@@ -28,13 +28,14 @@
#include <mach/dma.h>
#include <mach/gpmc.h>
-#define RX51_ETHR_GPIO_IRQ 54
+#define SMC91X_CS 1
+#define SMC91X_GPIO_IRQ 54
+#define SMC91X_GPIO_RESET 164
+#define SMC91X_GPIO_PWRDWN 86
#define RX51_TSC2005_RESET_GPIO 104
#define RX51_TSC2005_IRQ_GPIO 100
-#define RX51_SMC91X_CS 1
-
static struct resource rx51_smc91x_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
@@ -71,7 +72,6 @@ static struct omap2_mcspi_device_config tsc2005_mcspi_config = {
.single_channel = 1,
};
-
static struct spi_board_info rx51_peripherals_spi_board_info[] = {
[0] = {
.modalias = "tsc2005",
@@ -143,37 +143,92 @@ static struct platform_device *rx51_peripherals_devices[] = {
&rx51_smc91x_device,
};
+/*
+ * Timings are taken from smsc-lan91c96-ms.pdf
+ */
+static int smc91x_init_gpmc(int cs)
+{
+ struct gpmc_timings t;
+ const int t2_r = 45; /* t2 in Figure 12.10 */
+ const int t2_w = 30; /* t2 in Figure 12.11 */
+ const int t3 = 15; /* t3 in Figure 12.10 */
+ const int t5_r = 0; /* t5 in Figure 12.10 */
+ const int t6_r = 45; /* t6 in Figure 12.10 */
+ const int t6_w = 0; /* t6 in Figure 12.11 */
+ const int t7_w = 15; /* t7 in Figure 12.11 */
+ const int t15 = 12; /* t15 in Figure 12.2 */
+ const int t20 = 185; /* t20 in Figure 12.2 */
+
+ memset(&t, 0, sizeof(t));
+
+ t.cs_on = t15;
+ t.cs_rd_off = t3 + t2_r + t5_r; /* Figure 12.10 */
+ t.cs_wr_off = t3 + t2_w + t6_w; /* Figure 12.11 */
+ t.adv_on = t3; /* Figure 12.10 */
+ t.adv_rd_off = t3 + t2_r; /* Figure 12.10 */
+ t.adv_wr_off = t3 + t2_w; /* Figure 12.11 */
+ t.oe_off = t3 + t2_r + t5_r; /* Figure 12.10 */
+ t.oe_on = t.oe_off - t6_r; /* Figure 12.10 */
+ t.we_off = t3 + t2_w + t6_w; /* Figure 12.11 */
+ t.we_on = t.we_off - t7_w; /* Figure 12.11 */
+ t.rd_cycle = t20; /* Figure 12.2 */
+ t.wr_cycle = t20; /* Figure 12.4 */
+ t.access = t3 + t2_r + t5_r; /* Figure 12.10 */
+ t.wr_access = t3 + t2_w + t6_w; /* Figure 12.11 */
+
+ gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, GPMC_CONFIG1_DEVICESIZE_16);
+
+ return gpmc_cs_set_timings(cs, &t);
+}
+
static void __init rx51_init_smc91x(void)
{
- int eth_cs;
unsigned long cs_mem_base;
- unsigned int rate;
- struct clk *l3ck;
+ int ret;
- eth_cs = RX51_SMC91X_CS;
+ omap_cfg_reg(U8_34XX_GPIO54_DOWN);
+ omap_cfg_reg(G25_34XX_GPIO86_OUT);
+ omap_cfg_reg(H19_34XX_GPIO164_OUT);
- l3ck = clk_get(NULL, "core_l3_ck");
- if (IS_ERR(l3ck))
- rate = 100000000;
- else
- rate = clk_get_rate(l3ck);
-
- if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
+ if (gpmc_cs_request(SMC91X_CS, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
return;
}
- rx51_smc91x_resources[0].start = cs_mem_base + 0x0;
- rx51_smc91x_resources[0].end = cs_mem_base + 0xf;
- udelay(100);
+ rx51_smc91x_resources[0].start = cs_mem_base + 0x300;
+ rx51_smc91x_resources[0].end = cs_mem_base + 0x30f;
- if (gpio_request(RX51_ETHR_GPIO_IRQ, "SMC91X irq") < 0) {
- printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
- RX51_ETHR_GPIO_IRQ);
- return;
- }
- gpio_direction_input(RX51_ETHR_GPIO_IRQ);
- rx51_smc91x_resources[1].start = gpio_to_irq(RX51_ETHR_GPIO_IRQ);
+ smc91x_init_gpmc(SMC91X_CS);
+
+ if (gpio_request(SMC91X_GPIO_IRQ, "SMC91X irq") < 0)
+ goto free1;
+
+ gpio_direction_input(SMC91X_GPIO_IRQ);
+ rx51_smc91x_resources[1].start = gpio_to_irq(SMC91X_GPIO_IRQ);
+
+ ret = gpio_request(SMC91X_GPIO_PWRDWN, "SMC91X powerdown");
+ if (ret)
+ goto free2;
+ gpio_direction_output(SMC91X_GPIO_PWRDWN, 0);
+
+ ret = gpio_request(SMC91X_GPIO_RESET, "SMC91X reset");
+ if (ret)
+ goto free3;
+ gpio_direction_output(SMC91X_GPIO_RESET, 0);
+ gpio_set_value(SMC91X_GPIO_RESET, 1);
+ msleep(100);
+ gpio_set_value(SMC91X_GPIO_RESET, 0);
+
+ return;
+
+free3:
+ gpio_free(SMC91X_GPIO_PWRDWN);
+free2:
+ gpio_free(SMC91X_GPIO_IRQ);
+free1:
+ gpmc_cs_free(SMC91X_CS);
+
+ printk(KERN_ERR "Could not initialize smc91x\n");
}
static void __init rx51_init_tsc2005(void)