MIPS: Loongson1B: Some updates/fixes for LS1B

- Add DMA device
- Add NAND device
- Add GPIO device
- Add LED device
- Update the defconfig and rename it to loongson1b_defconfig
- Fix ioremap size
- Other minor fixes

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: dmaengine@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Patchwork: https://patchwork.linux-mips.org/patch/13033/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

4 files changed, 184 insertions, 28 deletions

diff --git a/arch/mips/loongson32/common/platform.c b/arch/mips/loongson32/common/platform.c
index ddf1d4c..f2c714d 100644
--- a/arch/mips/loongson32/common/platform.c
+++ b/arch/mips/loongson32/common/platform.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
+ * Copyright (c) 2011-2016 Zhang, Keguang <keguang.zhang@gmail.com>
  *
  * This program is free software; you can redistribute	it and/or modify it
  * under  the terms of	the GNU General	 Public License as published by the
@@ -10,14 +10,17 @@
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
+#include <linux/mtd/partitions.h>
+#include <linux/sizes.h>
 #include <linux/phy.h>
 #include <linux/serial_8250.h>
 #include <linux/stmmac.h>
 #include <linux/usb/ehci_pdriver.h>
-#include <asm-generic/sizes.h>
 
-#include <cpufreq.h>
 #include <loongson1.h>
+#include <cpufreq.h>
+#include <dma.h>
+#include <nand.h>
 
 /* 8250/16550 compatible UART */
 #define LS1X_UART(_id)						\
@@ -45,7 +48,7 @@ struct platform_device ls1x_uart_pdev = {
 	},
 };
 
-void __init ls1x_serial_setup(struct platform_device *pdev)
+void __init ls1x_serial_set_uartclk(struct platform_device *pdev)
 {
 	struct clk *clk;
 	struct plat_serial8250_port *p;
@@ -77,6 +80,42 @@ struct platform_device ls1x_cpufreq_pdev = {
 	},
 };
 
+/* DMA */
+static struct resource ls1x_dma_resources[] = {
+	[0] = {
+		.start = LS1X_DMAC_BASE,
+		.end = LS1X_DMAC_BASE + SZ_4 - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = LS1X_DMA0_IRQ,
+		.end = LS1X_DMA0_IRQ,
+		.flags = IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start = LS1X_DMA1_IRQ,
+		.end = LS1X_DMA1_IRQ,
+		.flags = IORESOURCE_IRQ,
+	},
+	[3] = {
+		.start = LS1X_DMA2_IRQ,
+		.end = LS1X_DMA2_IRQ,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device ls1x_dma_pdev = {
+	.name		= "ls1x-dma",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(ls1x_dma_resources),
+	.resource	= ls1x_dma_resources,
+};
+
+void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata)
+{
+	ls1x_dma_pdev.dev.platform_data = pdata;
+}
+
 /* Synopsys Ethernet GMAC */
 static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
 	.phy_mask	= 0,
@@ -198,6 +237,64 @@ struct platform_device ls1x_eth1_pdev = {
 	},
 };
 
+/* GPIO */
+static struct resource ls1x_gpio0_resources[] = {
+	[0] = {
+		.start	= LS1X_GPIO0_BASE,
+		.end	= LS1X_GPIO0_BASE + SZ_4 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device ls1x_gpio0_pdev = {
+	.name		= "ls1x-gpio",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(ls1x_gpio0_resources),
+	.resource	= ls1x_gpio0_resources,
+};
+
+static struct resource ls1x_gpio1_resources[] = {
+	[0] = {
+		.start	= LS1X_GPIO1_BASE,
+		.end	= LS1X_GPIO1_BASE + SZ_4 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device ls1x_gpio1_pdev = {
+	.name		= "ls1x-gpio",
+	.id		= 1,
+	.num_resources	= ARRAY_SIZE(ls1x_gpio1_resources),
+	.resource	= ls1x_gpio1_resources,
+};
+
+/* NAND Flash */
+static struct resource ls1x_nand_resources[] = {
+	[0] = {
+		.start	= LS1X_NAND_BASE,
+		.end	= LS1X_NAND_BASE + SZ_32 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		/* DMA channel 0 is dedicated to NAND */
+		.start	= LS1X_DMA_CHANNEL0,
+		.end	= LS1X_DMA_CHANNEL0,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+struct platform_device ls1x_nand_pdev = {
+	.name		= "ls1x-nand",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(ls1x_nand_resources),
+	.resource	= ls1x_nand_resources,
+};
+
+void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata)
+{
+	ls1x_nand_pdev.dev.platform_data = pdata;
+}
+
 /* USB EHCI */
 static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
 
diff --git a/arch/mips/loongson32/common/reset.c b/arch/mips/loongson32/common/reset.c
index c41e4ca..8a1d9cc 100644
--- a/arch/mips/loongson32/common/reset.c
+++ b/arch/mips/loongson32/common/reset.c
@@ -9,12 +9,13 @@
 
 #include <linux/io.h>
 #include <linux/pm.h>
+#include <linux/sizes.h>
 #include <asm/idle.h>
 #include <asm/reboot.h>
 
 #include <loongson1.h>
 
-static void __iomem *wdt_base;
+static void __iomem *wdt_reg_base;
 
 static void ls1x_halt(void)
 {
@@ -26,9 +27,9 @@ static void ls1x_halt(void)
 
 static void ls1x_restart(char *command)
 {
-	__raw_writel(0x1, wdt_base + WDT_EN);
-	__raw_writel(0x1, wdt_base + WDT_TIMER);
-	__raw_writel(0x1, wdt_base + WDT_SET);
+	__raw_writel(0x1, wdt_reg_base + WDT_EN);
+	__raw_writel(0x1, wdt_reg_base + WDT_TIMER);
+	__raw_writel(0x1, wdt_reg_base + WDT_SET);
 
 	ls1x_halt();
 }
@@ -40,8 +41,8 @@ static void ls1x_power_off(void)
 
 static int __init ls1x_reboot_setup(void)
 {
-	wdt_base = ioremap_nocache(LS1X_WDT_BASE, 0x0f);
-	if (!wdt_base)
+	wdt_reg_base = ioremap_nocache(LS1X_WDT_BASE, (SZ_4 + SZ_8));
+	if (!wdt_reg_base)
 		panic("Failed to remap watchdog registers");
 
 	_machine_restart = ls1x_restart;
diff --git a/arch/mips/loongson32/common/time.c b/arch/mips/loongson32/common/time.c
index 0996b02..ff224f0 100644
--- a/arch/mips/loongson32/common/time.c
+++ b/arch/mips/loongson32/common/time.c
@@ -9,6 +9,7 @@
 
 #include <linux/clk.h>
 #include <linux/interrupt.h>
+#include <linux/sizes.h>
 #include <asm/time.h>
 
 #include <loongson1.h>
@@ -35,25 +36,25 @@
 
 DEFINE_RAW_SPINLOCK(ls1x_timer_lock);
 
-static void __iomem *timer_base;
+static void __iomem *timer_reg_base;
 static uint32_t ls1x_jiffies_per_tick;
 
 static inline void ls1x_pwmtimer_set_period(uint32_t period)
 {
-	__raw_writel(period, timer_base + PWM_HRC);
-	__raw_writel(period, timer_base + PWM_LRC);
+	__raw_writel(period, timer_reg_base + PWM_HRC);
+	__raw_writel(period, timer_reg_base + PWM_LRC);
 }
 
 static inline void ls1x_pwmtimer_restart(void)
 {
-	__raw_writel(0x0, timer_base + PWM_CNT);
-	__raw_writel(INT_EN | CNT_EN, timer_base + PWM_CTRL);
+	__raw_writel(0x0, timer_reg_base + PWM_CNT);
+	__raw_writel(INT_EN | CNT_EN, timer_reg_base + PWM_CTRL);
 }
 
 void __init ls1x_pwmtimer_init(void)
 {
-	timer_base = ioremap(LS1X_TIMER_BASE, 0xf);
-	if (!timer_base)
+	timer_reg_base = ioremap_nocache(LS1X_TIMER_BASE, SZ_16);
+	if (!timer_reg_base)
 		panic("Failed to remap timer registers");
 
 	ls1x_jiffies_per_tick = DIV_ROUND_CLOSEST(mips_hpt_frequency, HZ);
@@ -86,7 +87,7 @@ static cycle_t ls1x_clocksource_read(struct clocksource *cs)
 	 */
 	jifs = jiffies;
 	/* read the count */
-	count = __raw_readl(timer_base + PWM_CNT);
+	count = __raw_readl(timer_reg_base + PWM_CNT);
 
 	/*
 	 * It's possible for count to appear to go the wrong way for this
@@ -131,7 +132,7 @@ static int ls1x_clockevent_set_state_periodic(struct clock_event_device *cd)
 	raw_spin_lock(&ls1x_timer_lock);
 	ls1x_pwmtimer_set_period(ls1x_jiffies_per_tick);
 	ls1x_pwmtimer_restart();
-	__raw_writel(INT_EN | CNT_EN, timer_base + PWM_CTRL);
+	__raw_writel(INT_EN | CNT_EN, timer_reg_base + PWM_CTRL);
 	raw_spin_unlock(&ls1x_timer_lock);
 
 	return 0;
@@ -140,7 +141,7 @@ static int ls1x_clockevent_set_state_periodic(struct clock_event_device *cd)
 static int ls1x_clockevent_tick_resume(struct clock_event_device *cd)
 {
 	raw_spin_lock(&ls1x_timer_lock);
-	__raw_writel(INT_EN | CNT_EN, timer_base + PWM_CTRL);
+	__raw_writel(INT_EN | CNT_EN, timer_reg_base + PWM_CTRL);
 	raw_spin_unlock(&ls1x_timer_lock);
 
 	return 0;
@@ -149,8 +150,8 @@ static int ls1x_clockevent_tick_resume(struct clock_event_device *cd)
 static int ls1x_clockevent_set_state_shutdown(struct clock_event_device *cd)
 {
 	raw_spin_lock(&ls1x_timer_lock);
-	__raw_writel(__raw_readl(timer_base + PWM_CTRL) & ~CNT_EN,
-		     timer_base + PWM_CTRL);
+	__raw_writel(__raw_readl(timer_reg_base + PWM_CTRL) & ~CNT_EN,
+		     timer_reg_base + PWM_CTRL);
 	raw_spin_unlock(&ls1x_timer_lock);
 
 	return 0;
@@ -220,7 +221,7 @@ void __init plat_time_init(void)
 
 #ifdef CONFIG_CEVT_CSRC_LS1X
 	/* setup LS1X PWM timer */
-	clk = clk_get(NULL, "ls1x_pwmtimer");
+	clk = clk_get(NULL, "ls1x-pwmtimer");
 	if (IS_ERR(clk))
 		panic("unable to get timer clock, err=%ld", PTR_ERR(clk));
 
diff --git a/arch/mips/loongson32/ls1b/board.c b/arch/mips/loongson32/ls1b/board.c
index 58daeea..38a1d40 100644
--- a/arch/mips/loongson32/ls1b/board.c
+++ b/arch/mips/loongson32/ls1b/board.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
+ * Copyright (c) 2011-2016 Zhang, Keguang <keguang.zhang@gmail.com>
  *
  * This program is free software; you can redistribute	it and/or modify it
  * under  the terms of	the GNU General	 Public License as published by the
@@ -7,26 +7,83 @@
  * option) any later version.
  */
 
+#include <linux/leds.h>
+#include <linux/mtd/partitions.h>
+#include <linux/sizes.h>
+
+#include <loongson1.h>
+#include <dma.h>
+#include <nand.h>
 #include <platform.h>
 
+struct plat_ls1x_dma ls1x_dma_pdata = {
+	.nr_channels	= 3,
+};
+
+static struct mtd_partition ls1x_nand_parts[] = {
+	{
+		.name        = "kernel",
+		.offset      = 0,
+		.size        = SZ_16M,
+	},
+	{
+		.name        = "rootfs",
+		.offset      = MTDPART_OFS_APPEND,
+		.size        = MTDPART_SIZ_FULL,
+	},
+};
+
+struct plat_ls1x_nand ls1x_nand_pdata = {
+	.parts		= ls1x_nand_parts,
+	.nr_parts	= ARRAY_SIZE(ls1x_nand_parts),
+	.hold_cycle	= 0x2,
+	.wait_cycle	= 0xc,
+};
+
+static const struct gpio_led ls1x_gpio_leds[] __initconst = {
+	{
+		.name			= "LED9",
+		.default_trigger	= "heartbeat",
+		.gpio			= 38,
+		.active_low		= 1,
+		.default_state		= LEDS_GPIO_DEFSTATE_OFF,
+	}, {
+		.name			= "LED6",
+		.default_trigger	= "nand-disk",
+		.gpio			= 39,
+		.active_low		= 1,
+		.default_state		= LEDS_GPIO_DEFSTATE_OFF,
+	},
+};
+
+static const struct gpio_led_platform_data ls1x_led_pdata __initconst = {
+	.num_leds	= ARRAY_SIZE(ls1x_gpio_leds),
+	.leds		= ls1x_gpio_leds,
+};
+
 static struct platform_device *ls1b_platform_devices[] __initdata = {
 	&ls1x_uart_pdev,
 	&ls1x_cpufreq_pdev,
+	&ls1x_dma_pdev,
 	&ls1x_eth0_pdev,
 	&ls1x_eth1_pdev,
 	&ls1x_ehci_pdev,
+	&ls1x_gpio0_pdev,
+	&ls1x_gpio1_pdev,
+	&ls1x_nand_pdev,
 	&ls1x_rtc_pdev,
 };
 
 static int __init ls1b_platform_init(void)
 {
-	int err;
+	ls1x_serial_set_uartclk(&ls1x_uart_pdev);
+	ls1x_dma_set_platdata(&ls1x_dma_pdata);
+	ls1x_nand_set_platdata(&ls1x_nand_pdata);
 
-	ls1x_serial_setup(&ls1x_uart_pdev);
+	gpio_led_register_device(-1, &ls1x_led_pdata);
 
-	err = platform_add_devices(ls1b_platform_devices,
+	return platform_add_devices(ls1b_platform_devices,
 				   ARRAY_SIZE(ls1b_platform_devices));
-	return err;
 }
 
 arch_initcall(ls1b_platform_init);