_input = arizona_gpio_direction_in,
134 .get = arizona_gpio_get,
135 .direction_output = arizona_gpio_direction_out,
136 .set = arizona_gpio_set,
137 .can_sleep = true,
> 138 .of_xlate = arizona_gpio_of_xlate,
> 139 .of_gpio_n_cells = 2,
140 };
141
142 static int arizona_gpio_probe(struct platform_device *pdev)

---
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