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-rw-r--r--arch/arm/mach-omap2/board-n8x0.c4
-rw-r--r--arch/arm/mach-omap2/omap_device.c5
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c418
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.h7
-rw-r--r--arch/arm/mach-omap2/pdata-quirks.c54
-rw-r--r--arch/arm/mach-omap2/sr_device.c27
-rw-r--r--drivers/bus/ti-sysc.c526
-rw-r--r--drivers/power/avs/smartreflex.c41
-rw-r--r--include/linux/platform_data/ti-sysc.h50
-rw-r--r--include/linux/power/smartreflex.h10
10 files changed, 1086 insertions, 56 deletions
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index 20f25539d572..75bc18646df6 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -566,11 +566,11 @@ static int n8x0_menelaus_late_init(struct device *dev)
}
#endif
-struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
+struct menelaus_platform_data n8x0_menelaus_platform_data = {
.late_init = n8x0_menelaus_late_init,
};
-struct aic3x_pdata n810_aic33_data __initdata = {
+struct aic3x_pdata n810_aic33_data = {
.gpio_reset = 118,
};
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index f0388058b7da..3b829a50d1db 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -140,6 +140,7 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
struct omap_device *od;
struct omap_hwmod *oh;
struct device_node *node = pdev->dev.of_node;
+ struct resource res;
const char *oh_name;
int oh_cnt, i, ret = 0;
bool device_active = false;
@@ -150,6 +151,10 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
return -ENODEV;
}
+ /* Use ti-sysc driver instead of omap_device? */
+ if (!omap_hwmod_parse_module_range(NULL, node, &res))
+ return -ENODEV;
+
hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
if (!hwmods) {
ret = -ENOMEM;
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 34156eca8e23..e7d23e200ecc 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;
}
diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
index 0b8e19f40402..c7122abbf977 100644
--- a/arch/arm/mach-omap2/omap_hwmod.h
+++ b/arch/arm/mach-omap2/omap_hwmod.h
@@ -620,6 +620,13 @@ int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
struct device_node *np,
struct resource *res);
+struct ti_sysc_module_data;
+struct ti_sysc_cookie;
+
+int omap_hwmod_init_module(struct device *dev,
+ const struct ti_sysc_module_data *data,
+ struct ti_sysc_cookie *cookie);
+
int omap_hwmod_enable(struct omap_hwmod *oh);
int omap_hwmod_idle(struct omap_hwmod *oh);
int omap_hwmod_shutdown(struct omap_hwmod *oh);
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index e7d7fc7ddaa2..6459816c2879 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -17,12 +17,14 @@
#include <linux/wl12xx.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
+#include <linux/power/smartreflex.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/platform_data/pinctrl-single.h>
#include <linux/platform_data/hsmmc-omap.h>
#include <linux/platform_data/iommu-omap.h>
+#include <linux/platform_data/ti-sysc.h>
#include <linux/platform_data/wkup_m3.h>
#include <linux/platform_data/media/ir-rx51.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
@@ -452,6 +454,43 @@ static void __init dra7x_evm_mmc_quirk(void)
}
#endif
+static int ti_sysc_enable_module(struct device *dev,
+ const struct ti_sysc_cookie *cookie)
+{
+ if (!cookie->data)
+ return -EINVAL;
+
+ return omap_hwmod_enable(cookie->data);
+}
+
+static int ti_sysc_idle_module(struct device *dev,
+ const struct ti_sysc_cookie *cookie)
+{
+ if (!cookie->data)
+ return -EINVAL;
+
+ return omap_hwmod_idle(cookie->data);
+}
+
+static int ti_sysc_shutdown_module(struct device *dev,
+ const struct ti_sysc_cookie *cookie)
+{
+ if (!cookie->data)
+ return -EINVAL;
+
+ return omap_hwmod_shutdown(cookie->data);
+}
+
+static struct of_dev_auxdata omap_auxdata_lookup[];
+
+static struct ti_sysc_platform_data ti_sysc_pdata = {
+ .auxdata = omap_auxdata_lookup,
+ .init_module = omap_hwmod_init_module,
+ .enable_module = ti_sysc_enable_module,
+ .idle_module = ti_sysc_idle_module,
+ .shutdown_module = ti_sysc_shutdown_module,
+};
+
static struct pcs_pdata pcs_pdata;
void omap_pcs_legacy_init(int irq, void (*rearm)(void))
@@ -513,7 +552,9 @@ static struct pdata_init auxdata_quirks[] __initdata = {
{ /* sentinel */ },
};
-static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
+struct omap_sr_data __maybe_unused omap_sr_pdata[OMAP_SR_NR];
+
+static struct of_dev_auxdata omap_auxdata_lookup[] = {
#ifdef CONFIG_MACH_NOKIA_N8X0
OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
@@ -522,6 +563,10 @@ static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
#ifdef CONFIG_ARCH_OMAP3
OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
&omap3_iommu_pdata),
+ OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000,
+ "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
+ OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000,
+ "480c9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
OF_DEV_AUXDATA("nokia,n900-ir", 0, "n900-ir", &rx51_ir_data),
@@ -548,6 +593,12 @@ static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
&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,
+ "4a0dd000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
+ OF_DEV_AUXDATA("ti,omap4-smartreflex-mpu", 0x4a0d9000,
+ "4a0d9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
#endif
#ifdef CONFIG_SOC_DRA7XX
OF_DEV_AUXDATA("ti,dra7-hsmmc", 0x4809c000, "4809c000.mmc",
@@ -558,6 +609,7 @@ static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
&dra7_hsmmc_data_mmc3),
#endif
/* Common auxdata */
+ OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
{ /* sentinel */ },
};
diff --git a/arch/arm/mach-omap2/sr_device.c b/arch/arm/mach-omap2/sr_device.c
index eef6935e0403..0854ed9ff379 100644
--- a/arch/arm/mach-omap2/sr_device.c
+++ b/arch/arm/mach-omap2/sr_device.c
@@ -89,18 +89,27 @@ static void __init sr_set_nvalues(struct omap_volt_data *volt_data,
sr_data->nvalue_count = j;
}
+extern struct omap_sr_data omap_sr_pdata[];
+
static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
{
- struct omap_sr_data *sr_data;
- struct platform_device *pdev;
+ struct omap_sr_data *sr_data = NULL;
struct omap_volt_data *volt_data;
struct omap_smartreflex_dev_attr *sr_dev_attr;
- char *name = "smartreflex";
static int i;
- sr_data = kzalloc(sizeof(*sr_data), GFP_KERNEL);
- if (!sr_data)
- return -ENOMEM;
+ if (!strncmp(oh->name, "smartreflex_mpu_iva", 20) ||
+ !strncmp(oh->name, "smartreflex_mpu", 16))
+ sr_data = &omap_sr_pdata[OMAP_SR_MPU];
+ else if (!strncmp(oh->name, "smartreflex_core", 17))
+ sr_data = &omap_sr_pdata[OMAP_SR_CORE];
+ else if (!strncmp(oh->name, "smartreflex_iva", 16))
+ sr_data = &omap_sr_pdata[OMAP_SR_IVA];
+
+ if (!sr_data) {
+ pr_err("%s: Unknown instance %s\n", __func__, oh->name);
+ return -EINVAL;
+ }
sr_dev_attr = (struct omap_smartreflex_dev_attr *)oh->dev_attr;
if (!sr_dev_attr || !sr_dev_attr->sensor_voltdm_name) {
@@ -145,13 +154,9 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
sr_data->enable_on_init = sr_enable_on_init;
- pdev = omap_device_build(name, i, oh, sr_data, sizeof(*sr_data));
- if (IS_ERR(pdev))
- pr_warn("%s: Could not build omap_device for %s: %s\n",
- __func__, name, oh->name);
exit:
i++;
- kfree(sr_data);
+
return 0;
}
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index cdaeeea7999c..7cd2fd04b212 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -13,22 +13,20 @@
#include <linux/io.h>
#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
+#include <linux/slab.h>
+
#include <linux/platform_data/ti-sysc.h>
#include <dt-bindings/bus/ti-sysc.h>
-enum sysc_registers {
- SYSC_REVISION,
- SYSC_SYSCONFIG,
- SYSC_SYSSTATUS,
- SYSC_MAX_REGS,
-};
-
static const char * const reg_names[] = { "rev", "sysc", "syss", };
enum sysc_clocks {
@@ -55,6 +53,7 @@ static const char * const clock_names[] = { "fck", "ick", };
* @cfg: interconnect target module configuration
* @name: name if available
* @revision: interconnect target module revision
+ * @needs_resume: runtime resume needed on resume from suspend
*/
struct sysc {
struct device *dev;
@@ -66,8 +65,13 @@ struct sysc {
const char *legacy_mode;
const struct sysc_capabilities *cap;
struct sysc_config cfg;
+ struct ti_sysc_cookie cookie;
const char *name;
u32 revision;
+ bool enabled;
+ bool needs_resume;
+ bool child_needs_resume;
+ struct delayed_work idle_work;
};
static u32 sysc_read(struct sysc *ddata, int offset)
@@ -136,9 +140,6 @@ static int sysc_get_clocks(struct sysc *ddata)
{
int i, error;
- if (ddata->legacy_mode)
- return 0;
-
for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
error = sysc_get_one_clock(ddata, i);
if (error && error != -ENOENT)
@@ -197,12 +198,53 @@ static int sysc_parse_and_check_child_range(struct sysc *ddata)
ddata->module_pa = of_translate_address(np, ranges++);
ddata->module_size = be32_to_cpup(ranges);
- dev_dbg(ddata->dev, "interconnect target 0x%llx size 0x%x for %pOF\n",
- ddata->module_pa, ddata->module_size, np);
-
return 0;
}
+static struct device_node *stdout_path;
+
+static void sysc_init_stdout_path(struct sysc *ddata)
+{
+ struct device_node *np = NULL;
+ const char *uart;
+
+ if (IS_ERR(stdout_path))
+ return;
+
+ if (stdout_path)
+ return;
+
+ np = of_find_node_by_path("/chosen");
+ if (!np)
+ goto err;
+
+ uart = of_get_property(np, "stdout-path", NULL);
+ if (!uart)
+ goto err;
+
+ np = of_find_node_by_path(uart);
+ if (!np)
+ goto err;
+
+ stdout_path = np;
+
+ return;
+
+err:
+ stdout_path = ERR_PTR(-ENODEV);
+}
+
+static void sysc_check_quirk_stdout(struct sysc *ddata,
+ struct device_node *np)
+{
+ sysc_init_stdout_path(ddata);
+ if (np != stdout_path)
+ return;
+
+ ddata->cfg.quirks |= SYSC_QUIRK_NO_IDLE_ON_INIT |
+ SYSC_QUIRK_NO_RESET_ON_INIT;
+}
+
/**
* sysc_check_one_child - check child configuration
* @ddata: device driver data
@@ -221,6 +263,8 @@ static int sysc_check_one_child(struct sysc *ddata,
if (name)
dev_warn(ddata->dev, "really a child ti,hwmods property?");
+ sysc_check_quirk_stdout(ddata, np);
+
return 0;
}
@@ -246,11 +290,8 @@ static int sysc_check_children(struct sysc *ddata)
*/
static void sysc_check_quirk_16bit(struct sysc *ddata, struct resource *res)
{
- if (resource_size(res) == 8) {
- dev_dbg(ddata->dev,
- "enabling 16-bit and clockactivity quirks\n");
+ if (resource_size(res) == 8)
ddata->cfg.quirks |= SYSC_QUIRK_16BIT | SYSC_QUIRK_USE_CLOCKACT;
- }
}
/**
@@ -276,7 +317,6 @@ static int sysc_parse_one(struct sysc *ddata, enum sysc_registers reg)
res = platform_get_resource_byname(to_platform_device(ddata->dev),
IORESOURCE_MEM, name);
if (!res) {
- dev_dbg(ddata->dev, "has no %s register\n", name);
ddata->offsets[reg] = -ENODEV;
return 0;
@@ -437,6 +477,14 @@ static int sysc_show_reg(struct sysc *ddata,
return sprintf(bufp, ":%x", ddata->offsets[reg]);
}
+static int sysc_show_name(char *bufp, struct sysc *ddata)
+{
+ if (!ddata->name)
+ return 0;
+
+ return sprintf(bufp, ":%s", ddata->name);
+}
+
/**
* sysc_show_registers - show information about interconnect target module
* @ddata: device driver data
@@ -451,6 +499,7 @@ static void sysc_show_registers(struct sysc *ddata)
bufp += sysc_show_reg(ddata, bufp, i);
bufp += sysc_show_rev(bufp, ddata);
+ bufp += sysc_show_name(bufp, ddata);
dev_dbg(ddata->dev, "%llx:%x%s\n",
ddata->module_pa, ddata->module_size,
@@ -459,33 +508,70 @@ static void sysc_show_registers(struct sysc *ddata)
static int __maybe_unused sysc_runtime_suspend(struct device *dev)
{
+ struct ti_sysc_platform_data *pdata;
struct sysc *ddata;
- int i;
+ int error = 0, i;
ddata = dev_get_drvdata(dev);
- if (ddata->legacy_mode)
+ if (!ddata->enabled)
return 0;
+ if (ddata->legacy_mode) {
+ pdata = dev_get_platdata(ddata->dev);
+ if (!pdata)
+ return 0;
+
+ if (!pdata->idle_module)
+ return -ENODEV;
+
+ error = pdata->idle_module(dev, &ddata->cookie);
+ if (error)
+ dev_err(dev, "%s: could not idle: %i\n",
+ __func__, error);
+
+ goto idled;
+ }
+
for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
if (IS_ERR_OR_NULL(ddata->clocks[i]))
continue;
clk_disable(ddata->clocks[i]);
}
- return 0;
+idled:
+ ddata->enabled = false;
+
+ return error;
}
static int __maybe_unused sysc_runtime_resume(struct device *dev)
{
+ struct ti_sysc_platform_data *pdata;
struct sysc *ddata;
- int i, error;
+ int error = 0, i;
ddata = dev_get_drvdata(dev);
- if (ddata->legacy_mode)
+ if (ddata->enabled)
return 0;
+ if (ddata->legacy_mode) {
+ pdata = dev_get_platdata(ddata->dev);
+ if (!pdata)
+ return 0;
+
+ if (!pdata->enable_module)
+ return -ENODEV;
+
+ error = pdata->enable_module(dev, &ddata->cookie);
+ if (error)
+ dev_err(dev, "%s: could not enable: %i\n",
+ __func__, error);
+
+ goto awake;
+ }
+
for (i = 0; i < SYSC_MAX_CLOCKS; i++) {
if (IS_ERR_OR_NULL(ddata->clocks[i]))
continue;
@@ -494,20 +580,136 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev)
return error;
}
+awake:
+ ddata->enabled = true;
+
+ return error;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sysc_suspend(struct device *dev)
+{
+ struct sysc *ddata;
+
+ ddata = dev_get_drvdata(dev);
+
+ if (!ddata->enabled)
+ return 0;
+
+ ddata->needs_resume = true;
+
+ return sysc_runtime_suspend(dev);
+}
+
+static int sysc_resume(struct device *dev)
+{
+ struct sysc *ddata;
+
+ ddata = dev_get_drvdata(dev);
+ if (ddata->needs_resume) {
+ ddata->needs_resume = false;
+
+ return sysc_runtime_resume(dev);
+ }
+
return 0;
}
+#endif
static const struct dev_pm_ops sysc_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sysc_suspend, sysc_resume)
SET_RUNTIME_PM_OPS(sysc_runtime_suspend,
sysc_runtime_resume,
NULL)
};
+/* Module revision register based quirks */
+struct sysc_revision_quirk {
+ const char *name;
+ u32 base;
+ int rev_offset;
+ int sysc_offset;
+ int syss_offset;
+ u32 revision;
+ u32 revision_mask;
+ u32 quirks;
+};
+
+#define SYSC_QUIRK(optname, optbase, optrev, optsysc, optsyss, \
+ optrev_val, optrevmask, optquirkmask) \
+ { \
+ .name = (optname), \
+ .base = (optbase), \
+ .rev_offset = (optrev), \
+ .sysc_offset = (optsysc), \
+ .syss_offset = (optsyss), \
+ .revision = (optrev_val), \
+ .revision_mask = (optrevmask), \
+ .quirks = (optquirkmask), \
+ }
+
+static const struct sysc_revision_quirk sysc_revision_quirks[] = {
+ /* These drivers need to be fixed to not use pm_runtime_irq_safe() */
+ SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000020, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000030, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("sham", 0, 0x100, 0x110, 0x114, 0x40000c03, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("smartreflex", 0, -1, 0x24, -1, 0x00000000, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("smartreflex", 0, -1, 0x38, -1, 0x00000000, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("timer", 0, 0, 0x10, 0x14, 0x00000015, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+ SYSC_QUIRK("uart", 0, 0x50, 0x54, 0x58, 0x00000052, 0xffffffff,
+ SYSC_QUIRK_LEGACY_IDLE),
+};
+
+static void sysc_init_revision_quirks(struct sysc *ddata)
+{
+ const struct sysc_revision_quirk *q;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sysc_revision_quirks); i++) {
+ q = &sysc_revision_quirks[i];
+
+ if (q->base && q->base != ddata->module_pa)
+ continue;
+
+ if (q->rev_offset >= 0 &&
+ q->rev_offset != ddata->offsets[SYSC_REVISION])
+ continue;
+
+ if (q->sysc_offset >= 0 &&
+ q->sysc_offset != ddata->offsets[SYSC_SYSCONFIG])
+ continue;
+
+ if (q->syss_offset >= 0 &&
+ q->syss_offset != ddata->offsets[SYSC_SYSSTATUS])
+ continue;
+
+ if (q->revision == ddata->revision ||
+ (q->revision & q->revision_mask) ==
+ (ddata->revision & q->revision_mask)) {
+ ddata->name = q->name;
+ ddata->cfg.quirks |= q->quirks;
+ }
+ }
+}
+
/* At this point the module is configured enough to read the revision */
static int sysc_init_module(struct sysc *ddata)
{
int error;
+ if (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE_ON_INIT) {
+ ddata->revision = sysc_read_revision(ddata);
+ goto rev_quirks;
+ }
+
error = pm_runtime_get_sync(ddata->dev);
if (error < 0) {
pm_runtime_put_noidle(ddata->dev);
@@ -517,6 +719,9 @@ static int sysc_init_module(struct sysc *ddata)
ddata->revision = sysc_read_revision(ddata);
pm_runtime_put_sync(ddata->dev);
+rev_quirks:
+ sysc_init_revision_quirks(ddata);
+
return 0;
}
@@ -605,6 +810,196 @@ static int sysc_init_syss_mask(struct sysc *ddata)
return 0;
}
+/*
+ * Many child device drivers need to have fck available to get the clock
+ * rate for device internal configuration.
+ */
+static int sysc_child_add_fck(struct sysc *ddata,
+ struct device *child)
+{
+ struct clk *fck;
+ struct clk_lookup *l;
+ const char *name = clock_names[SYSC_FCK];
+
+ if (IS_ERR_OR_NULL(ddata->clocks[SYSC_FCK]))
+ return 0;
+
+ fck = clk_get(child, name);
+ if (!IS_ERR(fck)) {
+ clk_put(fck);
+
+ return -EEXIST;
+ }
+
+ l = clkdev_create(ddata->clocks[SYSC_FCK], name, dev_name(child));
+
+ return l ? 0 : -ENODEV;
+}
+
+static struct device_type sysc_device_type = {
+};
+
+static struct sysc *sysc_child_to_parent(struct device *dev)
+{
+ struct device *parent = dev->parent;
+
+ if (!parent || parent->type != &sysc_device_type)
+ return NULL;
+
+ return dev_get_drvdata(parent);
+}
+
+static int __maybe_unused sysc_child_runtime_suspend(struct device *dev)
+{
+ struct sysc *ddata;
+ int error;
+
+ ddata = sysc_child_to_parent(dev);
+
+ error = pm_generic_runtime_suspend(dev);
+ if (error)
+ return error;
+
+ if (!ddata->enabled)
+ return 0;
+
+ return sysc_runtime_suspend(ddata->dev);
+}
+
+static int __maybe_unused sysc_child_runtime_resume(struct device *dev)
+{
+ struct sysc *ddata;
+ int error;
+
+ ddata = sysc_child_to_parent(dev);
+
+ if (!ddata->enabled) {
+ error = sysc_runtime_resume(ddata->dev);
+ if (error < 0)
+ dev_err(ddata->dev,
+ "%s error: %i\n", __func__, error);
+ }
+
+ return pm_generic_runtime_resume(dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sysc_child_suspend_noirq(struct device *dev)
+{
+ struct sysc *ddata;
+ int error;
+
+ ddata = sysc_child_to_parent(dev);
+
+ error = pm_generic_suspend_noirq(dev);
+ if (error)
+ return error;
+
+ if (!pm_runtime_status_suspended(dev)) {
+ error = pm_generic_runtime_suspend(dev);
+ if (error)
+ return error;
+
+ error = sysc_runtime_suspend(ddata->dev);
+ if (error)
+ return error;
+
+ ddata->child_needs_resume = true;
+ }
+
+ return 0;
+}
+
+static int sysc_child_resume_noirq(struct device *dev)
+{
+ struct sysc *ddata;
+ int error;
+
+ ddata = sysc_child_to_parent(dev);
+
+ if (ddata->child_needs_resume) {
+ ddata->child_needs_resume = false;
+
+ error = sysc_runtime_resume(ddata->dev);
+ if (error)
+ dev_err(ddata->dev,
+ "%s runtime resume error: %i\n",
+ __func__, error);
+
+ error = pm_generic_runtime_resume(dev);
+ if (error)
+ dev_err(ddata->dev,
+ "%s generic runtime resume: %i\n",
+ __func__, error);
+ }
+
+ return pm_generic_resume_noirq(dev);
+}
+#endif
+
+struct dev_pm_domain sysc_child_pm_domain = {
+ .ops = {
+ SET_RUNTIME_PM_OPS(sysc_child_runtime_suspend,
+ sysc_child_runtime_resume,
+ NULL)
+ USE_PLATFORM_PM_SLEEP_OPS
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(sysc_child_suspend_noirq,
+ sysc_child_resume_noirq)
+ }
+};
+
+/**
+ * sysc_legacy_idle_quirk - handle children in omap_device compatible way
+ * @ddata: device driver data
+ * @child: child device driver
+ *
+ * Allow idle for child devices as done with _od_runtime_suspend().
+ * Otherwise many child devices will not idle because of the permanent
+ * parent usecount set in pm_runtime_irq_safe().
+ *
+ * Note that the long term solution is to just modify the child device
+ * drivers to not set pm_runtime_irq_safe() and then this can be just
+ * dropped.
+ */
+static void sysc_legacy_idle_quirk(struct sysc *ddata, struct device *child)
+{
+ if (!ddata->legacy_mode)
+ return;
+
+ if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+ dev_pm_domain_set(child, &sysc_child_pm_domain);
+}
+
+static int sysc_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *device)
+{
+ struct device *dev = device;
+ struct sysc *ddata;
+ int error;
+
+ ddata = sysc_child_to_parent(dev);
+ if (!ddata)
+ return NOTIFY_DONE;
+
+ switch (event) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ error = sysc_child_add_fck(ddata, dev);
+ if (error && error != -EEXIST)
+ dev_warn(ddata->dev, "could not add %s fck: %i\n",
+ dev_name(dev), error);
+ sysc_legacy_idle_quirk(ddata, dev);
+ break;
+ default:
+ break;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block sysc_nb = {
+ .notifier_call = sysc_notifier_call,
+};
+
/* Device tree configured quirks */
struct sysc_dts_quirk {
const char *name;
@@ -797,7 +1192,8 @@ static const struct sysc_capabilities sysc_34xx_sr = {
.type = TI_SYSC_OMAP34XX_SR,
.sysc_mask = SYSC_OMAP2_CLOCKACTIVITY,
.regbits = &sysc_regbits_omap34xx_sr,
- .mod_quirks = SYSC_QUIRK_USE_CLOCKACT | SYSC_QUIRK_UNCACHED,
+ .mod_quirks = SYSC_QUIRK_USE_CLOCKACT | SYSC_QUIRK_UNCACHED |
+ SYSC_QUIRK_LEGACY_IDLE,
};
/*
@@ -818,12 +1214,13 @@ static const struct sysc_capabilities sysc_36xx_sr = {
.type = TI_SYSC_OMAP36XX_SR,
.sysc_mask = SYSC_OMAP3_SR_ENAWAKEUP,
.regbits = &sysc_regbits_omap36xx_sr,
- .mod_quirks = SYSC_QUIRK_UNCACHED,
+ .mod_quirks = SYSC_QUIRK_UNCACHED | SYSC_QUIRK_LEGACY_IDLE,
};
static const struct sysc_capabilities sysc_omap4_sr = {
.type = TI_SYSC_OMAP4_SR,
.regbits = &sysc_regbits_omap36xx_sr,
+ .mod_quirks = SYSC_QUIRK_LEGACY_IDLE,
};
/*
@@ -865,6 +1262,33 @@ static const struct sysc_capabilities sysc_omap4_usb_host_fs = {
.regbits = &sysc_regbits_omap4_usb_host_fs,
};
+static int sysc_init_pdata(struct sysc *ddata)
+{
+ struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
+ struct ti_sysc_module_data mdata;
+ int error = 0;
+
+ if (!pdata || !ddata->legacy_mode)
+ return 0;
+
+ mdata.name = ddata->legacy_mode;
+ mdata.module_pa = ddata->module_pa;
+ mdata.module_size = ddata->module_size;
+ mdata.offsets = ddata->offsets;
+ mdata.nr_offsets = SYSC_MAX_REGS;
+ mdata.cap = ddata->cap;
+ mdata.cfg = &ddata->cfg;
+
+ if (!pdata->init_module)
+ return -ENODEV;
+
+ error = pdata->init_module(ddata->dev, &mdata, &ddata->cookie);
+ if (error == -EEXIST)
+ error = 0;
+
+ return error;
+}
+
static int sysc_init_match(struct sysc *ddata)
{
const struct sysc_capabilities *cap;
@@ -880,8 +1304,19 @@ static int sysc_init_match(struct sysc *ddata)
return 0;
}
+static void ti_sysc_idle(struct work_struct *work)
+{
+ struct sysc *ddata;
+
+ ddata = container_of(work, struct sysc, idle_work.work);
+
+ if (pm_runtime_active(ddata->dev))
+ pm_runtime_put_sync(ddata->dev);
+}
+
static int sysc_probe(struct platform_device *pdev)
{
+ struct ti_sysc_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct sysc *ddata;
int error;
@@ -920,6 +1355,10 @@ static int sysc_probe(struct platform_device *pdev)
if (error)
goto unprepare;
+ error = sysc_init_pdata(ddata);
+ if (error)
+ goto unprepare;
+
pm_runtime_enable(ddata->dev);
error = sysc_init_module(ddata);
@@ -933,22 +1372,28 @@ static int sysc_probe(struct platform_device *pdev)
goto unprepare;
}
- pm_runtime_use_autosuspend(ddata->dev);
-
sysc_show_registers(ddata);
+ ddata->dev->type = &sysc_device_type;
error = of_platform_populate(ddata->dev->of_node,
- NULL, NULL, ddata->dev);
+ NULL, pdata ? pdata->auxdata : NULL,
+ ddata->dev);
if (error)
goto err;
- pm_runtime_mark_last_busy(ddata->dev);
- pm_runtime_put_autosuspend(ddata->dev);
+ INIT_DELAYED_WORK(&ddata->idle_work, ti_sysc_idle);
+
+ /* At least earlycon won't survive without deferred idle */
+ if (ddata->cfg.quirks & (SYSC_QUIRK_NO_IDLE_ON_INIT |
+ SYSC_QUIRK_NO_RESET_ON_INIT)) {
+ schedule_delayed_work(&ddata->idle_work, 3000);
+ } else {
+ pm_runtime_put(&pdev->dev);
+ }
return 0;
err:
- pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
unprepare:
@@ -962,6 +1407,8 @@ static int sysc_remove(struct platform_device *pdev)
struct sysc *ddata = platform_get_drvdata(pdev);
int error;
+ cancel_delayed_work_sync(&ddata->idle_work);
+
error = pm_runtime_get_sync(ddata->dev);
if (error < 0) {
pm_runtime_put_noidle(ddata->dev);
@@ -971,7 +1418,6 @@ static int sysc_remove(struct platform_device *pdev)
of_platform_depopulate(&pdev->dev);
- pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -1008,7 +1454,21 @@ static struct platform_driver sysc_driver = {
.pm = &sysc_pm_ops,
},
};
-module_platform_driver(sysc_driver);
+
+static int __init sysc_init(void)
+{
+ bus_register_notifier(&platform_bus_type, &sysc_nb);
+
+ return platform_driver_register(&sysc_driver);
+}
+module_init(sysc_init);
+
+static void __exit sysc_exit(void)
+{
+ bus_unregister_notifier(&platform_bus_type, &sysc_nb);
+ platform_driver_unregister(&sysc_driver);
+}
+module_exit(sysc_exit);
MODULE_DESCRIPTION("TI sysc interconnect target driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/power/avs/smartreflex.c b/drivers/power/avs/smartreflex.c
index 89bf4d6cb486..cb0237143dbe 100644
--- a/drivers/power/avs/smartreflex.c
+++ b/drivers/power/avs/smartreflex.c
@@ -132,12 +132,16 @@ static void sr_set_clk_length(struct omap_sr *sr)
struct clk *fck;
u32 fclk_speed;
- fck = clk_get(&sr->pdev->dev, "fck");
-
+ /* Try interconnect target module fck first if it already exists */
+ fck = clk_get(sr->pdev->dev.parent, "fck");
if (IS_ERR(fck)) {
- dev_err(&sr->pdev->dev, "%s: unable to get fck for device %s\n",
- __func__, dev_name(&sr->pdev->dev));
- return;
+ fck = clk_get(&sr->pdev->dev, "fck");
+ if (IS_ERR(fck)) {
+ dev_err(&sr->pdev->dev,
+ "%s: unable to get fck for device %s\n",
+ __func__, dev_name(&sr->pdev->dev));
+ return;
+ }
}
fclk_speed = clk_get_rate(fck);
@@ -838,7 +842,7 @@ static int omap_sr_autocomp_store(void *data, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(pm_sr_fops, omap_sr_autocomp_show,
omap_sr_autocomp_store, "%llu\n");
-static int __init omap_sr_probe(struct platform_device *pdev)
+static int omap_sr_probe(struct platform_device *pdev)
{
struct omap_sr *sr_info;
struct omap_sr_data *pdata = pdev->dev.platform_data;
@@ -898,6 +902,12 @@ static int __init omap_sr_probe(struct platform_device *pdev)
list_add(&sr_info->node, &sr_list);
+ ret = pm_runtime_get_sync(&pdev->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&pdev->dev);
+ goto err_list_del;
+ }
+
/*
* Call into late init to do initializations that require
* both sr driver and sr class driver to be initiallized.
@@ -966,12 +976,17 @@ static int __init omap_sr_probe(struct platform_device *pdev)
}
+ pm_runtime_put_sync(&pdev->dev);
+
return ret;
err_debugfs:
debugfs_remove_recursive(sr_info->dbg_dir);
err_list_del:
list_del(&sr_info->node);
+
+ pm_runtime_put_sync(&pdev->dev);
+
return ret;
}
@@ -1025,11 +1040,23 @@ static void omap_sr_shutdown(struct platform_device *pdev)
return;
}
+static const struct of_device_id omap_sr_match[] = {
+ { .compatible = "ti,omap3-smartreflex-core", },
+ { .compatible = "ti,omap3-smartreflex-mpu-iva", },
+ { .compatible = "ti,omap4-smartreflex-core", },
+ { .compatible = "ti,omap4-smartreflex-mpu", },
+ { .compatible = "ti,omap4-smartreflex-iva", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, omap_sr_match);
+
static struct platform_driver smartreflex_driver = {
+ .probe = omap_sr_probe,
.remove = omap_sr_remove,
.shutdown = omap_sr_shutdown,
.driver = {
.name = DRIVER_NAME,
+ .of_match_table = omap_sr_match,
},
};
@@ -1048,7 +1075,7 @@ static int __init sr_init(void)
else
pr_warn("%s: No PMIC hook to init smartreflex\n", __func__);
- ret = platform_driver_probe(&smartreflex_driver, omap_sr_probe);
+ ret = platform_driver_register(&smartreflex_driver);
if (ret) {
pr_err("%s: platform driver register failed for SR\n",
__func__);
diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
index 1be356330b96..80ce28d40832 100644
--- a/include/linux/platform_data/ti-sysc.h
+++ b/include/linux/platform_data/ti-sysc.h
@@ -16,6 +16,10 @@ enum ti_sysc_module_type {
TI_SYSC_OMAP4_USB_HOST_FS,
};
+struct ti_sysc_cookie {
+ void *data;
+};
+
/**
* struct sysc_regbits - TI OCP_SYSCONFIG register field offsets
* @midle_shift: Offset of the midle bit
@@ -41,6 +45,7 @@ struct sysc_regbits {
s8 emufree_shift;
};
+#define SYSC_QUIRK_LEGACY_IDLE BIT(8)
#define SYSC_QUIRK_RESET_STATUS BIT(7)
#define SYSC_QUIRK_NO_IDLE_ON_INIT BIT(6)
#define SYSC_QUIRK_NO_RESET_ON_INIT BIT(5)
@@ -83,4 +88,49 @@ struct sysc_config {
u32 quirks;
};
+enum sysc_registers {
+ SYSC_REVISION,
+ SYSC_SYSCONFIG,
+ SYSC_SYSSTATUS,
+ SYSC_MAX_REGS,
+};
+
+/**
+ * struct ti_sysc_module_data - ti-sysc to hwmod translation data for a module
+ * @name: legacy "ti,hwmods" module name
+ * @module_pa: physical address of the interconnect target module
+ * @module_size: size of the interconnect target module
+ * @offsets: array of register offsets as listed in enum sysc_registers
+ * @nr_offsets: number of registers
+ * @cap: interconnect target module capabilities
+ * @cfg: interconnect target module configuration
+ *
+ * This data is enough to allocate a new struct omap_hwmod_class_sysconfig
+ * based on device tree data parsed by ti-sysc driver.
+ */
+struct ti_sysc_module_data {
+ const char *name;
+ u64 module_pa;
+ u32 module_size;
+ int *offsets;
+ int nr_offsets;
+ const struct sysc_capabilities *cap;
+ struct sysc_config *cfg;
+};
+
+struct device;
+
+struct ti_sysc_platform_data {
+ struct of_dev_auxdata *auxdata;
+ int (*init_module)(struct device *dev,
+ const struct ti_sysc_module_data *data,
+ struct ti_sysc_cookie *cookie);
+ int (*enable_module)(struct device *dev,
+ const struct ti_sysc_cookie *cookie);
+ int (*idle_module)(struct device *dev,
+ const struct ti_sysc_cookie *cookie);
+ int (*shutdown_module)(struct device *dev,
+ const struct ti_sysc_cookie *cookie);
+};
+
#endif /* __TI_SYSC_DATA_H__ */
diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
index d8b187c3925d..7b81dad712de 100644
--- a/include/linux/power/smartreflex.h
+++ b/include/linux/power/smartreflex.h
@@ -143,6 +143,13 @@
#define OMAP3430_SR_ERRWEIGHT 0x04
#define OMAP3430_SR_ERRMAXLIMIT 0x02
+enum sr_instance {
+ OMAP_SR_MPU, /* shared with iva on omap3 */
+ OMAP_SR_CORE,
+ OMAP_SR_IVA,
+ OMAP_SR_NR,
+};
+
struct omap_sr {
char *name;
struct list_head node;
@@ -207,7 +214,6 @@ struct omap_smartreflex_dev_attr {
const char *sensor_voltdm_name;
};
-#ifdef CONFIG_POWER_AVS_OMAP
/*
* The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR.
* The smartreflex class driver should pass the class type.
@@ -290,6 +296,8 @@ struct omap_sr_data {
struct voltagedomain *voltdm;
};
+#ifdef CONFIG_POWER_AVS_OMAP
+
/* Smartreflex module enable/disable interface */
void omap_sr_enable(struct voltagedomain *voltdm);
void omap_sr_disable(struct voltagedomain *voltdm);