Lines Matching refs:ebi
169 int (*check)(struct stm32_fmc2_ebi *ebi,
171 u32 (*calculate)(struct stm32_fmc2_ebi *ebi, int cs, u32 setup);
172 int (*set)(struct stm32_fmc2_ebi *ebi,
177 static int stm32_fmc2_ebi_check_mux(struct stm32_fmc2_ebi *ebi,
183 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
191 static int stm32_fmc2_ebi_check_waitcfg(struct stm32_fmc2_ebi *ebi,
197 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
205 static int stm32_fmc2_ebi_check_sync_trans(struct stm32_fmc2_ebi *ebi,
211 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
219 static int stm32_fmc2_ebi_check_async_trans(struct stm32_fmc2_ebi *ebi,
225 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
233 static int stm32_fmc2_ebi_check_cpsize(struct stm32_fmc2_ebi *ebi,
239 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
247 static int stm32_fmc2_ebi_check_address_hold(struct stm32_fmc2_ebi *ebi,
253 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
255 regmap_read(ebi->regmap, FMC2_BWTR(cs), &bxtr);
257 regmap_read(ebi->regmap, FMC2_BTR(cs), &bxtr);
266 static int stm32_fmc2_ebi_check_clk_period(struct stm32_fmc2_ebi *ebi,
272 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
274 regmap_read(ebi->regmap, FMC2_BCR1, &bcr1);
284 static int stm32_fmc2_ebi_check_cclk(struct stm32_fmc2_ebi *ebi,
291 return stm32_fmc2_ebi_check_sync_trans(ebi, prop, cs);
294 static u32 stm32_fmc2_ebi_ns_to_clock_cycles(struct stm32_fmc2_ebi *ebi,
297 unsigned long hclk = clk_get_rate(ebi->clk);
303 static u32 stm32_fmc2_ebi_ns_to_clk_period(struct stm32_fmc2_ebi *ebi,
306 u32 nb_clk_cycles = stm32_fmc2_ebi_ns_to_clock_cycles(ebi, cs, setup);
309 regmap_read(ebi->regmap, FMC2_BCR1, &bcr);
311 regmap_read(ebi->regmap, FMC2_BTR1, &btr);
313 regmap_read(ebi->regmap, FMC2_BTR(cs), &btr);
342 static int stm32_fmc2_ebi_set_bit_field(struct stm32_fmc2_ebi *ebi,
353 regmap_update_bits(ebi->regmap, reg, prop->reg_mask,
359 static int stm32_fmc2_ebi_set_trans_type(struct stm32_fmc2_ebi *ebi,
484 regmap_update_bits(ebi->regmap, FMC2_BWTR(cs),
486 regmap_update_bits(ebi->regmap, FMC2_BTR(cs), btr_mask, btr);
487 regmap_update_bits(ebi->regmap, FMC2_BCR(cs), bcr_mask, bcr);
492 static int stm32_fmc2_ebi_set_buswidth(struct stm32_fmc2_ebi *ebi,
510 regmap_update_bits(ebi->regmap, FMC2_BCR(cs), FMC2_BCR_MWID, val);
515 static int stm32_fmc2_ebi_set_cpsize(struct stm32_fmc2_ebi *ebi,
542 regmap_update_bits(ebi->regmap, FMC2_BCR(cs), FMC2_BCR_CPSIZE, val);
547 static int stm32_fmc2_ebi_set_bl_setup(struct stm32_fmc2_ebi *ebi,
555 regmap_update_bits(ebi->regmap, FMC2_BCR(cs), FMC2_BCR_NBLSET, val);
560 static int stm32_fmc2_ebi_set_address_setup(struct stm32_fmc2_ebi *ebi,
572 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
574 regmap_read(ebi->regmap, FMC2_BWTR(cs), &bxtr);
576 regmap_read(ebi->regmap, FMC2_BTR(cs), &bxtr);
583 regmap_update_bits(ebi->regmap, reg, FMC2_BXTR_ADDSET, val);
588 static int stm32_fmc2_ebi_set_address_hold(struct stm32_fmc2_ebi *ebi,
601 regmap_update_bits(ebi->regmap, reg, FMC2_BXTR_ADDHLD, val);
606 static int stm32_fmc2_ebi_set_data_setup(struct stm32_fmc2_ebi *ebi,
619 regmap_update_bits(ebi->regmap, reg, FMC2_BXTR_DATAST, val);
624 static int stm32_fmc2_ebi_set_bus_turnaround(struct stm32_fmc2_ebi *ebi,
637 regmap_update_bits(ebi->regmap, reg, FMC2_BXTR_BUSTURN, val);
642 static int stm32_fmc2_ebi_set_data_hold(struct stm32_fmc2_ebi *ebi,
658 regmap_update_bits(ebi->regmap, reg, FMC2_BXTR_DATAHLD, val);
663 static int stm32_fmc2_ebi_set_clk_period(struct stm32_fmc2_ebi *ebi,
671 regmap_update_bits(ebi->regmap, FMC2_BTR(cs), FMC2_BTR_CLKDIV, val);
676 static int stm32_fmc2_ebi_set_data_latency(struct stm32_fmc2_ebi *ebi,
684 regmap_update_bits(ebi->regmap, FMC2_BTR(cs), FMC2_BTR_DATLAT, val);
689 static int stm32_fmc2_ebi_set_max_low_pulse(struct stm32_fmc2_ebi *ebi,
698 regmap_read(ebi->regmap, FMC2_PCSCNTR, &pcscntr);
701 regmap_update_bits(ebi->regmap, FMC2_PCSCNTR,
712 regmap_update_bits(ebi->regmap, FMC2_PCSCNTR,
719 /* st,fmc2-ebi-cs-trans-type must be the first property */
721 .name = "st,fmc2-ebi-cs-transaction-type",
726 .name = "st,fmc2-ebi-cs-cclk-enable",
734 .name = "st,fmc2-ebi-cs-mux-enable",
742 .name = "st,fmc2-ebi-cs-buswidth",
747 .name = "st,fmc2-ebi-cs-waitpol-high",
754 .name = "st,fmc2-ebi-cs-waitcfg-enable",
762 .name = "st,fmc2-ebi-cs-wait-enable",
770 .name = "st,fmc2-ebi-cs-asyncwait-enable",
778 .name = "st,fmc2-ebi-cs-cpsize",
783 .name = "st,fmc2-ebi-cs-byte-lane-setup-ns",
788 .name = "st,fmc2-ebi-cs-address-setup-ns",
796 .name = "st,fmc2-ebi-cs-address-hold-ns",
804 .name = "st,fmc2-ebi-cs-data-setup-ns",
812 .name = "st,fmc2-ebi-cs-bus-turnaround-ns",
819 .name = "st,fmc2-ebi-cs-data-hold-ns",
826 .name = "st,fmc2-ebi-cs-clk-period-ns",
833 .name = "st,fmc2-ebi-cs-data-latency-ns",
839 .name = "st,fmc2-ebi-cs-write-address-setup-ns",
847 .name = "st,fmc2-ebi-cs-write-address-hold-ns",
855 .name = "st,fmc2-ebi-cs-write-data-setup-ns",
863 .name = "st,fmc2-ebi-cs-write-bus-turnaround-ns",
870 .name = "st,fmc2-ebi-cs-write-data-hold-ns",
877 .name = "st,fmc2-ebi-cs-max-low-pulse-ns",
883 static int stm32_fmc2_ebi_parse_prop(struct stm32_fmc2_ebi *ebi,
888 struct device *dev = ebi->dev;
896 if (prop->check && prop->check(ebi, prop, cs))
926 setup = prop->calculate(ebi, cs, val);
931 return prop->set(ebi, prop, cs, setup);
934 static void stm32_fmc2_ebi_enable_bank(struct stm32_fmc2_ebi *ebi, int cs)
936 regmap_update_bits(ebi->regmap, FMC2_BCR(cs),
940 static void stm32_fmc2_ebi_disable_bank(struct stm32_fmc2_ebi *ebi, int cs)
942 regmap_update_bits(ebi->regmap, FMC2_BCR(cs), FMC2_BCR_MBKEN, 0);
945 static void stm32_fmc2_ebi_save_setup(struct stm32_fmc2_ebi *ebi)
950 regmap_read(ebi->regmap, FMC2_BCR(cs), &ebi->bcr[cs]);
951 regmap_read(ebi->regmap, FMC2_BTR(cs), &ebi->btr[cs]);
952 regmap_read(ebi->regmap, FMC2_BWTR(cs), &ebi->bwtr[cs]);
955 regmap_read(ebi->regmap, FMC2_PCSCNTR, &ebi->pcscntr);
958 static void stm32_fmc2_ebi_set_setup(struct stm32_fmc2_ebi *ebi)
963 regmap_write(ebi->regmap, FMC2_BCR(cs), ebi->bcr[cs]);
964 regmap_write(ebi->regmap, FMC2_BTR(cs), ebi->btr[cs]);
965 regmap_write(ebi->regmap, FMC2_BWTR(cs), ebi->bwtr[cs]);
968 regmap_write(ebi->regmap, FMC2_PCSCNTR, ebi->pcscntr);
971 static void stm32_fmc2_ebi_disable_banks(struct stm32_fmc2_ebi *ebi)
976 if (!(ebi->bank_assigned & BIT(cs)))
979 stm32_fmc2_ebi_disable_bank(ebi, cs);
984 static bool stm32_fmc2_ebi_nwait_used_by_ctrls(struct stm32_fmc2_ebi *ebi)
990 if (!(ebi->bank_assigned & BIT(cs)))
993 regmap_read(ebi->regmap, FMC2_BCR(cs), &bcr);
995 ebi->bank_assigned & BIT(FMC2_NAND))
1002 static void stm32_fmc2_ebi_enable(struct stm32_fmc2_ebi *ebi)
1004 regmap_update_bits(ebi->regmap, FMC2_BCR1,
1008 static void stm32_fmc2_ebi_disable(struct stm32_fmc2_ebi *ebi)
1010 regmap_update_bits(ebi->regmap, FMC2_BCR1, FMC2_BCR1_FMC2EN, 0);
1013 static int stm32_fmc2_ebi_setup_cs(struct stm32_fmc2_ebi *ebi,
1020 stm32_fmc2_ebi_disable_bank(ebi, cs);
1025 ret = stm32_fmc2_ebi_parse_prop(ebi, dev_node, p, cs);
1027 dev_err(ebi->dev, "property %s could not be set: %d\n",
1033 stm32_fmc2_ebi_enable_bank(ebi, cs);
1038 static int stm32_fmc2_ebi_parse_dt(struct stm32_fmc2_ebi *ebi)
1040 struct device *dev = ebi->dev;
1061 if (ebi->bank_assigned & BIT(bank)) {
1068 ret = stm32_fmc2_ebi_setup_cs(ebi, child, bank);
1077 ebi->bank_assigned |= BIT(bank);
1086 if (stm32_fmc2_ebi_nwait_used_by_ctrls(ebi)) {
1091 stm32_fmc2_ebi_enable(ebi);
1099 struct stm32_fmc2_ebi *ebi;
1103 ebi = devm_kzalloc(&pdev->dev, sizeof(*ebi), GFP_KERNEL);
1104 if (!ebi)
1107 ebi->dev = dev;
1109 ebi->regmap = device_node_to_regmap(dev->of_node);
1110 if (IS_ERR(ebi->regmap))
1111 return PTR_ERR(ebi->regmap);
1113 ebi->clk = devm_clk_get(dev, NULL);
1114 if (IS_ERR(ebi->clk))
1115 return PTR_ERR(ebi->clk);
1121 ret = clk_prepare_enable(ebi->clk);
1130 ret = stm32_fmc2_ebi_parse_dt(ebi);
1134 stm32_fmc2_ebi_save_setup(ebi);
1135 platform_set_drvdata(pdev, ebi);
1140 stm32_fmc2_ebi_disable_banks(ebi);
1141 stm32_fmc2_ebi_disable(ebi);
1142 clk_disable_unprepare(ebi->clk);
1149 struct stm32_fmc2_ebi *ebi = platform_get_drvdata(pdev);
1152 stm32_fmc2_ebi_disable_banks(ebi);
1153 stm32_fmc2_ebi_disable(ebi);
1154 clk_disable_unprepare(ebi->clk);
1161 struct stm32_fmc2_ebi *ebi = dev_get_drvdata(dev);
1163 stm32_fmc2_ebi_disable(ebi);
1164 clk_disable_unprepare(ebi->clk);
1172 struct stm32_fmc2_ebi *ebi = dev_get_drvdata(dev);
1177 ret = clk_prepare_enable(ebi->clk);
1181 stm32_fmc2_ebi_set_setup(ebi);
1182 stm32_fmc2_ebi_enable(ebi);
1191 {.compatible = "st,stm32mp1-fmc2-ebi"},
1209 MODULE_DESCRIPTION("STMicroelectronics STM32 FMC2 ebi driver");