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-rw-r--r--arch/arm/mach-omap2/board-n8x0.c4
-rw-r--r--arch/arm/mach-omap2/pdata-quirks.c40
-rw-r--r--drivers/bus/ti-sysc.c96
-rw-r--r--include/linux/platform_data/ti-sysc.h49
4 files changed, 172 insertions, 17 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/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 1cca66ad68b5..eea82c31ee77 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -24,6 +24,7 @@
#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/pwm_omap_dmtimer.h>
#include <linux/platform_data/media/ir-rx51.h>
@@ -455,6 +456,42 @@ 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,
+ .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))
@@ -545,7 +582,7 @@ static struct pdata_init auxdata_quirks[] __initdata = {
struct omap_sr_data __maybe_unused omap_sr_pdata[OMAP_SR_NR];
-static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
+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),
@@ -603,6 +640,7 @@ 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/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index fc9aac3d4d02..50fcb04e8179 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -25,13 +25,6 @@
#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 {
@@ -70,6 +63,7 @@ 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;
@@ -494,6 +488,7 @@ static void sysc_show_registers(struct sysc *ddata)
bufp += sysc_show_reg(ddata, bufp, i);
bufp += sysc_show_rev(bufp, ddata);
+ bufp += sysc_show_rev(bufp, ddata);
dev_dbg(ddata->dev, "%llx:%x%s\n",
ddata->module_pa, ddata->module_size,
@@ -502,33 +497,70 @@ 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;
@@ -537,7 +569,10 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev)
return error;
}
- return 0;
+awake:
+ ddata->enabled = true;
+
+ return error;
}
#ifdef CONFIG_PM_SLEEP
@@ -1007,6 +1042,33 @@ 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;
@@ -1034,6 +1096,7 @@ static void ti_sysc_idle(struct work_struct *work)
static int sysc_probe(struct platform_device *pdev)
{
+ struct ti_sysc_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct sysc *ddata;
int error;
@@ -1072,6 +1135,10 @@ 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);
@@ -1089,7 +1156,8 @@ static int sysc_probe(struct platform_device *pdev)
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;
diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
index 1be356330b96..4176cb90e195 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
@@ -83,4 +87,49 @@ 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__ */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-16 16:44:10 +0200