[PATCH 2/2] ARM: OMAP: HSMMC: Use macros instead of some magic constants.

Carlos Aguiar
2008-04-18T20:33:26Z

From: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>

This patch makes arch/arm/mach-omap2/board-sdp-hsmmc.c file to use macros
instead of some magic constants.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Francisco Alecrim <francisco.alecrim@indt.org.br>
Acked-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
Acked-by: Eduardo Valentin <eduardo.valentin@indt.org.br>
---
arch/arm/mach-omap2/board-sdp-hsmmc.c | 55 +++++++++++++++++++++++---------
1 files changed, 39 insertions(+), 16 deletions(-)

diff --git a/arch/arm/mach-omap2/board-sdp-hsmmc.c b/arch/arm/mach-omap2/board-sdp-hsmmc.c
index 355c1c0..d21af87 100644
--- a/arch/arm/mach-omap2/board-sdp-hsmmc.c
+++ b/arch/arm/mach-omap2/board-sdp-hsmmc.c
@@ -35,6 +35,16 @@
#define MMC1_CD_IRQ 0
#define MMC2_CD_IRQ 1

+#define OMAP2_CONTROL_DEVCONF0 0x48002274
+#define OMAP2_CONTROL_DEVCONF1 0x490022E8
+
+#define OMAP2_CONTROL_DEVCONF0_LBCLK (1 << 24)
+#define OMAP2_CONTROL_DEVCONF1_ACTOV (1 << 31)
+
+#define OMAP2_CONTROL_PBIAS_VMODE (1 << 0)
+#define OMAP2_CONTROL_PBIAS_PWRDNZ (1 << 1)
+#define OMAP2_CONTROL_PBIAS_SCTRL (1 << 2)
+
static int sdp_mmc_card_detect(int irq)
{
return twl4030_get_gpio_datain(irq - IH_TWL4030_GPIO_BASE);
@@ -158,32 +168,36 @@ static int sdp_mmc_set_power(struct device *dev, int slot, int power_on,

if (power_on) {
if (cpu_is_omap24xx())
- devconf = omap_readl(0x490022E8);
+ devconf = omap_readl(OMAP2_CONTROL_DEVCONF1);
else
- devconf = omap_readl(0x48002274);
+ devconf = omap_readl(OMAP2_CONTROL_DEVCONF0);

switch (1 << vdd) {
case MMC_VDD_33_34:
case MMC_VDD_32_33:
vdd_sel = VSEL_3V;
if (cpu_is_omap24xx())
- devconf = (devconf | (1 << 31));
+ devconf |= OMAP2_CONTROL_DEVCONF1_ACTOV;
break;
case MMC_VDD_165_195:
vdd_sel = VSEL_18V;
if (cpu_is_omap24xx())
- devconf = (devconf & ~(1 << 31));
+ devconf &= ~OMAP2_CONTROL_DEVCONF1_ACTOV;
}

if (cpu_is_omap24xx())
- omap_writel(devconf, 0x490022E8);
+ omap_writel(devconf, OMAP2_CONTROL_DEVCONF1);
else
- omap_writel(devconf | 1 << 24, 0x48002274);
+ omap_writel(devconf | OMAP2_CONTROL_DEVCONF0_LBCLK,
+ OMAP2_CONTROL_DEVCONF0);

- omap_writel(omap_readl(OMAP2_CONTROL_PBIAS) | 1 << 2,
- OMAP2_CONTROL_PBIAS);
- omap_writel(omap_readl(OMAP2_CONTROL_PBIAS) & ~(1 << 1),
- OMAP2_CONTROL_PBIAS);
+ reg = omap_readl(OMAP2_CONTROL_PBIAS);
+ reg |= OMAP2_CONTROL_PBIAS_SCTRL;
+ omap_writel(reg, OMAP2_CONTROL_PBIAS);
+
+ reg = omap_readl(OMAP2_CONTROL_PBIAS);
+ reg &= ~OMAP2_CONTROL_PBIAS_PWRDNZ;
+ omap_writel(reg, OMAP2_CONTROL_PBIAS);

ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
P1_DEV_GRP, VMMC1_DEV_GRP);
@@ -197,8 +211,12 @@ static int sdp_mmc_set_power(struct device *dev, int slot, int power_on,

msleep(100);
reg = omap_readl(OMAP2_CONTROL_PBIAS);
- reg = (vdd_sel == VSEL_18V) ? ((reg | 0x6) & ~0x1)
- : (reg | 0x7);
+ reg |= (OMAP2_CONTROL_PBIAS_SCTRL |
+ OMAP2_CONTROL_PBIAS_PWRDNZ);
+ if (vdd_sel == VSEL_18V)
+ reg &= ~OMAP2_CONTROL_PBIAS_VMODE;
+ else
+ reg |= OMAP2_CONTROL_PBIAS_VMODE;
omap_writel(reg, OMAP2_CONTROL_PBIAS);

return ret;
@@ -207,8 +225,10 @@ static int sdp_mmc_set_power(struct device *dev, int slot, int power_on,
/* Power OFF */

/* For MMC1, Toggle PBIAS before every power up sequence */
- omap_writel(omap_readl(OMAP2_CONTROL_PBIAS) & ~(1 << 1),
- OMAP2_CONTROL_PBIAS);
+ reg = omap_readl(OMAP2_CONTROL_PBIAS);
+ reg &= ~OMAP2_CONTROL_PBIAS_PWRDNZ;
+ omap_writel(reg, OMAP2_CONTROL_PBIAS);
+
ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
LDO_CLR, VMMC1_DEV_GRP);
if (ret)
@@ -221,8 +241,11 @@ static int sdp_mmc_set_power(struct device *dev, int slot, int power_on,

/* 100ms delay required for PBIAS configuration */
msleep(100);
- omap_writel(omap_readl(OMAP2_CONTROL_PBIAS) | 0x7,
- OMAP2_CONTROL_PBIAS);
+ reg = omap_readl(OMAP2_CONTROL_PBIAS);
+ reg |= (OMAP2_CONTROL_PBIAS_VMODE |
+ OMAP2_CONTROL_PBIAS_PWRDNZ |
+ OMAP2_CONTROL_PBIAS_SCTRL);
+ omap_writel(reg, OMAP2_CONTROL_PBIAS);
}

return 0;
-- 1.5.3.GIT