157 static void wait_busy(struct ocotp_regs *regs, unsigned int delay_us)  in wait_busy()  argument
159 	while (readl(&regs->ctrl) & BM_CTRL_BUSY)  in wait_busy()
163 static void clear_error(struct ocotp_regs *regs)  in clear_error()  argument
165 	writel(BM_CTRL_ERROR, &regs->ctrl_clr);  in clear_error()
168 static int prepare_access(struct ocotp_regs **regs, u32 bank, u32 word,  in prepare_access()  argument
171 	*regs = (struct ocotp_regs *)OCOTP_BASE_ADDR;  in prepare_access()
174 	    word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 ||  in prepare_access()
182 		    word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 3) {  in prepare_access()
190 	wait_busy(*regs, 1);  in prepare_access()
191 	clear_error(*regs);  in prepare_access()
196 static int finish_access(struct ocotp_regs *regs, const char *caller)  in finish_access()  argument
200 	err = !!(readl(&regs->ctrl) & BM_CTRL_ERROR);  in finish_access()
201 	clear_error(regs);  in finish_access()
205 	writel(1, &regs->pdn);  in finish_access()
215 static int prepare_read(struct ocotp_regs **regs, u32 bank, u32 word, u32 *val,  in prepare_read()  argument
218 	return prepare_access(regs, bank, word, val != NULL, caller);  in prepare_read()
223 	struct ocotp_regs *regs;  in fuse_read()  local
228 	ret = prepare_read(&regs, bank, word, val, __func__);  in fuse_read()
235 	*val = readl(&regs->bank[phy_bank].fuse_regs[phy_word << 2]);  in fuse_read()
238 	if (readl(&regs->out_status) & BM_OUT_STATUS_DED) {  in fuse_read()
239 		writel(BM_OUT_STATUS_DED, &regs->out_status_clr);  in fuse_read()
244 	return finish_access(regs, __func__);  in fuse_read()
248 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
262 	clrsetbits_le32(&regs->timing, BM_TIMING_FSOURCE | BM_TIMING_PROG,  in set_timing()
266 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
272 static void set_timing(struct ocotp_regs *regs)  in set_timing()  argument
290 	clrsetbits_le32(&regs->timing, BM_TIMING_STROBE_READ | BM_TIMING_RELAX |  in set_timing()
295 static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word,  in setup_direct_access()  argument
313 	set_timing(regs);  in setup_direct_access()
314 	clrsetbits_le32(&regs->ctrl, BM_CTRL_WR_UNLOCK | BM_CTRL_ADDR,  in setup_direct_access()
321 	struct ocotp_regs *regs;  in fuse_sense()  local
324 	ret = prepare_read(&regs, bank, word, val, __func__);  in fuse_sense()
328 	setup_direct_access(regs, bank, word, false);  in fuse_sense()
329 	writel(BM_READ_CTRL_READ_FUSE, &regs->read_ctrl);  in fuse_sense()
330 	wait_busy(regs, 1);  in fuse_sense()
332 	*val = readl((&regs->read_fuse_data0) + (word << 2));  in fuse_sense()
334 	*val = readl(&regs->read_fuse_data);  in fuse_sense()
338 	if (readl(&regs->out_status) & BM_OUT_STATUS_DED) {  in fuse_sense()
339 		writel(BM_OUT_STATUS_DED, &regs->out_status_clr);  in fuse_sense()
345 	return finish_access(regs, __func__);  in fuse_sense()
348 static int prepare_write(struct ocotp_regs **regs, u32 bank, u32 word,  in prepare_write()  argument
368 	return prepare_access(regs, bank, word, true, caller);  in prepare_write()
373 	struct ocotp_regs *regs;  in fuse_prog()  local
376 	ret = prepare_write(&regs, bank, word, __func__);  in fuse_prog()
380 	setup_direct_access(regs, bank, word, true);  in fuse_prog()
384 		writel(0, &regs->data1);  in fuse_prog()
385 		writel(0, &regs->data2);  in fuse_prog()
386 		writel(0, &regs->data3);  in fuse_prog()
387 		writel(val, &regs->data0);  in fuse_prog()
390 		writel(val, &regs->data1);  in fuse_prog()
391 		writel(0, &regs->data2);  in fuse_prog()
392 		writel(0, &regs->data3);  in fuse_prog()
393 		writel(0, &regs->data0);  in fuse_prog()
396 		writel(0, &regs->data1);  in fuse_prog()
397 		writel(val, &regs->data2);  in fuse_prog()
398 		writel(0, &regs->data3);  in fuse_prog()
399 		writel(0, &regs->data0);  in fuse_prog()
402 		writel(0, &regs->data1);  in fuse_prog()
403 		writel(0, &regs->data2);  in fuse_prog()
404 		writel(val, &regs->data3);  in fuse_prog()
405 		writel(0, &regs->data0);  in fuse_prog()
408 	wait_busy(regs, BV_TIMING_PROG_US);  in fuse_prog()
410 	writel(val, &regs->data);  in fuse_prog()
411 	wait_busy(regs, BV_TIMING_STROBE_PROG_US);  in fuse_prog()
416 	if (readl(&regs->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {  in fuse_prog()
417 		writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), &regs->out_status_clr);  in fuse_prog()
423 	return finish_access(regs, __func__);  in fuse_prog()
428 	struct ocotp_regs *regs;  in fuse_override()  local
433 	ret = prepare_write(&regs, bank, word, __func__);  in fuse_override()
440 	writel(val, &regs->bank[phy_bank].fuse_regs[phy_word << 2]);  in fuse_override()
443 	if (readl(&regs->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {  in fuse_override()
444 		writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), &regs->out_status_clr);  in fuse_override()
450 	return finish_access(regs, __func__);  in fuse_override()