OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

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>
This commit is contained in:
Marek Vasut 2010-10-19 16:19:32 +02:00 committed by Eric Miao
parent e60f137b71
commit 1b9169d8a0
3 changed files with 35 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
arch/arm/mach-pxa/balloon3.c
View File

@ -567,27 +567,29 @@ static inline void balloon3_i2c_init(void) {}
* 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 @@ static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
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 @@ static int balloon3_nand_probe(struct platform_device *pdev)
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 @@ static int balloon3_nand_probe(struct platform_device *pdev)
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:

2
arch/arm/mach-pxa/include/mach/balloon3.h
View File

@ -26,6 +26,8 @@ enum balloon3_features {
#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)

11
drivers/pcmcia/pxa2xx_balloon3.c
View File

@ -39,12 +39,10 @@ static struct pcmcia_irqs irqs[] = {
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 void balloon3_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
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;
}