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![Simon Glass](/assets/img/avatar_default.png)
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
182 lines
4.3 KiB
C
182 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 <log.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_plat(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_plat(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_plat(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 = sizeof(struct ti_powerproc_privdata),
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};
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