Hi Nishad, Thank you for the patch! Yet something to improve: [auto build test ERROR on staging/staging-testing] [also build test ERROR on v4.19 next-20181102] [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/Nishad-Kamdar/staging-olpc_dcon-olpc_dcon_xo_1-c-Switch-to-the-gpio-descriptor-interface/20181104-041335 config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All error/warnings (new ones prefixed by >>): >> drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:23:2: error: expected identifier before numeric constant DCON_IRQ, ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:34:50: error: 'GPIO_ASIS' undeclared here (not in a function); did you mean 'GPIOD_ASIS'? [DCON_STAT0] = { .name = "dcon_stat0", .flags = GPIO_ASIS }, ^~~~~~~~~ GPIOD_ASIS drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:37:3: error: 'DCON_LOAD' undeclared here (not in a function); did you mean 'DCON_STAT1'? [DCON_LOAD] = { .name = "dcon_load", .flags = GPIO_ASIS }, ^~~~~~~~~ DCON_STAT1 drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:37:3: error: array index in initializer not of integer type drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:37:3: note: (near initialization for 'gpios_asis') drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:38:3: error: 'DCON_BLANK' undeclared here (not in a function); did you mean 'DCON_LOAD'? [DCON_BLANK] = { .name = "dcon_blank", .flag = GPIO_ASIS }, ^~~~~~~~~~ DCON_LOAD drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:38:3: error: array index in initializer not of integer type drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:38:3: note: (near initialization for 'gpios_asis') drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:38:42: error: 'const struct dcon_gpio' has no member named 'flag'; did you mean 'flags'? [DCON_BLANK] = { .name = "dcon_blank", .flag = GPIO_ASIS }, ^~~~ flags drivers/staging//olpc_dcon/olpc_dcon_xo_1.c: In function 'dcon_init_xo_1': drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:47:26: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] struct dcon_gpio *pin = &gpios_asis[0]; ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:42: error: dereferencing pointer to incomplete type 'struct i2c_client' gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, ^~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:42: error: request for member 'dev' in something not a structure or union drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:55: error: invalid type argument of '->' (have 'struct dcon_gpio') gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, ^~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:55: error: request for member 'name' in something not a structure or union drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:51:14: error: invalid type argument of '->' (have 'struct dcon_gpio') pin[i]->flags); ^~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:51:14: error: request for member 'flags' in something not a structure or union drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:29: error: passing argument 1 of 'devm_gpiod_get' from incompatible pointer type [-Werror=incompatible-pointer-types] gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, ^ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:87:55: note: expected 'struct device *' but argument is of type 'const struct dcon_gpio (*)[1]' struct gpio_desc *__must_check devm_gpiod_get(struct device *dev, ^~~~~~~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:49: error: passing argument 2 of 'devm_gpiod_get' from incompatible pointer type [-Werror=incompatible-pointer-types] gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, ^~~ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:87:55: note: expected 'const char *' but argument is of type 'const struct dcon_gpio *' struct gpio_desc *__must_check devm_gpiod_get(struct device *dev, ^~~~~~~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:51:8: error: incompatible type for argument 3 of 'devm_gpiod_get' pin[i]->flags); ^~~ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:87:55: note: expected 'enum gpiod_flags' but argument is of type 'const struct dcon_gpio *' struct gpio_desc *__must_check devm_gpiod_get(struct device *dev, ^~~~~~~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:50:12: error: assignment from incompatible pointer type [-Werror=incompatible-pointer-types] gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:54:80: error: invalid type argument of '->' (have 'struct dcon_gpio') pr_err("failed to request %s GPIO: %d\n", pin[i]->name, ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:54:80: error: request for member 'name' in something not a structure or union >> drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:54:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'const struct dcon_gpio *' [-Wformat=] pr_err("failed to request %s GPIO: %d\n", pin[i]->name, ^~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:82:29: error: array subscript is not an integer gpiod_direction_input(gpios[DCON_BLANK]); ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:82:24: error: passing argument 1 of 'gpiod_direction_input' from incompatible pointer type [-Werror=incompatible-pointer-types] gpiod_direction_input(gpios[DCON_BLANK]); ^~~~~ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:110:5: note: expected 'struct gpio_desc *' but argument is of type 'const struct dcon_gpio *' int gpiod_direction_input(struct gpio_desc *desc); ^~~~~~~~~~~~~~~~~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:83:30: error: array subscript is not an integer gpiod_direction_output(gpios[DCON_LOAD], ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:83:25: error: passing argument 1 of 'gpiod_direction_output' from incompatible pointer type [-Werror=incompatible-pointer-types] gpiod_direction_output(gpios[DCON_LOAD], ^~~~~ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:111:5: note: expected 'struct gpio_desc *' but argument is of type 'const struct dcon_gpio *' int gpiod_direction_output(struct gpio_desc *desc, int value); ^~~~~~~~~~~~~~~~~~~~~~ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c: In function 'dcon_set_dconload_1': drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:186:23: error: array subscript is not an integer gpiod_set_value(gpios[DCON_LOAD], val); ^ drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:186:18: error: passing argument 1 of 'gpiod_set_value' from incompatible pointer type [-Werror=incompatible-pointer-types] gpiod_set_value(gpios[DCON_LOAD], val); ^~~~~ In file included from drivers/staging//olpc_dcon/olpc_dcon_xo_1.c:14:0: include/linux/gpio/consumer.h:120:6: note: expected 'struct gpio_desc *' but argument is of type 'const struct dcon_gpio *' void gpiod_set_value(struct gpio_desc *desc, int value); ^~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +54 drivers/staging//olpc_dcon/olpc_dcon_xo_1.c 19 20 enum dcon_gpios { 21 DCON_STAT0, 22 DCON_STAT1, > 23 DCON_IRQ, 24 DCON_LOAD, 25 DCON_BLANK, 26 }; 27 28 struct dcon_gpio { 29 const char *name; 30 unsigned long flags; 31 }; 32 33 static const struct dcon_gpio gpios_asis[] = { 34 [DCON_STAT0] = { .name = "dcon_stat0", .flags = GPIO_ASIS }, 35 [DCON_STAT1] = { .name = "dcon_stat1", .flags = GPIO_ASIS }, 36 [DCON_IRQ] = { .name = "dcon_irq", .flags = GPIO_ASIS }, 37 [DCON_LOAD] = { .name = "dcon_load", .flags = GPIO_ASIS }, 38 [DCON_BLANK] = { .name = "dcon_blank", .flag = GPIO_ASIS }, 39 }; 40 41 struct gpio_desc *gpios[5]; 42 43 static int dcon_init_xo_1(struct dcon_priv *dcon) 44 { 45 unsigned char lob; 46 int ret, i; 47 struct dcon_gpio *pin = &gpios_asis[0]; 48 49 for (i = 0; i < ARRAY_SIZE(gpios_asis); i++) { > 50 gpios[i] = devm_gpiod_get(&dcon->client->dev, pin[i]->name, 51 pin[i]->flags); 52 if (IS_ERR(gpios[i])) { 53 ret = PTR_ERR(gpios[i]); > 54 pr_err("failed to request %s GPIO: %d\n", pin[i]->name, 55 ret); 56 return ret; 57 } 58 } 59 60 /* Turn off the event enable for GPIO7 just to be safe */ 61 cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_EVENTS_ENABLE); 62 63 /* 64 * Determine the current state by reading the GPIO bit; earlier 65 * stages of the boot process have established the state. 66 * 67 * Note that we read GPIO_OUTPUT_VAL rather than GPIO_READ_BACK here; 68 * this is because OFW will disable input for the pin and set a value.. 69 * READ_BACK will only contain a valid value if input is enabled and 70 * then a value is set. So, future readings of the pin can use 71 * READ_BACK, but the first one cannot. Awesome, huh? 72 */ 73 dcon->curr_src = cs5535_gpio_isset(OLPC_GPIO_DCON_LOAD, GPIO_OUTPUT_VAL) 74 ? DCON_SOURCE_CPU 75 : DCON_SOURCE_DCON; 76 dcon->pending_src = dcon->curr_src; 77 78 /* Set the directions for the GPIO pins */ 79 gpiod_direction_input(gpios[DCON_STAT0]); 80 gpiod_direction_input(gpios[DCON_STAT1]); 81 gpiod_direction_input(gpios[DCON_IRQ]); 82 gpiod_direction_input(gpios[DCON_BLANK]); 83 gpiod_direction_output(gpios[DCON_LOAD], 84 dcon->curr_src == DCON_SOURCE_CPU); 85 86 /* Set up the interrupt mappings */ 87 88 /* Set the IRQ to pair 2 */ 89 cs5535_gpio_setup_event(OLPC_GPIO_DCON_IRQ, 2, 0); 90 91 /* Enable group 2 to trigger the DCON interrupt */ 92 cs5535_gpio_set_irq(2, DCON_IRQ); 93 94 /* Select edge level for interrupt (in PIC) */ 95 lob = inb(0x4d0); 96 lob &= ~(1 << DCON_IRQ); 97 outb(lob, 0x4d0); 98 99 /* Register the interrupt handler */ 100 if (request_irq(DCON_IRQ, &dcon_interrupt, 0, "DCON", dcon)) { 101 pr_err("failed to request DCON's irq\n"); 102 return -EIO; 103 } 104 105 /* Clear INV_EN for GPIO7 (DCONIRQ) */ 106 cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_INVERT); 107 108 /* Enable filter for GPIO12 (DCONBLANK) */ 109 cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_INPUT_FILTER); 110 111 /* Disable filter for GPIO7 */ 112 cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_FILTER); 113 114 /* Disable event counter for GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */ 115 cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_EVENT_COUNT); 116 cs5535_gpio_clear(OLPC_GPIO_DCON_BLANK, GPIO_INPUT_EVENT_COUNT); 117 118 /* Add GPIO12 to the Filter Event Pair #7 */ 119 cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_FE7_SEL); 120 121 /* Turn off negative Edge Enable for GPIO12 */ 122 cs5535_gpio_clear(OLPC_GPIO_DCON_BLANK, GPIO_NEGATIVE_EDGE_EN); 123 124 /* Enable negative Edge Enable for GPIO7 */ 125 cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_NEGATIVE_EDGE_EN); 126 127 /* Zero the filter amount for Filter Event Pair #7 */ 128 cs5535_gpio_set(0, GPIO_FLTR7_AMOUNT); 129 130 /* Clear the negative edge status for GPIO7 and GPIO12 */ 131 cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_NEGATIVE_EDGE_STS); 132 cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_NEGATIVE_EDGE_STS); 133 134 /* FIXME: Clear the positive status as well, just to be sure */ 135 cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_POSITIVE_EDGE_STS); 136 cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_POSITIVE_EDGE_STS); 137 138 /* Enable events for GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */ 139 cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_EVENTS_ENABLE); 140 cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_EVENTS_ENABLE); 141 142 return 0; 143 } 144 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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