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m68knommu: fix problems with SPI/GPIO on ColdFire 520x 

The problem has its root in the calculation of the set-port offsets (macro
MCFGPIO_SETR() in arch/m68k/include/asm/gpio.h), this assumes that all ports
have the same offset from the base port address (MCFGPIO_SETR) which is
defined in mcf520xsim.h as an alias of MCFGIO_PSETR_BUSCTL. Because the BUSCTL
and BE port do not have a set-register (see MCF5208 Reference Manual Page
13-10, Table 13-3) the offset calculations went wrong.

Because the BE and BUSCTL port do not seem useful in these parts, as they
lack a set register, I removed them and adapted the gpio chip bases which
are also used for the offset-calculations. Now both setting and resetting
the chip selects works as expected from userland and from the kernelspace.

Signed-off-by: Peter Turczak <peter@turczak.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Peter Turczak 2011-08-09 14:11:19 +10:00 committed by Greg Ungerer
parent f230e80b42
commit 89127ed381
4 changed files with 27 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
arch/m68k/include/asm/m520xsim.h
View File

@ -90,15 +90,13 @@
#define MCFGPIO_PDDR_FECH 0xFC0A4013
#define MCFGPIO_PDDR_FECL 0xFC0A4014
#define MCFGPIO_PPDSDR_BUSCTL 0xFC0A401A
#define MCFGPIO_PPDSDR_BE 0xFC0A401B
#define MCFGPIO_PPDSDR_CS 0xFC0A401C
#define MCFGPIO_PPDSDR_FECI2C 0xFC0A401D
#define MCFGPIO_PPDSDR_QSPI 0xFC0A401E
#define MCFGPIO_PPDSDR_TIMER 0xFC0A401F
#define MCFGPIO_PPDSDR_UART 0xFC0A4021
#define MCFGPIO_PPDSDR_FECH 0xFC0A4021
#define MCFGPIO_PPDSDR_FECL 0xFC0A4022
#define MCFGPIO_PPDSDR_CS 0xFC0A401A
#define MCFGPIO_PPDSDR_FECI2C 0xFC0A401B
#define MCFGPIO_PPDSDR_QSPI 0xFC0A401C
#define MCFGPIO_PPDSDR_TIMER 0xFC0A401D
#define MCFGPIO_PPDSDR_UART 0xFC0A401E
#define MCFGPIO_PPDSDR_FECH 0xFC0A401F
#define MCFGPIO_PPDSDR_FECL 0xFC0A4020
#define MCFGPIO_PCLRR_BUSCTL 0xFC0A4024
#define MCFGPIO_PCLRR_BE 0xFC0A4025
@ -113,11 +111,11 @@
/*
* Generic GPIO support
*/
#define MCFGPIO_PODR MCFGPIO_PODR_BUSCTL
#define MCFGPIO_PDDR MCFGPIO_PDDR_BUSCTL
#define MCFGPIO_PPDR MCFGPIO_PPDSDR_BUSCTL
#define MCFGPIO_SETR MCFGPIO_PPDSDR_BUSCTL
#define MCFGPIO_CLRR MCFGPIO_PCLRR_BUSCTL
#define MCFGPIO_PODR MCFGPIO_PODR_CS
#define MCFGPIO_PDDR MCFGPIO_PDDR_CS
#define MCFGPIO_PPDR MCFGPIO_PPDSDR_CS
#define MCFGPIO_SETR MCFGPIO_PPDSDR_CS
#define MCFGPIO_CLRR MCFGPIO_PCLRR_CS
#define MCFGPIO_PIN_MAX 80
#define MCFGPIO_IRQ_MAX 8

4
arch/m68k/include/asm/mcfqspi.h
View File

@ -25,7 +25,9 @@
#define MCFQSPI_IOBASE (MCF_IPSBAR + 0x340)
#elif defined(CONFIG_M5249)
#define MCFQSPI_IOBASE (MCF_MBAR + 0x300)
#elif defined(CONFIG_M520x) || defined(CONFIG_M532x)
#elif defined(CONFIG_M520x)
#define MCFQSPI_IOBASE 0xFC05C000
#elif defined(CONFIG_M532x)
#define MCFQSPI_IOBASE 0xFC058000
#endif
#define MCFQSPI_IOSIZE 0x40

6
arch/m68k/platform/520x/config.c
View File

@ -91,9 +91,9 @@ static struct resource m520x_qspi_resources[] = {
},
};
#define MCFQSPI_CS0 62
#define MCFQSPI_CS1 63
#define MCFQSPI_CS2 44
#define MCFQSPI_CS0 46
#define MCFQSPI_CS1 47
#define MCFQSPI_CS2 27
static int m520x_cs_setup(struct mcfqspi_cs_control *cs_control)
{

50
arch/m68k/platform/520x/gpio.c
View File

@ -36,42 +36,6 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.podr = (void __iomem *) MCFEPORT_EPDR,
.ppdr = (void __iomem *) MCFEPORT_EPPDR,
},
{
.gpio_chip = {
.label = "BUSCTL",
.request = mcf_gpio_request,
.free = mcf_gpio_free,
.direction_input = mcf_gpio_direction_input,
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 8,
.ngpio = 4,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL,
.podr = (void __iomem *) MCFGPIO_PODR_BUSCTL,
.ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL,
.setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL,
.clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL,
},
{
.gpio_chip = {
.label = "BE",
.request = mcf_gpio_request,
.free = mcf_gpio_free,
.direction_input = mcf_gpio_direction_input,
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 16,
.ngpio = 4,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_BE,
.podr = (void __iomem *) MCFGPIO_PODR_BE,
.ppdr = (void __iomem *) MCFGPIO_PPDSDR_BE,
.setr = (void __iomem *) MCFGPIO_PPDSDR_BE,
.clrr = (void __iomem *) MCFGPIO_PCLRR_BE,
},
{
.gpio_chip = {
.label = "CS",
@ -81,7 +45,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 25,
.base = 9,
.ngpio = 3,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_CS,
@ -99,7 +63,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 32,
.base = 16,
.ngpio = 4,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C,
@ -117,7 +81,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 40,
.base = 24,
.ngpio = 4,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_QSPI,
@ -135,7 +99,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 48,
.base = 32,
.ngpio = 4,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_TIMER,
@ -153,7 +117,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 56,
.base = 40,
.ngpio = 8,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_UART,
@ -171,7 +135,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 64,
.base = 48,
.ngpio = 8,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_FECH,
@ -189,7 +153,7 @@ static struct mcf_gpio_chip mcf_gpio_chips[] = {
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value_fast,
.base = 72,
.base = 56,
.ngpio = 8,
},
.pddr = (void __iomem *) MCFGPIO_PDDR_FECL,