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mmc: dw_mmc: remove the quirks flags 

Remove the quirks flag. (DW_MCI_QUIRK_BROKEN_DTO)
For removing this, enabled the dto_timer by defaults.
It doesn't see any I/O performance degression.
In future, dwmmc controller should not use the quirks flag.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
steinar/wifi_calib_4_9_kernel
Jaehoon Chung 2016-06-21 14:35:37 +09:00 committed by Ulf Hansson
parent e5a613537c
commit 16a34574c6
3 changed files with 5 additions and 23 deletions
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3
drivers/mmc/host/dw_mmc-rockchip.c
View File

@ -285,9 +285,6 @@ static int dw_mci_rockchip_init(struct dw_mci *host)
/* It is slot 8 on Rockchip SoCs */
host->sdio_id0 = 8;
/* It needs this quirk on all Rockchip SoCs */
host->pdata->quirks |= DW_MCI_QUIRK_BROKEN_DTO;
if (of_device_is_compatible(host->dev->of_node,
"rockchip,rk3288-dw-mshc"))
host->bus_hz /= RK3288_CLKGEN_DIV;

16
drivers/mmc/host/dw_mmc.c
View File

@ -1824,8 +1824,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
* If all data-related interrupts don't come
* within the given time in reading data state.
*/
if ((host->quirks & DW_MCI_QUIRK_BROKEN_DTO) &&
(host->dir_status == DW_MCI_RECV_STATUS))
if (host->dir_status == DW_MCI_RECV_STATUS)
dw_mci_set_drto(host);
break;
}
@ -1867,8 +1866,7 @@ static void dw_mci_tasklet_func(unsigned long priv)
* interrupt doesn't come within the given time.
* in reading data state.
*/
if ((host->quirks & DW_MCI_QUIRK_BROKEN_DTO) &&
(host->dir_status == DW_MCI_RECV_STATUS))
if (host->dir_status == DW_MCI_RECV_STATUS)
dw_mci_set_drto(host);
break;
}
@ -2434,8 +2432,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
}
if (pending & SDMMC_INT_DATA_OVER) {
if (host->quirks & DW_MCI_QUIRK_BROKEN_DTO)
del_timer(&host->dto_timer);
del_timer(&host->dto_timer);
mci_writel(host, RINTSTS, SDMMC_INT_DATA_OVER);
if (!host->data_status)
@ -3026,11 +3023,8 @@ int dw_mci_probe(struct dw_mci *host)
setup_timer(&host->cmd11_timer,
dw_mci_cmd11_timer, (unsigned long)host);
host->quirks = host->pdata->quirks;
if (host->quirks & DW_MCI_QUIRK_BROKEN_DTO)
setup_timer(&host->dto_timer,
dw_mci_dto_timer, (unsigned long)host);
setup_timer(&host->dto_timer,
dw_mci_dto_timer, (unsigned long)host);
spin_lock_init(&host->lock);
spin_lock_init(&host->irq_lock);

9
include/linux/mmc/dw_mmc.h
View File

@ -112,7 +112,6 @@ struct dw_mci_dma_slave {
* @part_buf: Simple buffer for partial fifo reads/writes.
* @push_data: Pointer to FIFO push function.
* @pull_data: Pointer to FIFO pull function.
* @quirks: Set of quirks that apply to specific versions of the IP.
* @vqmmc_enabled: Status of vqmmc, should be true or false.
* @irq_flags: The flags to be passed to request_irq.
* @irq: The irq value to be passed to request_irq.
@ -218,9 +217,6 @@ struct dw_mci {
void (*push_data)(struct dw_mci *host, void *buf, int cnt);
void (*pull_data)(struct dw_mci *host, void *buf, int cnt);
/* Workaround flags */
u32 quirks;
bool vqmmc_enabled;
unsigned long irq_flags; /* IRQ flags */
int irq;
@ -242,17 +238,12 @@ struct dw_mci_dma_ops {
void (*exit)(struct dw_mci *host);
};
/* IP Quirks/flags. */
/* Timer for broken data transfer over scheme */
#define DW_MCI_QUIRK_BROKEN_DTO BIT(0)
struct dma_pdata;
/* Board platform data */
struct dw_mci_board {
u32 num_slots;
u32 quirks; /* Workaround / Quirk flags */
unsigned int bus_hz; /* Clock speed at the cclk_in pad */
u32 caps; /* Capabilities */