ARM: pxa: Update Balloon3 for new FPGA firmware
The new FPGA firmware in Balloon3 uses different methods to control it's bus
control lines. In the new version, there are separate registers to set/clear
bus control lines. This patch updates affected places.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
index adb8e9f..d4649c0 100644
--- a/arch/arm/mach-pxa/balloon3.c
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -567,27 +567,29 @@
* NAND
******************************************************************************/
#if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
-static uint16_t balloon3_ctl =
- BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
- BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
- BALLOON3_NAND_CONTROL_FLWP;
-
static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
struct nand_chip *this = mtd->priv;
+ uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
if (ctrl & NAND_CTRL_CHANGE) {
if (ctrl & NAND_CLE)
- balloon3_ctl |= BALLOON3_NAND_CONTROL_FLCLE;
+ balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
else
- balloon3_ctl &= ~BALLOON3_NAND_CONTROL_FLCLE;
+ balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
if (ctrl & NAND_ALE)
- balloon3_ctl |= BALLOON3_NAND_CONTROL_FLALE;
+ balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
else
- balloon3_ctl &= ~BALLOON3_NAND_CONTROL_FLALE;
+ balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
- __raw_writel(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
+ if (balloon3_ctl_clr)
+ __raw_writel(balloon3_ctl_clr,
+ BALLOON3_NAND_CONTROL_REG);
+ if (balloon3_ctl_set)
+ __raw_writel(balloon3_ctl_set,
+ BALLOON3_NAND_CONTROL_REG |
+ BALLOON3_FPGA_SETnCLR);
}
if (cmd != NAND_CMD_NONE)
@@ -599,15 +601,15 @@
if (chip < 0 || chip > 3)
return;
- balloon3_ctl |= BALLOON3_NAND_CONTROL_FLCE0 |
- BALLOON3_NAND_CONTROL_FLCE1 |
- BALLOON3_NAND_CONTROL_FLCE2 |
- BALLOON3_NAND_CONTROL_FLCE3;
+ /* Assert all nCE lines */
+ __raw_writew(
+ BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
+ BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
+ BALLOON3_NAND_CONTROL_REG | BALLOON3_FPGA_SETnCLR);
/* Deassert correct nCE line */
- balloon3_ctl &= ~(BALLOON3_NAND_CONTROL_FLCE0 << chip);
-
- __raw_writew(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
+ __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
+ BALLOON3_NAND_CONTROL_REG);
}
static int balloon3_nand_probe(struct platform_device *pdev)
@@ -616,11 +618,12 @@
uint16_t ver;
int ret;
- __raw_writew(BALLOON3_NAND_CONTROL2_16BIT, BALLOON3_NAND_CONTROL2_REG);
+ __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
+ BALLOON3_NAND_CONTROL2_REG | BALLOON3_FPGA_SETnCLR);
ver = __raw_readw(BALLOON3_FPGA_VER);
- if (ver > 0x0201)
- pr_warn("The FPGA code, version 0x%04x, is newer than rel-0.3. "
+ if (ver < 0x4f08)
+ pr_warn("The FPGA code, version 0x%04x, is too old. "
"NAND support might be broken in this version!", ver);
/* Power up the NAND chips */
@@ -635,7 +638,11 @@
gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
/* Deassert all nCE lines and write protect line */
- __raw_writel(balloon3_ctl, BALLOON3_NAND_CONTROL_REG);
+ __raw_writel(
+ BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
+ BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
+ BALLOON3_NAND_CONTROL_FLWP,
+ BALLOON3_NAND_CONTROL_REG | BALLOON3_FPGA_SETnCLR);
return 0;
err2:
diff --git a/arch/arm/mach-pxa/include/mach/balloon3.h b/arch/arm/mach-pxa/include/mach/balloon3.h
index 3506da1..f6c81ea 100644
--- a/arch/arm/mach-pxa/include/mach/balloon3.h
+++ b/arch/arm/mach-pxa/include/mach/balloon3.h
@@ -26,6 +26,8 @@
#define BALLOON3_FPGA_VIRT (0xf1000000) /* as per balloon2 */
#define BALLOON3_FPGA_LENGTH 0x01000000
+#define BALLOON3_FPGA_SETnCLR (0x1000)
+
/* FPGA / CPLD registers for CF socket */
#define BALLOON3_CF_STATUS_REG (BALLOON3_FPGA_VIRT + 0x00e00008)
#define BALLOON3_CF_CONTROL_REG (BALLOON3_FPGA_VIRT + 0x00e00008)
diff --git a/drivers/pcmcia/pxa2xx_balloon3.c b/drivers/pcmcia/pxa2xx_balloon3.c
index dbbdd00..453c54c 100644
--- a/drivers/pcmcia/pxa2xx_balloon3.c
+++ b/drivers/pcmcia/pxa2xx_balloon3.c
@@ -39,12 +39,10 @@
static int balloon3_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
uint16_t ver;
- int ret;
- static void __iomem *fpga_ver;
ver = __raw_readw(BALLOON3_FPGA_VER);
- if (ver > 0x0201)
- pr_warn("The FPGA code, version 0x%04x, is newer than rel-0.3. "
+ if (ver < 0x4f08)
+ pr_warn("The FPGA code, version 0x%04x, is too old. "
"PCMCIA/CF support might be broken in this version!",
ver);
@@ -97,8 +95,9 @@
static int balloon3_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
- __raw_writew((state->flags & SS_RESET) ? BALLOON3_CF_RESET : 0,
- BALLOON3_CF_CONTROL_REG);
+ __raw_writew(BALLOON3_CF_RESET, BALLOON3_CF_CONTROL_REG |
+ ((state->flags & SS_RESET) ?
+ BALLOON3_FPGA_SETnCLR : 0));
return 0;
}