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Date: Fri, 6 Oct 2017 15:21:28 -0400
From: Liming Sun <lsun@...lanox.com>
To: Jaehoon Chung <jh80.chung@...sung.com>,
Ulf Hansson <ulf.hansson@...aro.org>
Cc: Liming Sun <lsun@...lanox.com>, linux-mmc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 5/9] Revert "mmc: dw_mmc: change the array of slots"
This reverts commit b23475faed77f6a9016013c8db6b4707466e74a8.
The Mellanox BlueField SoC requires multiple slot dw-mmc support.
Signed-off-by: Liming Sun <lsun@...lanox.com>
---
drivers/mmc/host/dw_mmc.c | 21 ++++++++++++---------
drivers/mmc/host/dw_mmc.h | 4 +++-
2 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index a4356d6..d11b8d7 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2582,7 +2582,8 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
static void dw_mci_handle_cd(struct dw_mci *host)
{
- struct dw_mci_slot *slot = host->slot;
+ int i = 0;
+ struct dw_mci_slot *slot = host->slot[i];
if (slot->mmc->ops->card_event)
slot->mmc->ops->card_event(slot->mmc);
@@ -2594,7 +2595,8 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
{
struct dw_mci *host = dev_id;
u32 pending;
- struct dw_mci_slot *slot = host->slot;
+ int i = 0;
+ struct dw_mci_slot *slot = host->slot[i];
pending = mci_readl(host, MINTSTS); /* read-only mask reg */
@@ -2726,7 +2728,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
slot->sdio_id = host->sdio_id0 + id;
slot->mmc = mmc;
slot->host = host;
- host->slot = slot;
+ host->slot[id] = slot;
mmc->ops = &dw_mci_ops;
if (device_property_read_u32_array(host->dev, "clock-freq-min-max",
@@ -2826,7 +2828,7 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
{
/* Debugfs stuff is cleaned up by mmc core */
mmc_remove_host(slot->mmc);
- slot->host->slot = NULL;
+ slot->host->slot[id] = NULL;
mmc_free_host(slot->mmc);
}
@@ -3041,13 +3043,14 @@ static void dw_mci_enable_cd(struct dw_mci *host)
{
unsigned long irqflags;
u32 temp;
+ int i = 0;
struct dw_mci_slot *slot;
/*
* No need for CD if all slots have a non-error GPIO
* as well as broken card detection is found.
*/
- slot = host->slot;
+ slot = host->slot[i];
if (slot->mmc->caps & MMC_CAP_NEEDS_POLL)
return;
@@ -3278,8 +3281,8 @@ void dw_mci_remove(struct dw_mci *host)
int i = 0;
dev_dbg(host->dev, "remove slot %d\n", i);
- if (host->slot)
- dw_mci_cleanup_slot(host->slot, i);
+ if (host->slot[i])
+ dw_mci_cleanup_slot(host->slot[i], i);
mci_writel(host, RINTSTS, 0xFFFFFFFF);
mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
@@ -3322,9 +3325,9 @@ int dw_mci_runtime_suspend(struct device *dev)
int dw_mci_runtime_resume(struct device *dev)
{
- int ret = 0;
+ int i = 0, ret = 0;
struct dw_mci *host = dev_get_drvdata(dev);
- struct dw_mci_slot *slot = host->slot;
+ struct dw_mci_slot *slot = host->slot[i];
if (host->cur_slot &&
(mmc_can_gpio_cd(host->cur_slot->mmc) ||
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 20a956e..e62cafc 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -20,6 +20,8 @@
#include <linux/reset.h>
#include <linux/interrupt.h>
+#define MAX_MCI_SLOTS 2
+
enum dw_mci_state {
STATE_IDLE = 0,
STATE_SENDING_CMD,
@@ -214,7 +216,7 @@ struct dw_mci {
void *priv;
struct clk *biu_clk;
struct clk *ciu_clk;
- struct dw_mci_slot *slot;
+ struct dw_mci_slot *slot[MAX_MCI_SLOTS];
/* FIFO push and pull */
int fifo_depth;
--
1.8.3.1
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