Merge tag 'omap-for-v5.6/soc-signed' of...

Merge tag 'omap-for-v5.6/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc

SoC changes for omaps for v5.6 merge window

SoC related changes for omaps that mostly relate to making iommus
to start probing with ti-sysc interconnect target module driver:

- Add missing lcdc clockdomain for am43xx

- Pass auxdata for reset control driver

- Remove old pdata quirks for iommus

- Add workaround for dra7 dsp mstandby errata

- Convert iommu platform code to probe with ti-sysc

- Use sperate iommu auxdata for ipu1

* tag 'omap-for-v5.6/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: use separate IOMMU pdata to fix DRA7 IPU1 boot
  ARM: OMAP2+: omap-iommu.c conversion to ti-sysc
  ARM: OMAP2+: Add workaround for DRA7 DSP MStandby errata i879
  ARM: OMAP4+: remove pdata quirks for omap4+ iommus
  ARM: OMAP2+: pdata-quirks: add PRM data for reset support
  ARM: OMAP2+: am43xx: Add lcdc clockdomain

Link: https://lore.kernel.org/r/pull-1578420398-290837@atomide.comSigned-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-omap2/clockdomains43xx_data.c

@@ -84,6 +84,15 @@ static struct clockdomain l3s_tsc_43xx_clkdm = {
 	.flags		  = CLKDM_CAN_SWSUP,
 };
 
+static struct clockdomain lcdc_43xx_clkdm = {
+	.name		  = "lcdc_clkdm",
+	.pwrdm		  = { .name = "per_pwrdm" },
+	.prcm_partition	  = AM43XX_CM_PARTITION,
+	.cm_inst	  = AM43XX_CM_PER_INST,
+	.clkdm_offs	  = AM43XX_CM_PER_LCDC_CDOFFS,
+	.flags		  = CLKDM_CAN_SWSUP,
+};
+
 static struct clockdomain dss_43xx_clkdm = {
 	.name		  = "dss_clkdm",
 	.pwrdm		  = { .name = "per_pwrdm" },
@@ -173,6 +182,7 @@ static struct clockdomain *clockdomains_am43xx[] __initdata = {
 	&pruss_ocp_43xx_clkdm,
 	&ocpwp_l3_43xx_clkdm,
 	&l3s_tsc_43xx_clkdm,
+	&lcdc_43xx_clkdm,
 	&dss_43xx_clkdm,
 	&l3_aon_43xx_clkdm,
 	&emif_43xx_clkdm,

arch/arm/mach-omap2/omap-iommu.c

@@ -8,36 +8,134 @@
 
 #include <linux/platform_device.h>
 #include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/list.h>
 
-#include "omap_hwmod.h"
-#include "omap_device.h"
+#include "clockdomain.h"
 #include "powerdomain.h"
 
+struct pwrdm_link {
+	struct device *dev;
+	struct powerdomain *pwrdm;
+	struct list_head node;
+};
+
+static DEFINE_SPINLOCK(iommu_lock);
+static struct clockdomain *emu_clkdm;
+static atomic_t emu_count;
+
+static void omap_iommu_dra7_emu_swsup_config(struct platform_device *pdev,
+					     bool enable)
+{
+	struct device_node *np = pdev->dev.of_node;
+	unsigned long flags;
+
+	if (!of_device_is_compatible(np, "ti,dra7-dsp-iommu"))
+		return;
+
+	if (!emu_clkdm) {
+		emu_clkdm = clkdm_lookup("emu_clkdm");
+		if (WARN_ON_ONCE(!emu_clkdm))
+			return;
+	}
+
+	spin_lock_irqsave(&iommu_lock, flags);
+
+	if (enable && (atomic_inc_return(&emu_count) == 1))
+		clkdm_deny_idle(emu_clkdm);
+	else if (!enable && (atomic_dec_return(&emu_count) == 0))
+		clkdm_allow_idle(emu_clkdm);
+
+	spin_unlock_irqrestore(&iommu_lock, flags);
+}
+
+static struct powerdomain *_get_pwrdm(struct device *dev)
+{
+	struct clk *clk;
+	struct clk_hw_omap *hwclk;
+	struct clockdomain *clkdm;
+	struct powerdomain *pwrdm = NULL;
+	struct pwrdm_link *entry;
+	unsigned long flags;
+	static LIST_HEAD(cache);
+
+	spin_lock_irqsave(&iommu_lock, flags);
+
+	list_for_each_entry(entry, &cache, node) {
+		if (entry->dev == dev) {
+			pwrdm = entry->pwrdm;
+			break;
+		}
+	}
+
+	spin_unlock_irqrestore(&iommu_lock, flags);
+
+	if (pwrdm)
+		return pwrdm;
+
+	clk = of_clk_get(dev->of_node->parent, 0);
+	if (!clk) {
+		dev_err(dev, "no fck found\n");
+		return NULL;
+	}
+
+	hwclk = to_clk_hw_omap(__clk_get_hw(clk));
+	clk_put(clk);
+	if (!hwclk || !hwclk->clkdm_name) {
+		dev_err(dev, "no hwclk data\n");
+		return NULL;
+	}
+
+	clkdm = clkdm_lookup(hwclk->clkdm_name);
+	if (!clkdm) {
+		dev_err(dev, "clkdm not found: %s\n", hwclk->clkdm_name);
+		return NULL;
+	}
+
+	pwrdm = clkdm_get_pwrdm(clkdm);
+	if (!pwrdm) {
+		dev_err(dev, "pwrdm not found: %s\n", clkdm->name);
+		return NULL;
+	}
+
+	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+	if (entry) {
+		entry->dev = dev;
+		entry->pwrdm = pwrdm;
+		spin_lock_irqsave(&iommu_lock, flags);
+		list_add(&entry->node, &cache);
+		spin_unlock_irqrestore(&iommu_lock, flags);
+	}
+
+	return pwrdm;
+}
+
 int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
 				    u8 *pwrst)
 {
 	struct powerdomain *pwrdm;
-	struct omap_device *od;
 	u8 next_pwrst;
+	int ret = 0;
 
-	od = to_omap_device(pdev);
-	if (!od)
-		return -ENODEV;
-
-	if (od->hwmods_cnt != 1)
-		return -EINVAL;
-
-	pwrdm = omap_hwmod_get_pwrdm(od->hwmods[0]);
+	pwrdm = _get_pwrdm(&pdev->dev);
 	if (!pwrdm)
-		return -EINVAL;
+		return -ENODEV;
 
-	if (request)
+	if (request) {
 		*pwrst = pwrdm_read_next_pwrst(pwrdm);
+		omap_iommu_dra7_emu_swsup_config(pdev, true);
+	}
 
 	if (*pwrst > PWRDM_POWER_RET)
-		return 0;
+		goto out;
 
 	next_pwrst = request ? PWRDM_POWER_ON : *pwrst;
 
-	return pwrdm_set_next_pwrst(pwrdm, next_pwrst);
+	ret = pwrdm_set_next_pwrst(pwrdm, next_pwrst);
+
+out:
+	if (!request)
+		omap_iommu_dra7_emu_swsup_config(pdev, false);
+
+	return ret;
 }

arch/arm/mach-omap2/pdata-quirks.c

@@ -23,6 +23,7 @@
 #include <linux/platform_data/ti-sysc.h>
 #include <linux/platform_data/wkup_m3.h>
 #include <linux/platform_data/asoc-ti-mcbsp.h>
+#include <linux/platform_data/ti-prm.h>
 
 #include "clockdomain.h"
 #include "common.h"
@@ -42,6 +43,17 @@ struct pdata_init {
 static struct of_dev_auxdata omap_auxdata_lookup[];
 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
 
+#if IS_ENABLED(CONFIG_OMAP_IOMMU)
+int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
+				    u8 *pwrst);
+#else
+static inline int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev,
+						  bool request, u8 *pwrst)
+{
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_MACH_NOKIA_N8X0
 static void __init omap2420_n8x0_legacy_init(void)
 {
@@ -260,16 +272,6 @@ static void __init omap3_pandora_legacy_init(void)
 }
 #endif /* CONFIG_ARCH_OMAP3 */
 
-#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
-static struct iommu_platform_data omap4_iommu_pdata = {
-	.reset_name = "mmu_cache",
-	.assert_reset = omap_device_assert_hardreset,
-	.deassert_reset = omap_device_deassert_hardreset,
-	.device_enable = omap_device_enable,
-	.device_idle = omap_device_idle,
-};
-#endif
-
 #if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
 static struct wkup_m3_platform_data wkup_m3_data = {
 	.reset_name = "wkup_m3",
@@ -285,6 +287,10 @@ static void __init omap5_uevm_legacy_init(void)
 #endif
 
 #ifdef CONFIG_SOC_DRA7XX
+static struct iommu_platform_data dra7_ipu1_dsp_iommu_pdata = {
+	.set_pwrdm_constraint = omap_iommu_set_pwrdm_constraint,
+};
+
 static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc1;
 static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc2;
 static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc3;
@@ -408,6 +414,12 @@ void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 	pcs_pdata.rearm = rearm;
 }
 
+static struct ti_prm_platform_data ti_prm_pdata = {
+	.clkdm_deny_idle = clkdm_deny_idle,
+	.clkdm_allow_idle = clkdm_allow_idle,
+	.clkdm_lookup = clkdm_lookup,
+};
+
 /*
  * GPIOs for TWL are initialized by the I2C bus and need custom
  * handing until DSS has device tree bindings.
@@ -488,10 +500,6 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 		       &wkup_m3_data),
 #endif
 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
-	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
-		       &omap4_iommu_pdata),
-	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
-		       &omap4_iommu_pdata),
 	OF_DEV_AUXDATA("ti,omap4-smartreflex-iva", 0x4a0db000,
 		       "4a0db000.smartreflex", &omap_sr_pdata[OMAP_SR_IVA]),
 	OF_DEV_AUXDATA("ti,omap4-smartreflex-core", 0x4a0dd000,
@@ -506,10 +514,17 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 		       &dra7_hsmmc_data_mmc2),
 	OF_DEV_AUXDATA("ti,dra7-hsmmc", 0x480ad000, "480ad000.mmc",
 		       &dra7_hsmmc_data_mmc3),
+	OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x40d01000, "40d01000.mmu",
+		       &dra7_ipu1_dsp_iommu_pdata),
+	OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x41501000, "41501000.mmu",
+		       &dra7_ipu1_dsp_iommu_pdata),
+	OF_DEV_AUXDATA("ti,dra7-iommu", 0x58882000, "58882000.mmu",
+		       &dra7_ipu1_dsp_iommu_pdata),
 #endif
 	/* Common auxdata */
 	OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
 	OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
+	OF_DEV_AUXDATA("ti,omap-prm-inst", 0, NULL, &ti_prm_pdata),
 	{ /* sentinel */ },
 };
 

arch/arm/mach-omap2/prcm43xx.h

@@ -68,6 +68,7 @@
 #define AM43XX_CM_PER_ICSS_CDOFFS			0x0300
 #define AM43XX_CM_PER_L4LS_CDOFFS			0x0400
 #define AM43XX_CM_PER_EMIF_CDOFFS			0x0700
+#define AM43XX_CM_PER_LCDC_CDOFFS			0x0800
 #define AM43XX_CM_PER_DSS_CDOFFS			0x0a00
 #define AM43XX_CM_PER_CPSW_CDOFFS			0x0b00
 #define AM43XX_CM_PER_OCPWP_L3_CDOFFS			0x0c00