OMAP: devices: Modify McSPI device to adapt to hwmod framework
Cleans up all base address definitions for omap_mcspi
and adapts the device registration and driver to hwmod framework.
Changes involves:
1) Removing all base address macro defines.
2) Using omap-device layer to register device and utilizing data from
hwmod data file for base address, dma channel number, Irq_number,
device attribute(number of chipselect).
3) Appending base address with pdata reg_offset for omap4 boards.
For omap4 all regs used in driver deviate with reg_offset_macros
defined with an value of 0x100. So pass this offset through pdata
and append the same to base address retrieved from hwmod data file
and we are not mapping *_HL_* regs which are not used in driver.
Signed-off-by: Charulatha V <charu@ti.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Partha Basak <p-basak2@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index f076cc5..f785132 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 2005, 2006 Nokia Corporation
* Author: Samuel Ortiz <samuel.ortiz@nokia.com> and
- * Juha Yrjölä <juha.yrjola@nokia.com>
+ * Juha Yrj�l� <juha.yrjola@nokia.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
@@ -1087,91 +1087,14 @@
return 0;
}
-static u8 __initdata spi1_rxdma_id [] = {
- OMAP24XX_DMA_SPI1_RX0,
- OMAP24XX_DMA_SPI1_RX1,
- OMAP24XX_DMA_SPI1_RX2,
- OMAP24XX_DMA_SPI1_RX3,
-};
-
-static u8 __initdata spi1_txdma_id [] = {
- OMAP24XX_DMA_SPI1_TX0,
- OMAP24XX_DMA_SPI1_TX1,
- OMAP24XX_DMA_SPI1_TX2,
- OMAP24XX_DMA_SPI1_TX3,
-};
-
-static u8 __initdata spi2_rxdma_id[] = {
- OMAP24XX_DMA_SPI2_RX0,
- OMAP24XX_DMA_SPI2_RX1,
-};
-
-static u8 __initdata spi2_txdma_id[] = {
- OMAP24XX_DMA_SPI2_TX0,
- OMAP24XX_DMA_SPI2_TX1,
-};
-
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) \
- || defined(CONFIG_ARCH_OMAP4)
-static u8 __initdata spi3_rxdma_id[] = {
- OMAP24XX_DMA_SPI3_RX0,
- OMAP24XX_DMA_SPI3_RX1,
-};
-
-static u8 __initdata spi3_txdma_id[] = {
- OMAP24XX_DMA_SPI3_TX0,
- OMAP24XX_DMA_SPI3_TX1,
-};
-#endif
-
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-static u8 __initdata spi4_rxdma_id[] = {
- OMAP34XX_DMA_SPI4_RX0,
-};
-
-static u8 __initdata spi4_txdma_id[] = {
- OMAP34XX_DMA_SPI4_TX0,
-};
-#endif
static int __init omap2_mcspi_probe(struct platform_device *pdev)
{
struct spi_master *master;
+ struct omap2_mcspi_platform_config *pdata = pdev->dev.platform_data;
struct omap2_mcspi *mcspi;
struct resource *r;
int status = 0, i;
- const u8 *rxdma_id, *txdma_id;
- unsigned num_chipselect;
-
- switch (pdev->id) {
- case 1:
- rxdma_id = spi1_rxdma_id;
- txdma_id = spi1_txdma_id;
- num_chipselect = 4;
- break;
- case 2:
- rxdma_id = spi2_rxdma_id;
- txdma_id = spi2_txdma_id;
- num_chipselect = 2;
- break;
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) \
- || defined(CONFIG_ARCH_OMAP4)
- case 3:
- rxdma_id = spi3_rxdma_id;
- txdma_id = spi3_txdma_id;
- num_chipselect = 2;
- break;
-#endif
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
- case 4:
- rxdma_id = spi4_rxdma_id;
- txdma_id = spi4_txdma_id;
- num_chipselect = 1;
- break;
-#endif
- default:
- return -EINVAL;
- }
master = spi_alloc_master(&pdev->dev, sizeof *mcspi);
if (master == NULL) {
@@ -1188,7 +1111,7 @@
master->setup = omap2_mcspi_setup;
master->transfer = omap2_mcspi_transfer;
master->cleanup = omap2_mcspi_cleanup;
- master->num_chipselect = num_chipselect;
+ master->num_chipselect = pdata->num_cs;
dev_set_drvdata(&pdev->dev, master);
@@ -1206,6 +1129,8 @@
goto err1;
}
+ r->start += pdata->regs_offset;
+ r->end += pdata->regs_offset;
mcspi->phys = r->start;
mcspi->base = ioremap(r->start, r->end - r->start + 1);
if (!mcspi->base) {
@@ -1240,11 +1165,32 @@
if (mcspi->dma_channels == NULL)
goto err3;
- for (i = 0; i < num_chipselect; i++) {
+ for (i = 0; i < master->num_chipselect; i++) {
+ char dma_ch_name[14];
+ struct resource *dma_res;
+
+ sprintf(dma_ch_name, "rx%d", i);
+ dma_res = platform_get_resource_byname(pdev, IORESOURCE_DMA,
+ dma_ch_name);
+ if (!dma_res) {
+ dev_dbg(&pdev->dev, "cannot get DMA RX channel\n");
+ status = -ENODEV;
+ break;
+ }
+
mcspi->dma_channels[i].dma_rx_channel = -1;
- mcspi->dma_channels[i].dma_rx_sync_dev = rxdma_id[i];
+ mcspi->dma_channels[i].dma_rx_sync_dev = dma_res->start;
+ sprintf(dma_ch_name, "tx%d", i);
+ dma_res = platform_get_resource_byname(pdev, IORESOURCE_DMA,
+ dma_ch_name);
+ if (!dma_res) {
+ dev_dbg(&pdev->dev, "cannot get DMA TX channel\n");
+ status = -ENODEV;
+ break;
+ }
+
mcspi->dma_channels[i].dma_tx_channel = -1;
- mcspi->dma_channels[i].dma_tx_sync_dev = txdma_id[i];
+ mcspi->dma_channels[i].dma_tx_sync_dev = dma_res->start;
}
if (omap2_mcspi_reset(mcspi) < 0)