mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
180 lines
4.3 KiB
C
180 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015-2016
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* Texas Instruments Incorporated - http://www.ti.com/
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*/
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#define pr_fmt(fmt) "%s: " fmt, __func__
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <remoteproc.h>
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#include <mach/psc_defs.h>
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* struct ti_powerproc_privdata - power processor private data
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* @loadaddr: base address for loading the power processor
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* @psc_module: psc module address.
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*/
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struct ti_powerproc_privdata {
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phys_addr_t loadaddr;
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u32 psc_module;
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};
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/**
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* ti_of_to_priv() - generate private data from device tree
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* @dev: corresponding ti remote processor device
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* @priv: pointer to driver specific private data
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*
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* Return: 0 if all went ok, else corresponding -ve error
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*/
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static int ti_of_to_priv(struct udevice *dev,
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struct ti_powerproc_privdata *priv)
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{
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int node = dev_of_offset(dev);
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const void *blob = gd->fdt_blob;
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int tmp;
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if (!blob) {
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debug("'%s' no dt?\n", dev->name);
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return -EINVAL;
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}
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priv->loadaddr = fdtdec_get_addr(blob, node, "reg");
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if (priv->loadaddr == FDT_ADDR_T_NONE) {
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debug("'%s': no 'reg' property\n", dev->name);
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return -EINVAL;
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}
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tmp = fdtdec_get_int(blob, node, "ti,lpsc_module", -EINVAL);
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if (tmp < 0) {
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debug("'%s': no 'ti,lpsc_module' property\n", dev->name);
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return tmp;
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}
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priv->psc_module = tmp;
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return 0;
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}
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/**
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* ti_powerproc_probe() - Basic probe
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* @dev: corresponding ti remote processor device
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*
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* Return: 0 if all went ok, else corresponding -ve error
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*/
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static int ti_powerproc_probe(struct udevice *dev)
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{
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struct dm_rproc_uclass_pdata *uc_pdata;
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struct ti_powerproc_privdata *priv;
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int ret;
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uc_pdata = dev_get_uclass_platdata(dev);
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priv = dev_get_priv(dev);
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ret = ti_of_to_priv(dev, priv);
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debug("%s probed with slave_addr=0x%08lX module=%d(%d)\n",
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uc_pdata->name, priv->loadaddr, priv->psc_module, ret);
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return ret;
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}
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/**
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* ti_powerproc_load() - Loadup the TI remote processor
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* @dev: corresponding ti remote processor device
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* @addr: Address in memory where image binary is stored
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* @size: Size in bytes of the image binary
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*
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* Return: 0 if all went ok, else corresponding -ve error
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*/
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static int ti_powerproc_load(struct udevice *dev, ulong addr, ulong size)
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{
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struct dm_rproc_uclass_pdata *uc_pdata;
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struct ti_powerproc_privdata *priv;
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int ret;
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uc_pdata = dev_get_uclass_platdata(dev);
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if (!uc_pdata) {
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debug("%s: no uc pdata!\n", dev->name);
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return -EINVAL;
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}
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priv = dev_get_priv(dev);
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ret = psc_module_keep_in_reset_enabled(priv->psc_module, false);
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if (ret) {
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debug("%s Unable to disable module '%d'(ret=%d)\n",
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uc_pdata->name, priv->psc_module, ret);
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return ret;
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}
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debug("%s: Loading binary from 0x%08lX, size 0x%08lX to 0x%08lX\n",
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uc_pdata->name, addr, size, priv->loadaddr);
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memcpy((void *)priv->loadaddr, (void *)addr, size);
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debug("%s: Complete!\n", uc_pdata->name);
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return 0;
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}
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/**
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* ti_powerproc_start() - (replace: short desc)
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* @dev: corresponding ti remote processor device
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*
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* Return: 0 if all went ok, else corresponding -ve error
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*/
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static int ti_powerproc_start(struct udevice *dev)
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{
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struct dm_rproc_uclass_pdata *uc_pdata;
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struct ti_powerproc_privdata *priv;
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int ret;
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uc_pdata = dev_get_uclass_platdata(dev);
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if (!uc_pdata) {
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debug("%s: no uc pdata!\n", dev->name);
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return -EINVAL;
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}
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priv = dev_get_priv(dev);
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ret = psc_disable_module(priv->psc_module);
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if (ret) {
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debug("%s Unable to disable module '%d'(ret=%d)\n",
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uc_pdata->name, priv->psc_module, ret);
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return ret;
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}
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ret = psc_module_release_from_reset(priv->psc_module);
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if (ret) {
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debug("%s Failed to wait for module '%d'(ret=%d)\n",
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uc_pdata->name, priv->psc_module, ret);
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return ret;
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}
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ret = psc_enable_module(priv->psc_module);
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if (ret) {
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debug("%s Unable to disable module '%d'(ret=%d)\n",
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uc_pdata->name, priv->psc_module, ret);
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return ret;
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}
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return 0;
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}
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static const struct dm_rproc_ops ti_powerproc_ops = {
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.load = ti_powerproc_load,
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.start = ti_powerproc_start,
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};
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static const struct udevice_id ti_powerproc_ids[] = {
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{.compatible = "ti,power-processor"},
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{}
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};
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U_BOOT_DRIVER(ti_powerproc) = {
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.name = "ti_power_proc",
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.of_match = ti_powerproc_ids,
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.id = UCLASS_REMOTEPROC,
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.ops = &ti_powerproc_ops,
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.probe = ti_powerproc_probe,
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.priv_auto_alloc_size = sizeof(struct ti_powerproc_privdata),
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};
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