waterDataPreprocessing basicAlgorithmEncapsulation.c 徐寅秋 commit at 2020-10-13

waterDataPreprocessing/dataProcessing/basicAlgorithmEncapsulation.c

@@ -104,3 +104,170 @@ static void omap2_onenand_set_async_mode(void __iomem *onenand_base)
 static void set_onenand_cfg(void __iomem *onenand_base)
 {
 	u32 reg;
+
+	reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
+	reg &= ~((0x7 << ONENAND_SYS_CFG1_BRL_SHIFT) | (0x7 << 9));
+	reg |=	(latency << ONENAND_SYS_CFG1_BRL_SHIFT) |
+		ONENAND_SYS_CFG1_BL_16;
+	if (onenand_flags & ONENAND_FLAG_SYNCREAD)
+		reg |= ONENAND_SYS_CFG1_SYNC_READ;
+	else
+		reg &= ~ONENAND_SYS_CFG1_SYNC_READ;
+	if (onenand_flags & ONENAND_FLAG_SYNCWRITE)
+		reg |= ONENAND_SYS_CFG1_SYNC_WRITE;
+	else
+		reg &= ~ONENAND_SYS_CFG1_SYNC_WRITE;
+	if (onenand_flags & ONENAND_FLAG_HF)
+		reg |= ONENAND_SYS_CFG1_HF;
+	else
+		reg &= ~ONENAND_SYS_CFG1_HF;
+	if (onenand_flags & ONENAND_FLAG_VHF)
+		reg |= ONENAND_SYS_CFG1_VHF;
+	else
+		reg &= ~ONENAND_SYS_CFG1_VHF;
+	writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
+}
+
+static int omap2_onenand_get_freq(struct omap_onenand_platform_data *cfg,
+				  void __iomem *onenand_base)
+{
+	u16 ver = readw(onenand_base + ONENAND_REG_VERSION_ID);
+	int freq;
+
+	switch ((ver >> 4) & 0xf) {
+	case 0:
+		freq = 40;
+		break;
+	case 1:
+		freq = 54;
+		break;
+	case 2:
+		freq = 66;
+		break;
+	case 3:
+		freq = 83;
+		break;
+	case 4:
+		freq = 104;
+		break;
+	default:
+		freq = 54;
+		break;
+	}
+
+	return freq;
+}
+
+static struct gpmc_timings
+omap2_onenand_calc_sync_timings(struct omap_onenand_platform_data *cfg,
+				int freq)
+{
+	struct gpmc_device_timings dev_t;
+	struct gpmc_timings t;
+	const int t_cer  = 15;
+	const int t_avdp = 12;
+	const int t_cez  = 20; /* max of t_cez, t_oez */
+	const int t_wpl  = 40;
+	const int t_wph  = 30;
+	int min_gpmc_clk_period, t_ces, t_avds, t_avdh, t_ach, t_aavdh, t_rdyo;
+	int div, gpmc_clk_ns;
+
+	if (cfg->flags & ONENAND_SYNC_READ)
+		onenand_flags = ONENAND_FLAG_SYNCREAD;
+	else if (cfg->flags & ONENAND_SYNC_READWRITE)
+		onenand_flags = ONENAND_FLAG_SYNCREAD | ONENAND_FLAG_SYNCWRITE;
+
+	switch (freq) {
+	case 104:
+		min_gpmc_clk_period = 9600; /* 104 MHz */
+		t_ces   = 3;
+		t_avds  = 4;
+		t_avdh  = 2;
+		t_ach   = 3;
+		t_aavdh = 6;
+		t_rdyo  = 6;
+		break;
+	case 83:
+		min_gpmc_clk_period = 12000; /* 83 MHz */
+		t_ces   = 5;
+		t_avds  = 4;
+		t_avdh  = 2;
+		t_ach   = 6;
+		t_aavdh = 6;
+		t_rdyo  = 9;
+		break;
+	case 66:
+		min_gpmc_clk_period = 15000; /* 66 MHz */
+		t_ces   = 6;
+		t_avds  = 5;
+		t_avdh  = 2;
+		t_ach   = 6;
+		t_aavdh = 6;
+		t_rdyo  = 11;
+		break;
+	default:
+		min_gpmc_clk_period = 18500; /* 54 MHz */
+		t_ces   = 7;
+		t_avds  = 7;
+		t_avdh  = 7;
+		t_ach   = 9;
+		t_aavdh = 7;
+		t_rdyo  = 15;
+		onenand_flags &= ~ONENAND_FLAG_SYNCWRITE;
+		break;
+	}
+
+	div = gpmc_calc_divider(min_gpmc_clk_period);
+	gpmc_clk_ns = gpmc_ticks_to_ns(div);
+	if (gpmc_clk_ns < 15) /* >66Mhz */
+		onenand_flags |= ONENAND_FLAG_HF;
+	else
+		onenand_flags &= ~ONENAND_FLAG_HF;
+	if (gpmc_clk_ns < 12) /* >83Mhz */
+		onenand_flags |= ONENAND_FLAG_VHF;
+	else
+		onenand_flags &= ~ONENAND_FLAG_VHF;
+	if (onenand_flags & ONENAND_FLAG_VHF)
+		latency = 8;
+	else if (onenand_flags & ONENAND_FLAG_HF)
+		latency = 6;
+	else if (gpmc_clk_ns >= 25) /* 40 MHz*/
+		latency = 3;
+	else
+		latency = 4;
+
+	/* Set synchronous read timings */
+	memset(&dev_t, 0, sizeof(dev_t));
+
+	dev_t.mux = true;
+	dev_t.sync_read = true;
+	if (onenand_flags & ONENAND_FLAG_SYNCWRITE) {
+		dev_t.sync_write = true;
+	} else {
+		dev_t.t_avdp_w = max(t_avdp, t_cer) * 1000;
+		dev_t.t_wpl = t_wpl * 1000;
+		dev_t.t_wph = t_wph * 1000;
+		dev_t.t_aavdh = t_aavdh * 1000;
+	}
+	dev_t.ce_xdelay = true;
+	dev_t.avd_xdelay = true;
+	dev_t.oe_xdelay = true;
+	dev_t.we_xdelay = true;
+	dev_t.clk = min_gpmc_clk_period;
+	dev_t.t_bacc = dev_t.clk;
+	dev_t.t_ces = t_ces * 1000;
+	dev_t.t_avds = t_avds * 1000;
+	dev_t.t_avdh = t_avdh * 1000;
+	dev_t.t_ach = t_ach * 1000;
+	dev_t.cyc_iaa = (latency + 1);
+	dev_t.t_cez_r = t_cez * 1000;
+	dev_t.t_cez_w = dev_t.t_cez_r;
+	dev_t.cyc_aavdh_oe = 1;
+	dev_t.t_rdyo = t_rdyo * 1000 + min_gpmc_clk_period;
+
+	gpmc_calc_timings(&t, &dev_t);
+
+	return t;
+}
+
+static int gpmc_set_sync_mode(int cs, struct gpmc_timings *t)