From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/mmc/host/s3cmci.c | 184 ++++++++++-----------------------------------
1 files changed, 43 insertions(+), 141 deletions(-)
diff --git a/kernel/drivers/mmc/host/s3cmci.c b/kernel/drivers/mmc/host/s3cmci.c
index b8ab04f..643d54e 100644
--- a/kernel/drivers/mmc/host/s3cmci.c
+++ b/kernel/drivers/mmc/host/s3cmci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
*
@@ -5,10 +6,6 @@
*
* Current driver maintained by Ben Dooks and Simtec Electronics
* Copyright (C) 2008 Simtec Electronics <ben-linux@fluff.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/module.h>
@@ -26,13 +23,7 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/of_gpio.h>
#include <linux/mmc/slot-gpio.h>
-
-#include <plat/gpio-cfg.h>
-#include <mach/dma.h>
-#include <mach/gpio-samsung.h>
-
#include <linux/platform_data/mmc-s3cmci.h>
#include "s3cmci.h"
@@ -154,8 +145,8 @@
static void dbg_dumpregs(struct s3cmci_host *host, char *prefix)
{
- u32 con, pre, cmdarg, cmdcon, cmdsta, r0, r1, r2, r3, timer, bsize;
- u32 datcon, datcnt, datsta, fsta, imask;
+ u32 con, pre, cmdarg, cmdcon, cmdsta, r0, r1, r2, r3, timer;
+ u32 datcon, datcnt, datsta, fsta;
con = readl(host->base + S3C2410_SDICON);
pre = readl(host->base + S3C2410_SDIPRE);
@@ -167,12 +158,10 @@
r2 = readl(host->base + S3C2410_SDIRSP2);
r3 = readl(host->base + S3C2410_SDIRSP3);
timer = readl(host->base + S3C2410_SDITIMER);
- bsize = readl(host->base + S3C2410_SDIBSIZE);
datcon = readl(host->base + S3C2410_SDIDCON);
datcnt = readl(host->base + S3C2410_SDIDCNT);
datsta = readl(host->base + S3C2410_SDIDSTA);
fsta = readl(host->base + S3C2410_SDIFSTA);
- imask = readl(host->base + host->sdiimsk);
dbg(host, dbg_debug, "%s CON:[%08x] PRE:[%08x] TMR:[%08x]\n",
prefix, con, pre, timer);
@@ -311,7 +300,8 @@
static void s3cmci_check_sdio_irq(struct s3cmci_host *host)
{
if (host->sdio_irqen) {
- if (gpio_get_value(S3C2410_GPE(8)) == 0) {
+ if (host->pdata->bus[3] &&
+ gpiod_get_value(host->pdata->bus[3]) == 0) {
pr_debug("%s: signalling irq\n", __func__);
mmc_signal_sdio_irq(host->mmc);
}
@@ -400,9 +390,6 @@
local_irq_restore(flags);
}
-/**
- *
- */
static void s3cmci_disable_irq(struct s3cmci_host *host, bool transfer)
{
unsigned long flags;
@@ -962,13 +949,6 @@
{
u32 dcon, imsk, stoptries = 3;
- /* write DCON register */
-
- if (!data) {
- writel(0, host->base + S3C2410_SDIDCON);
- return 0;
- }
-
if ((data->blksz & 3) != 0) {
/* We cannot deal with unaligned blocks with more than
* one block being transferred. */
@@ -1217,32 +1197,19 @@
switch (ios->power_mode) {
case MMC_POWER_ON:
case MMC_POWER_UP:
- /* Configure GPE5...GPE10 pins in SD mode */
- if (!host->pdev->dev.of_node)
- s3c_gpio_cfgall_range(S3C2410_GPE(5), 6, S3C_GPIO_SFN(2),
- S3C_GPIO_PULL_NONE);
-
- if (host->pdata->set_power)
- host->pdata->set_power(ios->power_mode, ios->vdd);
-
if (!host->is2440)
mci_con |= S3C2410_SDICON_FIFORESET;
-
break;
case MMC_POWER_OFF:
default:
- if (!host->pdev->dev.of_node)
- gpio_direction_output(S3C2410_GPE(5), 0);
-
if (host->is2440)
mci_con |= S3C2440_SDICON_SDRESET;
-
- if (host->pdata->set_power)
- host->pdata->set_power(ios->power_mode, ios->vdd);
-
break;
}
+
+ if (host->pdata->set_power)
+ host->pdata->set_power(ios->power_mode, ios->vdd);
s3cmci_set_clk(host, ios);
@@ -1321,13 +1288,6 @@
.enable_sdio_irq = s3cmci_enable_sdio_irq,
};
-static struct s3c24xx_mci_pdata s3cmci_def_pdata = {
- /* This is currently here to avoid a number of if (host->pdata)
- * checks. Any zero fields to ensure reasonable defaults are picked. */
- .no_wprotect = 1,
- .no_detect = 1,
-};
-
#ifdef CONFIG_ARM_S3C24XX_CPUFREQ
static int s3cmci_cpufreq_transition(struct notifier_block *nb,
@@ -1390,7 +1350,7 @@
{
struct s3cmci_host *host = seq->private;
- seq_printf(seq, "Register base = 0x%08x\n", (u32)host->base);
+ seq_printf(seq, "Register base = 0x%p\n", host->base);
seq_printf(seq, "Clock rate = %ld\n", host->clk_rate);
seq_printf(seq, "Prescale = %d\n", host->prescaler);
seq_printf(seq, "is2440 = %d\n", host->is2440);
@@ -1406,18 +1366,7 @@
return 0;
}
-static int s3cmci_state_open(struct inode *inode, struct file *file)
-{
- return single_open(file, s3cmci_state_show, inode->i_private);
-}
-
-static const struct file_operations s3cmci_fops_state = {
- .owner = THIS_MODULE,
- .open = s3cmci_state_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(s3cmci_state);
#define DBG_REG(_r) { .addr = S3C2410_SDI##_r, .name = #_r }
@@ -1459,49 +1408,23 @@
return 0;
}
-static int s3cmci_regs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, s3cmci_regs_show, inode->i_private);
-}
-
-static const struct file_operations s3cmci_fops_regs = {
- .owner = THIS_MODULE,
- .open = s3cmci_regs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(s3cmci_regs);
static void s3cmci_debugfs_attach(struct s3cmci_host *host)
{
struct device *dev = &host->pdev->dev;
+ struct dentry *root;
- host->debug_root = debugfs_create_dir(dev_name(dev), NULL);
- if (IS_ERR(host->debug_root)) {
- dev_err(dev, "failed to create debugfs root\n");
- return;
- }
+ root = debugfs_create_dir(dev_name(dev), NULL);
+ host->debug_root = root;
- host->debug_state = debugfs_create_file("state", 0444,
- host->debug_root, host,
- &s3cmci_fops_state);
-
- if (IS_ERR(host->debug_state))
- dev_err(dev, "failed to create debug state file\n");
-
- host->debug_regs = debugfs_create_file("regs", 0444,
- host->debug_root, host,
- &s3cmci_fops_regs);
-
- if (IS_ERR(host->debug_regs))
- dev_err(dev, "failed to create debug regs file\n");
+ debugfs_create_file("state", 0444, root, host, &s3cmci_state_fops);
+ debugfs_create_file("regs", 0444, root, host, &s3cmci_regs_fops);
}
static void s3cmci_debugfs_remove(struct s3cmci_host *host)
{
- debugfs_remove(host->debug_regs);
- debugfs_remove(host->debug_state);
- debugfs_remove(host->debug_root);
+ debugfs_remove_recursive(host->debug_root);
}
#else
@@ -1518,23 +1441,20 @@
int i, ret;
host->is2440 = platform_get_device_id(pdev)->driver_data;
-
- for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++) {
- ret = gpio_request(i, dev_name(&pdev->dev));
- if (ret) {
- dev_err(&pdev->dev, "failed to get gpio %d\n", i);
-
- for (i--; i >= S3C2410_GPE(5); i--)
- gpio_free(i);
-
- return ret;
- }
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "need platform data");
+ return -ENXIO;
}
- if (!pdev->dev.platform_data)
- pdev->dev.platform_data = &s3cmci_def_pdata;
-
- pdata = pdev->dev.platform_data;
+ for (i = 0; i < 6; i++) {
+ pdata->bus[i] = devm_gpiod_get_index(&pdev->dev, "bus", i,
+ GPIOD_OUT_LOW);
+ if (IS_ERR(pdata->bus[i])) {
+ dev_err(&pdev->dev, "failed to get gpio %d\n", i);
+ return PTR_ERR(pdata->bus[i]);
+ }
+ }
if (pdata->no_wprotect)
mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
@@ -1545,25 +1465,19 @@
if (pdata->wprotect_invert)
mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
- if (pdata->detect_invert)
- mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
-
- if (gpio_is_valid(pdata->gpio_detect)) {
- ret = mmc_gpio_request_cd(mmc, pdata->gpio_detect, 0);
- if (ret) {
- dev_err(&pdev->dev, "error requesting GPIO for CD %d\n",
- ret);
- return ret;
- }
+ /* If we get -ENOENT we have no card detect GPIO line */
+ ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0);
+ if (ret != -ENOENT) {
+ dev_err(&pdev->dev, "error requesting GPIO for CD %d\n",
+ ret);
+ return ret;
}
- if (gpio_is_valid(pdata->gpio_wprotect)) {
- ret = mmc_gpio_request_ro(mmc, pdata->gpio_wprotect);
- if (ret) {
- dev_err(&pdev->dev, "error requesting GPIO for WP %d\n",
- ret);
- return ret;
- }
+ ret = mmc_gpiod_request_ro(host->mmc, "wp", 0, 0);
+ if (ret != -ENOENT) {
+ dev_err(&pdev->dev, "error requesting GPIO for WP %d\n",
+ ret);
+ return ret;
}
return 0;
@@ -1576,7 +1490,7 @@
struct mmc_host *mmc = host->mmc;
int ret;
- host->is2440 = (int) of_device_get_match_data(&pdev->dev);
+ host->is2440 = (long) of_device_get_match_data(&pdev->dev);
ret = mmc_of_parse(mmc);
if (ret)
@@ -1596,7 +1510,6 @@
struct s3cmci_host *host;
struct mmc_host *mmc;
int ret;
- int i;
mmc = mmc_alloc_host(sizeof(struct s3cmci_host), &pdev->dev);
if (!mmc) {
@@ -1640,7 +1553,7 @@
"failed to get io memory region resource.\n");
ret = -ENOENT;
- goto probe_free_gpio;
+ goto probe_free_host;
}
host->mem = request_mem_region(host->mem->start,
@@ -1649,7 +1562,7 @@
if (!host->mem) {
dev_err(&pdev->dev, "failed to request io memory region.\n");
ret = -ENOENT;
- goto probe_free_gpio;
+ goto probe_free_host;
}
host->base = ioremap(host->mem->start, resource_size(host->mem));
@@ -1661,7 +1574,6 @@
host->irq = platform_get_irq(pdev, 0);
if (host->irq <= 0) {
- dev_err(&pdev->dev, "failed to get interrupt resource.\n");
ret = -EINVAL;
goto probe_iounmap;
}
@@ -1774,11 +1686,6 @@
probe_free_mem_region:
release_mem_region(host->mem->start, resource_size(host->mem));
- probe_free_gpio:
- if (!pdev->dev.of_node)
- for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
- gpio_free(i);
-
probe_free_host:
mmc_free_host(mmc);
@@ -1804,7 +1711,6 @@
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct s3cmci_host *host = mmc_priv(mmc);
- int i;
s3cmci_shutdown(pdev);
@@ -1816,10 +1722,6 @@
dma_release_channel(host->dma);
free_irq(host->irq, host);
-
- if (!pdev->dev.of_node)
- for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
- gpio_free(i);
iounmap(host->base);
release_mem_region(host->mem->start, resource_size(host->mem));
--
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