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mmc: sdhci-esdhc-imx: do not reference platform data after probe 

The patch copies platform data into pltfm_imx_data and reference
the data there than platform data after probe.

This work is inspired by Grant Likely and Troy Kisky.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Chris Ball <cjb@laptop.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Shawn Guo 2011-07-06 22:57:48 +08:00
parent 913413c307
commit 842afc02cf
1 changed files with 13 additions and 9 deletions
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22
drivers/mmc/host/sdhci-esdhc-imx.c
View File

@ -45,6 +45,7 @@
struct pltfm_imx_data {
int flags;
u32 scratchpad;
struct esdhc_platform_data boarddata;
};
static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, int reg)
@ -57,8 +58,9 @@ static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, i
static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
{
struct esdhc_platform_data *boarddata =
host->mmc->parent->platform_data;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
/* fake CARD_PRESENT flag */
u32 val = readl(host->ioaddr + reg);
@ -80,8 +82,7 @@ static void esdhc_writel_le(struct sdhci_host *host, u32 val, int reg)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata =
host->mmc->parent->platform_data;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
if (unlikely((reg == SDHCI_INT_ENABLE || reg == SDHCI_SIGNAL_ENABLE)
&& (boarddata->cd_type == ESDHC_CD_GPIO)))
@ -198,8 +199,9 @@ static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host)
static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
{
struct esdhc_platform_data *boarddata =
host->mmc->parent->platform_data;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
switch (boarddata->wp_type) {
case ESDHC_WP_GPIO:
@ -281,12 +283,14 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
if (!(cpu_is_mx25() || cpu_is_mx35() || cpu_is_mx51()))
imx_data->flags |= ESDHC_FLAG_MULTIBLK_NO_INT;
boarddata = host->mmc->parent->platform_data;
if (!boarddata) {
if (!host->mmc->parent->platform_data) {
dev_err(mmc_dev(host->mmc), "no board data!\n");
err = -EINVAL;
goto no_board_data;
}
imx_data->boarddata = *((struct esdhc_platform_data *)
host->mmc->parent->platform_data);
boarddata = &imx_data->boarddata;
/* write_protect */
if (boarddata->wp_type == ESDHC_WP_GPIO) {
@ -363,8 +367,8 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct esdhc_platform_data *boarddata = host->mmc->parent->platform_data;
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
sdhci_remove_host(host, dead);