waterHeterogeneousDataSynchronization connectTheSignalSlot.c 韩正义 commit at 2021-03-01

waterHeterogeneousDataSynchronization/monitoringDataProcessing/connectTheSignalSlot.c

@@ -324,3 +324,155 @@ void s3c2410_iotiming_debugfs(struct seq_file *seq,
 	unsigned int tcoh;
 	unsigned int tcah;
 
+	seq_printf(seq, "BANKCON=0x%08lx\n", bankcon);
+
+	tcah = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcah_SHIFT);
+	tcoh = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcoh_SHIFT);
+	tcos = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcos_SHIFT);
+	tacs = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tacs_SHIFT);
+	tacc = get_tacc(hclk, bankcon >> S3C2410_BANKCON_Tacc_SHIFT);
+
+	seq_printf(seq,
+		   "\tRead: Tacs=%d.%d, Tcos=%d.%d, Tacc=%d.%d, Tcoh=%d.%d, Tcah=%d.%d\n",
+		   print_ns(bt->tacs),
+		   print_ns(bt->tcos),
+		   print_ns(bt->tacc),
+		   print_ns(bt->tcoh),
+		   print_ns(bt->tcah));
+
+	seq_printf(seq,
+		   "\t Set: Tacs=%d.%d, Tcos=%d.%d, Tacc=%d.%d, Tcoh=%d.%d, Tcah=%d.%d\n",
+		   print_ns(tacs),
+		   print_ns(tcos),
+		   print_ns(tacc),
+		   print_ns(tcoh),
+		   print_ns(tcah));
+}
+
+/**
+ * s3c2410_iotiming_calc - Calculate bank timing for frequency change.
+ * @cfg: The frequency configuration
+ * @iot: The IO timing information to fill out.
+ *
+ * Calculate the new values for the banks in @iot based on the new
+ * frequency information in @cfg. This is then used by s3c2410_iotiming_set()
+ * to update the timing when necessary.
+ */
+int s3c2410_iotiming_calc(struct s3c_cpufreq_config *cfg,
+			  struct s3c_iotimings *iot)
+{
+	struct s3c2410_iobank_timing *bt;
+	unsigned long bankcon;
+	int bank;
+	int ret;
+
+	for (bank = 0; bank < MAX_BANKS; bank++) {
+		bankcon = __raw_readl(bank_reg(bank));
+		bt = iot->bank[bank].io_2410;
+
+		if (!bt)
+			continue;
+
+		bt->bankcon = bankcon;
+
+		ret = s3c2410_calc_bank(cfg, bt);
+		if (ret) {
+			printk(KERN_ERR "%s: cannot calculate bank %d io\n",
+			       __func__, bank);
+			goto err;
+		}
+
+		s3c_freq_iodbg("%s: bank %d: con=%08lx\n",
+			       __func__, bank, bt->bankcon);
+	}
+
+	return 0;
+ err:
+	return ret;
+}
+
+/**
+ * s3c2410_iotiming_set - set the IO timings from the given setup.
+ * @cfg: The frequency configuration
+ * @iot: The IO timing information to use.
+ *
+ * Set all the currently used IO bank timing information generated
+ * by s3c2410_iotiming_calc() once the core has validated that all
+ * the new values are within permitted bounds.
+ */
+void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg,
+			  struct s3c_iotimings *iot)
+{
+	struct s3c2410_iobank_timing *bt;
+	int bank;
+
+	/* set the io timings from the specifier */
+
+	for (bank = 0; bank < MAX_BANKS; bank++) {
+		bt = iot->bank[bank].io_2410;
+		if (!bt)
+			continue;
+
+		__raw_writel(bt->bankcon, bank_reg(bank));
+	}
+}
+
+/**
+ * s3c2410_iotiming_get - Get the timing information from current registers.
+ * @cfg: The frequency configuration
+ * @timings: The IO timing information to fill out.
+ *
+ * Calculate the @timings timing information from the current frequency
+ * information in @cfg, and the new frequency configur
+ * through all the IO banks, reading the state and then updating @iot
+ * as necessary.
+ *
+ * This is used at the moment on initialisation to get the current
+ * configuration so that boards do not have to carry their own setup
+ * if the timings are correct on initialisation.
+ */
+
+int s3c2410_iotiming_get(struct s3c_cpufreq_config *cfg,
+			 struct s3c_iotimings *timings)
+{
+	struct s3c2410_iobank_timing *bt;
+	unsigned long bankcon;
+	unsigned long bwscon;
+	int bank;
+
+	bwscon = __raw_readl(S3C2410_BWSCON);
+
+	/* look through all banks to see what is currently set. */
+
+	for (bank = 0; bank < MAX_BANKS; bank++) {
+		bankcon = __raw_readl(bank_reg(bank));
+
+		if (!bank_is_io(bankcon))
+			continue;
+
+		s3c_freq_iodbg("%s: bank %d: con %08lx\n",
+			       __func__, bank, bankcon);
+
+		bt = kzalloc(sizeof(struct s3c2410_iobank_timing), GFP_KERNEL);
+		if (!bt) {
+			printk(KERN_ERR "%s: no memory for bank\n", __func__);
+			return -ENOMEM;
+		}
+
+		/* find out in nWait is enabled for bank. */
+
+		if (bank != 0) {
+			unsigned long tmp  = S3C2410_BWSCON_GET(bwscon, bank);
+			if (tmp & S3C2410_BWSCON_WS)
+				bt->nwait_en = 1;
+		}
+
+		timings->bank[bank].io_2410 = bt;
+		bt->bankcon = bankcon;
+
+		s3c2410_iotiming_getbank(cfg, bt);
+	}
+
+	s3c2410_print_timing("get", timings);
+	return 0;
+}