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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/m68k/coldfire/m5249.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/m68k/coldfire/m5249.c')
-rw-r--r--arch/m68k/coldfire/m5249.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m5249.c b/arch/m68k/coldfire/m5249.c
new file mode 100644
index 000000000..0590f8c42
--- /dev/null
+++ b/arch/m68k/coldfire/m5249.c
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0
+/***************************************************************************/
+
+/*
+ * m5249.c -- platform support for ColdFire 5249 based boards
+ *
+ * Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK);
+DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK);
+DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
+DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
+DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
+DEFINE_CLK(mcfi2c0, "imx1-i2c.0", MCF_BUSCLK);
+DEFINE_CLK(mcfi2c1, "imx1-i2c.1", MCF_BUSCLK);
+
+struct clk *mcf_clks[] = {
+ &clk_pll,
+ &clk_sys,
+ &clk_mcftmr0,
+ &clk_mcftmr1,
+ &clk_mcfuart0,
+ &clk_mcfuart1,
+ &clk_mcfqspi0,
+ &clk_mcfi2c0,
+ &clk_mcfi2c1,
+ NULL
+};
+
+/***************************************************************************/
+
+#ifdef CONFIG_M5249C3
+
+static struct resource m5249_smc91x_resources[] = {
+ {
+ .start = 0xe0000300,
+ .end = 0xe0000300 + 0x100,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = MCF_IRQ_GPIO6,
+ .end = MCF_IRQ_GPIO6,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device m5249_smc91x = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(m5249_smc91x_resources),
+ .resource = m5249_smc91x_resources,
+};
+
+#endif /* CONFIG_M5249C3 */
+
+static struct platform_device *m5249_devices[] __initdata = {
+#ifdef CONFIG_M5249C3
+ &m5249_smc91x,
+#endif
+};
+
+/***************************************************************************/
+
+static void __init m5249_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+ /* QSPI irq setup */
+ writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0,
+ MCFSIM_QSPIICR);
+ mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI);
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+static void __init m5249_i2c_init(void)
+{
+#if IS_ENABLED(CONFIG_I2C_IMX)
+ u32 r;
+
+ /* first I2C controller uses regular irq setup */
+ writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0,
+ MCFSIM_I2CICR);
+ mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C);
+
+ /* second I2C controller is completely different */
+ r = readl(MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1));
+ r &= ~MCFINTC2_INTPRI_BITS(0xf, MCF_IRQ_I2C1);
+ r |= MCFINTC2_INTPRI_BITS(0x5, MCF_IRQ_I2C1);
+ writel(r, MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1));
+#endif /* CONFIG_I2C_IMX */
+}
+
+/***************************************************************************/
+
+#ifdef CONFIG_M5249C3
+
+static void __init m5249_smc91x_init(void)
+{
+ u32 gpio;
+
+ /* Set the GPIO line as interrupt source for smc91x device */
+ gpio = readl(MCFSIM2_GPIOINTENABLE);
+ writel(gpio | 0x40, MCFSIM2_GPIOINTENABLE);
+
+ gpio = readl(MCFINTC2_INTPRI5);
+ writel(gpio | 0x04000000, MCFINTC2_INTPRI5);
+}
+
+#endif /* CONFIG_M5249C3 */
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_sched_init = hw_timer_init;
+
+#ifdef CONFIG_M5249C3
+ m5249_smc91x_init();
+#endif
+ m5249_qspi_init();
+ m5249_i2c_init();
+}
+
+/***************************************************************************/
+
+static int __init init_BSP(void)
+{
+ platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/