38 static inline void sr_write_reg(struct omap_sr *sr, unsigned offset, u32 value)  in sr_write_reg()  argument
40 	__raw_writel(value, (sr->base + offset));  in sr_write_reg()
43 static inline void sr_modify_reg(struct omap_sr *sr, unsigned offset, u32 mask,  in sr_modify_reg()  argument
57 	if (sr->ip_type == SR_TYPE_V1 && offset == ERRCONFIG_V1)  in sr_modify_reg()
59 	else if (sr->ip_type == SR_TYPE_V2 && offset == ERRCONFIG_V2)  in sr_modify_reg()
62 	reg_val = __raw_readl(sr->base + offset);  in sr_modify_reg()
69 	__raw_writel(reg_val, (sr->base + offset));  in sr_modify_reg()
72 static inline u32 sr_read_reg(struct omap_sr *sr, unsigned offset)  in sr_read_reg()  argument
74 	return __raw_readl(sr->base + offset);  in sr_read_reg()
126 static void sr_set_clk_length(struct omap_sr *sr)  in sr_set_clk_length()  argument
131 	if (IS_ERR(sr->fck))  in sr_set_clk_length()
134 	fclk_speed = clk_get_rate(sr->fck);  in sr_set_clk_length()
138 		sr->clk_length = SRCLKLENGTH_12MHZ_SYSCLK;  in sr_set_clk_length()
141 		sr->clk_length = SRCLKLENGTH_13MHZ_SYSCLK;  in sr_set_clk_length()
144 		sr->clk_length = SRCLKLENGTH_19MHZ_SYSCLK;  in sr_set_clk_length()
147 		sr->clk_length = SRCLKLENGTH_26MHZ_SYSCLK;  in sr_set_clk_length()
150 		sr->clk_length = SRCLKLENGTH_38MHZ_SYSCLK;  in sr_set_clk_length()
153 		dev_err(&sr->pdev->dev, "%s: Invalid fclk rate: %d\n",  in sr_set_clk_length()
159 static void sr_start_vddautocomp(struct omap_sr *sr)  in sr_start_vddautocomp()  argument
162 		dev_warn(&sr->pdev->dev,  in sr_start_vddautocomp()
168 	if (!sr_class->enable(sr))  in sr_start_vddautocomp()
169 		sr->autocomp_active = true;  in sr_start_vddautocomp()
172 static void sr_stop_vddautocomp(struct omap_sr *sr)  in sr_stop_vddautocomp()  argument
175 		dev_warn(&sr->pdev->dev,  in sr_stop_vddautocomp()
181 	if (sr->autocomp_active) {  in sr_stop_vddautocomp()
182 		sr_class->disable(sr, 1);  in sr_stop_vddautocomp()
183 		sr->autocomp_active = false;  in sr_stop_vddautocomp()
189  * only when both sr device and class driver regiter has
190  * completed. This will be attempted to be called from both sr class
191  * driver register and sr device intializtion API's. Only one call
194  * Currently this function registers interrupt handler for a particular SR
196  * requested for interrupts and the SR interrupt line in present.
220 static void sr_v1_disable(struct omap_sr *sr)  in sr_v1_disable()  argument
227 	sr_modify_reg(sr, ERRCONFIG_V1,  in sr_v1_disable()
230 	/* SRCONFIG - disable SR */  in sr_v1_disable()
231 	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, 0x0);  in sr_v1_disable()
233 	/* Disable all other SR interrupts and clear the status as needed */  in sr_v1_disable()
234 	if (sr_read_reg(sr, ERRCONFIG_V1) & ERRCONFIG_VPBOUNDINTST_V1)  in sr_v1_disable()
236 	sr_modify_reg(sr, ERRCONFIG_V1,  in sr_v1_disable()
242 	 * Wait for SR to be disabled.  in sr_v1_disable()
245 	sr_test_cond_timeout((sr_read_reg(sr, ERRCONFIG_V1) &  in sr_v1_disable()
250 		dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",  in sr_v1_disable()
254 	sr_modify_reg(sr, ERRCONFIG_V1, ERRCONFIG_MCUDISACKINTEN,  in sr_v1_disable()
258 static void sr_v2_disable(struct omap_sr *sr)  in sr_v2_disable()  argument
263 	sr_write_reg(sr, IRQENABLE_SET, IRQENABLE_MCUDISABLEACKINT);  in sr_v2_disable()
265 	/* SRCONFIG - disable SR */  in sr_v2_disable()
266 	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, 0x0);  in sr_v2_disable()
269 	 * Disable all other SR interrupts and clear the status  in sr_v2_disable()
273 	if (sr_read_reg(sr, ERRCONFIG_V2) & ERRCONFIG_VPBOUNDINTST_V2)  in sr_v2_disable()
274 		sr_modify_reg(sr, ERRCONFIG_V2, ERRCONFIG_VPBOUNDINTEN_V2,  in sr_v2_disable()
277 		sr_modify_reg(sr, ERRCONFIG_V2, ERRCONFIG_VPBOUNDINTEN_V2,  in sr_v2_disable()
279 	sr_write_reg(sr, IRQENABLE_CLR, (IRQENABLE_MCUACCUMINT |  in sr_v2_disable()
282 	sr_write_reg(sr, IRQSTATUS, (IRQSTATUS_MCUACCUMINT |  in sr_v2_disable()
287 	 * Wait for SR to be disabled.  in sr_v2_disable()
290 	sr_test_cond_timeout((sr_read_reg(sr, IRQSTATUS) &  in sr_v2_disable()
295 		dev_warn(&sr->pdev->dev, "%s: Smartreflex disable timedout\n",  in sr_v2_disable()
299 	sr_write_reg(sr, IRQENABLE_CLR, IRQENABLE_MCUDISABLEACKINT);  in sr_v2_disable()
300 	sr_write_reg(sr, IRQSTATUS, IRQSTATUS_MCUDISABLEACKINT);  in sr_v2_disable()
304 				struct omap_sr *sr, u32 efuse_offs)  in sr_retrieve_nvalue_row()  argument
308 	if (!sr->nvalue_table) {  in sr_retrieve_nvalue_row()
309 		dev_warn(&sr->pdev->dev, "%s: Missing ntarget value table\n",  in sr_retrieve_nvalue_row()
314 	for (i = 0; i < sr->nvalue_count; i++) {  in sr_retrieve_nvalue_row()
315 		if (sr->nvalue_table[i].efuse_offs == efuse_offs)  in sr_retrieve_nvalue_row()
316 			return &sr->nvalue_table[i];  in sr_retrieve_nvalue_row()
327  * @sr:			SR module to be configured.
331  * SR settings if using the ERROR module inside Smartreflex.
332  * SR CLASS 3 by default uses only the ERROR module where as
333  * SR CLASS 2 can choose between ERROR module and MINMAXAVG
336 int sr_configure_errgen(struct omap_sr *sr)  in sr_configure_errgen()  argument
343 	if (!sr) {  in sr_configure_errgen()
349 	if (!sr->clk_length)  in sr_configure_errgen()
350 		sr_set_clk_length(sr);  in sr_configure_errgen()
352 	senp_en = sr->senp_mod;  in sr_configure_errgen()
353 	senn_en = sr->senn_mod;  in sr_configure_errgen()
355 	sr_config = (sr->clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |  in sr_configure_errgen()
358 	switch (sr->ip_type) {  in sr_configure_errgen()
375 		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",  in sr_configure_errgen()
381 	sr_write_reg(sr, SRCONFIG, sr_config);  in sr_configure_errgen()
382 	sr_errconfig = (sr->err_weight << ERRCONFIG_ERRWEIGHT_SHIFT) |  in sr_configure_errgen()
383 		(sr->err_maxlimit << ERRCONFIG_ERRMAXLIMIT_SHIFT) |  in sr_configure_errgen()
384 		(sr->err_minlimit <<  ERRCONFIG_ERRMINLIMIT_SHIFT);  in sr_configure_errgen()
385 	sr_modify_reg(sr, errconfig_offs, (SR_ERRWEIGHT_MASK |  in sr_configure_errgen()
390 	sr_modify_reg(sr, errconfig_offs, (vpboundint_en | vpboundint_st),  in sr_configure_errgen()
398  * @sr:			SR module to be configured.
405 int sr_disable_errgen(struct omap_sr *sr)  in sr_disable_errgen()  argument
410 	if (!sr) {  in sr_disable_errgen()
416 	switch (sr->ip_type) {  in sr_disable_errgen()
428 		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",  in sr_disable_errgen()
434 	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN, 0);  in sr_disable_errgen()
442 	sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);  in sr_disable_errgen()
450  * @sr:			SR module to be configured.
454  * SR settings if using the ERROR module inside Smartreflex.
455  * SR CLASS 3 by default uses only the ERROR module where as
456  * SR CLASS 2 can choose between ERROR module and MINMAXAVG
459 int sr_configure_minmax(struct omap_sr *sr)  in sr_configure_minmax()  argument
465 	if (!sr) {  in sr_configure_minmax()
471 	if (!sr->clk_length)  in sr_configure_minmax()
472 		sr_set_clk_length(sr);  in sr_configure_minmax()
474 	senp_en = sr->senp_mod;  in sr_configure_minmax()
475 	senn_en = sr->senn_mod;  in sr_configure_minmax()
477 	sr_config = (sr->clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |  in sr_configure_minmax()
479 		(sr->accum_data << SRCONFIG_ACCUMDATA_SHIFT);  in sr_configure_minmax()
481 	switch (sr->ip_type) {  in sr_configure_minmax()
492 		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",  in sr_configure_minmax()
498 	sr_write_reg(sr, SRCONFIG, sr_config);  in sr_configure_minmax()
499 	sr_avgwt = (sr->senp_avgweight << AVGWEIGHT_SENPAVGWEIGHT_SHIFT) |  in sr_configure_minmax()
500 		(sr->senn_avgweight << AVGWEIGHT_SENNAVGWEIGHT_SHIFT);  in sr_configure_minmax()
501 	sr_write_reg(sr, AVGWEIGHT, sr_avgwt);  in sr_configure_minmax()
507 	switch (sr->ip_type) {  in sr_configure_minmax()
509 		sr_modify_reg(sr, ERRCONFIG_V1,  in sr_configure_minmax()
517 		sr_write_reg(sr, IRQSTATUS,  in sr_configure_minmax()
520 		sr_write_reg(sr, IRQENABLE_SET,  in sr_configure_minmax()
525 		dev_err(&sr->pdev->dev, "%s: Trying to Configure smartreflex module without specifying the ip\n",  in sr_configure_minmax()
535  * @sr:		pointer to which the SR module to be configured belongs to.
544 int sr_enable(struct omap_sr *sr, unsigned long volt)  in sr_enable()  argument
550 	if (!sr) {  in sr_enable()
556 	volt_data = omap_voltage_get_voltdata(sr->voltdm, volt);  in sr_enable()
559 		dev_warn(&sr->pdev->dev, "%s: Unable to get voltage table for nominal voltage %ld\n",  in sr_enable()
564 	nvalue_row = sr_retrieve_nvalue_row(sr, volt_data->sr_efuse_offs);  in sr_enable()
567 		dev_warn(&sr->pdev->dev, "%s: failure getting SR data for this voltage %ld\n",  in sr_enable()
573 	sr->err_minlimit = nvalue_row->errminlimit;  in sr_enable()
575 	clk_enable(sr->fck);  in sr_enable()
577 	/* Check if SR is already enabled. If yes do nothing */  in sr_enable()
578 	if (sr_read_reg(sr, SRCONFIG) & SRCONFIG_SRENABLE)  in sr_enable()
581 	/* Configure SR */  in sr_enable()
582 	ret = sr_class->configure(sr);  in sr_enable()
586 	sr_write_reg(sr, NVALUERECIPROCAL, nvalue_row->nvalue);  in sr_enable()
588 	/* SRCONFIG - enable SR */  in sr_enable()
589 	sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, SRCONFIG_SRENABLE);  in sr_enable()
592 	sr->enabled = 1;  in sr_enable()
599  * @sr:		pointer to which the SR module to be configured belongs to.
604 void sr_disable(struct omap_sr *sr)  in sr_disable()  argument
606 	if (!sr) {  in sr_disable()
612 	/* Check if SR clocks are already disabled. If yes do nothing */  in sr_disable()
613 	if (!sr->enabled)  in sr_disable()
617 	 * Disable SR if only it is indeed enabled. Else just  in sr_disable()
620 	if (sr_read_reg(sr, SRCONFIG) & SRCONFIG_SRENABLE) {  in sr_disable()
621 		switch (sr->ip_type) {  in sr_disable()
623 			sr_v1_disable(sr);  in sr_disable()
626 			sr_v2_disable(sr);  in sr_disable()
629 			dev_err(&sr->pdev->dev, "UNKNOWN IP type %d\n",  in sr_disable()
630 				sr->ip_type);  in sr_disable()
634 	clk_disable(sr->fck);  in sr_disable()
635 	sr->enabled = 0;  in sr_disable()
640  * @class_data:	The structure containing various sr class specific data.
666 	 * both sr driver and sr class driver to be initiallized.  in sr_register_class()
675  * omap_sr_enable() -  API to enable SR clocks and to call into the
677  * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
686 	struct omap_sr *sr = _sr_lookup(voltdm);  in omap_sr_enable()  local
688 	if (IS_ERR(sr)) {  in omap_sr_enable()
693 	if (!sr->autocomp_active)  in omap_sr_enable()
697 		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",  in omap_sr_enable()
702 	sr_class->enable(sr);  in omap_sr_enable()
706  * omap_sr_disable() - API to disable SR without resetting the voltage
708  * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
718 	struct omap_sr *sr = _sr_lookup(voltdm);  in omap_sr_disable()  local
720 	if (IS_ERR(sr)) {  in omap_sr_disable()
725 	if (!sr->autocomp_active)  in omap_sr_disable()
729 		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",  in omap_sr_disable()
734 	sr_class->disable(sr, 0);  in omap_sr_disable()
738  * omap_sr_disable_reset_volt() - API to disable SR and reset the
740  * @voltdm:	VDD pointer to which the SR module to be configured belongs to.
750 	struct omap_sr *sr = _sr_lookup(voltdm);  in omap_sr_disable_reset_volt()  local
752 	if (IS_ERR(sr)) {  in omap_sr_disable_reset_volt()
757 	if (!sr->autocomp_active)  in omap_sr_disable_reset_volt()
761 		dev_warn(&sr->pdev->dev, "%s: smartreflex class driver not registered\n",  in omap_sr_disable_reset_volt()
766 	sr_class->disable(sr, 1);  in omap_sr_disable_reset_volt()
876 	 * both sr driver and sr class driver to be initiallized.  in omap_sr_probe()
881 			pr_warn("%s: Error in SR late init\n", __func__);  in omap_sr_probe()
985 		pr_err("%s: platform driver register failed for SR\n",  in sr_init()