ARM: OMAP2/3: Add generic smc91x support when connected to GPMC

Convert the board-rx51 smc91x code to be generic and make
the boards to use it. This allows future recalculation of the
timings when the source clock gets scaled.

Also correct the rx51 interrupt to be IORESOURCE_IRQ_HIGHLEVEL.

Thanks to Paul Walmsley <paul@pwsan.com> for better GPMC timing
calculations.

Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 22 insertions, 81 deletions

diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 22143651037..ef70b79942c 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -36,14 +36,11 @@
 #include <mach/common.h>
 #include <mach/gpmc.h>
 #include <mach/usb.h>
+#include <mach/gpmc-smc91x.h>
 
 #include "mmc-twl4030.h"
 
 #define SDP2430_CS0_BASE        0x04000000
-#define SDP2430_FLASH_CS        0
-#define SDP2430_SMC91X_CS       5
-
-#define SDP2430_ETHR_GPIO_IRQ           149
 
 static struct mtd_partition sdp2430_partitions[] = {
         /* bootloader (U-Boot, etc) in first sector */
@@ -99,100 +96,43 @@ static struct platform_device sdp2430_flash_device = {
         .resource       = &sdp2430_flash_resource,
 };
 
-static struct resource sdp2430_smc91x_resources[] = {
-        [0] = {
-                .start  = SDP2430_CS0_BASE,
-                .end    = SDP2430_CS0_BASE + SZ_64M - 1,
-                .flags  = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start  = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
-                .end    = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
-                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
-        },
-};
-
-static struct platform_device sdp2430_smc91x_device = {
-        .name           = "smc91x",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
-        .resource       = sdp2430_smc91x_resources,
-};
-
 static struct platform_device *sdp2430_devices[] __initdata = {
-        &sdp2430_smc91x_device,
         &sdp2430_flash_device,
 };
 
-static inline void __init sdp2430_init_smc91x(void)
-{
-        int eth_cs;
-        unsigned long cs_mem_base;
-        unsigned int rate;
-        struct clk *gpmc_fck;
-
-        eth_cs = SDP2430_SMC91X_CS;
+#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91x_MODULE)
 
-        gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
-        if (IS_ERR(gpmc_fck)) {
-                WARN_ON(1);
-                return;
-        }
+static struct omap_smc91x_platform_data board_smc91x_data = {
+        .cs             = 5,
+        .gpio_irq       = 149,
+        .flags          = GPMC_MUX_ADD_DATA | GPMC_TIMINGS_SMC91C96 |
+                                IORESOURCE_IRQ_LOWLEVEL,
 
-        clk_enable(gpmc_fck);
-        rate = clk_get_rate(gpmc_fck);
-
-        /* Make sure CS1 timings are correct, for 2430 always muxed */
-        gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
-
-        if (rate >= 160000000) {
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
-        } else if (rate >= 130000000) {
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
-        } else { /* rate = 100000000 */
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
-                gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
-        }
+};
 
-        if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
-                printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
-                goto out;
-        }
+static void __init board_smc91x_init(void)
+{
+        if (omap_rev() > OMAP3430_REV_ES1_0)
+                board_smc91x_data.gpio_irq = 6;
+        else
+                board_smc91x_data.gpio_irq = 29;
 
-        sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
-        sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
-        udelay(100);
+        gpmc_smc91x_init(&board_smc91x_data);
+}
 
-        if (gpio_request(SDP2430_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
-                printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
-                        SDP2430_ETHR_GPIO_IRQ);
-                gpmc_cs_free(eth_cs);
-                goto out;
-        }
-        gpio_direction_input(SDP2430_ETHR_GPIO_IRQ);
+#else
 
-out:
-        clk_disable(gpmc_fck);
-        clk_put(gpmc_fck);
+static inline void board_smc91x_init(void)
+{
 }
 
+#endif
+
 static void __init omap_2430sdp_init_irq(void)
 {
         omap2_init_common_hw(NULL);
         omap_init_irq();
         omap_gpio_init();
-        sdp2430_init_smc91x();
 }
 
 static struct omap_uart_config sdp2430_uart_config __initdata = {
@@ -256,6 +196,7 @@ static void __init omap_2430sdp_init(void)
         omap_serial_init();
         twl4030_mmc_init(mmc);
         usb_musb_init();
+        board_smc91x_init();
 }
 
 static void __init omap_2430sdp_map_io(void)