// SPDX-License-Identifier: GPL-2.0+
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/*
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* Add an IPMI platform device.
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*/
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#include <linux/platform_device.h>
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#include "ipmi_plat_data.h"
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#include "ipmi_si.h"
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struct platform_device *ipmi_platform_add(const char *name, unsigned int inst,
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struct ipmi_plat_data *p)
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{
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struct platform_device *pdev;
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unsigned int num_r = 1, size = 0, pidx = 0;
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struct resource r[4];
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struct property_entry pr[6];
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u32 flags;
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int rv;
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memset(pr, 0, sizeof(pr));
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memset(r, 0, sizeof(r));
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if (p->iftype == IPMI_PLAT_IF_SI) {
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if (p->type == SI_BT)
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size = 3;
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else if (p->type != SI_TYPE_INVALID)
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size = 2;
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if (p->regsize == 0)
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p->regsize = DEFAULT_REGSIZE;
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if (p->regspacing == 0)
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p->regspacing = p->regsize;
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pr[pidx++] = PROPERTY_ENTRY_U8("ipmi-type", p->type);
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} else if (p->iftype == IPMI_PLAT_IF_SSIF) {
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pr[pidx++] = PROPERTY_ENTRY_U16("i2c-addr", p->addr);
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}
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if (p->slave_addr)
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pr[pidx++] = PROPERTY_ENTRY_U8("slave-addr", p->slave_addr);
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pr[pidx++] = PROPERTY_ENTRY_U8("addr-source", p->addr_source);
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if (p->regshift)
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pr[pidx++] = PROPERTY_ENTRY_U8("reg-shift", p->regshift);
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pr[pidx++] = PROPERTY_ENTRY_U8("reg-size", p->regsize);
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/* Last entry must be left NULL to terminate it. */
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pdev = platform_device_alloc(name, inst);
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if (!pdev) {
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pr_err("Error allocating IPMI platform device %s.%d\n",
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name, inst);
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return NULL;
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}
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if (size == 0)
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/* An invalid or SSIF interface, no resources. */
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goto add_properties;
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/*
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* Register spacing is derived from the resources in
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* the IPMI platform code.
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*/
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if (p->space == IPMI_IO_ADDR_SPACE)
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flags = IORESOURCE_IO;
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else
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flags = IORESOURCE_MEM;
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r[0].start = p->addr;
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r[0].end = r[0].start + p->regsize - 1;
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r[0].name = "IPMI Address 1";
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r[0].flags = flags;
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if (size > 1) {
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r[1].start = r[0].start + p->regspacing;
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r[1].end = r[1].start + p->regsize - 1;
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r[1].name = "IPMI Address 2";
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r[1].flags = flags;
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num_r++;
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}
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if (size > 2) {
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r[2].start = r[1].start + p->regspacing;
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r[2].end = r[2].start + p->regsize - 1;
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r[2].name = "IPMI Address 3";
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r[2].flags = flags;
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num_r++;
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}
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if (p->irq) {
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r[num_r].start = p->irq;
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r[num_r].end = p->irq;
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r[num_r].name = "IPMI IRQ";
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r[num_r].flags = IORESOURCE_IRQ;
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num_r++;
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}
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rv = platform_device_add_resources(pdev, r, num_r);
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if (rv) {
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dev_err(&pdev->dev,
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"Unable to add hard-code resources: %d\n", rv);
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goto err;
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}
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add_properties:
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rv = platform_device_add_properties(pdev, pr);
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if (rv) {
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dev_err(&pdev->dev,
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"Unable to add hard-code properties: %d\n", rv);
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goto err;
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}
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rv = platform_device_add(pdev);
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if (rv) {
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dev_err(&pdev->dev,
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"Unable to add hard-code device: %d\n", rv);
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goto err;
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}
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return pdev;
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err:
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platform_device_put(pdev);
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return NULL;
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}
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EXPORT_SYMBOL(ipmi_platform_add);
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