1 files changed, 417 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 34156ec..e7d23e20 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -145,6 +145,8 @@
 
 #include <linux/platform_data/ti-sysc.h>
 
+#include <dt-bindings/bus/ti-sysc.h>
+
 #include <asm/system_misc.h>
 
 #include "clock.h"
@@ -2498,7 +2500,7 @@ static void __init _setup_postsetup(struct omap_hwmod *oh)
  * affects the IP block hardware, or system integration hardware
  * associated with the IP block.  Returns 0.
  */
-static int __init _setup(struct omap_hwmod *oh, void *data)
+static int _setup(struct omap_hwmod *oh, void *data)
 {
 	if (oh->_state != _HWMOD_STATE_INITIALIZED)
 		return 0;
@@ -3060,6 +3062,414 @@ int __init omap_hwmod_setup_one(const char *oh_name)
 	return 0;
 }
 
+static void omap_hwmod_check_one(struct device *dev,
+				 const char *name, s8 v1, u8 v2)
+{
+	if (v1 < 0)
+		return;
+
+	if (v1 != v2)
+		dev_warn(dev, "%s %d != %d\n", name, v1, v2);
+}
+
+/**
+ * omap_hwmod_check_sysc - check sysc against platform sysc
+ * @dev: struct device
+ * @data: module data
+ * @sysc_fields: new sysc configuration
+ */
+static int omap_hwmod_check_sysc(struct device *dev,
+				 const struct ti_sysc_module_data *data,
+				 struct sysc_regbits *sysc_fields)
+{
+	const struct sysc_regbits *regbits = data->cap->regbits;
+
+	omap_hwmod_check_one(dev, "dmadisable_shift",
+			     regbits->dmadisable_shift,
+			     sysc_fields->dmadisable_shift);
+	omap_hwmod_check_one(dev, "midle_shift",
+			     regbits->midle_shift,
+			     sysc_fields->midle_shift);
+	omap_hwmod_check_one(dev, "sidle_shift",
+			     regbits->sidle_shift,
+			     sysc_fields->sidle_shift);
+	omap_hwmod_check_one(dev, "clkact_shift",
+			     regbits->clkact_shift,
+			     sysc_fields->clkact_shift);
+	omap_hwmod_check_one(dev, "enwkup_shift",
+			     regbits->enwkup_shift,
+			     sysc_fields->enwkup_shift);
+	omap_hwmod_check_one(dev, "srst_shift",
+			     regbits->srst_shift,
+			     sysc_fields->srst_shift);
+	omap_hwmod_check_one(dev, "autoidle_shift",
+			     regbits->autoidle_shift,
+			     sysc_fields->autoidle_shift);
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_init_regbits - init sysconfig specific register bits
+ * @dev: struct device
+ * @data: module data
+ * @sysc_fields: new sysc configuration
+ */
+static int omap_hwmod_init_regbits(struct device *dev,
+				   const struct ti_sysc_module_data *data,
+				   struct sysc_regbits **sysc_fields)
+{
+	*sysc_fields = NULL;
+
+	switch (data->cap->type) {
+	case TI_SYSC_OMAP2:
+	case TI_SYSC_OMAP2_TIMER:
+		*sysc_fields = &omap_hwmod_sysc_type1;
+		break;
+	case TI_SYSC_OMAP3_SHAM:
+		*sysc_fields = &omap3_sham_sysc_fields;
+		break;
+	case TI_SYSC_OMAP3_AES:
+		*sysc_fields = &omap3xxx_aes_sysc_fields;
+		break;
+	case TI_SYSC_OMAP4:
+	case TI_SYSC_OMAP4_TIMER:
+		*sysc_fields = &omap_hwmod_sysc_type2;
+		break;
+	case TI_SYSC_OMAP4_SIMPLE:
+		*sysc_fields = &omap_hwmod_sysc_type3;
+		break;
+	case TI_SYSC_OMAP34XX_SR:
+		*sysc_fields = &omap34xx_sr_sysc_fields;
+		break;
+	case TI_SYSC_OMAP36XX_SR:
+		*sysc_fields = &omap36xx_sr_sysc_fields;
+		break;
+	case TI_SYSC_OMAP4_SR:
+		*sysc_fields = &omap36xx_sr_sysc_fields;
+		break;
+	case TI_SYSC_OMAP4_MCASP:
+		*sysc_fields = &omap_hwmod_sysc_type_mcasp;
+		break;
+	case TI_SYSC_OMAP4_USB_HOST_FS:
+		*sysc_fields = &omap_hwmod_sysc_type_usb_host_fs;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return omap_hwmod_check_sysc(dev, data, *sysc_fields);
+}
+
+/**
+ * omap_hwmod_init_reg_offs - initialize sysconfig register offsets
+ * @dev: struct device
+ * @data: module data
+ * @rev_offs: revision register offset
+ * @sysc_offs: sysc register offset
+ * @syss_offs: syss register offset
+ */
+int omap_hwmod_init_reg_offs(struct device *dev,
+			     const struct ti_sysc_module_data *data,
+			     u32 *rev_offs, u32 *sysc_offs, u32 *syss_offs)
+{
+	*rev_offs = 0;
+	*sysc_offs = 0;
+	*syss_offs = 0;
+
+	if (data->offsets[SYSC_REVISION] > 0)
+		*rev_offs = data->offsets[SYSC_REVISION];
+
+	if (data->offsets[SYSC_SYSCONFIG] > 0)
+		*sysc_offs = data->offsets[SYSC_SYSCONFIG];
+
+	if (data->offsets[SYSC_SYSSTATUS] > 0)
+		*syss_offs = data->offsets[SYSC_SYSSTATUS];
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_init_sysc_flags - initialize sysconfig features
+ * @dev: struct device
+ * @data: module data
+ * @sysc_flags: module configuration
+ */
+int omap_hwmod_init_sysc_flags(struct device *dev,
+			       const struct ti_sysc_module_data *data,
+			       u32 *sysc_flags)
+{
+	*sysc_flags = 0;
+
+	switch (data->cap->type) {
+	case TI_SYSC_OMAP2:
+	case TI_SYSC_OMAP2_TIMER:
+		/* See SYSC_OMAP2_* in include/dt-bindings/bus/ti-sysc.h */
+		if (data->cfg->sysc_val & SYSC_OMAP2_CLOCKACTIVITY)
+			*sysc_flags |= SYSC_HAS_CLOCKACTIVITY;
+		if (data->cfg->sysc_val & SYSC_OMAP2_EMUFREE)
+			*sysc_flags |= SYSC_HAS_EMUFREE;
+		if (data->cfg->sysc_val & SYSC_OMAP2_ENAWAKEUP)
+			*sysc_flags |= SYSC_HAS_ENAWAKEUP;
+		if (data->cfg->sysc_val & SYSC_OMAP2_SOFTRESET)
+			*sysc_flags |= SYSC_HAS_SOFTRESET;
+		if (data->cfg->sysc_val & SYSC_OMAP2_AUTOIDLE)
+			*sysc_flags |= SYSC_HAS_AUTOIDLE;
+		break;
+	case TI_SYSC_OMAP4:
+	case TI_SYSC_OMAP4_TIMER:
+		/* See SYSC_OMAP4_* in include/dt-bindings/bus/ti-sysc.h */
+		if (data->cfg->sysc_val & SYSC_OMAP4_DMADISABLE)
+			*sysc_flags |= SYSC_HAS_DMADISABLE;
+		if (data->cfg->sysc_val & SYSC_OMAP4_FREEEMU)
+			*sysc_flags |= SYSC_HAS_EMUFREE;
+		if (data->cfg->sysc_val & SYSC_OMAP4_SOFTRESET)
+			*sysc_flags |= SYSC_HAS_SOFTRESET;
+		break;
+	case TI_SYSC_OMAP34XX_SR:
+	case TI_SYSC_OMAP36XX_SR:
+		/* See SYSC_OMAP3_SR_* in include/dt-bindings/bus/ti-sysc.h */
+		if (data->cfg->sysc_val & SYSC_OMAP3_SR_ENAWAKEUP)
+			*sysc_flags |= SYSC_HAS_ENAWAKEUP;
+		break;
+	default:
+		if (data->cap->regbits->emufree_shift >= 0)
+			*sysc_flags |= SYSC_HAS_EMUFREE;
+		if (data->cap->regbits->enwkup_shift >= 0)
+			*sysc_flags |= SYSC_HAS_ENAWAKEUP;
+		if (data->cap->regbits->srst_shift >= 0)
+			*sysc_flags |= SYSC_HAS_SOFTRESET;
+		if (data->cap->regbits->autoidle_shift >= 0)
+			*sysc_flags |= SYSC_HAS_AUTOIDLE;
+		break;
+	}
+
+	if (data->cap->regbits->midle_shift >= 0 &&
+	    data->cfg->midlemodes)
+		*sysc_flags |= SYSC_HAS_MIDLEMODE;
+
+	if (data->cap->regbits->sidle_shift >= 0 &&
+	    data->cfg->sidlemodes)
+		*sysc_flags |= SYSC_HAS_SIDLEMODE;
+
+	if (data->cfg->quirks & SYSC_QUIRK_UNCACHED)
+		*sysc_flags |= SYSC_NO_CACHE;
+	if (data->cfg->quirks & SYSC_QUIRK_RESET_STATUS)
+		*sysc_flags |= SYSC_HAS_RESET_STATUS;
+
+	if (data->cfg->syss_mask & 1)
+		*sysc_flags |= SYSS_HAS_RESET_STATUS;
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_init_idlemodes - initialize module idle modes
+ * @dev: struct device
+ * @data: module data
+ * @idlemodes: module supported idle modes
+ */
+int omap_hwmod_init_idlemodes(struct device *dev,
+			      const struct ti_sysc_module_data *data,
+			      u32 *idlemodes)
+{
+	*idlemodes = 0;
+
+	if (data->cfg->midlemodes & BIT(SYSC_IDLE_FORCE))
+		*idlemodes |= MSTANDBY_FORCE;
+	if (data->cfg->midlemodes & BIT(SYSC_IDLE_NO))
+		*idlemodes |= MSTANDBY_NO;
+	if (data->cfg->midlemodes & BIT(SYSC_IDLE_SMART))
+		*idlemodes |= MSTANDBY_SMART;
+	if (data->cfg->midlemodes & BIT(SYSC_IDLE_SMART_WKUP))
+		*idlemodes |= MSTANDBY_SMART_WKUP;
+
+	if (data->cfg->sidlemodes & BIT(SYSC_IDLE_FORCE))
+		*idlemodes |= SIDLE_FORCE;
+	if (data->cfg->sidlemodes & BIT(SYSC_IDLE_NO))
+		*idlemodes |= SIDLE_NO;
+	if (data->cfg->sidlemodes & BIT(SYSC_IDLE_SMART))
+		*idlemodes |= SIDLE_SMART;
+	if (data->cfg->sidlemodes & BIT(SYSC_IDLE_SMART_WKUP))
+		*idlemodes |= SIDLE_SMART_WKUP;
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_check_module - check new module against platform data
+ * @dev: struct device
+ * @oh: module
+ * @data: new module data
+ * @sysc_fields: sysc register bits
+ * @rev_offs: revision register offset
+ * @sysc_offs: sysconfig register offset
+ * @syss_offs: sysstatus register offset
+ * @sysc_flags: sysc specific flags
+ * @idlemodes: sysc supported idlemodes
+ */
+static int omap_hwmod_check_module(struct device *dev,
+				   struct omap_hwmod *oh,
+				   const struct ti_sysc_module_data *data,
+				   struct sysc_regbits *sysc_fields,
+				   u32 rev_offs, u32 sysc_offs,
+				   u32 syss_offs, u32 sysc_flags,
+				   u32 idlemodes)
+{
+	if (!oh->class->sysc)
+		return -ENODEV;
+
+	if (sysc_fields != oh->class->sysc->sysc_fields)
+		dev_warn(dev, "sysc_fields %p != %p\n", sysc_fields,
+			 oh->class->sysc->sysc_fields);
+
+	if (rev_offs != oh->class->sysc->rev_offs)
+		dev_warn(dev, "rev_offs %08x != %08x\n", rev_offs,
+			 oh->class->sysc->rev_offs);
+	if (sysc_offs != oh->class->sysc->sysc_offs)
+		dev_warn(dev, "sysc_offs %08x != %08x\n", sysc_offs,
+			 oh->class->sysc->sysc_offs);
+	if (syss_offs != oh->class->sysc->syss_offs)
+		dev_warn(dev, "syss_offs %08x != %08x\n", syss_offs,
+			 oh->class->sysc->syss_offs);
+
+	if (sysc_flags != oh->class->sysc->sysc_flags)
+		dev_warn(dev, "sysc_flags %08x != %08x\n", sysc_flags,
+			 oh->class->sysc->sysc_flags);
+
+	if (idlemodes != oh->class->sysc->idlemodes)
+		dev_warn(dev, "idlemodes %08x != %08x\n", idlemodes,
+			 oh->class->sysc->idlemodes);
+
+	if (data->cfg->srst_udelay != oh->class->sysc->srst_udelay)
+		dev_warn(dev, "srst_udelay %i != %i\n",
+			 data->cfg->srst_udelay,
+			 oh->class->sysc->srst_udelay);
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_allocate_module - allocate new module
+ * @dev: struct device
+ * @oh: module
+ * @sysc_fields: sysc register bits
+ * @rev_offs: revision register offset
+ * @sysc_offs: sysconfig register offset
+ * @syss_offs: sysstatus register offset
+ * @sysc_flags: sysc specific flags
+ * @idlemodes: sysc supported idlemodes
+ *
+ * Note that the allocations here cannot use devm as ti-sysc can rebind.
+ */
+int omap_hwmod_allocate_module(struct device *dev, struct omap_hwmod *oh,
+			       const struct ti_sysc_module_data *data,
+			       struct sysc_regbits *sysc_fields,
+			       u32 rev_offs, u32 sysc_offs, u32 syss_offs,
+			       u32 sysc_flags, u32 idlemodes)
+{
+	struct omap_hwmod_class_sysconfig *sysc;
+	struct omap_hwmod_class *class;
+	void __iomem *regs = NULL;
+	unsigned long flags;
+
+	sysc = kzalloc(sizeof(*sysc), GFP_KERNEL);
+	if (!sysc)
+		return -ENOMEM;
+
+	sysc->sysc_fields = sysc_fields;
+	sysc->rev_offs = rev_offs;
+	sysc->sysc_offs = sysc_offs;
+	sysc->syss_offs = syss_offs;
+	sysc->sysc_flags = sysc_flags;
+	sysc->idlemodes = idlemodes;
+	sysc->srst_udelay = data->cfg->srst_udelay;
+
+	if (!oh->_mpu_rt_va) {
+		regs = ioremap(data->module_pa,
+			       data->module_size);
+		if (!regs)
+			return -ENOMEM;
+	}
+
+	/*
+	 * We need new oh->class as the other devices in the same class
+	 * may not yet have ioremapped their registers.
+	 */
+	class = kmemdup(oh->class, sizeof(*oh->class), GFP_KERNEL);
+	if (!class)
+		return -ENOMEM;
+
+	class->sysc = sysc;
+
+	spin_lock_irqsave(&oh->_lock, flags);
+	if (regs)
+		oh->_mpu_rt_va = regs;
+	oh->class = class;
+	oh->_state = _HWMOD_STATE_INITIALIZED;
+	_setup(oh, NULL);
+	spin_unlock_irqrestore(&oh->_lock, flags);
+
+	return 0;
+}
+
+/**
+ * omap_hwmod_init_module - initialize new module
+ * @dev: struct device
+ * @data: module data
+ * @cookie: cookie for the caller to use for later calls
+ */
+int omap_hwmod_init_module(struct device *dev,
+			   const struct ti_sysc_module_data *data,
+			   struct ti_sysc_cookie *cookie)
+{
+	struct omap_hwmod *oh;
+	struct sysc_regbits *sysc_fields;
+	u32 rev_offs, sysc_offs, syss_offs, sysc_flags, idlemodes;
+	int error;
+
+	if (!dev || !data)
+		return -EINVAL;
+
+	oh = _lookup(data->name);
+	if (!oh)
+		return -ENODEV;
+
+	cookie->data = oh;
+
+	error = omap_hwmod_init_regbits(dev, data, &sysc_fields);
+	if (error)
+		return error;
+
+	error = omap_hwmod_init_reg_offs(dev, data, &rev_offs,
+					 &sysc_offs, &syss_offs);
+	if (error)
+		return error;
+
+	error = omap_hwmod_init_sysc_flags(dev, data, &sysc_flags);
+	if (error)
+		return error;
+
+	error = omap_hwmod_init_idlemodes(dev, data, &idlemodes);
+	if (error)
+		return error;
+
+	if (data->cfg->quirks & SYSC_QUIRK_NO_IDLE_ON_INIT)
+		oh->flags |= HWMOD_INIT_NO_IDLE;
+	if (data->cfg->quirks & SYSC_QUIRK_NO_RESET_ON_INIT)
+		oh->flags |= HWMOD_INIT_NO_RESET;
+
+	error = omap_hwmod_check_module(dev, oh, data, sysc_fields,
+					rev_offs, sysc_offs, syss_offs,
+					sysc_flags, idlemodes);
+	if (!error)
+		return error;
+
+	return omap_hwmod_allocate_module(dev, oh, data, sysc_fields,
+					  rev_offs, sysc_offs, syss_offs,
+					  sysc_flags, idlemodes);
+}
+
 /**
  * omap_hwmod_setup_earlycon_flags - set up flags for early console
  *
@@ -3082,6 +3492,12 @@ static void __init omap_hwmod_setup_earlycon_flags(void)
 			if (np) {
 				uart = of_get_property(np, "ti,hwmods", NULL);
 				oh = omap_hwmod_lookup(uart);
+				if (!oh) {
+					uart = of_get_property(np->parent,
+							       "ti,hwmods",
+							       NULL);
+					oh = omap_hwmod_lookup(uart);
+				}
 				if (oh)
 					oh->flags |= DEBUG_OMAPUART_FLAGS;
 			}