thermal: imx_tmu: Move architecture code into driver

Stop polluting the architecture directory with driver specific code,
move it into driver where it should be. Split the code slightly so
the MX8MM/MX8MN fuse readout and programming and MX8MP fuse readout
and programming are in their separate functions, and called in case
of matching SoC.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>

1 files changed, 93 insertions, 2 deletions

diff --git a/drivers/thermal/imx_tmu.c b/drivers/thermal/imx_tmu.c
index 8d638797eb..eb5605590f 100644
--- a/drivers/thermal/imx_tmu.c
+++ b/drivers/thermal/imx_tmu.c
@@ -244,8 +244,99 @@ static int imx_tmu_calibration(struct udevice *dev)
 	return 0;
 }
 
-void __weak imx_tmu_arch_init(void *reg_base)
+#if defined(CONFIG_IMX8MM) || defined(CONFIG_IMX8MN)
+static void imx_tmu_mx8mm_mx8mn_init(struct udevice *dev)
 {
+	/* Load TCALIV and TASR from fuses */
+	struct ocotp_regs *ocotp =
+		(struct ocotp_regs *)OCOTP_BASE_ADDR;
+	struct fuse_bank *bank = &ocotp->bank[3];
+	struct fuse_bank3_regs *fuse =
+		(struct fuse_bank3_regs *)bank->fuse_regs;
+	struct imx_tmu_plat *pdata = dev_get_plat(dev);
+	void *reg_base = (void *)pdata->regs;
+
+	u32 tca_rt, tca_hr, tca_en;
+	u32 buf_vref, buf_slope;
+
+	tca_rt = fuse->ana0 & 0xFF;
+	tca_hr = (fuse->ana0 & 0xFF00) >> 8;
+	tca_en = (fuse->ana0 & 0x2000000) >> 25;
+
+	buf_vref = (fuse->ana0 & 0x1F00000) >> 20;
+	buf_slope = (fuse->ana0 & 0xF0000) >> 16;
+
+	writel(buf_vref | (buf_slope << 16), (ulong)reg_base + 0x28);
+	writel((tca_en << 31) | (tca_hr << 16) | tca_rt,
+	       (ulong)reg_base + 0x30);
+}
+#else
+static inline void imx_tmu_mx8mm_mx8mn_init(struct udevice *dev) { }
+#endif
+
+#if defined(CONFIG_IMX8MP)
+static void imx_tmu_mx8mp_init(struct udevice *dev)
+{
+	/* Load TCALIV0/1/m40 and TRIM from fuses */
+	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+	struct fuse_bank *bank = &ocotp->bank[38];
+	struct fuse_bank38_regs *fuse =
+		(struct fuse_bank38_regs *)bank->fuse_regs;
+	struct fuse_bank *bank2 = &ocotp->bank[39];
+	struct fuse_bank39_regs *fuse2 =
+		(struct fuse_bank39_regs *)bank2->fuse_regs;
+	struct imx_tmu_plat *pdata = dev_get_plat(dev);
+	void *reg_base = (void *)pdata->regs;
+	u32 buf_vref, buf_slope, bjt_cur, vlsb, bgr;
+	u32 reg;
+	u32 tca40[2], tca25[2], tca105[2];
+
+	/* For blank sample */
+	if (!fuse->ana_trim2 && !fuse->ana_trim3 &&
+	    !fuse->ana_trim4 && !fuse2->ana_trim5) {
+		/* Use a default 25C binary codes */
+		tca25[0] = 1596;
+		tca25[1] = 1596;
+		writel(tca25[0], (ulong)reg_base + 0x30);
+		writel(tca25[1], (ulong)reg_base + 0x34);
+		return;
+	}
+
+	buf_vref = (fuse->ana_trim2 & 0xc0) >> 6;
+	buf_slope = (fuse->ana_trim2 & 0xF00) >> 8;
+	bjt_cur = (fuse->ana_trim2 & 0xF000) >> 12;
+	bgr = (fuse->ana_trim2 & 0xF0000) >> 16;
+	vlsb = (fuse->ana_trim2 & 0xF00000) >> 20;
+	writel(buf_vref | (buf_slope << 16), (ulong)reg_base + 0x28);
+
+	reg = (bgr << 28) | (bjt_cur << 20) | (vlsb << 12) | (1 << 7);
+	writel(reg, (ulong)reg_base + 0x3c);
+
+	tca40[0] = (fuse->ana_trim3 & 0xFFF0000) >> 16;
+	tca25[0] = (fuse->ana_trim3 & 0xF0000000) >> 28;
+	tca25[0] |= ((fuse->ana_trim4 & 0xFF) << 4);
+	tca105[0] = (fuse->ana_trim4 & 0xFFF00) >> 8;
+	tca40[1] = (fuse->ana_trim4 & 0xFFF00000) >> 20;
+	tca25[1] = fuse2->ana_trim5 & 0xFFF;
+	tca105[1] = (fuse2->ana_trim5 & 0xFFF000) >> 12;
+
+	/* use 25c for 1p calibration */
+	writel(tca25[0] | (tca105[0] << 16), (ulong)reg_base + 0x30);
+	writel(tca25[1] | (tca105[1] << 16), (ulong)reg_base + 0x34);
+	writel(tca40[0] | (tca40[1] << 16), (ulong)reg_base + 0x38);
+}
+#else
+static inline void imx_tmu_mx8mp_init(struct udevice *dev) { }
+#endif
+
+static void imx_tmu_arch_init(struct udevice *dev)
+{
+	if (is_imx8mm() || is_imx8mn())
+		imx_tmu_mx8mm_mx8mn_init(dev);
+	else if (is_imx8mp())
+		imx_tmu_mx8mp_init(dev);
+	else
+		dev_err(dev, "Unsupported SoC, TMU calibration not loaded!\n");
 }
 
 static void imx_tmu_init(struct udevice *dev)
@@ -279,7 +370,7 @@ static void imx_tmu_init(struct udevice *dev)
 		writel(TMTMIR_DEFAULT, &pdata->regs->regs_v1.tmtmir);
 	}
 
-	imx_tmu_arch_init((void *)pdata->regs);
+	imx_tmu_arch_init(dev);
 }
 
 static int imx_tmu_enable_msite(struct udevice *dev)