[PATCH v2 2/2] iio: Aspeed AST2400/AST2500 ADC
kbuild test robot
lkp at intel.com
Thu Mar 23 13:42:19 AEDT 2017
Hi Rick,
[auto build test ERROR on iio/togreg]
[also build test ERROR on v4.11-rc3 next-20170322]
[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/Rick-Altherr/Documentation-dt-bindings-Document-bindings-for-Aspeed-AST2400-AST2500-ADC/20170323-093517
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=ia64
All error/warnings (new ones prefixed by >>):
drivers/iio/adc/aspeed_adc.c: In function 'aspeed_adc_read_raw':
>> drivers/iio/adc/aspeed_adc.c:100:39: error: dereferencing pointer to incomplete type 'struct clk_hw'
*val = clk_get_rate(data->clk_scaler->clk) /
^~
drivers/iio/adc/aspeed_adc.c: In function 'aspeed_adc_probe':
>> drivers/iio/adc/aspeed_adc.c:177:20: error: implicit declaration of function 'of_clk_get_parent_name' [-Werror=implicit-function-declaration]
clk_parent_name = of_clk_get_parent_name(pdev->dev.of_node, 0);
^~~~~~~~~~~~~~~~~~~~~~
>> drivers/iio/adc/aspeed_adc.c:177:18: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
clk_parent_name = of_clk_get_parent_name(pdev->dev.of_node, 0);
^
>> drivers/iio/adc/aspeed_adc.c:179:24: error: implicit declaration of function 'clk_hw_register_divider' [-Werror=implicit-function-declaration]
data->clk_prescaler = clk_hw_register_divider(
^~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/adc/aspeed_adc.c:179:22: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
data->clk_prescaler = clk_hw_register_divider(
^
>> drivers/iio/adc/aspeed_adc.c:195:5: error: 'CLK_SET_RATE_PARENT' undeclared (first use in this function)
CLK_SET_RATE_PARENT,
^~~~~~~~~~~~~~~~~~~
drivers/iio/adc/aspeed_adc.c:195:5: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/iio/adc/aspeed_adc.c:229:2: error: implicit declaration of function 'clk_hw_unregister_divider' [-Werror=implicit-function-declaration]
clk_hw_unregister_divider(data->clk_scaler);
^~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +100 drivers/iio/adc/aspeed_adc.c
94 case IIO_CHAN_INFO_SCALE:
95 *val = 2500; // mV
96 *val2 = 10;
97 return IIO_VAL_FRACTIONAL_LOG2;
98
99 case IIO_CHAN_INFO_SAMP_FREQ:
> 100 *val = clk_get_rate(data->clk_scaler->clk) /
101 ASPEED_ADC_CLOCKS_PER_SAMPLE;
102 return IIO_VAL_INT;
103
104 default:
105 return -EINVAL;
106 }
107 }
108
109 static int aspeed_adc_write_raw(struct iio_dev *indio_dev,
110 struct iio_chan_spec const *chan,
111 int val, int val2, long mask)
112 {
113 struct aspeed_adc_data *data = iio_priv(indio_dev);
114
115 switch (mask) {
116 case IIO_CHAN_INFO_SAMP_FREQ:
117 if (val < ASPEED_ADC_MIN_SAMP_RATE ||
118 val > ASPEED_ADC_MAX_SAMP_RATE)
119 return -EINVAL;
120
121 clk_set_rate(data->clk_scaler->clk,
122 val * ASPEED_ADC_CLOCKS_PER_SAMPLE);
123 return 0;
124
125 default:
126 return -EINVAL;
127 }
128 }
129
130 static int aspeed_adc_reg_access(struct iio_dev *indio_dev,
131 unsigned int reg, unsigned int writeval,
132 unsigned int *readval)
133 {
134 struct aspeed_adc_data *data = iio_priv(indio_dev);
135
136 if (!readval || reg % 4 || reg > ASPEED_ADC_REG_MAX)
137 return -EINVAL;
138
139 *readval = readl(data->base + reg);
140 return 0;
141 }
142
143 static const struct iio_info aspeed_adc_iio_info = {
144 .driver_module = THIS_MODULE,
145 .read_raw = &aspeed_adc_read_raw,
146 .write_raw = &aspeed_adc_write_raw,
147 .debugfs_reg_access = &aspeed_adc_reg_access,
148 };
149
150 static int aspeed_adc_probe(struct platform_device *pdev)
151 {
152 struct iio_dev *indio_dev;
153 struct aspeed_adc_data *data;
154 struct resource *res;
155 const char *clk_parent_name;
156 int ret;
157 u32 adc_engine_control_reg_val;
158
159 indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*data));
160 if (!indio_dev) {
161 dev_err(&pdev->dev, "Failed allocating iio device\n");
162 return -ENOMEM;
163 }
164
165 data = iio_priv(indio_dev);
166
167 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
168 data->base = devm_ioremap_resource(&pdev->dev, res);
169 if (IS_ERR(data->base)) {
170 dev_err(&pdev->dev, "Failed allocating device resources\n");
171 ret = PTR_ERR(data->base);
172 goto resource_error;
173 }
174
175 /* Register ADC clock prescaler with source specified by device tree. */
176 spin_lock_init(&data->clk_lock);
> 177 clk_parent_name = of_clk_get_parent_name(pdev->dev.of_node, 0);
178
> 179 data->clk_prescaler = clk_hw_register_divider(
180 &pdev->dev, "prescaler", clk_parent_name, 0,
181 data->base + ASPEED_ADC_REG_CLOCK_CONTROL,
182 17, 15, 0, &data->clk_lock);
183 if (IS_ERR(data->clk_prescaler)) {
184 dev_err(&pdev->dev, "Failed allocating prescaler clock\n");
185 ret = PTR_ERR(data->clk_prescaler);
186 goto prescaler_error;
187 }
188
189 /*
190 * Register ADC clock scaler downstream from the prescaler. Allow rate
191 * setting to adjust the prescaler as well.
192 */
193 data->clk_scaler = clk_hw_register_divider(
194 &pdev->dev, "scaler", "prescaler",
> 195 CLK_SET_RATE_PARENT,
196 data->base + ASPEED_ADC_REG_CLOCK_CONTROL,
197 0, 10, 0, &data->clk_lock);
198 if (IS_ERR(data->clk_scaler)) {
199 dev_err(&pdev->dev, "Failed allocating scaler clock\n");
200 ret = PTR_ERR(data->clk_scaler);
201 goto scaler_error;
202 }
203
204 /* Start all channels in normal mode. */
205 clk_prepare_enable(data->clk_scaler->clk);
206 adc_engine_control_reg_val = GENMASK(31, 16) |
207 ASPEED_ADC_OPERATION_MODE_NORMAL | ASPEED_ADC_ENGINE_ENABLE;
208 writel(adc_engine_control_reg_val,
209 data->base + ASPEED_ADC_REG_ENGINE_CONTROL);
210
211 indio_dev->name = dev_name(&pdev->dev);
212 indio_dev->dev.parent = &pdev->dev;
213 indio_dev->info = &aspeed_adc_iio_info;
214 indio_dev->modes = INDIO_DIRECT_MODE;
215 indio_dev->channels = aspeed_adc_iio_channels;
216 indio_dev->num_channels = ARRAY_SIZE(aspeed_adc_iio_channels);
217
218 ret = iio_device_register(indio_dev);
219 if (ret) {
220 dev_err(&pdev->dev, "Could't register the device.\n");
221 goto iio_register_error;
222 }
223
224 return 0;
225
226 iio_register_error:
227 writel(0x0, data->base + ASPEED_ADC_REG_ENGINE_CONTROL);
228 clk_disable_unprepare(data->clk_scaler->clk);
> 229 clk_hw_unregister_divider(data->clk_scaler);
230
231 scaler_error:
232 clk_hw_unregister_divider(data->clk_prescaler);
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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