korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-20 02:34:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

ARM: 7217/1: mmc: mmci: Put power register deviations in variant data

Browse Source 
Use variant data to store hardware controller deviations concerning
power registers to improve readability of the code.

Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ulf Hansson 2011-12-13 16:54:55 +01:00 committed by Russell King
parent 5074d25dc9
commit 7d72a1d48a
1 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/mmc/host/mmci.c
View File

@ -53,6 +53,7 @@ static unsigned int fmax = 515633;
* @sdio: variant supports SDIO
* @st_clkdiv: true if using a ST-specific clock divider algorithm
* @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
* @pwrreg_powerup: power up value for MMCIPOWER register
*/
struct variant_data {
unsigned int clkreg;
@ -63,18 +64,21 @@ struct variant_data {
bool sdio;
bool st_clkdiv;
bool blksz_datactrl16;
u32 pwrreg_powerup;
};
static struct variant_data variant_arm = {
.fifosize = 16 * 4,
.fifohalfsize = 8 * 4,
.datalength_bits = 16,
.pwrreg_powerup = MCI_PWR_UP,
};
static struct variant_data variant_arm_extended_fifo = {
.fifosize = 128 * 4,
.fifohalfsize = 64 * 4,
.datalength_bits = 16,
.pwrreg_powerup = MCI_PWR_UP,
};
static struct variant_data variant_u300 = {
@ -83,6 +87,7 @@ static struct variant_data variant_u300 = {
.clkreg_enable = MCI_ST_U300_HWFCEN,
.datalength_bits = 16,
.sdio = true,
.pwrreg_powerup = MCI_PWR_ON,
};
static struct variant_data variant_ux500 = {
@ -93,6 +98,7 @@ static struct variant_data variant_ux500 = {
.datalength_bits = 24,
.sdio = true,
.st_clkdiv = true,
.pwrreg_powerup = MCI_PWR_ON,
};
static struct variant_data variant_ux500v2 = {
@ -104,6 +110,7 @@ static struct variant_data variant_ux500v2 = {
.sdio = true,
.st_clkdiv = true,
.blksz_datactrl16 = true,
.pwrreg_powerup = MCI_PWR_ON,
};
/*
@ -1009,6 +1016,7 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct mmci_host *host = mmc_priv(mmc);
struct variant_data *variant = host->variant;
u32 pwr = 0;
unsigned long flags;
int ret;
@ -1035,11 +1043,15 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (host->plat->vdd_handler)
pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
ios->power_mode);
/* The ST version does not have this, fall through to POWER_ON */
if (host->hw_designer != AMBA_VENDOR_ST) {
pwr |= MCI_PWR_UP;
break;
}
/*
* The ST Micro variant doesn't have the PL180s MCI_PWR_UP
* and instead uses MCI_PWR_ON so apply whatever value is
* configured in the variant data.
*/
pwr |= variant->pwrreg_powerup;
break;
case MMC_POWER_ON:
pwr |= MCI_PWR_ON;
break;