Merge tag 'drm/for-3.14-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v3.14-rc1

This series of changes brings DRM panel support as well as initial code
to register DSI hosts and peripherals and bind them to DSI drivers. The
panel and DSI code are both used by the simple panel driver.

The Tegra-specific changes build on top of this work to add support for
various panels found on Tegra boards. New drivers enable the DSI host
found on Tegra114 and a special hardware block that calibrates the pads
used for DSI and CSI. The host1x and the display controller drivers gain
basic Tegra124 support. To round of the new features, the DRM driver now
sports a very simple PRIME implementation.

In addition there are various improvements such as the host1x API being
exported so that client drivers (like the Tegra DRM driver) can be built
as modules. HDMI now does better power management and legacy FBDEV can
now be disabled via Kconfig (though it's still enabled by default). A
few sparse warnings have been squashed and various parts of the code
have become more robust.

* tag 'drm/for-3.14-rc1' of git://anongit.freedesktop.org/tegra/linux: (121 commits)
  drm/tegra: fix compile w/ CONFIG_DYNAMIC_DEBUG
  drm/tegra: Add PRIME support
  drm/tegra: Relocate some output-specific code
  drm/tegra: Add Tegra124 DC support
  drm/tegra: Fix small leak on error in tegra_fb_alloc()
  drm/tegra: Make legacy fbdev support optional
  drm/tegra: Sort reverse-dependencies alphabetically
  drm/tegra: Fix return value check
  drm/tegra: Add DSI support
  drm/tegra: Disable outputs for power-saving
  drm/tegra: Track HDMI enable state
  drm/tegra: Fix HDMI audio frequency typo
  drm/tegra: Do not export tegra_bo_ops
  drm/tegra: Remove spurious blank line
  drm/tegra: Increase compile test coverage
  drm/tegra: Allow the driver to be built as a module
  gpu: host1x: Add Tegra124 support
  gpu: host1x: clk_round_rate() can return a zero upon error
  gpu: host1x: Fix build warnings
  gpu: host1x: Increase compile test coverage
  ...

1 files changed, 16 insertions, 22 deletions

diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index dfe79ccc4fb..d5c2a287b7e 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -34,6 +34,7 @@
 #include <linux/of_device.h>
 #include <linux/pagemap.h>
 #include <linux/platform_device.h>
+#include <linux/reset.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
 #include <linux/serial_core.h>
@@ -44,8 +45,6 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 
-#include <linux/clk/tegra.h>
-
 #define TEGRA_UART_TYPE				"TEGRA_UART"
 #define TX_EMPTY_STATUS				(UART_LSR_TEMT | UART_LSR_THRE)
 #define BYTES_TO_ALIGN(x)			((unsigned long)(x) & 0x3)
@@ -103,6 +102,7 @@ struct tegra_uart_port {
 	const struct tegra_uart_chip_data	*cdata;
 
 	struct clk				*uart_clk;
+	struct reset_control			*rst;
 	unsigned int				current_baud;
 
 	/* Register shadow */
@@ -120,7 +120,6 @@ struct tegra_uart_port {
 	bool					rx_timeout;
 	int					rx_in_progress;
 	int					symb_bit;
-	int					dma_req_sel;
 
 	struct dma_chan				*rx_dma_chan;
 	struct dma_chan				*tx_dma_chan;
@@ -832,9 +831,9 @@ static int tegra_uart_hw_init(struct tegra_uart_port *tup)
 	clk_prepare_enable(tup->uart_clk);
 
 	/* Reset the UART controller to clear all previous status.*/
-	tegra_periph_reset_assert(tup->uart_clk);
+	reset_control_assert(tup->rst);
 	udelay(10);
-	tegra_periph_reset_deassert(tup->uart_clk);
+	reset_control_deassert(tup->rst);
 
 	tup->rx_in_progress = 0;
 	tup->tx_in_progress = 0;
@@ -910,15 +909,14 @@ static int tegra_uart_dma_channel_allocate(struct tegra_uart_port *tup,
 	dma_addr_t dma_phys;
 	int ret;
 	struct dma_slave_config dma_sconfig;
-	dma_cap_mask_t mask;
 
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	dma_chan = dma_request_channel(mask, NULL, NULL);
-	if (!dma_chan) {
+	dma_chan = dma_request_slave_channel_reason(tup->uport.dev,
+						dma_to_memory ? "rx" : "tx");
+	if (IS_ERR(dma_chan)) {
+		ret = PTR_ERR(dma_chan);
 		dev_err(tup->uport.dev,
-			"Dma channel is not available, will try later\n");
-		return -EPROBE_DEFER;
+			"DMA channel alloc failed: %d\n", ret);
+		return ret;
 	}
 
 	if (dma_to_memory) {
@@ -938,7 +936,6 @@ static int tegra_uart_dma_channel_allocate(struct tegra_uart_port *tup,
 		dma_buf = tup->uport.state->xmit.buf;
 	}
 
-	dma_sconfig.slave_id = tup->dma_req_sel;
 	if (dma_to_memory) {
 		dma_sconfig.src_addr = tup->uport.mapbase;
 		dma_sconfig.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
@@ -1222,17 +1219,8 @@ static int tegra_uart_parse_dt(struct platform_device *pdev,
 	struct tegra_uart_port *tup)
 {
 	struct device_node *np = pdev->dev.of_node;
-	u32 of_dma[2];
 	int port;
 
-	if (of_property_read_u32_array(np, "nvidia,dma-request-selector",
-				of_dma, 2) >= 0) {
-		tup->dma_req_sel = of_dma[1];
-	} else {
-		dev_err(&pdev->dev, "missing dma requestor in device tree\n");
-		return -EINVAL;
-	}
-
 	port = of_alias_get_id(np, "serial");
 	if (port < 0) {
 		dev_err(&pdev->dev, "failed to get alias id, errno %d\n", port);
@@ -1320,6 +1308,12 @@ static int tegra_uart_probe(struct platform_device *pdev)
 		return PTR_ERR(tup->uart_clk);
 	}
 
+	tup->rst = devm_reset_control_get(&pdev->dev, "serial");
+	if (IS_ERR(tup->rst)) {
+		dev_err(&pdev->dev, "Couldn't get the reset\n");
+		return PTR_ERR(tup->rst);
+	}
+
 	u->iotype = UPIO_MEM32;
 	u->irq = platform_get_irq(pdev, 0);
 	u->regshift = 2;