Release 4.14 arch/sparc/kernel/central.c
// SPDX-License-Identifier: GPL-2.0
/* central.c: Central FHC driver for Sunfire/Starfire/Wildfire.
*
* Copyright (C) 1997, 1999, 2008 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <asm/fhc.h>
#include <asm/upa.h>
struct clock_board {
void __iomem *clock_freq_regs;
void __iomem *clock_regs;
void __iomem *clock_ver_reg;
int num_slots;
struct resource leds_resource;
struct platform_device leds_pdev;
};
struct fhc {
void __iomem *pregs;
bool central;
bool jtag_master;
int board_num;
struct resource leds_resource;
struct platform_device leds_pdev;
};
static int clock_board_calc_nslots(struct clock_board *p)
{
u8 reg = upa_readb(p->clock_regs + CLOCK_STAT1) & 0xc0;
switch (reg) {
case 0x40:
return 16;
case 0xc0:
return 8;
case 0x80:
reg = 0;
if (p->clock_ver_reg)
reg = upa_readb(p->clock_ver_reg);
if (reg) {
if (reg & 0x80)
return 4;
else
return 5;
}
/* Fallthrough */
default:
return 4;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 76 | 85.39% | 2 | 50.00% |
| Linus Torvalds (pre-git) | 13 | 14.61% | 2 | 50.00% |
| Total | 89 | 100.00% | 4 | 100.00% |
static int clock_board_probe(struct platform_device *op)
{
struct clock_board *p = kzalloc(sizeof(*p), GFP_KERNEL);
int err = -ENOMEM;
if (!p) {
printk(KERN_ERR "clock_board: Cannot allocate struct clock_board\n");
goto out;
}
p->clock_freq_regs = of_ioremap(&op->resource[0], 0,
resource_size(&op->resource[0]),
"clock_board_freq");
if (!p->clock_freq_regs) {
printk(KERN_ERR "clock_board: Cannot map clock_freq_regs\n");
goto out_free;
}
p->clock_regs = of_ioremap(&op->resource[1], 0,
resource_size(&op->resource[1]),
"clock_board_regs");
if (!p->clock_regs) {
printk(KERN_ERR "clock_board: Cannot map clock_regs\n");
goto out_unmap_clock_freq_regs;
}
if (op->resource[2].flags) {
p->clock_ver_reg = of_ioremap(&op->resource[2], 0,
resource_size(&op->resource[2]),
"clock_ver_reg");
if (!p->clock_ver_reg) {
printk(KERN_ERR "clock_board: Cannot map clock_ver_reg\n");
goto out_unmap_clock_regs;
}
}
p->num_slots = clock_board_calc_nslots(p);
p->leds_resource.start = (unsigned long)
(p->clock_regs + CLOCK_CTRL);
p->leds_resource.end = p->leds_resource.start;
p->leds_resource.name = "leds";
p->leds_pdev.name = "sunfire-clockboard-leds";
p->leds_pdev.id = -1;
p->leds_pdev.resource = &p->leds_resource;
p->leds_pdev.num_resources = 1;
p->leds_pdev.dev.parent = &op->dev;
err = platform_device_register(&p->leds_pdev);
if (err) {
printk(KERN_ERR "clock_board: Could not register LEDS "
"platform device\n");
goto out_unmap_clock_ver_reg;
}
printk(KERN_INFO "clock_board: Detected %d slot Enterprise system.\n",
p->num_slots);
err = 0;
out:
return err;
out_unmap_clock_ver_reg:
if (p->clock_ver_reg)
of_iounmap(&op->resource[2], p->clock_ver_reg,
resource_size(&op->resource[2]));
out_unmap_clock_regs:
of_iounmap(&op->resource[1], p->clock_regs,
resource_size(&op->resource[1]));
out_unmap_clock_freq_regs:
of_iounmap(&op->resource[0], p->clock_freq_regs,
resource_size(&op->resource[0]));
out_free:
kfree(p);
goto out;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 369 | 82.55% | 4 | 44.44% |
| Linus Torvalds (pre-git) | 76 | 17.00% | 3 | 33.33% |
| Roel Kluin | 1 | 0.22% | 1 | 11.11% |
| Grant C. Likely | 1 | 0.22% | 1 | 11.11% |
| Total | 447 | 100.00% | 9 | 100.00% |
static const struct of_device_id clock_board_match[] = {
{
.name = "clock-board",
},
{},
};
static struct platform_driver clock_board_driver = {
.probe = clock_board_probe,
.driver = {
.name = "clock_board",
.of_match_table = clock_board_match,
},
};
static int fhc_probe(struct platform_device *op)
{
struct fhc *p = kzalloc(sizeof(*p), GFP_KERNEL);
int err = -ENOMEM;
u32 reg;
if (!p) {
printk(KERN_ERR "fhc: Cannot allocate struct fhc\n");
goto out;
}
if (!strcmp(op->dev.of_node->parent->name, "central"))
p->central = true;
p->pregs = of_ioremap(&op->resource[0], 0,
resource_size(&op->resource[0]),
"fhc_pregs");
if (!p->pregs) {
printk(KERN_ERR "fhc: Cannot map pregs\n");
goto out_free;
}
if (p->central) {
reg = upa_readl(p->pregs + FHC_PREGS_BSR);
p->board_num = ((reg >> 16) & 1) | ((reg >> 12) & 0x0e);
} else {
p->board_num = of_getintprop_default(op->dev.of_node, "board#", -1);
if (p->board_num == -1) {
printk(KERN_ERR "fhc: No board# property\n");
goto out_unmap_pregs;
}
if (upa_readl(p->pregs + FHC_PREGS_JCTRL) & FHC_JTAG_CTRL_MENAB)
p->jtag_master = true;
}
if (!p->central) {
p->leds_resource.start = (unsigned long)
(p->pregs + FHC_PREGS_CTRL);
p->leds_resource.end = p->leds_resource.start;
p->leds_resource.name = "leds";
p->leds_pdev.name = "sunfire-fhc-leds";
p->leds_pdev.id = p->board_num;
p->leds_pdev.resource = &p->leds_resource;
p->leds_pdev.num_resources = 1;
p->leds_pdev.dev.parent = &op->dev;
err = platform_device_register(&p->leds_pdev);
if (err) {
printk(KERN_ERR "fhc: Could not register LEDS "
"platform device\n");
goto out_unmap_pregs;
}
}
reg = upa_readl(p->pregs + FHC_PREGS_CTRL);
if (!p->central)
reg |= FHC_CONTROL_IXIST;
reg &= ~(FHC_CONTROL_AOFF |
FHC_CONTROL_BOFF |
FHC_CONTROL_SLINE);
upa_writel(reg, p->pregs + FHC_PREGS_CTRL);
upa_readl(p->pregs + FHC_PREGS_CTRL);
reg = upa_readl(p->pregs + FHC_PREGS_ID);
printk(KERN_INFO "fhc: Board #%d, Version[%x] PartID[%x] Manuf[%x] %s\n",
p->board_num,
(reg & FHC_ID_VERS) >> 28,
(reg & FHC_ID_PARTID) >> 12,
(reg & FHC_ID_MANUF) >> 1,
(p->jtag_master ?
"(JTAG Master)" :
(p->central ? "(Central)" : "")));
err = 0;
out:
return err;
out_unmap_pregs:
of_iounmap(&op->resource[0], p->pregs, resource_size(&op->resource[0]));
out_free:
kfree(p);
goto out;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 370 | 72.12% | 4 | 44.44% |
| Linus Torvalds (pre-git) | 135 | 26.32% | 2 | 22.22% |
| Grant C. Likely | 7 | 1.36% | 2 | 22.22% |
| Roel Kluin | 1 | 0.19% | 1 | 11.11% |
| Total | 513 | 100.00% | 9 | 100.00% |
static const struct of_device_id fhc_match[] = {
{
.name = "fhc",
},
{},
};
static struct platform_driver fhc_driver = {
.probe = fhc_probe,
.driver = {
.name = "fhc",
.of_match_table = fhc_match,
},
};
static int __init sunfire_init(void)
{
(void) platform_driver_register(&fhc_driver);
(void) platform_driver_register(&clock_board_driver);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 16 | 53.33% | 2 | 50.00% |
| David S. Miller | 12 | 40.00% | 1 | 25.00% |
| Grant C. Likely | 2 | 6.67% | 1 | 25.00% |
| Total | 30 | 100.00% | 4 | 100.00% |
fs_initcall(sunfire_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 957 | 75.71% | 7 | 36.84% |
| Linus Torvalds (pre-git) | 276 | 21.84% | 4 | 21.05% |
| Grant C. Likely | 22 | 1.74% | 4 | 21.05% |
| Paul Gortmaker | 3 | 0.24% | 1 | 5.26% |
| Tejun Heo | 3 | 0.24% | 1 | 5.26% |
| Roel Kluin | 2 | 0.16% | 1 | 5.26% |
| Greg Kroah-Hartman | 1 | 0.08% | 1 | 5.26% |
| Total | 1264 | 100.00% | 19 | 100.00% |
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