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-rw-r--r--drivers/remoteproc/Kconfig10
-rw-r--r--drivers/remoteproc/Makefile1
-rw-r--r--drivers/remoteproc/ti_power_proc.c180
3 files changed, 191 insertions, 0 deletions
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index 437224b..d0b76be 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -21,4 +21,14 @@ config REMOTEPROC_SANDBOX
help
Say 'y' here to add support for test processor which does dummy
operations for sandbox platform.
+
+config REMOTEPROC_TI_POWER
+ bool "Support for TI Power processor"
+ select REMOTEPROC
+ depends on DM
+ depends on ARCH_KEYSTONE
+ depends on OF_CONTROL
+ help
+ Say 'y' here to add support for TI power processors such as those
+ found on certain TI keystone and OMAP generation SoCs.
endmenu
diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
index 720aa6e..65fc061 100644
--- a/drivers/remoteproc/Makefile
+++ b/drivers/remoteproc/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_REMOTEPROC) += rproc-uclass.o
# Remote proc drivers - Please keep this list alphabetically sorted.
obj-$(CONFIG_REMOTEPROC_SANDBOX) += sandbox_testproc.o
+obj-$(CONFIG_REMOTEPROC_TI_POWER) += ti_power_proc.o
diff --git a/drivers/remoteproc/ti_power_proc.c b/drivers/remoteproc/ti_power_proc.c
new file mode 100644
index 0000000..76ac3be
--- /dev/null
+++ b/drivers/remoteproc/ti_power_proc.c
@@ -0,0 +1,180 @@
+/*
+ * (C) Copyright 2015-2016
+ * Texas Instruments Incorporated - http://www.ti.com/
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#define pr_fmt(fmt) "%s: " fmt, __func__
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <remoteproc.h>
+#include <mach/psc_defs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/**
+ * struct ti_powerproc_privdata - power processor private data
+ * @loadaddr: base address for loading the power processor
+ * @psc_module: psc module address.
+ */
+struct ti_powerproc_privdata {
+ phys_addr_t loadaddr;
+ u32 psc_module;
+};
+
+/**
+ * ti_of_to_priv() - generate private data from device tree
+ * @dev: corresponding ti remote processor device
+ * @priv: pointer to driver specific private data
+ *
+ * Return: 0 if all went ok, else corresponding -ve error
+ */
+static int ti_of_to_priv(struct udevice *dev,
+ struct ti_powerproc_privdata *priv)
+{
+ int node = dev->of_offset;
+ const void *blob = gd->fdt_blob;
+ int tmp;
+
+ if (!blob) {
+ debug("'%s' no dt?\n", dev->name);
+ return -EINVAL;
+ }
+
+ priv->loadaddr = fdtdec_get_addr(blob, node, "reg");
+ if (priv->loadaddr == FDT_ADDR_T_NONE) {
+ debug("'%s': no 'reg' property\n", dev->name);
+ return -EINVAL;
+ }
+
+ tmp = fdtdec_get_int(blob, node, "ti,lpsc_module", -EINVAL);
+ if (tmp < 0) {
+ debug("'%s': no 'ti,lpsc_module' property\n", dev->name);
+ return tmp;
+ }
+ priv->psc_module = tmp;
+
+ return 0;
+}
+
+/**
+ * ti_powerproc_probe() - Basic probe
+ * @dev: corresponding ti remote processor device
+ *
+ * Return: 0 if all went ok, else corresponding -ve error
+ */
+static int ti_powerproc_probe(struct udevice *dev)
+{
+ struct dm_rproc_uclass_pdata *uc_pdata;
+ struct ti_powerproc_privdata *priv;
+ int ret;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ priv = dev_get_priv(dev);
+
+ ret = ti_of_to_priv(dev, priv);
+
+ debug("%s probed with slave_addr=0x%08lX module=%d(%d)\n",
+ uc_pdata->name, priv->loadaddr, priv->psc_module, ret);
+
+ return ret;
+}
+
+/**
+ * ti_powerproc_load() - Loadup the TI remote processor
+ * @dev: corresponding ti remote processor device
+ * @addr: Address in memory where image binary is stored
+ * @size: Size in bytes of the image binary
+ *
+ * Return: 0 if all went ok, else corresponding -ve error
+ */
+static int ti_powerproc_load(struct udevice *dev, ulong addr, ulong size)
+{
+ struct dm_rproc_uclass_pdata *uc_pdata;
+ struct ti_powerproc_privdata *priv;
+ int ret;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata) {
+ debug("%s: no uc pdata!\n", dev->name);
+ return -EINVAL;
+ }
+
+ priv = dev_get_priv(dev);
+ ret = psc_module_keep_in_reset_enabled(priv->psc_module, false);
+ if (ret) {
+ debug("%s Unable to disable module '%d'(ret=%d)\n",
+ uc_pdata->name, priv->psc_module, ret);
+ return ret;
+ }
+
+ debug("%s: Loading binary from 0x%08lX, size 0x%08lX to 0x%08lX\n",
+ uc_pdata->name, addr, size, priv->loadaddr);
+
+ memcpy((void *)priv->loadaddr, (void *)addr, size);
+
+ debug("%s: Complete!\n", uc_pdata->name);
+ return 0;
+}
+
+/**
+ * ti_powerproc_start() - (replace: short desc)
+ * @dev: corresponding ti remote processor device
+ *
+ * Return: 0 if all went ok, else corresponding -ve error
+ */
+static int ti_powerproc_start(struct udevice *dev)
+{
+ struct dm_rproc_uclass_pdata *uc_pdata;
+ struct ti_powerproc_privdata *priv;
+ int ret;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata) {
+ debug("%s: no uc pdata!\n", dev->name);
+ return -EINVAL;
+ }
+
+ priv = dev_get_priv(dev);
+ ret = psc_disable_module(priv->psc_module);
+ if (ret) {
+ debug("%s Unable to disable module '%d'(ret=%d)\n",
+ uc_pdata->name, priv->psc_module, ret);
+ return ret;
+ }
+
+ ret = psc_module_release_from_reset(priv->psc_module);
+ if (ret) {
+ debug("%s Failed to wait for module '%d'(ret=%d)\n",
+ uc_pdata->name, priv->psc_module, ret);
+ return ret;
+ }
+ ret = psc_enable_module(priv->psc_module);
+ if (ret) {
+ debug("%s Unable to disable module '%d'(ret=%d)\n",
+ uc_pdata->name, priv->psc_module, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct dm_rproc_ops ti_powerproc_ops = {
+ .load = ti_powerproc_load,
+ .start = ti_powerproc_start,
+};
+
+static const struct udevice_id ti_powerproc_ids[] = {
+ {.compatible = "ti,power-processor"},
+ {}
+};
+
+U_BOOT_DRIVER(ti_powerproc) = {
+ .name = "ti_power_proc",
+ .of_match = ti_powerproc_ids,
+ .id = UCLASS_REMOTEPROC,
+ .ops = &ti_powerproc_ops,
+ .probe = ti_powerproc_probe,
+ .priv_auto_alloc_size = sizeof(struct ti_powerproc_privdata),
+};