tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: 3f1962fdc723cb48f0ea4e8a733d3ffa88708e98 commit: a3f54564061da0c8c0b60033ff44acfa356b8779 [14/19] staging: olpc_dcon: allow simultaneous XO-1 and XO-1.5 support config: i386-randconfig-g002-201938 (attached as .config) compiler: gcc-7 (Debian 7.4.0-13) 7.4.0 reproduce: git checkout a3f54564061da0c8c0b60033ff44acfa356b8779 # save the attached .config to linux build tree make ARCH=i386
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>
All errors (new ones prefixed by >>):
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.o: in function
`dcon_read_status_xo_1':
>> drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:191: undefined reference to
>> `cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.o: in function
`dcon_wiggle_xo_1':
drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:156: undefined reference to
`cs5535_gpio_set'
>> ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:157: undefined reference to
>> `cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:158: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:159: undefined reference to
`cs5535_gpio_set'
>> ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:160: undefined reference to
>> `cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:161: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:162: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:163: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:164: undefined reference to
`cs5535_gpio_clear'
ld:
drivers/staging/olpc_dcon/olpc_dcon_xo_1.o:drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:165:
more undefined references to `cs5535_gpio_clear' follow
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.o: in function
`dcon_wiggle_xo_1':
drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:171: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:174: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:175: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:176: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:177: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.o: in function `dcon_init_xo_1':
>> drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:57: undefined reference to
>> `cs5535_gpio_clear'
>> ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:69: undefined reference to
>> `cs5535_gpio_isset'
>> ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:85: undefined reference to
>> `cs5535_gpio_setup_event'
>> ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:88: undefined reference to
>> `cs5535_gpio_set_irq'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:102: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:105: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:108: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:111: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:112: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:115: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:118: undefined reference to
`cs5535_gpio_clear'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:121: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:124: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:127: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:128: undefined reference to
`cs5535_gpio_set'
ld: drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:131: undefined reference to
`cs5535_gpio_set'
ld:
drivers/staging/olpc_dcon/olpc_dcon_xo_1.o:drivers/staging/olpc_dcon/olpc_dcon_xo_1.c:132:
more undefined references to `cs5535_gpio_set' follow
vim +191 drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
2159fb3729293c Nishad Kamdar 2018-11-07 38
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 39 static int
dcon_init_xo_1(struct dcon_priv *dcon)
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 40 {
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 41 unsigned char lob;
2159fb3729293c Nishad Kamdar 2018-11-07 42 int ret, i;
ae0a6d2017f733 Arnd Bergmann 2019-03-04 43 const struct dcon_gpio
*pin = &gpios_asis[0];
2159fb3729293c Nishad Kamdar 2018-11-07 44
2159fb3729293c Nishad Kamdar 2018-11-07 45 for (i = 0; i <
ARRAY_SIZE(gpios_asis); i++) {
2159fb3729293c Nishad Kamdar 2018-11-07 46 gpios[i] =
devm_gpiod_get(&dcon->client->dev, pin[i].name,
2159fb3729293c Nishad Kamdar 2018-11-07 47
pin[i].flags);
2159fb3729293c Nishad Kamdar 2018-11-07 48 if
(IS_ERR(gpios[i])) {
2159fb3729293c Nishad Kamdar 2018-11-07 49 ret =
PTR_ERR(gpios[i]);
2159fb3729293c Nishad Kamdar 2018-11-07 50
pr_err("failed to request %s GPIO: %d\n", pin[i].name,
2159fb3729293c Nishad Kamdar 2018-11-07 51
ret);
2159fb3729293c Nishad Kamdar 2018-11-07 52 return
ret;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 53 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 54 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 55
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 56 /* Turn off the event
enable for GPIO7 just to be safe */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @57
cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_EVENTS_ENABLE);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 58
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 59 /*
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 60 * Determine the
current state by reading the GPIO bit; earlier
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 61 * stages of the boot
process have established the state.
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 62 *
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 63 * Note that we read
GPIO_OUTPUT_VAL rather than GPIO_READ_BACK here;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 64 * this is because OFW
will disable input for the pin and set a value..
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 65 * READ_BACK will only
contain a valid value if input is enabled and
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 66 * then a value is set.
So, future readings of the pin can use
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 67 * READ_BACK, but the
first one cannot. Awesome, huh?
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 68 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @69 dcon->curr_src =
cs5535_gpio_isset(OLPC_GPIO_DCON_LOAD, GPIO_OUTPUT_VAL)
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 70 ?
DCON_SOURCE_CPU
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 71 :
DCON_SOURCE_DCON;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 72 dcon->pending_src =
dcon->curr_src;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 73
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 74 /* Set the directions
for the GPIO pins */
2159fb3729293c Nishad Kamdar 2018-11-07 75
gpiod_direction_input(gpios[OLPC_DCON_STAT0]);
2159fb3729293c Nishad Kamdar 2018-11-07 76
gpiod_direction_input(gpios[OLPC_DCON_STAT1]);
2159fb3729293c Nishad Kamdar 2018-11-07 77
gpiod_direction_input(gpios[OLPC_DCON_IRQ]);
2159fb3729293c Nishad Kamdar 2018-11-07 78
gpiod_direction_input(gpios[OLPC_DCON_BLANK]);
2159fb3729293c Nishad Kamdar 2018-11-07 79
gpiod_direction_output(gpios[OLPC_DCON_LOAD],
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 80
dcon->curr_src == DCON_SOURCE_CPU);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 81
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 82 /* Set up the interrupt
mappings */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 83
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 84 /* Set the IRQ to pair
2 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @85
cs5535_gpio_setup_event(OLPC_GPIO_DCON_IRQ, 2, 0);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 86
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 87 /* Enable group 2 to
trigger the DCON interrupt */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @88 cs5535_gpio_set_irq(2,
DCON_IRQ);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 89
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 90 /* Select edge level
for interrupt (in PIC) */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 91 lob = inb(0x4d0);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 92 lob &= ~(1 << DCON_IRQ);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 93 outb(lob, 0x4d0);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 94
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 95 /* Register the
interrupt handler */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 96 if
(request_irq(DCON_IRQ, &dcon_interrupt, 0, "DCON", dcon)) {
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 97 pr_err("failed
to request DCON's irq\n");
2159fb3729293c Nishad Kamdar 2018-11-07 98 return -EIO;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 99 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 100
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 101 /* Clear INV_EN for
GPIO7 (DCONIRQ) */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 102
cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_INVERT);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 103
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 104 /* Enable filter for
GPIO12 (DCONBLANK) */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 105
cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_INPUT_FILTER);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 106
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 107 /* Disable filter for
GPIO7 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 108
cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_FILTER);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 109
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 110 /* Disable event
counter for GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 111
cs5535_gpio_clear(OLPC_GPIO_DCON_IRQ, GPIO_INPUT_EVENT_COUNT);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 112
cs5535_gpio_clear(OLPC_GPIO_DCON_BLANK, GPIO_INPUT_EVENT_COUNT);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 113
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 114 /* Add GPIO12 to the
Filter Event Pair #7 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 115
cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_FE7_SEL);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 116
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 117 /* Turn off negative
Edge Enable for GPIO12 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 118
cs5535_gpio_clear(OLPC_GPIO_DCON_BLANK, GPIO_NEGATIVE_EDGE_EN);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 119
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 120 /* Enable negative Edge
Enable for GPIO7 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 121
cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_NEGATIVE_EDGE_EN);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 122
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 123 /* Zero the filter
amount for Filter Event Pair #7 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 124 cs5535_gpio_set(0,
GPIO_FLTR7_AMOUNT);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 125
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 126 /* Clear the negative
edge status for GPIO7 and GPIO12 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 127
cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_NEGATIVE_EDGE_STS);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 128
cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_NEGATIVE_EDGE_STS);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 129
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 130 /* FIXME: Clear the
positive status as well, just to be sure */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 131
cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_POSITIVE_EDGE_STS);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 132
cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_POSITIVE_EDGE_STS);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 133
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 134 /* Enable events for
GPIO7 (DCONIRQ) and GPIO12 (DCONBLANK) */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 135
cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_EVENTS_ENABLE);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 136
cs5535_gpio_set(OLPC_GPIO_DCON_BLANK, GPIO_EVENTS_ENABLE);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 137
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 138 return 0;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 139 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 140
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 141 static void
dcon_wiggle_xo_1(void)
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 142 {
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 143 int x;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 144
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 145 /*
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 146 * According to HiMax,
when powering the DCON up we should hold
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 147 * SMB_DATA high for 8
SMB_CLK cycles. This will force the DCON
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 148 * state machine to
reset to a (sane) initial state. Mitch Bradley
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 149 * did some testing and
discovered that holding for 16 SMB_CLK cycles
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 150 * worked a lot more
reliably, so that's what we do here.
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 151 *
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 152 * According to the
cs5536 spec, to set GPIO14 to SMB_CLK we must
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 153 * simultaneously set
AUX1 IN/OUT to GPIO14; ditto for SMB_DATA and
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 154 * GPIO15.
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 155 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 156
cs5535_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_VAL);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @157
cs5535_gpio_set(OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_VAL);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 158
cs5535_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_ENABLE);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 159
cs5535_gpio_set(OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_ENABLE);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @160
cs5535_gpio_clear(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 161
cs5535_gpio_clear(OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 162
cs5535_gpio_clear(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_AUX2);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 163
cs5535_gpio_clear(OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX2);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @164
cs5535_gpio_clear(OLPC_GPIO_SMB_CLK, GPIO_INPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @165
cs5535_gpio_clear(OLPC_GPIO_SMB_DATA, GPIO_INPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 166
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 167 for (x = 0; x < 16;
x++) {
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 168 udelay(5);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 169
cs5535_gpio_clear(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_VAL);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 170 udelay(5);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @171
cs5535_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_VAL);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 172 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 173 udelay(5);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 174
cs5535_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_OUTPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 175
cs5535_gpio_set(OLPC_GPIO_SMB_DATA, GPIO_OUTPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 176
cs5535_gpio_set(OLPC_GPIO_SMB_CLK, GPIO_INPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 177
cs5535_gpio_set(OLPC_GPIO_SMB_DATA, GPIO_INPUT_AUX1);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 178 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 179
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 180 static void
dcon_set_dconload_1(int val)
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 181 {
2159fb3729293c Nishad Kamdar 2018-11-07 182
gpiod_set_value(gpios[OLPC_DCON_LOAD], val);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 183 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 184
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 185 static int
dcon_read_status_xo_1(u8 *status)
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 186 {
2159fb3729293c Nishad Kamdar 2018-11-07 187 *status =
gpiod_get_value(gpios[OLPC_DCON_STAT0]);
2159fb3729293c Nishad Kamdar 2018-11-07 188 *status |=
gpiod_get_value(gpios[OLPC_DCON_STAT1]) << 1;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 189
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 190 /* Clear the negative
edge status for GPIO7 */
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 @191
cs5535_gpio_set(OLPC_GPIO_DCON_IRQ, GPIO_NEGATIVE_EDGE_STS);
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 192
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 193 return 0;
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 194 }
53c43c5ca13328 Greg Kroah-Hartman 2016-04-04 195
:::::: The code at line 191 was first introduced by commit
:::::: 53c43c5ca13328ac8f415aa2251791b441a12b51 Revert "Staging: olpc_dcon:
Remove obsolete driver"
:::::: TO: Greg Kroah-Hartman <gre...@linuxfoundation.org>
:::::: CC: Greg Kroah-Hartman <gre...@linuxfoundation.org>
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