diff options
Diffstat (limited to 'drivers/remoteproc/k3_rproc.c')
| -rw-r--r-- | drivers/remoteproc/k3_rproc.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/drivers/remoteproc/k3_rproc.c b/drivers/remoteproc/k3_rproc.c deleted file mode 100644 index 4f9567c924..0000000000 --- a/drivers/remoteproc/k3_rproc.c +++ /dev/null @@ -1,227 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Texas Instruments' K3 Remoteproc driver - * - * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ - * Lokesh Vutla <lokeshvutla@ti.com> - * - */ - -#include <common.h> -#include <dm.h> -#include <remoteproc.h> -#include <errno.h> -#include <clk.h> -#include <reset.h> -#include <asm/io.h> -#include <power-domain.h> -#include <linux/soc/ti/ti_sci_protocol.h> -#include "ti_sci_proc.h" - -#define INVALID_ID 0xffff - -#define GTC_CNTCR_REG 0x0 -#define GTC_CNTR_EN 0x3 - -/** - * struct k3_rproc_privdata - Structure representing Remote processor data. - * @rproc_pwrdmn: rproc power domain data - * @rproc_rst: rproc reset control data - * @sci: Pointer to TISCI handle - * @tsp: TISCI processor control helper structure - * @gtc_base: Timer base address. - */ -struct k3_rproc_privdata { - struct power_domain rproc_pwrdmn; - struct power_domain gtc_pwrdmn; - struct reset_ctl rproc_rst; - struct ti_sci_proc tsp; - void *gtc_base; -}; - -/** - * k3_rproc_load() - Load up the Remote processor image - * @dev: rproc device pointer - * @addr: Address at which image is available - * @size: size of the image - * - * Return: 0 if all goes good, else appropriate error message. - */ -static int k3_rproc_load(struct udevice *dev, ulong addr, ulong size) -{ - struct k3_rproc_privdata *rproc = dev_get_priv(dev); - int ret; - - dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size); - - /* request for the processor */ - ret = ti_sci_proc_request(&rproc->tsp); - if (ret) - return ret; - - return ti_sci_proc_set_config(&rproc->tsp, addr, 0, 0); -} - -/** - * k3_rproc_start() - Start the remote processor - * @dev: rproc device pointer - * - * Return: 0 if all went ok, else return appropriate error - */ -static int k3_rproc_start(struct udevice *dev) -{ - struct k3_rproc_privdata *rproc = dev_get_priv(dev); - int ret; - - dev_dbg(dev, "%s\n", __func__); - - ret = power_domain_on(&rproc->gtc_pwrdmn); - if (ret) { - dev_err(dev, "power_domain_on() failed: %d\n", ret); - return ret; - } - - /* Enable the timer before starting remote core */ - writel(GTC_CNTR_EN, rproc->gtc_base + GTC_CNTCR_REG); - - /* - * Setting the right clock frequency would have taken care by - * assigned-clock-rates during the device probe. So no need to - * set the frequency again here. - */ - ret = power_domain_on(&rproc->rproc_pwrdmn); - if (ret) { - dev_err(dev, "power_domain_on() failed: %d\n", ret); - return ret; - } - - return ti_sci_proc_release(&rproc->tsp); -} - -/** - * k3_rproc_init() - Initialize the remote processor - * @dev: rproc device pointer - * - * Return: 0 if all went ok, else return appropriate error - */ -static int k3_rproc_init(struct udevice *dev) -{ - dev_dbg(dev, "%s\n", __func__); - - /* Enable the module */ - dev_dbg(dev, "%s: rproc successfully initialized\n", __func__); - - return 0; -} - -static const struct dm_rproc_ops k3_rproc_ops = { - .init = k3_rproc_init, - .load = k3_rproc_load, - .start = k3_rproc_start, -}; - -static int ti_sci_proc_of_to_priv(struct udevice *dev, struct ti_sci_proc *tsp) -{ - dev_dbg(dev, "%s\n", __func__); - - tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci"); - if (IS_ERR(tsp->sci)) { - dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci)); - return PTR_ERR(tsp->sci); - } - - tsp->proc_id = dev_read_u32_default(dev, "ti,sci-proc-id", INVALID_ID); - if (tsp->proc_id == INVALID_ID) { - dev_err(dev, "proc id not populated\n"); - return -ENOENT; - } - tsp->host_id = dev_read_u32_default(dev, "ti,sci-host-id", INVALID_ID); - tsp->ops = &tsp->sci->ops.proc_ops; - - return 0; -} - -/** - * k3_of_to_priv() - generate private data from device tree - * @dev: corresponding k3 remote processor device - * @priv: pointer to driver specific private data - * - * Return: 0 if all goes good, else appropriate error message. - */ -static int k3_rproc_of_to_priv(struct udevice *dev, - struct k3_rproc_privdata *rproc) -{ - int ret; - - dev_dbg(dev, "%s\n", __func__); - - ret = power_domain_get_by_index(dev, &rproc->rproc_pwrdmn, 1); - if (ret) { - dev_err(dev, "power_domain_get() failed: %d\n", ret); - return ret; - } - - ret = power_domain_get_by_index(dev, &rproc->gtc_pwrdmn, 0); - if (ret) { - dev_err(dev, "power_domain_get() failed: %d\n", ret); - return ret; - } - - ret = reset_get_by_index(dev, 0, &rproc->rproc_rst); - if (ret) { - dev_err(dev, "reset_get() failed: %d\n", ret); - return ret; - } - - ret = ti_sci_proc_of_to_priv(dev, &rproc->tsp); - if (ret) - return ret; - - rproc->gtc_base = dev_read_addr_ptr(dev); - if (!rproc->gtc_base) { - dev_err(dev, "Get address failed\n"); - return -ENODEV; - } - - return 0; -} - -/** - * k3_rproc_probe() - Basic probe - * @dev: corresponding k3 remote processor device - * - * Return: 0 if all goes good, else appropriate error message. - */ -static int k3_rproc_probe(struct udevice *dev) -{ - struct k3_rproc_privdata *priv; - int ret; - - dev_dbg(dev, "%s\n", __func__); - - priv = dev_get_priv(dev); - - ret = k3_rproc_of_to_priv(dev, priv); - if (ret) { - dev_dbg(dev, "%s: Probe failed with error %d\n", __func__, ret); - return ret; - } - - dev_dbg(dev, "Remoteproc successfully probed\n"); - - return 0; -} - -static const struct udevice_id k3_rproc_ids[] = { - { .compatible = "ti,am654-rproc"}, - {} -}; - -U_BOOT_DRIVER(k3_rproc) = { - .name = "k3_rproc", - .of_match = k3_rproc_ids, - .id = UCLASS_REMOTEPROC, - .ops = &k3_rproc_ops, - .probe = k3_rproc_probe, - .priv_auto_alloc_size = sizeof(struct k3_rproc_privdata), -}; |