[PATCH 10/41] ARM: omap1: move CF chipselect setup to board file

Arnd Bergmann
2022-04-19T14:21:08Z

There is only one board that uses the omap_cf driver, so
moving the chipselect configuration there does not lead
to code duplication but avoids the use of mach/tc.h
in drivers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/mach-omap1/board-osk.c | 38 ++++++++++++++++++++++++++++-----
drivers/pcmcia/Kconfig | 3 ++-
drivers/pcmcia/omap_cf.c | 38 ++++++---------------------------
3 files changed, 42 insertions(+), 37 deletions(-)

diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c
index b627a4351cf0..5dbc8f109aa7 100644
--- a/arch/arm/mach-omap1/board-osk.c
+++ b/arch/arm/mach-omap1/board-osk.c
@@ -153,14 +153,14 @@ static struct resource osk5912_cf_resources[] = {
[0] = {
.flags = IORESOURCE_IRQ,
},
+ [1] = {
+ .flags = IORESOURCE_MEM,
+ },
};

static struct platform_device osk5912_cf_device = {
.name = "omap_cf",
.id = -1,
- .dev = {
- .platform_data = (void *) 2 /* CS2 */,
- },
.num_resources = ARRAY_SIZE(osk5912_cf_resources),
.resource = osk5912_cf_resources,
};
@@ -275,13 +275,41 @@ static void __init osk_init_smc91x(void)
omap_writel(l, EMIFS_CCS(1));
}

-static void __init osk_init_cf(void)
+static void __init osk_init_cf(int seg)
{
+ struct resource *res = &osk5912_cf_resources[1];
+
omap_cfg_reg(M7_1610_GPIO62);
if ((gpio_request(62, "cf_irq")) < 0) {
printk("Error requesting gpio 62 for CF irq\n");
return;
}
+
+ switch (seg) {
+ /* NOTE: CS0 could be configured too ... */
+ case 1:
+ res->start = OMAP_CS1_PHYS;
+ break;
+ case 2:
+ res->start = OMAP_CS2_PHYS;
+ break;
+ case 3:
+ res->start = omap_cs3_phys();
+ break;
+ }
+
+ res->end = res->start + SZ_8K - 1;
+ osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg;
+
+ /* NOTE: better EMIFS setup might support more cards; but the
+ * TRM only shows how to affect regular flash signals, not their
+ * CF/PCMCIA variants...
+ */
+ pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__,
+ seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
+ omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */
+ omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */
+
/* the CF I/O IRQ is really active-low */
irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}
@@ -580,7 +608,7 @@ static void __init osk_init(void)
u32 l;

osk_init_smc91x();
- osk_init_cf();
+ osk_init_cf(2); /* CS2 */

/* Workaround for wrong CS3 (NOR flash) timing
* There are some U-Boot versions out there which configure
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 2ce261cfff8e..ec977f031bc2 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -246,7 +246,8 @@ config PCMCIA_VRC4171

config OMAP_CF
tristate "OMAP CompactFlash Controller"
- depends on PCMCIA && ARCH_OMAP16XX
+ depends on PCMCIA
+ depends on ARCH_OMAP16XX || (ARM && COMPILE_TEST)
help
Say Y here to support the CompactFlash controller on OMAP.
Note that this doesn't support "True IDE" mode.
diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c
index f0b2c2d03469..093022ce7d91 100644
--- a/drivers/pcmcia/omap_cf.c
+++ b/drivers/pcmcia/omap_cf.c
@@ -16,13 +16,12 @@

#include <pcmcia/ss.h>

-#include <mach/hardware.h>
#include <asm/io.h>
#include <linux/sizes.h>

-#include <mach/mux.h>
-#include <mach/tc.h>
-
+#include <linux/soc/ti/omap1-io.h>
+#include <linux/soc/ti/omap1-soc.h>
+#include <linux/soc/ti/omap1-mux.h>

/* NOTE: don't expect this to support many I/O cards. The 16xx chips have
* hard-wired timings to support Compact Flash memory cards; they won't work
@@ -205,6 +204,7 @@ static int __init omap_cf_probe(struct platform_device *pdev)
struct omap_cf_socket *cf;
int irq;
int status;
+ struct resource *res;

seg = (int) pdev->dev.platform_data;
if (seg == 0 || seg > 3)
@@ -215,6 +215,8 @@ static int __init omap_cf_probe(struct platform_device *pdev)
if (irq < 0)
return -EINVAL;

+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
cf = kzalloc(sizeof *cf, GFP_KERNEL);
if (!cf)
return -ENOMEM;
@@ -230,24 +232,7 @@ static int __init omap_cf_probe(struct platform_device *pdev)
goto fail0;
cf->irq = irq;
cf->socket.pci_irq = irq;
-
- switch (seg) {
- /* NOTE: CS0 could be configured too ... */
- case 1:
- cf->phys_cf = OMAP_CS1_PHYS;
- break;
- case 2:
- cf->phys_cf = OMAP_CS2_PHYS;
- break;
- case 3:
- cf->phys_cf = omap_cs3_phys();
- break;
- default:
- goto fail1;
- }
- cf->iomem.start = cf->phys_cf;
- cf->iomem.end = cf->iomem.end + SZ_8K - 1;
- cf->iomem.flags = IORESOURCE_MEM;
+ cf->phys_cf = res->start;

/* pcmcia layer only remaps "real" memory */
cf->socket.io_offset = (unsigned long)
@@ -273,15 +258,6 @@ static int __init omap_cf_probe(struct platform_device *pdev)

pr_info("%s: cs%d on irq %d\n", driver_name, seg, irq);

- /* NOTE: better EMIFS setup might support more cards; but the
- * TRM only shows how to affect regular flash signals, not their
- * CF/PCMCIA variants...
- */
- pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", driver_name,
- seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
- omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */
- omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */
-
/* CF uses armxor_ck, which is "always" available */

pr_debug("%s: sts %04x cfg %04x control %04x %s\n", driver_name,