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Commit d4032ccc authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

Merge tag 'samsung-soc-4.10-2' of... 

Merge tag 'samsung-soc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes

Samsung mach/soc update for v4.10:

1. Minor cleanup in smp_operations.
2. Another step in switching s3c24xx to new DMA API.
3. Drop fixed requirement for HZ=200 on Samsung platforms.

* tag 'samsung-soc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: Drop fixed 200 Hz timer requirement from Samsung platforms
  ARM: S3C24XX: Add DMA slave maps for remaining s3c24xx SoCs
  ARM: EXYNOS: Remove smp_init_cpus hook from platsmp.c
parents cb2cc436 da6b21e9

arch/arm/Kconfig

+1 −2
Original line number Diff line number Diff line
@@ -1502,8 +1502,7 @@ source kernel/Kconfig.preempt 


config HZ_FIXED

	int

	default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \

		ARCH_S5PV210 || ARCH_EXYNOS4

	default 200 if ARCH_EBSA110

	default 128 if SOC_AT91RM9200

	default 0

arch/arm/mach-exynos/platsmp.c

+0 −31
Original line number Diff line number Diff line
@@ -385,36 +385,6 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) 
	return pen_release != -1 ? ret : 0;

}



/*

 * Initialise the CPU possible map early - this describes the CPUs

 * which may be present or become present in the system.

 */



static void __init exynos_smp_init_cpus(void)

{

	void __iomem *scu_base = scu_base_addr();

	unsigned int i, ncores;



	if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)

		ncores = scu_base ? scu_get_core_count(scu_base) : 1;

	else

		/*

		 * CPU Nodes are passed thru DT and set_cpu_possible

		 * is set by "arm_dt_init_cpu_maps".

		 */

		return;



	/* sanity check */

	if (ncores > nr_cpu_ids) {

		pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",

			ncores, nr_cpu_ids);

		ncores = nr_cpu_ids;

	}



	for (i = 0; i < ncores; i++)

		set_cpu_possible(i, true);

}



static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)

{

	int i;
@@ -479,7 +449,6 @@ static void exynos_cpu_die(unsigned int cpu) 
#endif /* CONFIG_HOTPLUG_CPU */



const struct smp_operations exynos_smp_ops __initconst = {

	.smp_init_cpus		= exynos_smp_init_cpus,

	.smp_prepare_cpus	= exynos_smp_prepare_cpus,

	.smp_secondary_init	= exynos_secondary_init,

	.smp_boot_secondary	= exynos_boot_secondary,

arch/arm/mach-s3c24xx/common.c

+76 −0
Original line number Diff line number Diff line
@@ -345,10 +345,40 @@ static struct s3c24xx_dma_channel s3c2410_dma_channels[DMACH_MAX] = { 
	[DMACH_USB_EP4] = { S3C24XX_DMA_APB, true, S3C24XX_DMA_CHANREQ(4, 3), },

};



static const struct dma_slave_map s3c2410_dma_slave_map[] = {

	{ "s3c2410-sdi", "rx-tx", (void *)DMACH_SDI },

	{ "s3c2410-spi.0", "rx", (void *)DMACH_SPI0_RX },

	{ "s3c2410-spi.0", "tx", (void *)DMACH_SPI0_TX },

	{ "s3c2410-spi.1", "rx", (void *)DMACH_SPI1_RX },

	{ "s3c2410-spi.1", "tx", (void *)DMACH_SPI1_TX },

	/*

	 * The DMA request source[1] (DMACH_UARTx_SRC2) are

	 * not used in the UART driver.

	 */

	{ "s3c2410-uart.0", "rx", (void *)DMACH_UART0 },

	{ "s3c2410-uart.0", "tx", (void *)DMACH_UART0 },

	{ "s3c2410-uart.1", "rx", (void *)DMACH_UART1 },

	{ "s3c2410-uart.1", "tx", (void *)DMACH_UART1 },

	{ "s3c2410-uart.2", "rx", (void *)DMACH_UART2 },

	{ "s3c2410-uart.2", "tx", (void *)DMACH_UART2 },

	{ "s3c24xx-iis", "rx", (void *)DMACH_I2S_IN },

	{ "s3c24xx-iis", "tx", (void *)DMACH_I2S_OUT },

	{ "s3c-hsudc", "rx0", (void *)DMACH_USB_EP1 },

	{ "s3c-hsudc", "tx0", (void *)DMACH_USB_EP1 },

	{ "s3c-hsudc", "rx1", (void *)DMACH_USB_EP2 },

	{ "s3c-hsudc", "tx1", (void *)DMACH_USB_EP2 },

	{ "s3c-hsudc", "rx2", (void *)DMACH_USB_EP3 },

	{ "s3c-hsudc", "tx2", (void *)DMACH_USB_EP3 },

	{ "s3c-hsudc", "rx3", (void *)DMACH_USB_EP4 },

	{ "s3c-hsudc", "tx3", (void *)DMACH_USB_EP4 }

};



static struct s3c24xx_dma_platdata s3c2410_dma_platdata = {

	.num_phy_channels = 4,

	.channels = s3c2410_dma_channels,

	.num_channels = DMACH_MAX,

	.slave_map = s3c2410_dma_slave_map,

	.slavecnt = ARRAY_SIZE(s3c2410_dma_slave_map),

};



struct platform_device s3c2410_device_dma = {
@@ -388,10 +418,36 @@ static struct s3c24xx_dma_channel s3c2412_dma_channels[DMACH_MAX] = { 
	[DMACH_USB_EP4] = { S3C24XX_DMA_APB, true, 16 },

};



static const struct dma_slave_map s3c2412_dma_slave_map[] = {

	{ "s3c2412-sdi", "rx-tx", (void *)DMACH_SDI },

	{ "s3c2412-spi.0", "rx", (void *)DMACH_SPI0_RX },

	{ "s3c2412-spi.0", "tx", (void *)DMACH_SPI0_TX },

	{ "s3c2412-spi.1", "rx", (void *)DMACH_SPI1_RX },

	{ "s3c2412-spi.1", "tx", (void *)DMACH_SPI1_TX },

	{ "s3c2440-uart.0", "rx", (void *)DMACH_UART0 },

	{ "s3c2440-uart.0", "tx", (void *)DMACH_UART0 },

	{ "s3c2440-uart.1", "rx", (void *)DMACH_UART1 },

	{ "s3c2440-uart.1", "tx", (void *)DMACH_UART1 },

	{ "s3c2440-uart.2", "rx", (void *)DMACH_UART2 },

	{ "s3c2440-uart.2", "tx", (void *)DMACH_UART2 },

	{ "s3c2412-iis", "rx", (void *)DMACH_I2S_IN },

	{ "s3c2412-iis", "tx", (void *)DMACH_I2S_OUT },

	{ "s3c-hsudc", "rx0", (void *)DMACH_USB_EP1 },

	{ "s3c-hsudc", "tx0", (void *)DMACH_USB_EP1 },

	{ "s3c-hsudc", "rx1", (void *)DMACH_USB_EP2 },

	{ "s3c-hsudc", "tx1", (void *)DMACH_USB_EP2 },

	{ "s3c-hsudc", "rx2", (void *)DMACH_USB_EP3 },

	{ "s3c-hsudc", "tx2", (void *)DMACH_USB_EP3 },

	{ "s3c-hsudc", "rx3", (void *)DMACH_USB_EP4 },

	{ "s3c-hsudc", "tx3", (void *)DMACH_USB_EP4 }

};



static struct s3c24xx_dma_platdata s3c2412_dma_platdata = {

	.num_phy_channels = 4,

	.channels = s3c2412_dma_channels,

	.num_channels = DMACH_MAX,

	.slave_map = s3c2412_dma_slave_map,

	.slavecnt = ARRAY_SIZE(s3c2412_dma_slave_map),

};



struct platform_device s3c2412_device_dma = {
@@ -534,10 +590,30 @@ static struct s3c24xx_dma_channel s3c2443_dma_channels[DMACH_MAX] = { 
	[DMACH_MIC_IN] = { S3C24XX_DMA_APB, true, 29 },

};



static const struct dma_slave_map s3c2443_dma_slave_map[] = {

	{ "s3c2440-sdi", "rx-tx", (void *)DMACH_SDI },

	{ "s3c2443-spi.0", "rx", (void *)DMACH_SPI0_RX },

	{ "s3c2443-spi.0", "tx", (void *)DMACH_SPI0_TX },

	{ "s3c2443-spi.1", "rx", (void *)DMACH_SPI1_RX },

	{ "s3c2443-spi.1", "tx", (void *)DMACH_SPI1_TX },

	{ "s3c2440-uart.0", "rx", (void *)DMACH_UART0 },

	{ "s3c2440-uart.0", "tx", (void *)DMACH_UART0 },

	{ "s3c2440-uart.1", "rx", (void *)DMACH_UART1 },

	{ "s3c2440-uart.1", "tx", (void *)DMACH_UART1 },

	{ "s3c2440-uart.2", "rx", (void *)DMACH_UART2 },

	{ "s3c2440-uart.2", "tx", (void *)DMACH_UART2 },

	{ "s3c2440-uart.3", "rx", (void *)DMACH_UART3 },

	{ "s3c2440-uart.3", "tx", (void *)DMACH_UART3 },

	{ "s3c24xx-iis", "rx", (void *)DMACH_I2S_IN },

	{ "s3c24xx-iis", "tx", (void *)DMACH_I2S_OUT },

};



static struct s3c24xx_dma_platdata s3c2443_dma_platdata = {

	.num_phy_channels = 6,

	.channels = s3c2443_dma_channels,

	.num_channels = DMACH_MAX,

	.slave_map = s3c2443_dma_slave_map,

	.slavecnt = ARRAY_SIZE(s3c2443_dma_slave_map),

};



struct platform_device s3c2443_device_dma = {