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mmc: mmci: Enforce DMA configuration through DT

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Remove the option to provide DMA configuration as platform data,
enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Ulf Hansson 2014-05-20 06:45:54 +02:00
parent 5080a08d0f
commit 8c3a05b489
3 changed files with 1 additions and 43 deletions
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3
arch/arm/mach-lpc32xx/phy3250.c
View file

@ -202,9 +202,6 @@ static struct mmci_platform_data lpc32xx_mmci_data = {
.ocr_mask = MMC_VDD_30_31 | MMC_VDD_31_32 |
MMC_VDD_32_33 | MMC_VDD_33_34,
.ios_handler = mmc_handle_ios,
.dma_filter = NULL,
/* No DMA for now since AMBA PL080 dmaengine driver only does scatter
* gather, and the MMCI driver doesn't do it this way */
};
static struct lpc32xx_slc_platform_data lpc32xx_slc_data = {

24
drivers/mmc/host/mmci.c
View file

@ -366,7 +366,6 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
#ifdef CONFIG_DMA_ENGINE
static void mmci_dma_setup(struct mmci_host *host)
{
struct mmci_platform_data *plat = host->plat;
const char *rxname, *txname;
dma_cap_mask_t mask;
@ -380,25 +379,6 @@ static void mmci_dma_setup(struct mmci_host *host)
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
if (plat && plat->dma_filter) {
if (!host->dma_rx_channel && plat->dma_rx_param) {
host->dma_rx_channel = dma_request_channel(mask,
plat->dma_filter,
plat->dma_rx_param);
/* E.g if no DMA hardware is present */
if (!host->dma_rx_channel)
dev_err(mmc_dev(host->mmc), "no RX DMA channel\n");
}
if (!host->dma_tx_channel && plat->dma_tx_param) {
host->dma_tx_channel = dma_request_channel(mask,
plat->dma_filter,
plat->dma_tx_param);
if (!host->dma_tx_channel)
dev_warn(mmc_dev(host->mmc), "no TX DMA channel\n");
}
}
/*
* If only an RX channel is specified, the driver will
* attempt to use it bidirectionally, however if it is
@ -446,11 +426,9 @@ static void mmci_dma_setup(struct mmci_host *host)
*/
static inline void mmci_dma_release(struct mmci_host *host)
{
struct mmci_platform_data *plat = host->plat;
if (host->dma_rx_channel)
dma_release_channel(host->dma_rx_channel);
if (host->dma_tx_channel && plat->dma_tx_param)
if (host->dma_tx_channel)
dma_release_channel(host->dma_tx_channel);
host->dma_rx_channel = host->dma_tx_channel = NULL;
}

17
include/linux/amba/mmci.h
View file

@ -6,9 +6,6 @@
#include <linux/mmc/host.h>
/* Just some dummy forwarding */
struct dma_chan;
/**
* struct mmci_platform_data - platform configuration for the MMCI
* (also known as PL180) block.
@ -26,17 +23,6 @@ struct dma_chan;
* @gpio_wp: read this GPIO pin to see if the card is write protected
* @gpio_cd: read this GPIO pin to detect card insertion
* @cd_invert: true if the gpio_cd pin value is active low
* @dma_filter: function used to select an appropriate RX and TX
* DMA channel to be used for DMA, if and only if you're deploying the
* generic DMA engine
* @dma_rx_param: parameter passed to the DMA allocation
* filter in order to select an appropriate RX channel. If
* there is a bidirectional RX+TX channel, then just specify
* this and leave dma_tx_param set to NULL
* @dma_tx_param: parameter passed to the DMA allocation
* filter in order to select an appropriate TX channel. If this
* is NULL the driver will attempt to use the RX channel as a
* bidirectional channel
*/
struct mmci_platform_data {
unsigned int ocr_mask;
@ -45,9 +31,6 @@ struct mmci_platform_data {
int gpio_wp;
int gpio_cd;
bool cd_invert;
bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
void *dma_rx_param;
void *dma_tx_param;
};
#endif