Lines Matching defs:nemc
21 #include <linux/jz4780-nemc.h>
97 struct jz4780_nemc *nemc = dev_get_drvdata(dev->parent);
100 nfcsr = readl(nemc->base + NEMC_NFCSR);
113 writel(nfcsr, nemc->base + NEMC_NFCSR);
128 struct jz4780_nemc *nemc = dev_get_drvdata(dev->parent);
131 nfcsr = readl(nemc->base + NEMC_NFCSR);
138 writel(nfcsr, nemc->base + NEMC_NFCSR);
142 static uint32_t jz4780_nemc_clk_period(struct jz4780_nemc *nemc)
146 rate = clk_get_rate(nemc->clk);
154 static uint32_t jz4780_nemc_ns_to_cycles(struct jz4780_nemc *nemc, uint32_t ns)
156 return ((ns * 1000) + nemc->clk_period - 1) / nemc->clk_period;
159 static bool jz4780_nemc_configure_bank(struct jz4780_nemc *nemc,
188 smcr = readl(nemc->base + NEMC_SMCRn(bank));
191 if (!of_property_read_u32(node, "ingenic,nemc-bus-width", &val)) {
202 dev_err(nemc->dev, "unsupported bus width: %u\n", val);
207 if (of_property_read_u32(node, "ingenic,nemc-tAS", &val) == 0) {
209 cycles = jz4780_nemc_ns_to_cycles(nemc, val);
210 if (cycles > nemc->soc_info->tas_tah_cycles_max) {
211 dev_err(nemc->dev, "tAS %u is too high (%u cycles)\n",
219 if (of_property_read_u32(node, "ingenic,nemc-tAH", &val) == 0) {
221 cycles = jz4780_nemc_ns_to_cycles(nemc, val);
222 if (cycles > nemc->soc_info->tas_tah_cycles_max) {
223 dev_err(nemc->dev, "tAH %u is too high (%u cycles)\n",
231 if (of_property_read_u32(node, "ingenic,nemc-tBP", &val) == 0) {
233 cycles = jz4780_nemc_ns_to_cycles(nemc, val);
235 dev_err(nemc->dev, "tBP %u is too high (%u cycles)\n",
243 if (of_property_read_u32(node, "ingenic,nemc-tAW", &val) == 0) {
245 cycles = jz4780_nemc_ns_to_cycles(nemc, val);
247 dev_err(nemc->dev, "tAW %u is too high (%u cycles)\n",
255 if (of_property_read_u32(node, "ingenic,nemc-tSTRV", &val) == 0) {
257 cycles = jz4780_nemc_ns_to_cycles(nemc, val);
259 dev_err(nemc->dev, "tSTRV %u is too high (%u cycles)\n",
267 writel(smcr, nemc->base + NEMC_SMCRn(bank));
274 struct jz4780_nemc *nemc;
282 nemc = devm_kzalloc(dev, sizeof(*nemc), GFP_KERNEL);
283 if (!nemc)
286 nemc->soc_info = device_get_match_data(dev);
287 if (!nemc->soc_info)
290 spin_lock_init(&nemc->lock);
291 nemc->dev = dev;
308 nemc->base = devm_ioremap(dev, res->start, NEMC_REG_LEN);
309 if (!nemc->base) {
314 writel(0, nemc->base + NEMC_NFCSR);
316 nemc->clk = devm_clk_get(dev, NULL);
317 if (IS_ERR(nemc->clk)) {
319 return PTR_ERR(nemc->clk);
322 ret = clk_prepare_enable(nemc->clk);
328 nemc->clk_period = jz4780_nemc_clk_period(nemc);
329 if (!nemc->clk_period) {
331 clk_disable_unprepare(nemc->clk);
341 for_each_child_of_node(nemc->dev->of_node, child) {
347 dev_err(nemc->dev,
360 dev_err(nemc->dev, "%pOF has no addresses\n",
363 } else if (nemc->banks_present & referenced) {
364 dev_err(nemc->dev, "%pOF conflicts with another node\n",
371 if (!jz4780_nemc_configure_bank(nemc, bank, child)) {
378 if (of_platform_device_create(child, NULL, nemc->dev))
379 nemc->banks_present |= referenced;
383 platform_set_drvdata(pdev, nemc);
390 struct jz4780_nemc *nemc = platform_get_drvdata(pdev);
392 clk_disable_unprepare(nemc->clk);
405 { .compatible = "ingenic,jz4740-nemc", .data = &jz4740_soc_info, },
406 { .compatible = "ingenic,jz4780-nemc", .data = &jz4780_soc_info, },
414 .name = "jz4780-nemc",