ux500: dma: update

commit c5ab7e3bae4a50be4a2fa02b7fb9e8c2c79cc9b3
Author: Johan Palmaeus <johan.xj.palmaeus@stericsson.com>
Date:   Fri Aug 12 10:52:29 2011 +0200

    ux500: restore DMA lcla register after sleep

    When DMA is restored after a suspend/resume the LCLA (logical channels
    link base address) register needs to be restored as well.

    ST-Ericsson ID: 350564

commit d74774160e8e6d259c4022d042646575f7e1db59
Author: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Date:   Mon Jul 4 18:41:44 2011 +0200

    ux500: Use other logical DMA channel for SD-card

    Previously PoP eMMC SDI has been in the same event group as
    SD-card SDI, which means that they have been sharing the
    same physical DMA channels. Moreover one of those channels
    was reserved for other purposes, causing transfers for each
    interface to compete for the same physical DMA channel. In
    addition there appears to be a HW issue that causes data to
    be lost in the middle of DMA transfers, which ended up with
    DMAC and MMCI not agreeing on how much data was still to be
    transferred, thereby resulting in a hang and eventually in
    a crash.

    This patch moves SD-card DMA transfers to another event
    group which means that it no longer competes for the same
    physical DMA channel. This results in that no data is lost
    in the transfers and no hang is observed.

    ST-Ericsson ID: 342919

commit aaddceebd5262d9a2a7e5c9f7611bacf53f5e13c
Author: Rabin Vincent <rabin.vincent@stericsson.com>
Date:   Fri Jun 24 09:10:03 2011 +0530

    u5500: handle DMA request mapping change on DB5500v2

    The DMA request mapping is changed in DB5500v2 "to allow
    more flexibility in physical resources in the DMAC that
    executes transfer for Crypto1 and Hash1".

    ST-Ericsson ID: 349062

commit cc13b8c37ef91ba9e307912cd03746eee8d883fd
Author: Jonas Aaberg <jonas.aberg@stericsson.com>
Date:   Wed Jun 1 08:32:36 2011 +0200

    ARM: u8500: dma: Remove V1 support

    ST-Ericsson ID: 342987

commit 06169c912fe26f8aa22f57fbb326f0b4ae23fb3f
Author: Rabin Vincent <rabin.vincent@stericsson.com>
Date:   Tue May 31 11:44:26 2011 +0530

    ux500: pm_runtime: add DMA to ux500 power domain

    ST-Ericsson ID: 343071

commit 58dfef141cf59e48ec1f1f188b0057d189780669
Author: Pawel Szyszuk <pawel.szyszuk@stericsson.com>
Date:   Mon Apr 18 09:39:42 2011 +0100

    arch: arm: ST-E HSI controller

commit ea29c03fbe127c447edac6d5b6b5ac941f534de4
Author: Joakim Bech <joakim.xx.bech@stericsson.com>
Date:   Mon Dec 6 14:42:38 2010 +0100

    crypto: ux500: AES ECB converted to ablk_cipher and supports DMA.

    - DMA support for AES_ECB added.

    ST-Ericsson ID: AP277474

commit 201ffd3eca209fd4d799c007a1070a07858595db
Author: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Date:   Wed Dec 1 18:19:49 2010 +0530

    ux500:amba-pl022: Add board specific data for DMA mode.

    Add the board specific SSP data to enable the dma mode.

    ST-Ericsson ID: ER267472

commit 4471f55e6721153eaf9491772315f6b23a8529e5
Author: Rabin Vincent <rabin.vincent@stericsson.com>
Date:   Thu Dec 9 15:09:20 2010 +0530

    ux500: restore DMA global registers after sleep

    In the platform there are clients of the DMA block that does not use the DMA
    driver, examples are DMA access from the multimedia CPUs or the security
    application.

    During suspend / resume or during power down of the DMA block in CPU idle the
    DMA block is reset and these clients that does not use the driver cannot setup
    a DMA transer without initializing the global registers of the DMA block.

    This may cause some problems since this would not be in sync with the DMA
    driver.  Instead the kernel can restore a good state of the global registers
    when the power have been restored in the DMA block, either from resume or by
    hooks from the idle process.

    ST-Ericsson ID: ER283328

commit 0cc7db9c066a0b05e6ae88e3e4c6425e49543706
Author: Rabin Vincent <rabin.vincent@stericsson.com>
Date:   Thu Oct 28 11:29:50 2010 +0530

    u5500: DMA updates

    - Add some memcpy event lines
    - Add MSP DMA configuration
    - Remove channel reserved for MMDSP since it does not exist on 5500

Change-Id: I13c9389b6368500f748fc1834a7339a9c2333187

1 files changed, 294 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/dma-db8500.c b/arch/arm/mach-ux500/dma-db8500.c
new file mode 100644
index 00000000000..fba1f56d329
--- /dev/null
+++ b/arch/arm/mach-ux500/dma-db8500.c
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2007-2010
+ *
+ * Author: Per Friden <per.friden@stericsson.com> for ST-Ericsson
+ * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <plat/ste_dma40.h>
+
+#include <mach/hsi.h>
+#include <mach/setup.h>
+#include <mach/ste-dma40-db8500.h>
+
+#include "pm/context.h"
+#include "pm/pm.h"
+
+static struct resource dma40_resources[] = {
+	[0] = {
+		.start = U8500_DMA_BASE,
+		.end   = U8500_DMA_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+		.name  = "base",
+	},
+	[1] = {
+		.start = U8500_DMA_LCPA_BASE,
+		.end   = U8500_DMA_LCPA_BASE + 2 * SZ_1K - 1,
+		.flags = IORESOURCE_MEM,
+		.name  = "lcpa",
+	},
+	[2] = {
+		.start = IRQ_DB8500_DMA,
+		.end   = IRQ_DB8500_DMA,
+		.flags = IORESOURCE_IRQ
+	}
+};
+
+/* Default configuration for physcial memcpy */
+static struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
+	.mode = STEDMA40_MODE_PHYSICAL,
+	.dir = STEDMA40_MEM_TO_MEM,
+
+	.src_info.data_width = STEDMA40_BYTE_WIDTH,
+	.src_info.psize = STEDMA40_PSIZE_PHY_1,
+	.src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
+
+	.dst_info.data_width = STEDMA40_BYTE_WIDTH,
+	.dst_info.psize = STEDMA40_PSIZE_PHY_1,
+	.dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
+
+};
+
+/* Default configuration for logical memcpy */
+static struct stedma40_chan_cfg dma40_memcpy_conf_log = {
+	.dir = STEDMA40_MEM_TO_MEM,
+
+	.src_info.data_width = STEDMA40_BYTE_WIDTH,
+	.src_info.psize = STEDMA40_PSIZE_LOG_1,
+	.src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
+
+	.dst_info.data_width = STEDMA40_BYTE_WIDTH,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_1,
+	.dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL,
+
+};
+
+/*
+ * Mapping between soruce event lines and physical device address
+ * This was created assuming that the event line is tied to a device and
+ * therefore the address is constant, however this is not true for at least
+ * USB, and the values are just placeholders for USB.  This table is preserved
+ * and used for now.
+ */
+static dma_addr_t dma40_rx_map[DB8500_DMA_NR_DEV] = {
+	[DB8500_DMA_DEV0_SPI0_RX] = 0,
+	[DB8500_DMA_DEV1_SD_MMC0_RX] = U8500_SDI0_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV2_SD_MMC1_RX] = 0,
+	[DB8500_DMA_DEV3_SD_MMC2_RX] = 0,
+	[DB8500_DMA_DEV4_I2C1_RX] = 0,
+	[DB8500_DMA_DEV5_I2C3_RX] = 0,
+	[DB8500_DMA_DEV6_I2C2_RX] = 0,
+	[DB8500_DMA_DEV7_I2C4_RX] = 0,
+	[DB8500_DMA_DEV8_SSP0_RX] =  U8500_SSP0_BASE + SSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV9_SSP1_RX] = 0,
+	[DB8500_DMA_DEV10_MCDE_RX] = 0,
+	[DB8500_DMA_DEV11_UART2_RX] = 0,
+	[DB8500_DMA_DEV12_UART1_RX] = 0,
+	[DB8500_DMA_DEV13_UART0_RX] = 0,
+	[DB8500_DMA_DEV14_MSP2_RX] = U8500_MSP2_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV15_I2C0_RX] = 0,
+	[DB8500_DMA_DEV16_USB_OTG_IEP_7_15] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV17_USB_OTG_IEP_6_14] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV18_USB_OTG_IEP_5_13] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV19_USB_OTG_IEP_4_12] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV20_SLIM0_CH0_RX_HSI_RX_CH0] = U8500_HSIR_BASE + 0x0 + STE_HSI_RX_BUFFERX,
+	[DB8500_DMA_DEV21_SLIM0_CH1_RX_HSI_RX_CH1] = U8500_HSIR_BASE + 0x4 + STE_HSI_RX_BUFFERX,
+	[DB8500_DMA_DEV22_SLIM0_CH2_RX_HSI_RX_CH2] = U8500_HSIR_BASE + 0x8 + STE_HSI_RX_BUFFERX,
+	[DB8500_DMA_DEV23_SLIM0_CH3_RX_HSI_RX_CH3] = U8500_HSIR_BASE + 0xC + STE_HSI_RX_BUFFERX,
+	[DB8500_DMA_DEV24_SRC_SXA0_RX_TX] = 0,
+	[DB8500_DMA_DEV25_SRC_SXA1_RX_TX] = 0,
+	[DB8500_DMA_DEV26_SRC_SXA2_RX_TX] = 0,
+	[DB8500_DMA_DEV27_SRC_SXA3_RX_TX] = 0,
+	[DB8500_DMA_DEV28_SD_MM2_RX] = U8500_SDI2_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV29_SD_MM0_RX] = U8500_SDI0_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV30_MSP3_RX] = U8500_MSP3_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV31_MSP0_RX_SLIM0_CH0_RX] = U8500_MSP0_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV32_SD_MM1_RX] = U8500_SDI1_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV33_SPI2_RX] = 0,
+	[DB8500_DMA_DEV34_I2C3_RX2] = 0,
+	[DB8500_DMA_DEV35_SPI1_RX] = 0,
+	[DB8500_DMA_DEV36_USB_OTG_IEP_3_11] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV37_USB_OTG_IEP_2_10] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV38_USB_OTG_IEP_1_9] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV39_USB_OTG_IEP_8] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV40_SPI3_RX] = 0,
+	[DB8500_DMA_DEV41_SD_MM3_RX] = 0,
+	[DB8500_DMA_DEV42_SD_MM4_RX] = U8500_SDI4_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV43_SD_MM5_RX] = 0,
+	[DB8500_DMA_DEV44_SRC_SXA4_RX_TX] = 0,
+	[DB8500_DMA_DEV45_SRC_SXA5_RX_TX] = 0,
+	[DB8500_DMA_DEV46_SLIM0_CH8_RX_SRC_SXA6_RX_TX] = 0,
+	[DB8500_DMA_DEV47_SLIM0_CH9_RX_SRC_SXA7_RX_TX] = 0,
+	[DB8500_DMA_DEV48_CAC1_RX] = U8500_CRYP1_BASE + CRYP1_RX_REG_OFFSET,
+	/* 49, 50 and 51 are not used */
+	[DB8500_DMA_DEV52_SLIM0_CH4_RX_HSI_RX_CH4] = 0,
+	[DB8500_DMA_DEV53_SLIM0_CH5_RX_HSI_RX_CH5] = 0,
+	[DB8500_DMA_DEV54_SLIM0_CH6_RX_HSI_RX_CH6] = 0,
+	[DB8500_DMA_DEV55_SLIM0_CH7_RX_HSI_RX_CH7] = 0,
+	/* 56, 57, 58, 59 and 60 are not used */
+	[DB8500_DMA_DEV61_CAC0_RX] = 0,
+	/* 62 and 63 are not used */
+};
+
+/* Mapping between destination event lines and physical device address */
+static const dma_addr_t dma40_tx_map[DB8500_DMA_NR_DEV] = {
+	[DB8500_DMA_DEV0_SPI0_TX] = 0,
+	[DB8500_DMA_DEV1_SD_MMC0_TX] = U8500_SDI0_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV2_SD_MMC1_TX] = 0,
+	[DB8500_DMA_DEV3_SD_MMC2_TX] = 0,
+	[DB8500_DMA_DEV4_I2C1_TX] = 0,
+	[DB8500_DMA_DEV5_I2C3_TX] = 0,
+	[DB8500_DMA_DEV6_I2C2_TX] = 0,
+	[DB8500_DMA_DEV7_I2C4_TX] = 0,
+	[DB8500_DMA_DEV8_SSP0_TX] = U8500_SSP0_BASE + SSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV9_SSP1_TX] = 0,
+	/* 10 is not used*/
+	[DB8500_DMA_DEV11_UART2_TX] = 0,
+	[DB8500_DMA_DEV12_UART1_TX] = 0,
+	[DB8500_DMA_DEV13_UART0_TX] = 0,
+	[DB8500_DMA_DEV14_MSP2_TX] = U8500_MSP2_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV15_I2C0_TX] = 0,
+	[DB8500_DMA_DEV16_USB_OTG_OEP_7_15] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV17_USB_OTG_OEP_6_14] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV18_USB_OTG_OEP_5_13] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV19_USB_OTG_OEP_4_12] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV20_SLIM0_CH0_TX_HSI_TX_CH0] = U8500_HSIT_BASE + 0x0 + STE_HSI_TX_BUFFERX,
+	[DB8500_DMA_DEV21_SLIM0_CH1_TX_HSI_TX_CH1] = U8500_HSIT_BASE + 0x4 + STE_HSI_TX_BUFFERX,
+	[DB8500_DMA_DEV22_SLIM0_CH2_TX_HSI_TX_CH2] = U8500_HSIT_BASE + 0x8 + STE_HSI_TX_BUFFERX,
+	[DB8500_DMA_DEV23_SLIM0_CH3_TX_HSI_TX_CH3] = U8500_HSIT_BASE + 0xC + STE_HSI_TX_BUFFERX,
+	[DB8500_DMA_DEV24_DST_SXA0_RX_TX] = 0,
+	[DB8500_DMA_DEV25_DST_SXA1_RX_TX] = 0,
+	[DB8500_DMA_DEV26_DST_SXA2_RX_TX] = 0,
+	[DB8500_DMA_DEV27_DST_SXA3_RX_TX] = 0,
+	[DB8500_DMA_DEV28_SD_MM2_TX] = U8500_SDI2_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV29_SD_MM0_TX] = U8500_SDI0_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV30_MSP1_TX] = U8500_MSP1_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV31_MSP0_TX_SLIM0_CH0_TX] = U8500_MSP0_BASE + MSP_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV32_SD_MM1_TX] = U8500_SDI1_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV33_SPI2_TX] = 0,
+	[DB8500_DMA_DEV34_I2C3_TX2] = 0,
+	[DB8500_DMA_DEV35_SPI1_TX] = 0,
+	[DB8500_DMA_DEV36_USB_OTG_OEP_3_11] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV37_USB_OTG_OEP_2_10] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV38_USB_OTG_OEP_1_9] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV39_USB_OTG_OEP_8] = U8500_USBOTG_BASE,
+	[DB8500_DMA_DEV40_SPI3_TX] = 0,
+	[DB8500_DMA_DEV41_SD_MM3_TX] = 0,
+	[DB8500_DMA_DEV42_SD_MM4_TX] = U8500_SDI4_BASE + SD_MMC_TX_RX_REG_OFFSET,
+	[DB8500_DMA_DEV43_SD_MM5_TX] = 0,
+	[DB8500_DMA_DEV44_DST_SXA4_RX_TX] = 0,
+	[DB8500_DMA_DEV45_DST_SXA5_RX_TX] = 0,
+	[DB8500_DMA_DEV46_SLIM0_CH8_TX_DST_SXA6_RX_TX] = 0,
+	[DB8500_DMA_DEV47_SLIM0_CH9_TX_DST_SXA7_RX_TX] = 0,
+	[DB8500_DMA_DEV48_CAC1_TX] = U8500_CRYP1_BASE + CRYP1_TX_REG_OFFSET,
+	[DB8500_DMA_DEV49_CAC1_TX_HAC1_TX] = 0,
+	[DB8500_DMA_DEV50_HAC1_TX] = 0,
+	[DB8500_DMA_MEMCPY_TX_0] = 0,
+	[DB8500_DMA_DEV52_SLIM1_CH4_TX_HSI_TX_CH4] = 0,
+	[DB8500_DMA_DEV53_SLIM1_CH5_TX_HSI_TX_CH5] = 0,
+	[DB8500_DMA_DEV54_SLIM1_CH6_TX_HSI_TX_CH6] = 0,
+	[DB8500_DMA_DEV55_SLIM1_CH7_TX_HSI_TX_CH7] = 0,
+	[DB8500_DMA_MEMCPY_TX_1] = 0,
+	[DB8500_DMA_MEMCPY_TX_2] = 0,
+	[DB8500_DMA_MEMCPY_TX_3] = 0,
+	[DB8500_DMA_MEMCPY_TX_4] = 0,
+	[DB8500_DMA_MEMCPY_TX_5] = 0,
+	[DB8500_DMA_DEV61_CAC0_TX] = 0,
+	[DB8500_DMA_DEV62_CAC0_TX_HAC0_TX] = 0,
+	[DB8500_DMA_DEV63_HAC0_TX] = 0,
+};
+
+/* Reserved event lines for memcpy only */
+static int dma40_memcpy_event[] = {
+	DB8500_DMA_MEMCPY_TX_0,
+	DB8500_DMA_MEMCPY_TX_1,
+	DB8500_DMA_MEMCPY_TX_2,
+	DB8500_DMA_MEMCPY_TX_3,
+	DB8500_DMA_MEMCPY_TX_4,
+	DB8500_DMA_MEMCPY_TX_5,
+};
+
+static struct stedma40_platform_data dma40_plat_data = {
+	.dev_len = ARRAY_SIZE(dma40_rx_map),
+	.dev_rx = dma40_rx_map,
+	.dev_tx = dma40_tx_map,
+	.memcpy = dma40_memcpy_event,
+	.memcpy_len = ARRAY_SIZE(dma40_memcpy_event),
+	.memcpy_conf_phy = &dma40_memcpy_conf_phy,
+	.memcpy_conf_log = &dma40_memcpy_conf_log,
+	/* Audio is using physical channel 2 from MMDSP */
+	.disabled_channels = {2, -1},
+};
+
+#ifdef CONFIG_UX500_CONTEXT
+#define D40_DREG_GCC		0x000
+#define D40_DREG_LCPA		0x020
+
+static void __iomem *base;
+
+static int dma_context_notifier_call(struct notifier_block *this,
+				     unsigned long event, void *data)
+{
+	static unsigned long lcpa;
+	static unsigned long gcc;
+
+	switch (event) {
+	case CONTEXT_APE_SAVE:
+		lcpa = readl(base + D40_DREG_LCPA);
+		gcc = readl(base + D40_DREG_GCC);
+		break;
+
+	case CONTEXT_APE_RESTORE:
+		writel(gcc, base + D40_DREG_GCC);
+		writel(lcpa, base + D40_DREG_LCPA);
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block dma_context_notifier = {
+	.notifier_call = dma_context_notifier_call,
+};
+
+static void dma_context_notifier_init(void)
+{
+	base = ioremap(dma40_resources[0].start, resource_size(&dma40_resources[0]));
+	if (WARN_ON(!base))
+		return;
+
+	WARN_ON(context_ape_notifier_register(&dma_context_notifier));
+}
+#else
+static void dma_context_notifier_init(void)
+{
+}
+#endif
+
+static struct platform_device dma40_device = {
+	.dev = {
+		.platform_data = &dma40_plat_data,
+#ifdef CONFIG_PM
+		.pwr_domain = &ux500_dev_power_domain,
+#endif
+	},
+	.name		= "dma40",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(dma40_resources),
+	.resource	= dma40_resources
+};
+
+void __init db8500_dma_init(void)
+{
+	int ret;
+
+	ret = platform_device_register(&dma40_device);
+	if (ret)
+		dev_err(&dma40_device.dev, "unable to register device: %d\n", ret);
+
+	dma_context_notifier_init();
+}