mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 20:46:49 +07:00
985b1aa05b
Implement an sdhci-pltfm driver for the controller found in the Marvell Dove SoC. Signed-off-by: Mike Rapoport <mike@compulab.co.il> CC: Saeed Bishara <saeed@marvell.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Chris Ball <cjb@laptop.org>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* sdhci-dove.c Support for SDHCI on Marvell's Dove SoC
|
|
*
|
|
* Author: Saeed Bishara <saeed@marvell.com>
|
|
* Mike Rapoport <mike@compulab.co.il>
|
|
* Based on sdhci-cns3xxx.c
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/mmc/host.h>
|
|
|
|
#include "sdhci.h"
|
|
#include "sdhci-pltfm.h"
|
|
|
|
static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
|
|
{
|
|
u16 ret;
|
|
|
|
switch (reg) {
|
|
case SDHCI_HOST_VERSION:
|
|
case SDHCI_SLOT_INT_STATUS:
|
|
/* those registers don't exist */
|
|
return 0;
|
|
default:
|
|
ret = readw(host->ioaddr + reg);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
|
|
{
|
|
u32 ret;
|
|
|
|
switch (reg) {
|
|
case SDHCI_CAPABILITIES:
|
|
ret = readl(host->ioaddr + reg);
|
|
/* Mask the support for 3.0V */
|
|
ret &= ~SDHCI_CAN_VDD_300;
|
|
break;
|
|
default:
|
|
ret = readl(host->ioaddr + reg);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static struct sdhci_ops sdhci_dove_ops = {
|
|
.read_w = sdhci_dove_readw,
|
|
.read_l = sdhci_dove_readl,
|
|
};
|
|
|
|
struct sdhci_pltfm_data sdhci_dove_pdata = {
|
|
.ops = &sdhci_dove_ops,
|
|
.quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
|
|
SDHCI_QUIRK_NO_BUSY_IRQ |
|
|
SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
|
|
SDHCI_QUIRK_FORCE_DMA,
|
|
};
|