1 /***************************************************************************/
4 * linux/arch/m68knommu/platform/520x/config.c
6 * Copyright (C) 2005, Freescale (www.freescale.com)
7 * Copyright (C) 2005, Intec Automation (mike@steroidmicros.com)
8 * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
9 * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
12 /***************************************************************************/
14 #include <linux/kernel.h>
15 #include <linux/param.h>
16 #include <linux/init.h>
18 #include <linux/spi/spi.h>
19 #include <linux/gpio.h>
20 #include <asm/machdep.h>
21 #include <asm/coldfire.h>
22 #include <asm/mcfsim.h>
23 #include <asm/mcfuart.h>
24 #include <asm/mcfqspi.h>
26 /***************************************************************************/
28 static struct mcf_platform_uart m520x_uart_platform[] = {
30 .mapbase = MCFUART_BASE1,
31 .irq = MCFINT_VECBASE + MCFINT_UART0,
34 .mapbase = MCFUART_BASE2,
35 .irq = MCFINT_VECBASE + MCFINT_UART1,
38 .mapbase = MCFUART_BASE3,
39 .irq = MCFINT_VECBASE + MCFINT_UART2,
44 static struct platform_device m520x_uart = {
47 .dev.platform_data = m520x_uart_platform,
50 static struct resource m520x_fec_resources[] = {
53 .end = MCFFEC_BASE + MCFFEC_SIZE - 1,
54 .flags = IORESOURCE_MEM,
59 .flags = IORESOURCE_IRQ,
64 .flags = IORESOURCE_IRQ,
69 .flags = IORESOURCE_IRQ,
73 static struct platform_device m520x_fec = {
76 .num_resources = ARRAY_SIZE(m520x_fec_resources),
77 .resource = m520x_fec_resources,
80 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
81 static struct resource m520x_qspi_resources[] = {
83 .start = MCFQSPI_IOBASE,
84 .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1,
85 .flags = IORESOURCE_MEM,
88 .start = MCFINT_VECBASE + MCFINT_QSPI,
89 .end = MCFINT_VECBASE + MCFINT_QSPI,
90 .flags = IORESOURCE_IRQ,
94 #define MCFQSPI_CS0 46
95 #define MCFQSPI_CS1 47
96 #define MCFQSPI_CS2 27
98 static int m520x_cs_setup(struct mcfqspi_cs_control *cs_control)
102 status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0");
104 pr_debug("gpio_request for MCFQSPI_CS0 failed\n");
107 status = gpio_direction_output(MCFQSPI_CS0, 1);
109 pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n");
113 status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1");
115 pr_debug("gpio_request for MCFQSPI_CS1 failed\n");
118 status = gpio_direction_output(MCFQSPI_CS1, 1);
120 pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n");
124 status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2");
126 pr_debug("gpio_request for MCFQSPI_CS2 failed\n");
129 status = gpio_direction_output(MCFQSPI_CS2, 1);
131 pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n");
138 gpio_free(MCFQSPI_CS2);
140 gpio_free(MCFQSPI_CS1);
142 gpio_free(MCFQSPI_CS0);
147 static void m520x_cs_teardown(struct mcfqspi_cs_control *cs_control)
149 gpio_free(MCFQSPI_CS2);
150 gpio_free(MCFQSPI_CS1);
151 gpio_free(MCFQSPI_CS0);
154 static void m520x_cs_select(struct mcfqspi_cs_control *cs_control,
155 u8 chip_select, bool cs_high)
157 switch (chip_select) {
159 gpio_set_value(MCFQSPI_CS0, cs_high);
162 gpio_set_value(MCFQSPI_CS1, cs_high);
165 gpio_set_value(MCFQSPI_CS2, cs_high);
170 static void m520x_cs_deselect(struct mcfqspi_cs_control *cs_control,
171 u8 chip_select, bool cs_high)
173 switch (chip_select) {
175 gpio_set_value(MCFQSPI_CS0, !cs_high);
178 gpio_set_value(MCFQSPI_CS1, !cs_high);
181 gpio_set_value(MCFQSPI_CS2, !cs_high);
186 static struct mcfqspi_cs_control m520x_cs_control = {
187 .setup = m520x_cs_setup,
188 .teardown = m520x_cs_teardown,
189 .select = m520x_cs_select,
190 .deselect = m520x_cs_deselect,
193 static struct mcfqspi_platform_data m520x_qspi_data = {
196 .cs_control = &m520x_cs_control,
199 static struct platform_device m520x_qspi = {
202 .num_resources = ARRAY_SIZE(m520x_qspi_resources),
203 .resource = m520x_qspi_resources,
204 .dev.platform_data = &m520x_qspi_data,
207 static void __init m520x_qspi_init(void)
210 /* setup Port QS for QSPI with gpio CS control */
211 writeb(0x3f, MCF_GPIO_PAR_QSPI);
212 /* make U1CTS and U2RTS gpio for cs_control */
213 par = readw(MCF_GPIO_PAR_UART);
215 writew(par, MCF_GPIO_PAR_UART);
217 #endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
220 static struct platform_device *m520x_devices[] __initdata = {
223 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
228 /***************************************************************************/
230 static void __init m520x_uart_init_line(int line, int irq)
237 par = readw(MCF_GPIO_PAR_UART);
238 par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
239 MCF_GPIO_PAR_UART_PAR_URXD0;
240 writew(par, MCF_GPIO_PAR_UART);
243 par = readw(MCF_GPIO_PAR_UART);
244 par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
245 MCF_GPIO_PAR_UART_PAR_URXD1;
246 writew(par, MCF_GPIO_PAR_UART);
249 par2 = readb(MCF_GPIO_PAR_FECI2C);
251 par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
252 MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
253 writeb(par2, MCF_GPIO_PAR_FECI2C);
258 static void __init m520x_uarts_init(void)
260 const int nrlines = ARRAY_SIZE(m520x_uart_platform);
263 for (line = 0; (line < nrlines); line++)
264 m520x_uart_init_line(line, m520x_uart_platform[line].irq);
267 /***************************************************************************/
269 static void __init m520x_fec_init(void)
273 /* Set multi-function pins to ethernet mode */
274 v = readb(MCF_GPIO_PAR_FEC);
275 writeb(v | 0xf0, MCF_GPIO_PAR_FEC);
277 v = readb(MCF_GPIO_PAR_FECI2C);
278 writeb(v | 0x0f, MCF_GPIO_PAR_FECI2C);
281 /***************************************************************************/
283 static void m520x_cpu_reset(void)
286 __raw_writeb(MCF_RCR_SWRESET, MCF_RCR);
289 /***************************************************************************/
291 void __init config_BSP(char *commandp, int size)
293 mach_reset = m520x_cpu_reset;
296 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
301 /***************************************************************************/
303 static int __init init_BSP(void)
305 platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
309 arch_initcall(init_BSP);
311 /***************************************************************************/