mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 15:40:53 +07:00
mmc: dw_mmc: modify DATA register offset
In dw_mmc 2.40a spec, Data register's offset is changed. Before we used Data register offset 0x100. but if somebody uses a 2.40a controller, we must use 0x200 for Data register. This patch adds a version-id checking point and uses SDMMC_DATA(x) instead of SDMMC_DATA. It assumes 2.40a is the latest version. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Jaehoon Chung
Chris Ball
parent
c43fd77466
commit
4e0a5adf46
@ -1043,7 +1043,8 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
|
||||
buf += len;
|
||||
cnt -= len;
|
||||
if (!sg_next(host->sg) || host->part_buf_count == 2) {
|
||||
mci_writew(host, DATA, host->part_buf16);
|
||||
mci_writew(host, DATA(host->data_offset),
|
||||
host->part_buf16);
|
||||
host->part_buf_count = 0;
|
||||
}
|
||||
}
|
||||
@ -1060,21 +1061,23 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
|
||||
cnt -= len;
|
||||
/* push data from aligned buffer into fifo */
|
||||
for (i = 0; i < items; ++i)
|
||||
mci_writew(host, DATA, aligned_buf[i]);
|
||||
mci_writew(host, DATA(host->data_offset),
|
||||
aligned_buf[i]);
|
||||
}
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
u16 *pdata = buf;
|
||||
for (; cnt >= 2; cnt -= 2)
|
||||
mci_writew(host, DATA, *pdata++);
|
||||
mci_writew(host, DATA(host->data_offset), *pdata++);
|
||||
buf = pdata;
|
||||
}
|
||||
/* put anything remaining in the part_buf */
|
||||
if (cnt) {
|
||||
dw_mci_set_part_bytes(host, buf, cnt);
|
||||
if (!sg_next(host->sg))
|
||||
mci_writew(host, DATA, host->part_buf16);
|
||||
mci_writew(host, DATA(host->data_offset),
|
||||
host->part_buf16);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1089,7 +1092,8 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
|
||||
int items = len >> 1;
|
||||
int i;
|
||||
for (i = 0; i < items; ++i)
|
||||
aligned_buf[i] = mci_readw(host, DATA);
|
||||
aligned_buf[i] = mci_readw(host,
|
||||
DATA(host->data_offset));
|
||||
/* memcpy from aligned buffer into output buffer */
|
||||
memcpy(buf, aligned_buf, len);
|
||||
buf += len;
|
||||
@ -1100,11 +1104,11 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
|
||||
{
|
||||
u16 *pdata = buf;
|
||||
for (; cnt >= 2; cnt -= 2)
|
||||
*pdata++ = mci_readw(host, DATA);
|
||||
*pdata++ = mci_readw(host, DATA(host->data_offset));
|
||||
buf = pdata;
|
||||
}
|
||||
if (cnt) {
|
||||
host->part_buf16 = mci_readw(host, DATA);
|
||||
host->part_buf16 = mci_readw(host, DATA(host->data_offset));
|
||||
dw_mci_pull_final_bytes(host, buf, cnt);
|
||||
}
|
||||
}
|
||||
@ -1117,7 +1121,8 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
|
||||
buf += len;
|
||||
cnt -= len;
|
||||
if (!sg_next(host->sg) || host->part_buf_count == 4) {
|
||||
mci_writel(host, DATA, host->part_buf32);
|
||||
mci_writel(host, DATA(host->data_offset),
|
||||
host->part_buf32);
|
||||
host->part_buf_count = 0;
|
||||
}
|
||||
}
|
||||
@ -1134,21 +1139,23 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
|
||||
cnt -= len;
|
||||
/* push data from aligned buffer into fifo */
|
||||
for (i = 0; i < items; ++i)
|
||||
mci_writel(host, DATA, aligned_buf[i]);
|
||||
mci_writel(host, DATA(host->data_offset),
|
||||
aligned_buf[i]);
|
||||
}
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
u32 *pdata = buf;
|
||||
for (; cnt >= 4; cnt -= 4)
|
||||
mci_writel(host, DATA, *pdata++);
|
||||
mci_writel(host, DATA(host->data_offset), *pdata++);
|
||||
buf = pdata;
|
||||
}
|
||||
/* put anything remaining in the part_buf */
|
||||
if (cnt) {
|
||||
dw_mci_set_part_bytes(host, buf, cnt);
|
||||
if (!sg_next(host->sg))
|
||||
mci_writel(host, DATA, host->part_buf32);
|
||||
mci_writel(host, DATA(host->data_offset),
|
||||
host->part_buf32);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1163,7 +1170,8 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
|
||||
int items = len >> 2;
|
||||
int i;
|
||||
for (i = 0; i < items; ++i)
|
||||
aligned_buf[i] = mci_readl(host, DATA);
|
||||
aligned_buf[i] = mci_readl(host,
|
||||
DATA(host->data_offset));
|
||||
/* memcpy from aligned buffer into output buffer */
|
||||
memcpy(buf, aligned_buf, len);
|
||||
buf += len;
|
||||
@ -1174,11 +1182,11 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
|
||||
{
|
||||
u32 *pdata = buf;
|
||||
for (; cnt >= 4; cnt -= 4)
|
||||
*pdata++ = mci_readl(host, DATA);
|
||||
*pdata++ = mci_readl(host, DATA(host->data_offset));
|
||||
buf = pdata;
|
||||
}
|
||||
if (cnt) {
|
||||
host->part_buf32 = mci_readl(host, DATA);
|
||||
host->part_buf32 = mci_readl(host, DATA(host->data_offset));
|
||||
dw_mci_pull_final_bytes(host, buf, cnt);
|
||||
}
|
||||
}
|
||||
@ -1191,7 +1199,8 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
|
||||
buf += len;
|
||||
cnt -= len;
|
||||
if (!sg_next(host->sg) || host->part_buf_count == 8) {
|
||||
mci_writew(host, DATA, host->part_buf);
|
||||
mci_writew(host, DATA(host->data_offset),
|
||||
host->part_buf);
|
||||
host->part_buf_count = 0;
|
||||
}
|
||||
}
|
||||
@ -1208,21 +1217,23 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
|
||||
cnt -= len;
|
||||
/* push data from aligned buffer into fifo */
|
||||
for (i = 0; i < items; ++i)
|
||||
mci_writeq(host, DATA, aligned_buf[i]);
|
||||
mci_writeq(host, DATA(host->data_offset),
|
||||
aligned_buf[i]);
|
||||
}
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
u64 *pdata = buf;
|
||||
for (; cnt >= 8; cnt -= 8)
|
||||
mci_writeq(host, DATA, *pdata++);
|
||||
mci_writeq(host, DATA(host->data_offset), *pdata++);
|
||||
buf = pdata;
|
||||
}
|
||||
/* put anything remaining in the part_buf */
|
||||
if (cnt) {
|
||||
dw_mci_set_part_bytes(host, buf, cnt);
|
||||
if (!sg_next(host->sg))
|
||||
mci_writeq(host, DATA, host->part_buf);
|
||||
mci_writeq(host, DATA(host->data_offset),
|
||||
host->part_buf);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1237,7 +1248,8 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
|
||||
int items = len >> 3;
|
||||
int i;
|
||||
for (i = 0; i < items; ++i)
|
||||
aligned_buf[i] = mci_readq(host, DATA);
|
||||
aligned_buf[i] = mci_readq(host,
|
||||
DATA(host->data_offset));
|
||||
/* memcpy from aligned buffer into output buffer */
|
||||
memcpy(buf, aligned_buf, len);
|
||||
buf += len;
|
||||
@ -1248,11 +1260,11 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
|
||||
{
|
||||
u64 *pdata = buf;
|
||||
for (; cnt >= 8; cnt -= 8)
|
||||
*pdata++ = mci_readq(host, DATA);
|
||||
*pdata++ = mci_readq(host, DATA(host->data_offset));
|
||||
buf = pdata;
|
||||
}
|
||||
if (cnt) {
|
||||
host->part_buf = mci_readq(host, DATA);
|
||||
host->part_buf = mci_readq(host, DATA(host->data_offset));
|
||||
dw_mci_pull_final_bytes(host, buf, cnt);
|
||||
}
|
||||
}
|
||||
@ -1951,6 +1963,18 @@ static int dw_mci_probe(struct platform_device *pdev)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* In 2.40a spec, Data offset is changed.
|
||||
* Need to check the version-id and set data-offset for DATA register.
|
||||
*/
|
||||
host->verid = SDMMC_GET_VERID(mci_readl(host, VERID));
|
||||
dev_info(&pdev->dev, "Version ID is %04x\n", host->verid);
|
||||
|
||||
if (host->verid < DW_MMC_240A)
|
||||
host->data_offset = DATA_OFFSET;
|
||||
else
|
||||
host->data_offset = DATA_240A_OFFSET;
|
||||
|
||||
/*
|
||||
* Enable interrupts for command done, data over, data empty, card det,
|
||||
* receive ready and error such as transmit, receive timeout, crc error
|
||||
|
||||
@ -14,6 +14,8 @@
|
||||
#ifndef _DW_MMC_H_
|
||||
#define _DW_MMC_H_
|
||||
|
||||
#define DW_MMC_240A 0x240a
|
||||
|
||||
#define SDMMC_CTRL 0x000
|
||||
#define SDMMC_PWREN 0x004
|
||||
#define SDMMC_CLKDIV 0x008
|
||||
@ -51,7 +53,14 @@
|
||||
#define SDMMC_IDINTEN 0x090
|
||||
#define SDMMC_DSCADDR 0x094
|
||||
#define SDMMC_BUFADDR 0x098
|
||||
#define SDMMC_DATA 0x100
|
||||
#define SDMMC_DATA(x) (x)
|
||||
|
||||
/*
|
||||
* Data offset is difference according to Version
|
||||
* Lower than 2.40a : data register offest is 0x100
|
||||
*/
|
||||
#define DATA_OFFSET 0x100
|
||||
#define DATA_240A_OFFSET 0x200
|
||||
|
||||
/* shift bit field */
|
||||
#define _SBF(f, v) ((v) << (f))
|
||||
@ -130,6 +139,8 @@
|
||||
#define SDMMC_IDMAC_ENABLE BIT(7)
|
||||
#define SDMMC_IDMAC_FB BIT(1)
|
||||
#define SDMMC_IDMAC_SWRESET BIT(0)
|
||||
/* Version ID register define */
|
||||
#define SDMMC_GET_VERID(x) ((x) & 0xFFFF)
|
||||
|
||||
/* Register access macros */
|
||||
#define mci_readl(dev, reg) \
|
||||
|
||||
@ -72,6 +72,8 @@ struct mmc_data;
|
||||
* rate and timeout calculations.
|
||||
* @current_speed: Configured rate of the controller.
|
||||
* @num_slots: Number of slots available.
|
||||
* @verid: Denote Version ID.
|
||||
* @data_offset: Set the offset of DATA register according to VERID.
|
||||
* @pdev: Platform device associated with the MMC controller.
|
||||
* @pdata: Platform data associated with the MMC controller.
|
||||
* @slot: Slots sharing this MMC controller.
|
||||
@ -147,6 +149,8 @@ struct dw_mci {
|
||||
u32 current_speed;
|
||||
u32 num_slots;
|
||||
u32 fifoth_val;
|
||||
u16 verid;
|
||||
u16 data_offset;
|
||||
struct platform_device *pdev;
|
||||
struct dw_mci_board *pdata;
|
||||
struct dw_mci_slot *slot[MAX_MCI_SLOTS];
|
||||
|
||||
Loading…
Reference in New Issue
Block a user