arm: lpc32xx: move SoC to mach-lpc32xx

Following the example of most other SoCs in arch/$(ARCH)/cpu/$(CPU)/$(SOC)
move the lpc32xx code from arch/arm/cpu/arm926ejs/lpc32xx to
arch/arm/mach-lpc32xx.

Following the checklist from
commit 01f14456306c ("ARM: prepare for moving SoC sources into mach-*"):

    [1] move files from arch/arm/cpu/arm926ejs/lpc32xx to arch/arm/mach-lpx32xx
    [2] add machine entry to arch/arm/Makefile
    [3] remove "obj-y += ..." from arch/arm/cpu/arm926ejs/Makefile
    [4] fix the Kconfig file path in arch/arm/Kconfig
    [5] (no MAINTAINERS update)

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Trevor Woerner <twoerner@gmail.com>

1 files changed, 141 insertions, 0 deletions

diff --git a/arch/arm/mach-lpc32xx/devices.c b/arch/arm/mach-lpc32xx/devices.c
new file mode 100644
index 0000000..7e7646a
--- /dev/null
+++ b/arch/arm/mach-lpc32xx/devices.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ns16550.h>
+#include <dm/platform_data/lpc32xx_hsuart.h>
+
+#include <asm/arch/clk.h>
+#include <asm/arch/uart.h>
+#include <asm/arch/mux.h>
+#include <asm/io.h>
+
+static struct clk_pm_regs    *clk  = (struct clk_pm_regs *)CLK_PM_BASE;
+static struct uart_ctrl_regs *ctrl = (struct uart_ctrl_regs *)UART_CTRL_BASE;
+static struct mux_regs *mux = (struct mux_regs *)MUX_BASE;
+
+void lpc32xx_uart_init(unsigned int uart_id)
+{
+	if (uart_id < 1 || uart_id > 7)
+		return;
+
+	/* Disable loopback mode, if it is set by S1L bootloader */
+	clrbits_le32(&ctrl->loop,
+		     UART_LOOPBACK(CONFIG_SYS_LPC32XX_UART));
+
+	if (uart_id < 3 || uart_id > 6)
+		return;
+
+	/* Enable UART system clock */
+	setbits_le32(&clk->uartclk_ctrl, CLK_UART(uart_id));
+
+	/* Set UART into autoclock mode */
+	clrsetbits_le32(&ctrl->clkmode,
+			UART_CLKMODE_MASK(uart_id),
+			UART_CLKMODE_AUTO(uart_id));
+
+	/* Bypass pre-divider of UART clock */
+	writel(CLK_UART_X_DIV(1) | CLK_UART_Y_DIV(1),
+	       &clk->u3clk + (uart_id - 3));
+}
+
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct ns16550_platdata lpc32xx_uart[] = {
+	{ .base = UART3_BASE, .reg_shift = 2,
+	  .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, },
+	{ .base = UART4_BASE, .reg_shift = 2,
+	  .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, },
+	{ .base = UART5_BASE, .reg_shift = 2,
+	  .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, },
+	{ .base = UART6_BASE, .reg_shift = 2,
+	  .clock = CONFIG_SYS_NS16550_CLK, .fcr = UART_FCR_DEFVAL, },
+};
+
+#if defined(CONFIG_LPC32XX_HSUART)
+static const struct lpc32xx_hsuart_platdata lpc32xx_hsuart[] = {
+	{ HS_UART1_BASE, },
+	{ HS_UART2_BASE, },
+	{ HS_UART7_BASE, },
+};
+#endif
+
+U_BOOT_DEVICES(lpc32xx_uarts) = {
+#if defined(CONFIG_LPC32XX_HSUART)
+	{ "lpc32xx_hsuart", &lpc32xx_hsuart[0], },
+	{ "lpc32xx_hsuart", &lpc32xx_hsuart[1], },
+#endif
+	{ "ns16550_serial", &lpc32xx_uart[0], },
+	{ "ns16550_serial", &lpc32xx_uart[1], },
+	{ "ns16550_serial", &lpc32xx_uart[2], },
+	{ "ns16550_serial", &lpc32xx_uart[3], },
+#if defined(CONFIG_LPC32XX_HSUART)
+	{ "lpc32xx_hsuart", &lpc32xx_hsuart[2], },
+#endif
+};
+#endif
+
+void lpc32xx_dma_init(void)
+{
+	/* Enable DMA interface */
+	writel(CLK_DMA_ENABLE, &clk->dmaclk_ctrl);
+}
+
+void lpc32xx_mac_init(void)
+{
+	/* Enable MAC interface */
+	writel(CLK_MAC_REG | CLK_MAC_SLAVE | CLK_MAC_MASTER
+#if defined(CONFIG_RMII)
+		| CLK_MAC_RMII,
+#else
+		| CLK_MAC_MII,
+#endif
+		&clk->macclk_ctrl);
+}
+
+void lpc32xx_mlc_nand_init(void)
+{
+	/* Enable NAND interface */
+	writel(CLK_NAND_MLC | CLK_NAND_MLC_INT, &clk->flashclk_ctrl);
+}
+
+void lpc32xx_slc_nand_init(void)
+{
+	/* Enable SLC NAND interface */
+	writel(CLK_NAND_SLC | CLK_NAND_SLC_SELECT, &clk->flashclk_ctrl);
+}
+
+void lpc32xx_usb_init(void)
+{
+	/* Do not route the UART 5 Tx/Rx pins to the USB D+ and USB D- pins. */
+	clrbits_le32(&ctrl->ctrl, UART_CTRL_UART5_USB_MODE);
+}
+
+void lpc32xx_i2c_init(unsigned int devnum)
+{
+	/* Enable I2C interface */
+	uint32_t ctrl = readl(&clk->i2cclk_ctrl);
+	if (devnum == 1)
+		ctrl |= CLK_I2C1_ENABLE;
+	if (devnum == 2)
+		ctrl |= CLK_I2C2_ENABLE;
+	writel(ctrl, &clk->i2cclk_ctrl);
+}
+
+U_BOOT_DEVICE(lpc32xx_gpios) = {
+	.name = "gpio_lpc32xx"
+};
+
+/* Mux for SCK0, MISO0, MOSI0. We do not use SSEL0. */
+
+#define P_MUX_SET_SSP0 0x1600
+
+void lpc32xx_ssp_init(void)
+{
+	/* Enable SSP0 interface */
+	writel(CLK_SSP0_ENABLE_CLOCK, &clk->ssp_ctrl);
+	/* Mux SSP0 pins */
+	writel(P_MUX_SET_SSP0, &mux->p_mux_set);
+}