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@@ -16,10 +16,13 @@
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#include <linux/param.h>
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#include <linux/init.h>
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#include <linux/io.h>
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+#include <linux/spi/spi.h>
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+#include <linux/gpio.h>
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#include <asm/machdep.h>
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#include <asm/coldfire.h>
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#include <asm/mcfsim.h>
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#include <asm/mcfuart.h>
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+#include <asm/mcfqspi.h>
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/***************************************************************************/
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@@ -106,12 +109,188 @@ static struct platform_device m527x_fec[] = {
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},
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};
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+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
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+static struct resource m527x_qspi_resources[] = {
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+ {
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+ .start = MCFQSPI_IOBASE,
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+ .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1,
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+ .flags = IORESOURCE_MEM,
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+ },
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+ {
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+ .start = MCFINT_VECBASE + MCFINT_QSPI,
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+ .end = MCFINT_VECBASE + MCFINT_QSPI,
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+ .flags = IORESOURCE_IRQ,
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+ },
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+};
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+
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+#if defined(CONFIG_M5271)
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+#define MCFQSPI_CS0 91
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+#define MCFQSPI_CS1 92
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+#define MCFQSPI_CS2 99
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+#define MCFQSPI_CS3 103
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+#elif defined(CONFIG_M5275)
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+#define MCFQSPI_CS0 59
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+#define MCFQSPI_CS1 60
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+#define MCFQSPI_CS2 61
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+#define MCFQSPI_CS3 62
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+#endif
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+
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+static int m527x_cs_setup(struct mcfqspi_cs_control *cs_control)
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+{
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+ int status;
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+
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+ status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0");
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+ if (status) {
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+ pr_debug("gpio_request for MCFQSPI_CS0 failed\n");
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+ goto fail0;
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+ }
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+ status = gpio_direction_output(MCFQSPI_CS0, 1);
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+ if (status) {
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+ pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n");
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+ goto fail1;
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+ }
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+
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+ status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1");
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+ if (status) {
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+ pr_debug("gpio_request for MCFQSPI_CS1 failed\n");
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+ goto fail1;
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+ }
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+ status = gpio_direction_output(MCFQSPI_CS1, 1);
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+ if (status) {
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+ pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n");
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+ goto fail2;
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+ }
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+
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+ status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2");
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+ if (status) {
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+ pr_debug("gpio_request for MCFQSPI_CS2 failed\n");
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+ goto fail2;
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+ }
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+ status = gpio_direction_output(MCFQSPI_CS2, 1);
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+ if (status) {
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+ pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n");
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+ goto fail3;
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+ }
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+
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+ status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3");
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+ if (status) {
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+ pr_debug("gpio_request for MCFQSPI_CS3 failed\n");
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+ goto fail3;
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+ }
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+ status = gpio_direction_output(MCFQSPI_CS3, 1);
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+ if (status) {
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+ pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n");
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+ goto fail4;
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+ }
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+
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+ return 0;
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+
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+fail4:
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+ gpio_free(MCFQSPI_CS3);
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+fail3:
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+ gpio_free(MCFQSPI_CS2);
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+fail2:
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+ gpio_free(MCFQSPI_CS1);
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+fail1:
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+ gpio_free(MCFQSPI_CS0);
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+fail0:
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+ return status;
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+}
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+
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+static void m527x_cs_teardown(struct mcfqspi_cs_control *cs_control)
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+{
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+ gpio_free(MCFQSPI_CS3);
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+ gpio_free(MCFQSPI_CS2);
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+ gpio_free(MCFQSPI_CS1);
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+ gpio_free(MCFQSPI_CS0);
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+}
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+
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+static void m527x_cs_select(struct mcfqspi_cs_control *cs_control,
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+ u8 chip_select, bool cs_high)
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+{
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+ switch (chip_select) {
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+ case 0:
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+ gpio_set_value(MCFQSPI_CS0, cs_high);
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+ break;
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+ case 1:
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+ gpio_set_value(MCFQSPI_CS1, cs_high);
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+ break;
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+ case 2:
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+ gpio_set_value(MCFQSPI_CS2, cs_high);
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+ break;
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+ case 3:
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+ gpio_set_value(MCFQSPI_CS3, cs_high);
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+ break;
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+ }
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+}
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+
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+static void m527x_cs_deselect(struct mcfqspi_cs_control *cs_control,
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+ u8 chip_select, bool cs_high)
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+{
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+ switch (chip_select) {
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+ case 0:
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+ gpio_set_value(MCFQSPI_CS0, !cs_high);
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+ break;
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+ case 1:
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+ gpio_set_value(MCFQSPI_CS1, !cs_high);
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+ break;
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+ case 2:
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+ gpio_set_value(MCFQSPI_CS2, !cs_high);
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+ break;
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+ case 3:
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+ gpio_set_value(MCFQSPI_CS3, !cs_high);
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+ break;
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+ }
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+}
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+
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+static struct mcfqspi_cs_control m527x_cs_control = {
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+ .setup = m527x_cs_setup,
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+ .teardown = m527x_cs_teardown,
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+ .select = m527x_cs_select,
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+ .deselect = m527x_cs_deselect,
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+};
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+
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+static struct mcfqspi_platform_data m527x_qspi_data = {
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+ .bus_num = 0,
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+ .num_chipselect = 4,
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+ .cs_control = &m527x_cs_control,
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+};
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+
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+static struct platform_device m527x_qspi = {
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+ .name = "mcfqspi",
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+ .id = 0,
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+ .num_resources = ARRAY_SIZE(m527x_qspi_resources),
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+ .resource = m527x_qspi_resources,
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+ .dev.platform_data = &m527x_qspi_data,
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+};
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+
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+static void __init m527x_qspi_init(void)
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+{
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+#if defined(CONFIG_M5271)
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+ u16 par;
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+
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+ /* setup QSPS pins for QSPI with gpio CS control */
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+ writeb(0x1f, MCFGPIO_PAR_QSPI);
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+ /* and CS2 & CS3 as gpio */
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+ par = readw(MCFGPIO_PAR_TIMER);
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+ par &= 0x3f3f;
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+ writew(par, MCFGPIO_PAR_TIMER);
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+#elif defined(CONFIG_M5275)
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+ /* setup QSPS pins for QSPI with gpio CS control */
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+ writew(0x003e, MCFGPIO_PAR_QSPI);
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+#endif
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+}
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+#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
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+
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static struct platform_device *m527x_devices[] __initdata = {
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&m527x_uart,
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&m527x_fec[0],
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#ifdef CONFIG_FEC2
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&m527x_fec[1],
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#endif
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+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
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+ &m527x_qspi,
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+#endif
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};
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/***************************************************************************/
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@@ -187,6 +366,9 @@ void __init config_BSP(char *commandp, int size)
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mach_reset = m527x_cpu_reset;
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m527x_uarts_init();
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m527x_fec_init();
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+#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
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+ m527x_qspi_init();
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+#endif
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}
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/***************************************************************************/
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