| Steven King | 04e037a | 2012-06-05 08:23:08 -0700 | [diff] [blame^] | 1 | /***************************************************************************/ |
| 2 | |
| 3 | /* |
| 4 | * 525x.c |
| 5 | * |
| 6 | * Copyright (C) 2012, Steven King <sfking@fdwdc.com> |
| 7 | */ |
| 8 | |
| 9 | /***************************************************************************/ |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/param.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/io.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <asm/machdep.h> |
| 17 | #include <asm/coldfire.h> |
| 18 | #include <asm/mcfsim.h> |
| 19 | |
| 20 | /***************************************************************************/ |
| 21 | |
| 22 | static void __init m525x_qspi_init(void) |
| 23 | { |
| 24 | #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
| 25 | /* set the GPIO function for the qspi cs gpios */ |
| 26 | /* FIXME: replace with pinmux/pinctl support */ |
| 27 | u32 f = readl(MCFSIM2_GPIOFUNC); |
| 28 | f |= (1 << MCFQSPI_CS2) | (1 << MCFQSPI_CS1) | (1 << MCFQSPI_CS0); |
| 29 | writel(f, MCFSIM2_GPIOFUNC); |
| 30 | |
| 31 | /* QSPI irq setup */ |
| 32 | writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0, |
| 33 | MCF_MBAR + MCFSIM_QSPIICR); |
| 34 | mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI); |
| 35 | #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ |
| 36 | } |
| 37 | |
| 38 | static void __init m525x_i2c_init(void) |
| 39 | { |
| 40 | #if IS_ENABLED(CONFIG_I2C_COLDFIRE) |
| 41 | u32 r; |
| 42 | |
| 43 | /* first I2C controller uses regular irq setup */ |
| 44 | writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI0, |
| 45 | MCF_MBAR + MCFSIM_I2CICR); |
| 46 | mcf_mapirq2imr(MCF_IRQ_I2C0, MCFINTC_I2C); |
| 47 | |
| 48 | /* second I2C controller is completely different */ |
| 49 | r = readl(MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1)); |
| 50 | r &= ~MCFINTC2_INTPRI_BITS(0xf, MCF_IRQ_I2C1); |
| 51 | r |= MCFINTC2_INTPRI_BITS(0x5, MCF_IRQ_I2C1); |
| 52 | writel(r, MCFINTC2_INTPRI_REG(MCF_IRQ_I2C1)); |
| 53 | #endif /* IS_ENABLED(CONFIG_I2C_COLDFIRE) */ |
| 54 | } |
| 55 | |
| 56 | /***************************************************************************/ |
| 57 | |
| 58 | void __init config_BSP(char *commandp, int size) |
| 59 | { |
| 60 | mach_sched_init = hw_timer_init; |
| 61 | |
| 62 | m525x_qspi_init(); |
| 63 | m525x_i2c_init(); |
| 64 | } |
| 65 | |
| 66 | /***************************************************************************/ |