153 static void wait_busy(struct ocotp_regs *regs, unsigned int delay_us)  in wait_busy()  argument
155 	while (readl(&regs->ctrl) & BM_CTRL_BUSY)  in wait_busy()
159 static void clear_error(struct ocotp_regs *regs)  in clear_error()  argument
161 	writel(BM_CTRL_ERROR, &regs->ctrl_clr);  in clear_error()
164 static int prepare_access(struct ocotp_regs **regs, u32 bank, u32 word,  in prepare_access()  argument
167 	*regs = (struct ocotp_regs *)OCOTP_BASE_ADDR;  in prepare_access()
170 	    word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 ||  in prepare_access()
178 		    word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 3) {  in prepare_access()
186 	wait_busy(*regs, 1);  in prepare_access()
187 	clear_error(*regs);  in prepare_access()
192 static int finish_access(struct ocotp_regs *regs, const char *caller)  in finish_access()  argument
196 	err = !!(readl(&regs->ctrl) & BM_CTRL_ERROR);  in finish_access()
197 	clear_error(regs);  in finish_access()
201 	writel(1, &regs->pdn);  in finish_access()
211 static int prepare_read(struct ocotp_regs **regs, u32 bank, u32 word, u32 *val,  in prepare_read()  argument
214 	return prepare_access(regs, bank, word, val != NULL, caller);  in prepare_read()
219 	struct ocotp_regs *regs;  in fuse_read()  local
224 	ret = prepare_read(&regs, bank, word, val, __func__);  in fuse_read()
231 	*val = readl(&regs->bank[phy_bank].fuse_regs[phy_word << 2]);  in fuse_read()
234 	if (readl(&regs->out_status) & BM_OUT_STATUS_DED) {  in fuse_read()
235 		writel(BM_OUT_STATUS_DED, &regs->out_status_clr);  in fuse_read()
240 	return finish_access(regs, __func__);  in fuse_read()
244 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
258 	clrsetbits_le32(&regs->timing, BM_TIMING_FSOURCE | BM_TIMING_PROG,  in set_timing()
262 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
268 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
286 	clrsetbits_le32(&regs->timing, BM_TIMING_STROBE_READ | BM_TIMING_RELAX |  in set_timing()
291 static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word,  in setup_direct_access()  argument
307 	set_timing(regs);  in setup_direct_access()
308 	clrsetbits_le32(&regs->ctrl, BM_CTRL_WR_UNLOCK | BM_CTRL_ADDR,  in setup_direct_access()
315 	struct ocotp_regs *regs;  in fuse_sense()  local
318 	ret = prepare_read(&regs, bank, word, val, __func__);  in fuse_sense()
322 	setup_direct_access(regs, bank, word, false);  in fuse_sense()
323 	writel(BM_READ_CTRL_READ_FUSE, &regs->read_ctrl);  in fuse_sense()
324 	wait_busy(regs, 1);  in fuse_sense()
326 	*val = readl((&regs->read_fuse_data0) + (word << 2));  in fuse_sense()
328 	*val = readl(&regs->read_fuse_data);  in fuse_sense()
332 	if (readl(&regs->out_status) & BM_OUT_STATUS_DED) {  in fuse_sense()
333 		writel(BM_OUT_STATUS_DED, &regs->out_status_clr);  in fuse_sense()
339 	return finish_access(regs, __func__);  in fuse_sense()
342 static int prepare_write(struct ocotp_regs **regs, u32 bank, u32 word,  in prepare_write()  argument
345 	return prepare_access(regs, bank, word, true, caller);  in prepare_write()
350 	struct ocotp_regs *regs;  in fuse_prog()  local
353 	ret = prepare_write(&regs, bank, word, __func__);  in fuse_prog()
357 	setup_direct_access(regs, bank, word, true);  in fuse_prog()
361 		writel(0, &regs->data1);  in fuse_prog()
362 		writel(0, &regs->data2);  in fuse_prog()
363 		writel(0, &regs->data3);  in fuse_prog()
364 		writel(val, &regs->data0);  in fuse_prog()
367 		writel(val, &regs->data1);  in fuse_prog()
368 		writel(0, &regs->data2);  in fuse_prog()
369 		writel(0, &regs->data3);  in fuse_prog()
370 		writel(0, &regs->data0);  in fuse_prog()
373 		writel(0, &regs->data1);  in fuse_prog()
374 		writel(val, &regs->data2);  in fuse_prog()
375 		writel(0, &regs->data3);  in fuse_prog()
376 		writel(0, &regs->data0);  in fuse_prog()
379 		writel(0, &regs->data1);  in fuse_prog()
380 		writel(0, &regs->data2);  in fuse_prog()
381 		writel(val, &regs->data3);  in fuse_prog()
382 		writel(0, &regs->data0);  in fuse_prog()
385 	wait_busy(regs, BV_TIMING_PROG_US);  in fuse_prog()
387 	writel(val, &regs->data);  in fuse_prog()
388 	wait_busy(regs, BV_TIMING_STROBE_PROG_US);  in fuse_prog()
393 	if (readl(&regs->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {  in fuse_prog()
394 		writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), &regs->out_status_clr);  in fuse_prog()
400 	return finish_access(regs, __func__);  in fuse_prog()
405 	struct ocotp_regs *regs;  in fuse_override()  local
410 	ret = prepare_write(&regs, bank, word, __func__);  in fuse_override()
417 	writel(val, &regs->bank[phy_bank].fuse_regs[phy_word << 2]);  in fuse_override()
420 	if (readl(&regs->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {  in fuse_override()
421 		writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), &regs->out_status_clr);  in fuse_override()
427 	return finish_access(regs, __func__);  in fuse_override()