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https://github.com/AsahiLinux/u-boot
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a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
/*
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* DWC SATA platform driver
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*
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* (C) Copyright 2016
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* Texas Instruments Incorporated, <www.ti.com>
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*
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* Author: Mugunthan V N <mugunthanvnm@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <ahci.h>
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#include <scsi.h>
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#include <sata.h>
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#include <asm/arch/sata.h>
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#include <asm/io.h>
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#include <generic-phy.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct dwc_ahci_priv {
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void *base;
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void *wrapper_base;
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};
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static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
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{
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struct dwc_ahci_priv *priv = dev_get_priv(dev);
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struct scsi_platdata *plat = dev_get_platdata(dev);
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fdt_addr_t addr;
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plat->max_id = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, "max-id",
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CONFIG_SYS_SCSI_MAX_SCSI_ID);
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plat->max_lun = fdtdec_get_uint(gd->fdt_blob, dev->of_offset,
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"max-lun", CONFIG_SYS_SCSI_MAX_LUN);
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priv->base = map_physmem(devfdt_get_addr(dev), sizeof(void *),
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MAP_NOCACHE);
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addr = devfdt_get_addr_index(dev, 1);
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if (addr != FDT_ADDR_T_NONE) {
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priv->wrapper_base = map_physmem(addr, sizeof(void *),
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MAP_NOCACHE);
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} else {
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priv->wrapper_base = NULL;
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}
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return 0;
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}
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static int dwc_ahci_probe(struct udevice *dev)
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{
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struct dwc_ahci_priv *priv = dev_get_priv(dev);
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int ret;
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struct phy phy;
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ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
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if (ret) {
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error("can't get the phy from DT\n");
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return ret;
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}
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ret = generic_phy_init(&phy);
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if (ret) {
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error("unable to initialize the sata phy\n");
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return ret;
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}
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ret = generic_phy_power_on(&phy);
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if (ret) {
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error("unable to power on the sata phy\n");
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return ret;
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}
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if (priv->wrapper_base) {
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u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO;
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/* Enable SATA module, No Idle, No Standby */
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writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
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}
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return ahci_init(priv->base);
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}
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static const struct udevice_id dwc_ahci_ids[] = {
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{ .compatible = "snps,dwc-ahci" },
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{ }
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};
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U_BOOT_DRIVER(dwc_ahci) = {
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.name = "dwc_ahci",
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.id = UCLASS_SCSI,
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.of_match = dwc_ahci_ids,
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.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
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.probe = dwc_ahci_probe,
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.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
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.platdata_auto_alloc_size = sizeof(struct scsi_platdata),
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.flags = DM_FLAG_ALLOC_PRIV_DMA,
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};
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