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Subject[PATCH 02/19] mmc: mmci: merge qcom dml feature into mmci dma
Date
From: Ludovic Barre <ludovic.barre@st.com>

This patch integrates qcom dml feature into mmci_dma file.
Qualcomm Data Mover lite/local is already a variant of mmci dmaengine.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
drivers/mmc/host/Makefile | 1 -
drivers/mmc/host/mmci.c | 1 -
drivers/mmc/host/mmci.h | 35 ++++++++
drivers/mmc/host/mmci_dma.c | 135 ++++++++++++++++++++++++++++-
drivers/mmc/host/mmci_qcom_dml.c | 177 ---------------------------------------
drivers/mmc/host/mmci_qcom_dml.h | 31 -------
6 files changed, 169 insertions(+), 211 deletions(-)
delete mode 100644 drivers/mmc/host/mmci_qcom_dml.c
delete mode 100644 drivers/mmc/host/mmci_qcom_dml.h

diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index daecaa98..608a020 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -5,7 +5,6 @@

obj-$(CONFIG_MMC_ARMMMCI) += armmmci.o
armmmci-y := mmci.o mmci_dma.o
-armmmci-$(CONFIG_MMC_QCOM_DML) += mmci_qcom_dml.o
obj-$(CONFIG_MMC_PXA) += pxamci.o
obj-$(CONFIG_MMC_MXC) += mxcmmc.o
obj-$(CONFIG_MMC_MXS) += mxs-mmc.o
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 8868be0..7a15afd 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -43,7 +43,6 @@

#include "mmci.h"
#include "mmci_dma.h"
-#include "mmci_qcom_dml.h"

#define DRIVER_NAME "mmci-pl18x"

diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index a73bb98..f7cba35 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -194,6 +194,41 @@

#define MMCI_PINCTRL_STATE_OPENDRAIN "opendrain"

+/* QCOM DML Registers */
+#define DML_CONFIG 0x00
+#define PRODUCER_CRCI_MSK GENMASK(1, 0)
+#define PRODUCER_CRCI_DISABLE 0
+#define PRODUCER_CRCI_X_SEL BIT(0)
+#define PRODUCER_CRCI_Y_SEL BIT(1)
+#define CONSUMER_CRCI_MSK GENMASK(3, 2)
+#define CONSUMER_CRCI_DISABLE 0
+#define CONSUMER_CRCI_X_SEL BIT(2)
+#define CONSUMER_CRCI_Y_SEL BIT(3)
+#define PRODUCER_TRANS_END_EN BIT(4)
+#define BYPASS BIT(16)
+#define DIRECT_MODE BIT(17)
+#define INFINITE_CONS_TRANS BIT(18)
+
+#define DML_SW_RESET 0x08
+#define DML_PRODUCER_START 0x0c
+#define DML_CONSUMER_START 0x10
+#define DML_PRODUCER_PIPE_LOGICAL_SIZE 0x14
+#define DML_CONSUMER_PIPE_LOGICAL_SIZE 0x18
+#define DML_PIPE_ID 0x1c
+#define PRODUCER_PIPE_ID_SHFT 0
+#define PRODUCER_PIPE_ID_MSK GENMASK(4, 0)
+#define CONSUMER_PIPE_ID_SHFT 16
+#define CONSUMER_PIPE_ID_MSK GENMASK(20, 16)
+
+#define DML_PRODUCER_BAM_BLOCK_SIZE 0x24
+#define DML_PRODUCER_BAM_TRANS_SIZE 0x28
+
+/* other definitions */
+#define PRODUCER_PIPE_LOGICAL_SIZE 4096
+#define CONSUMER_PIPE_LOGICAL_SIZE 4096
+
+#define DML_OFFSET 0x800
+
struct clk;
struct dma_chan;

diff --git a/drivers/mmc/host/mmci_dma.c b/drivers/mmc/host/mmci_dma.c
index 98a542d..dd7dae5 100644
--- a/drivers/mmc/host/mmci_dma.c
+++ b/drivers/mmc/host/mmci_dma.c
@@ -8,11 +8,11 @@
#include <linux/dmaengine.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
+#include <linux/of.h>
#include <linux/scatterlist.h>

#include "mmci.h"
#include "mmci_dma.h"
-#include "mmci_qcom_dml.h"

int mmci_dma_setup(struct mmci_host *host)
{
@@ -101,6 +101,139 @@ struct dmaengine_priv {

#define dma_inprogress(dmae) ((dmae)->dma_in_progress)

+#ifdef CONFIG_MMC_QCOM_DML
+void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
+{
+ u32 config;
+ void __iomem *base = host->base + DML_OFFSET;
+
+ if (data->flags & MMC_DATA_READ) {
+ /* Read operation: configure DML for producer operation */
+ /* Set producer CRCI-x and disable consumer CRCI */
+ config = readl_relaxed(base + DML_CONFIG);
+ config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_X_SEL;
+ config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_DISABLE;
+ writel_relaxed(config, base + DML_CONFIG);
+
+ /* Set the Producer BAM block size */
+ writel_relaxed(data->blksz, base + DML_PRODUCER_BAM_BLOCK_SIZE);
+
+ /* Set Producer BAM Transaction size */
+ writel_relaxed(data->blocks * data->blksz,
+ base + DML_PRODUCER_BAM_TRANS_SIZE);
+ /* Set Producer Transaction End bit */
+ config = readl_relaxed(base + DML_CONFIG);
+ config |= PRODUCER_TRANS_END_EN;
+ writel_relaxed(config, base + DML_CONFIG);
+ /* Trigger producer */
+ writel_relaxed(1, base + DML_PRODUCER_START);
+ } else {
+ /* Write operation: configure DML for consumer operation */
+ /* Set consumer CRCI-x and disable producer CRCI*/
+ config = readl_relaxed(base + DML_CONFIG);
+ config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_X_SEL;
+ config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_DISABLE;
+ writel_relaxed(config, base + DML_CONFIG);
+ /* Clear Producer Transaction End bit */
+ config = readl_relaxed(base + DML_CONFIG);
+ config &= ~PRODUCER_TRANS_END_EN;
+ writel_relaxed(config, base + DML_CONFIG);
+ /* Trigger consumer */
+ writel_relaxed(1, base + DML_CONSUMER_START);
+ }
+
+ /* make sure the dml is configured before dma is triggered */
+ wmb();
+}
+
+static int of_get_dml_pipe_index(struct device_node *np, const char *name)
+{
+ int index;
+ struct of_phandle_args dma_spec;
+
+ index = of_property_match_string(np, "dma-names", name);
+
+ if (index < 0)
+ return -ENODEV;
+
+ if (of_parse_phandle_with_args(np, "dmas", "#dma-cells", index,
+ &dma_spec))
+ return -ENODEV;
+
+ if (dma_spec.args_count)
+ return dma_spec.args[0];
+
+ return -ENODEV;
+}
+
+/* Initialize the dml hardware connected to SD Card controller */
+int dml_hw_init(struct mmci_host *host, struct device_node *np)
+{
+ u32 config;
+ void __iomem *base;
+ int consumer_id, producer_id;
+
+ consumer_id = of_get_dml_pipe_index(np, "tx");
+ producer_id = of_get_dml_pipe_index(np, "rx");
+
+ if (producer_id < 0 || consumer_id < 0)
+ return -ENODEV;
+
+ base = host->base + DML_OFFSET;
+
+ /* Reset the DML block */
+ writel_relaxed(1, base + DML_SW_RESET);
+
+ /* Disable the producer and consumer CRCI */
+ config = (PRODUCER_CRCI_DISABLE | CONSUMER_CRCI_DISABLE);
+ /*
+ * Disable the bypass mode. Bypass mode will only be used
+ * if data transfer is to happen in PIO mode and don't
+ * want the BAM interface to connect with SDCC-DML.
+ */
+ config &= ~BYPASS;
+ /*
+ * Disable direct mode as we don't DML to MASTER the AHB bus.
+ * BAM connected with DML should MASTER the AHB bus.
+ */
+ config &= ~DIRECT_MODE;
+ /*
+ * Disable infinite mode transfer as we won't be doing any
+ * infinite size data transfers. All data transfer will be
+ * of finite data size.
+ */
+ config &= ~INFINITE_CONS_TRANS;
+ writel_relaxed(config, base + DML_CONFIG);
+
+ /*
+ * Initialize the logical BAM pipe size for producer
+ * and consumer.
+ */
+ writel_relaxed(PRODUCER_PIPE_LOGICAL_SIZE,
+ base + DML_PRODUCER_PIPE_LOGICAL_SIZE);
+ writel_relaxed(CONSUMER_PIPE_LOGICAL_SIZE,
+ base + DML_CONSUMER_PIPE_LOGICAL_SIZE);
+
+ /* Initialize Producer/consumer pipe id */
+ writel_relaxed(producer_id | (consumer_id << CONSUMER_PIPE_ID_SHFT),
+ base + DML_PIPE_ID);
+
+ /* Make sure dml initialization is finished */
+ mb();
+
+ return 0;
+}
+#else
+static inline int dml_hw_init(struct mmci_host *host, struct device_node *np)
+{
+ return -EINVAL;
+}
+
+static inline void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
+{
+}
+#endif /* CONFIG_MMC_QCOM_DML */
+
static int dmaengine_setup(struct mmci_host *host)
{
const char *rxname, *txname;
diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c
deleted file mode 100644
index 00750c9..0000000
--- a/drivers/mmc/host/mmci_qcom_dml.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- *
- * Copyright (c) 2011, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-#include <linux/of.h>
-#include <linux/of_dma.h>
-#include <linux/bitops.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/card.h>
-#include "mmci.h"
-
-/* Registers */
-#define DML_CONFIG 0x00
-#define PRODUCER_CRCI_MSK GENMASK(1, 0)
-#define PRODUCER_CRCI_DISABLE 0
-#define PRODUCER_CRCI_X_SEL BIT(0)
-#define PRODUCER_CRCI_Y_SEL BIT(1)
-#define CONSUMER_CRCI_MSK GENMASK(3, 2)
-#define CONSUMER_CRCI_DISABLE 0
-#define CONSUMER_CRCI_X_SEL BIT(2)
-#define CONSUMER_CRCI_Y_SEL BIT(3)
-#define PRODUCER_TRANS_END_EN BIT(4)
-#define BYPASS BIT(16)
-#define DIRECT_MODE BIT(17)
-#define INFINITE_CONS_TRANS BIT(18)
-
-#define DML_SW_RESET 0x08
-#define DML_PRODUCER_START 0x0c
-#define DML_CONSUMER_START 0x10
-#define DML_PRODUCER_PIPE_LOGICAL_SIZE 0x14
-#define DML_CONSUMER_PIPE_LOGICAL_SIZE 0x18
-#define DML_PIPE_ID 0x1c
-#define PRODUCER_PIPE_ID_SHFT 0
-#define PRODUCER_PIPE_ID_MSK GENMASK(4, 0)
-#define CONSUMER_PIPE_ID_SHFT 16
-#define CONSUMER_PIPE_ID_MSK GENMASK(20, 16)
-
-#define DML_PRODUCER_BAM_BLOCK_SIZE 0x24
-#define DML_PRODUCER_BAM_TRANS_SIZE 0x28
-
-/* other definitions */
-#define PRODUCER_PIPE_LOGICAL_SIZE 4096
-#define CONSUMER_PIPE_LOGICAL_SIZE 4096
-
-#define DML_OFFSET 0x800
-
-void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
-{
- u32 config;
- void __iomem *base = host->base + DML_OFFSET;
-
- if (data->flags & MMC_DATA_READ) {
- /* Read operation: configure DML for producer operation */
- /* Set producer CRCI-x and disable consumer CRCI */
- config = readl_relaxed(base + DML_CONFIG);
- config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_X_SEL;
- config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_DISABLE;
- writel_relaxed(config, base + DML_CONFIG);
-
- /* Set the Producer BAM block size */
- writel_relaxed(data->blksz, base + DML_PRODUCER_BAM_BLOCK_SIZE);
-
- /* Set Producer BAM Transaction size */
- writel_relaxed(data->blocks * data->blksz,
- base + DML_PRODUCER_BAM_TRANS_SIZE);
- /* Set Producer Transaction End bit */
- config = readl_relaxed(base + DML_CONFIG);
- config |= PRODUCER_TRANS_END_EN;
- writel_relaxed(config, base + DML_CONFIG);
- /* Trigger producer */
- writel_relaxed(1, base + DML_PRODUCER_START);
- } else {
- /* Write operation: configure DML for consumer operation */
- /* Set consumer CRCI-x and disable producer CRCI*/
- config = readl_relaxed(base + DML_CONFIG);
- config = (config & ~CONSUMER_CRCI_MSK) | CONSUMER_CRCI_X_SEL;
- config = (config & ~PRODUCER_CRCI_MSK) | PRODUCER_CRCI_DISABLE;
- writel_relaxed(config, base + DML_CONFIG);
- /* Clear Producer Transaction End bit */
- config = readl_relaxed(base + DML_CONFIG);
- config &= ~PRODUCER_TRANS_END_EN;
- writel_relaxed(config, base + DML_CONFIG);
- /* Trigger consumer */
- writel_relaxed(1, base + DML_CONSUMER_START);
- }
-
- /* make sure the dml is configured before dma is triggered */
- wmb();
-}
-
-static int of_get_dml_pipe_index(struct device_node *np, const char *name)
-{
- int index;
- struct of_phandle_args dma_spec;
-
- index = of_property_match_string(np, "dma-names", name);
-
- if (index < 0)
- return -ENODEV;
-
- if (of_parse_phandle_with_args(np, "dmas", "#dma-cells", index,
- &dma_spec))
- return -ENODEV;
-
- if (dma_spec.args_count)
- return dma_spec.args[0];
-
- return -ENODEV;
-}
-
-/* Initialize the dml hardware connected to SD Card controller */
-int dml_hw_init(struct mmci_host *host, struct device_node *np)
-{
- u32 config;
- void __iomem *base;
- int consumer_id, producer_id;
-
- consumer_id = of_get_dml_pipe_index(np, "tx");
- producer_id = of_get_dml_pipe_index(np, "rx");
-
- if (producer_id < 0 || consumer_id < 0)
- return -ENODEV;
-
- base = host->base + DML_OFFSET;
-
- /* Reset the DML block */
- writel_relaxed(1, base + DML_SW_RESET);
-
- /* Disable the producer and consumer CRCI */
- config = (PRODUCER_CRCI_DISABLE | CONSUMER_CRCI_DISABLE);
- /*
- * Disable the bypass mode. Bypass mode will only be used
- * if data transfer is to happen in PIO mode and don't
- * want the BAM interface to connect with SDCC-DML.
- */
- config &= ~BYPASS;
- /*
- * Disable direct mode as we don't DML to MASTER the AHB bus.
- * BAM connected with DML should MASTER the AHB bus.
- */
- config &= ~DIRECT_MODE;
- /*
- * Disable infinite mode transfer as we won't be doing any
- * infinite size data transfers. All data transfer will be
- * of finite data size.
- */
- config &= ~INFINITE_CONS_TRANS;
- writel_relaxed(config, base + DML_CONFIG);
-
- /*
- * Initialize the logical BAM pipe size for producer
- * and consumer.
- */
- writel_relaxed(PRODUCER_PIPE_LOGICAL_SIZE,
- base + DML_PRODUCER_PIPE_LOGICAL_SIZE);
- writel_relaxed(CONSUMER_PIPE_LOGICAL_SIZE,
- base + DML_CONSUMER_PIPE_LOGICAL_SIZE);
-
- /* Initialize Producer/consumer pipe id */
- writel_relaxed(producer_id | (consumer_id << CONSUMER_PIPE_ID_SHFT),
- base + DML_PIPE_ID);
-
- /* Make sure dml initialization is finished */
- mb();
-
- return 0;
-}
diff --git a/drivers/mmc/host/mmci_qcom_dml.h b/drivers/mmc/host/mmci_qcom_dml.h
deleted file mode 100644
index 6e405d0..0000000
--- a/drivers/mmc/host/mmci_qcom_dml.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- *
- * Copyright (c) 2011, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-#ifndef __MMC_QCOM_DML_H__
-#define __MMC_QCOM_DML_H__
-
-#ifdef CONFIG_MMC_QCOM_DML
-int dml_hw_init(struct mmci_host *host, struct device_node *np);
-void dml_start_xfer(struct mmci_host *host, struct mmc_data *data);
-#else
-static inline int dml_hw_init(struct mmci_host *host, struct device_node *np)
-{
- return -ENOSYS;
-}
-static inline void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
-{
-}
-#endif /* CONFIG_MMC_QCOM_DML */
-
-#endif /* __MMC_QCOM_DML_H__ */
--
2.7.4
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