Hi Sam, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [cannot apply to v5.3 next-20190917] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Sam-Shih/Add-mt7629-and-fix-mt7628-pwm/20190918-140213 config: sparc64-allmodconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=sparc64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers//pwm/pwm-mediatek.c: In function 'mtk_pwm_config': drivers//pwm/pwm-mediatek.c:123:22: error: 'struct mtk_pwm_chip' has no member named 'clks' struct clk *clk = pc->clks[MTK_CLK_PWM1 + pwm->hwpwm]; ^~ drivers//pwm/pwm-mediatek.c:123:29: error: 'MTK_CLK_PWM1' undeclared (first use in this function) struct clk *clk = pc->clks[MTK_CLK_PWM1 + pwm->hwpwm]; ^~~~~~~~~~~~ drivers//pwm/pwm-mediatek.c:123:29: note: each undeclared identifier is reported only once for each function it appears in drivers//pwm/pwm-mediatek.c: In function 'mtk_pwm_probe': >> drivers//pwm/pwm-mediatek.c:237:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int i; ^~~ vim +237 drivers//pwm/pwm-mediatek.c 118 119 static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, 120 int duty_ns, int period_ns) 121 { 122 struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); > 123 struct clk *clk = pc->clks[MTK_CLK_PWM1 + pwm->hwpwm]; 124 u32 clkdiv = 0, cnt_period, cnt_duty, reg_width = PWMDWIDTH, 125 reg_thres = PWMTHRES; 126 u64 resolution; 127 int ret; 128 129 ret = mtk_pwm_clk_enable(chip, pwm); 130 if (ret < 0) 131 return ret; 132 133 /* Using resolution in picosecond gets accuracy higher */ 134 resolution = (u64)NSEC_PER_SEC * 1000; 135 do_div(resolution, clk_get_rate(clk)); 136 137 cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000, resolution); 138 while (cnt_period > 8191) { 139 resolution *= 2; 140 clkdiv++; 141 cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000, 142 resolution); 143 } 144 145 if (clkdiv > PWM_CLK_DIV_MAX) { 146 mtk_pwm_clk_disable(chip, pwm); 147 dev_err(chip->dev, "period %d not supported\n", period_ns); 148 return -EINVAL; 149 } 150 151 if (pc->soc->pwm45_fixup && pwm->hwpwm > 2) { 152 /* 153 * PWM[4,5] has distinct offset for PWMDWIDTH and PWMTHRES 154 * from the other PWMs on MT7623. 155 */ 156 reg_width = PWM45DWIDTH_FIXUP; 157 reg_thres = PWM45THRES_FIXUP; 158 } 159 160 cnt_duty = DIV_ROUND_CLOSEST_ULL((u64)duty_ns * 1000, resolution); 161 mtk_pwm_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | clkdiv); 162 mtk_pwm_writel(pc, pwm->hwpwm, reg_width, cnt_period); 163 mtk_pwm_writel(pc, pwm->hwpwm, reg_thres, cnt_duty); 164 165 mtk_pwm_clk_disable(chip, pwm); 166 167 return 0; 168 } 169 170 static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) 171 { 172 struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); 173 u32 value; 174 int ret; 175 176 ret = mtk_pwm_clk_enable(chip, pwm); 177 if (ret < 0) 178 return ret; 179 180 value = readl(pc->regs); 181 value |= BIT(pwm->hwpwm); 182 writel(value, pc->regs); 183 184 return 0; 185 } 186 187 static void mtk_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) 188 { 189 struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); 190 u32 value; 191 192 value = readl(pc->regs); 193 value &= ~BIT(pwm->hwpwm); 194 writel(value, pc->regs); 195 196 mtk_pwm_clk_disable(chip, pwm); 197 } 198 199 static const struct pwm_ops mtk_pwm_ops = { 200 .config = mtk_pwm_config, 201 .enable = mtk_pwm_enable, 202 .disable = mtk_pwm_disable, 203 .owner = THIS_MODULE, 204 }; 205 206 static int mtk_pwm_probe(struct platform_device *pdev) 207 { 208 struct device_node *np = pdev->dev.of_node; 209 struct mtk_pwm_chip *pc; 210 struct resource *res; 211 unsigned int npwms; 212 int ret; 213 214 pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL); 215 if (!pc) 216 return -ENOMEM; 217 218 pc->soc = of_device_get_match_data(&pdev->dev); 219 220 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 221 pc->regs = devm_ioremap_resource(&pdev->dev, res); 222 if (IS_ERR(pc->regs)) 223 return PTR_ERR(pc->regs); 224 225 ret = of_property_read_u32(np, "num-pwms", &npwms); 226 if (ret < 0) { 227 /* It's deprecated, we should specify num_pwms via DT now. */ 228 if (pc->soc->fallback_npwms) { 229 npwms = pc->soc->fallback_npwms; 230 dev_warn(&pdev->dev, "DT is outdated, please update it\n"); 231 } else { 232 dev_err(&pdev->dev, "failed to get number of PWMs\n"); 233 return ret; 234 } 235 } 236 > 237 int i; 238 239 pc->clk_pwms = devm_kcalloc(&pdev->dev, npwms, 240 sizeof(*pc->clk_pwms), GFP_KERNEL); 241 if (!pc->clk_pwms) 242 return -ENOMEM; 243 244 pc->clk_top = devm_clk_get(&pdev->dev, "top"); 245 if (IS_ERR(pc->clk_top)) { 246 dev_err(&pdev->dev, "clock: top fail: %ld\n", 247 PTR_ERR(pc->clk_top)); 248 return PTR_ERR(pc->clk_top); 249 } 250 251 pc->clk_main = devm_clk_get(&pdev->dev, "main"); 252 if (IS_ERR(pc->clk_main)) { 253 dev_err(&pdev->dev, "clock: main fail: %ld\n", 254 PTR_ERR(pc->clk_main)); 255 return PTR_ERR(pc->clk_main); 256 } 257 for (i = 0; i < npwms; i++) { 258 char name[8]; 259 260 snprintf(name, sizeof(name), "pwm%d", i + 1); 261 pc->clk_pwms[i] = devm_clk_get(&pdev->dev, name); 262 if (IS_ERR(pc->clk_pwms[i])) { 263 dev_err(&pdev->dev, "clock: %s fail: %ld\n", 264 name, PTR_ERR(pc->clk_pwms[i])); 265 return PTR_ERR(pc->clk_pwms[i]); 266 } 267 } 268 269 platform_set_drvdata(pdev, pc); 270 271 pc->chip.dev = &pdev->dev; 272 pc->chip.ops = &mtk_pwm_ops; 273 pc->chip.base = -1; 274 pc->chip.npwm = npwms; 275 276 ret = pwmchip_add(&pc->chip); 277 if (ret < 0) { 278 dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret); 279 return ret; 280 } 281 282 return 0; 283 } 284 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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