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/usdhi6rol0.c | 57 ++++++++++++++++++++++++++-------------------------------
1 files changed, 26 insertions(+), 31 deletions(-)
diff --git a/kernel/drivers/mmc/host/usdhi6rol0.c b/kernel/drivers/mmc/host/usdhi6rol0.c
index b88728b..4f22ece 100644
--- a/kernel/drivers/mmc/host/usdhi6rol0.c
+++ b/kernel/drivers/mmc/host/usdhi6rol0.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2013-2014 Renesas Electronics Europe Ltd.
* Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
*/
#include <linux/clk.h>
@@ -139,6 +136,8 @@
#define USDHI6_MIN_DMA 64
+#define USDHI6_REQ_TIMEOUT_MS 4000
+
enum usdhi6_wait_for {
USDHI6_WAIT_FOR_REQUEST,
USDHI6_WAIT_FOR_CMD,
@@ -202,7 +201,6 @@
/* Pin control */
struct pinctrl *pinctrl;
- struct pinctrl_state *pins_default;
struct pinctrl_state *pins_uhs;
};
@@ -680,12 +678,14 @@
};
int ret;
- host->chan_tx = dma_request_slave_channel(mmc_dev(host->mmc), "tx");
+ host->chan_tx = dma_request_chan(mmc_dev(host->mmc), "tx");
dev_dbg(mmc_dev(host->mmc), "%s: TX: got channel %p\n", __func__,
host->chan_tx);
- if (!host->chan_tx)
+ if (IS_ERR(host->chan_tx)) {
+ host->chan_tx = NULL;
return;
+ }
cfg.direction = DMA_MEM_TO_DEV;
cfg.dst_addr = start + USDHI6_SD_BUF0;
@@ -695,12 +695,14 @@
if (ret < 0)
goto e_release_tx;
- host->chan_rx = dma_request_slave_channel(mmc_dev(host->mmc), "rx");
+ host->chan_rx = dma_request_chan(mmc_dev(host->mmc), "rx");
dev_dbg(mmc_dev(host->mmc), "%s: RX: got channel %p\n", __func__,
host->chan_rx);
- if (!host->chan_rx)
+ if (IS_ERR(host->chan_rx)) {
+ host->chan_rx = NULL;
goto e_release_tx;
+ }
cfg.direction = DMA_DEV_TO_MEM;
cfg.src_addr = cfg.dst_addr;
@@ -1165,8 +1167,7 @@
host->pins_uhs);
default:
- return pinctrl_select_state(host->pinctrl,
- host->pins_default);
+ return pinctrl_select_default_state(mmc_dev(host->mmc));
}
}
@@ -1342,7 +1343,7 @@
host->wait = USDHI6_WAIT_FOR_STOP;
return 0;
}
- /* Unsupported STOP command */
+ fallthrough; /* Unsupported STOP command */
default:
dev_err(mmc_dev(host->mmc),
"unsupported stop CMD%d for CMD%d\n",
@@ -1690,7 +1691,7 @@
switch (host->wait) {
default:
dev_err(mmc_dev(host->mmc), "Invalid state %u\n", host->wait);
- /* mrq can be NULL in this actually impossible case */
+ fallthrough; /* mrq can be NULL, but is impossible */
case USDHI6_WAIT_FOR_CMD:
usdhi6_error_code(host);
if (mrq)
@@ -1712,10 +1713,7 @@
host->offset, data->blocks, data->blksz, data->sg_len,
sg_dma_len(sg), sg->offset);
usdhi6_sg_unmap(host, true);
- /*
- * If USDHI6_WAIT_FOR_DATA_END times out, we have already unmapped
- * the page
- */
+ fallthrough; /* page unmapped in USDHI6_WAIT_FOR_DATA_END */
case USDHI6_WAIT_FOR_DATA_END:
usdhi6_error_code(host);
data->error = -ETIMEDOUT;
@@ -1749,8 +1747,10 @@
irq_cd = platform_get_irq_byname(pdev, "card detect");
irq_sd = platform_get_irq_byname(pdev, "data");
irq_sdio = platform_get_irq_byname(pdev, "SDIO");
- if (irq_sd < 0 || irq_sdio < 0)
- return -ENODEV;
+ if (irq_sd < 0)
+ return irq_sd;
+ if (irq_sdio < 0)
+ return irq_sdio;
mmc = mmc_alloc_host(sizeof(struct usdhi6_host), dev);
if (!mmc)
@@ -1767,7 +1767,12 @@
host = mmc_priv(mmc);
host->mmc = mmc;
host->wait = USDHI6_WAIT_FOR_REQUEST;
- host->timeout = msecs_to_jiffies(4000);
+ host->timeout = msecs_to_jiffies(USDHI6_REQ_TIMEOUT_MS);
+ /*
+ * We use a fixed timeout of 4s, hence inform the core about it. A
+ * future improvement should instead respect the cmd->busy_timeout.
+ */
+ mmc->max_busy_timeout = USDHI6_REQ_TIMEOUT_MS;
host->pinctrl = devm_pinctrl_get(&pdev->dev);
if (IS_ERR(host->pinctrl)) {
@@ -1776,17 +1781,6 @@
}
host->pins_uhs = pinctrl_lookup_state(host->pinctrl, "state_uhs");
- if (!IS_ERR(host->pins_uhs)) {
- host->pins_default = pinctrl_lookup_state(host->pinctrl,
- PINCTRL_STATE_DEFAULT);
-
- if (IS_ERR(host->pins_default)) {
- dev_err(dev,
- "UHS pinctrl requires a default pin state.\n");
- ret = PTR_ERR(host->pins_default);
- goto e_free_mmc;
- }
- }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->base = devm_ioremap_resource(dev, res);
@@ -1901,6 +1895,7 @@
.remove = usdhi6_remove,
.driver = {
.name = "usdhi6rol0",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
.of_match_table = usdhi6_of_match,
},
};
--
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