Intes SoCs, such as Braswell, have DesignWare UART. Split out to separate
module which also will be used for Intel Quark later.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_lpss.c | 279 ++++++++++++++++++++++++++++++++++++
drivers/tty/serial/8250/8250_pci.c | 227 ++---------------------------
drivers/tty/serial/8250/Kconfig | 14 +-
drivers/tty/serial/8250/Makefile | 1 +
4 files changed, 301 insertions(+), 220 deletions(-)
create mode 100644 drivers/tty/serial/8250/8250_lpss.c
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
new file mode 100644
index 0000000..bca4adb
--- /dev/null
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -0,0 +1,279 @@
+/*
+ * 8250_lpss.c - Driver for UART on Intel Braswell and various other Intel SoCs
+ *
+ * Copyright (C) 2016 Intel Corporation
+ * Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/rational.h>
+
+#include <linux/dmaengine.h>
+#include <linux/platform_data/dma-dw.h>
+
+#include "8250.h"
+
+#define PCI_DEVICE_ID_INTEL_BYT_UART1 0x0f0a
+#define PCI_DEVICE_ID_INTEL_BYT_UART2 0x0f0c
+
+#define PCI_DEVICE_ID_INTEL_BSW_UART1 0x228a
+#define PCI_DEVICE_ID_INTEL_BSW_UART2 0x228c
+
+#define PCI_DEVICE_ID_INTEL_BDW_UART1 0x9ce3
+#define PCI_DEVICE_ID_INTEL_BDW_UART2 0x9ce4
+
+/* Intel LPSS specific registers */
+
+#define BYT_PRV_CLK 0x800
+#define BYT_PRV_CLK_EN BIT(0)
+#define BYT_PRV_CLK_M_VAL_SHIFT 1
+#define BYT_PRV_CLK_N_VAL_SHIFT 16
+#define BYT_PRV_CLK_UPDATE BIT(31)
+
+#define BYT_TX_OVF_INT 0x820
+#define BYT_TX_OVF_INT_MASK BIT(1)
+
+struct lpss8250;
+
+struct lpss8250_board {
+ unsigned long freq;
+ unsigned int base_baud;
+ int (*setup)(struct lpss8250 *, struct uart_port *p);
+};
+
+struct lpss8250 {
+ int line;
+ struct lpss8250_board *board;
+
+ /* DMA parameters */
+ struct uart_8250_dma dma;
+ struct dw_dma_slave dma_param;
+ u8 dma_maxburst;
+};
+
+/*****************************************************************************/
+
+static void lpss8250_set_termios(struct uart_port *p,
+ struct ktermios *termios,
+ struct ktermios *old)
+{
+ unsigned int baud = tty_termios_baud_rate(termios);
+ struct lpss8250 *lpss = p->private_data;
+ unsigned long fref = lpss->board->freq, fuart = baud * 16;
+ unsigned long w = BIT(15) - 1;
+ unsigned long m, n;
+ u32 reg;
+
+ /* Get Fuart closer to Fref */
+ fuart *= rounddown_pow_of_two(fref / fuart);
+
+ /*
+ * For baud rates 0.5M, 1M, 1.5M, 2M, 2.5M, 3M, 3.5M and 4M the
+ * dividers must be adjusted.
+ *
+ * uartclk = (m / n) * 100 MHz, where m <= n
+ */
+ rational_best_approximation(fuart, fref, w, w, &m, &n);
+ p->uartclk = fuart;
+
+ /* Reset the clock */
+ reg = (m << BYT_PRV_CLK_M_VAL_SHIFT) | (n << BYT_PRV_CLK_N_VAL_SHIFT);
+ writel(reg, p->membase + BYT_PRV_CLK);
+ reg |= BYT_PRV_CLK_EN | BYT_PRV_CLK_UPDATE;
+ writel(reg, p->membase + BYT_PRV_CLK);
+
+ p->status &= ~UPSTAT_AUTOCTS;
+ if (termios->c_cflag & CRTSCTS)
+ p->status |= UPSTAT_AUTOCTS;
+
+ serial8250_do_set_termios(p, termios, old);
+}
+
+/*****************************************************************************/
+
+static int byt_serial_setup(struct lpss8250 *lpss, struct uart_port *port)
+{
+ struct dw_dma_slave *param = &lpss->dma_param;
+ struct uart_8250_port *up = up_to_u8250p(port);
+ struct pci_dev *pdev = to_pci_dev(port->dev);
+ struct pci_dev *dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_INTEL_BYT_UART1:
+ case PCI_DEVICE_ID_INTEL_BSW_UART1:
+ case PCI_DEVICE_ID_INTEL_BDW_UART1:
+ param->src_id = 3;
+ param->dst_id = 2;
+ break;
+ case PCI_DEVICE_ID_INTEL_BYT_UART2:
+ case PCI_DEVICE_ID_INTEL_BSW_UART2:
+ case PCI_DEVICE_ID_INTEL_BDW_UART2:
+ param->src_id = 5;
+ param->dst_id = 4;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ param->dma_dev = &dma_dev->dev;
+ param->m_master = 0;
+ param->p_master = 1;
+
+ /* TODO: Detect FIFO size automaticaly for DesignWare 8250 */
+ port->fifosize = 64;
+ up->tx_loadsz = 64;
+
+ lpss->dma_maxburst = 16;
+
+ port->set_termios = lpss8250_set_termios;
+
+ /* Disable TX counter interrupts */
+ writel(BYT_TX_OVF_INT_MASK, port->membase + BYT_TX_OVF_INT);
+
+ return 0;
+}
+
+/*****************************************************************************/
+
+static bool lpss8250_dma_filter(struct dma_chan *chan, void *param)
+{
+ struct dw_dma_slave *dws = param;
+
+ if (dws->dma_dev != chan->device->dev)
+ return false;
+
+ chan->private = dws;
+ return true;
+}
+
+static int lpss8250_dma_setup(struct lpss8250 *lpss, struct uart_8250_port *port)
+{
+ struct uart_8250_dma *dma = &lpss->dma;
+ struct dw_dma_slave *param = &lpss->dma_param;
+ struct dw_dma_slave *rx_param, *tx_param;
+ struct device *dev = port->port.dev;
+
+ rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL);
+ if (!rx_param)
+ return -ENOMEM;
+
+ tx_param = devm_kzalloc(dev, sizeof(*tx_param), GFP_KERNEL);
+ if (!tx_param)
+ return -ENOMEM;
+
+ *rx_param = *param;
+ dma->rxconf.src_maxburst = lpss->dma_maxburst;
+
+ *tx_param = *param;
+ dma->txconf.dst_maxburst = lpss->dma_maxburst;
+
+ dma->fn = lpss8250_dma_filter;
+ dma->rx_param = rx_param;
+ dma->tx_param = tx_param;
+
+ port->dma = dma;
+ return 0;
+}
+
+/*****************************************************************************/
+
+static int lpss8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct uart_8250_port uart;
+ struct lpss8250 *lpss;
+ int ret;
+
+ ret = pcim_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ pci_set_master(pdev);
+
+ lpss = devm_kzalloc(&pdev->dev, sizeof(*lpss), GFP_KERNEL);
+ if (!lpss)
+ return -ENOMEM;
+
+ lpss->board = (struct lpss8250_board *)id->driver_data;
+
+ memset(&uart, 0, sizeof(struct uart_8250_port));
+
+ uart.port.dev = &pdev->dev;
+ uart.port.irq = pdev->irq;
+ uart.port.private_data = lpss;
+ uart.port.type = PORT_16550A;
+ uart.port.iotype = UPIO_MEM32;
+ uart.port.regshift = 2;
+ uart.port.uartclk = lpss->board->base_baud * 16;
+ uart.port.flags = UPF_SHARE_IRQ | UPF_FIXED_PORT | UPF_FIXED_TYPE;
+
+ uart.capabilities = UART_CAP_FIFO | UART_CAP_AFE;
+
+ uart.port.mapbase = pci_resource_start(pdev, 0);
+ uart.port.membase = pcim_iomap(pdev, 0, 0);
+ if (!uart.port.membase)
+ return -ENOMEM;
+
+ if (lpss->board->setup) {
+ ret = lpss->board->setup(lpss, &uart.port);
+ if (ret)
+ return ret;
+ }
+
+ ret = lpss8250_dma_setup(lpss, &uart);
+ if (ret)
+ return ret;
+
+ ret = serial8250_register_8250_port(&uart);
+ if (ret < 0)
+ return ret;
+
+ lpss->line = ret;
+
+ pci_set_drvdata(pdev, lpss);
+ return 0;
+}
+
+static void lpss8250_remove(struct pci_dev *pdev)
+{
+ struct lpss8250 *lpss = pci_get_drvdata(pdev);
+
+ serial8250_unregister_port(lpss->line);
+}
+
+static const struct lpss8250_board byt_board = {
+ .freq = 100000000,
+ .base_baud = 2764800,
+ .setup = byt_serial_setup,
+};
+
+#define LPSS_DEVICE(id, board) { PCI_VDEVICE(INTEL, id), (kernel_ulong_t)&board }
+
+static const struct pci_device_id pci_ids[] = {
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BYT_UART1, byt_board),
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BYT_UART2, byt_board),
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BSW_UART1, byt_board),
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BSW_UART2, byt_board),
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BDW_UART1, byt_board),
+ LPSS_DEVICE(PCI_DEVICE_ID_INTEL_BDW_UART2, byt_board),
+ { },
+};
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+static struct pci_driver lpss8250_pci_driver = {
+ .name = "8250_lpss",
+ .id_table = pci_ids,
+ .probe = lpss8250_probe,
+ .remove = lpss8250_remove,
+};
+
+module_pci_driver(lpss8250_pci_driver);
+
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Intel LPSS UART driver");
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 5eea74d..bb4df5d 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -21,14 +21,10 @@
#include <linux/serial_core.h>
#include <linux/8250_pci.h>
#include <linux/bitops.h>
-#include <linux/rational.h>
#include <asm/byteorder.h>
#include <asm/io.h>
-#include <linux/dmaengine.h>
-#include <linux/platform_data/dma-dw.h>
-
#include "8250.h"
/*
@@ -1349,145 +1345,6 @@ ce4100_serial_setup(struct serial_private *priv,
return ret;
}
-#define PCI_DEVICE_ID_INTEL_BYT_UART1 0x0f0a
-#define PCI_DEVICE_ID_INTEL_BYT_UART2 0x0f0c
-
-#define PCI_DEVICE_ID_INTEL_BSW_UART1 0x228a
-#define PCI_DEVICE_ID_INTEL_BSW_UART2 0x228c
-
-#define PCI_DEVICE_ID_INTEL_BDW_UART1 0x9ce3
-#define PCI_DEVICE_ID_INTEL_BDW_UART2 0x9ce4
-
-#define BYT_PRV_CLK 0x800
-#define BYT_PRV_CLK_EN (1 << 0)
-#define BYT_PRV_CLK_M_VAL_SHIFT 1
-#define BYT_PRV_CLK_N_VAL_SHIFT 16
-#define BYT_PRV_CLK_UPDATE (1 << 31)
-
-#define BYT_TX_OVF_INT 0x820
-#define BYT_TX_OVF_INT_MASK (1 << 1)
-
-static void
-byt_set_termios(struct uart_port *p, struct ktermios *termios,
- struct ktermios *old)
-{
- unsigned int baud = tty_termios_baud_rate(termios);
- unsigned long fref = 100000000, fuart = baud * 16;
- unsigned long w = BIT(15) - 1;
- unsigned long m, n;
- u32 reg;
-
- /* Get Fuart closer to Fref */
- fuart *= rounddown_pow_of_two(fref / fuart);
-
- /*
- * For baud rates 0.5M, 1M, 1.5M, 2M, 2.5M, 3M, 3.5M and 4M the
- * dividers must be adjusted.
- *
- * uartclk = (m / n) * 100 MHz, where m <= n
- */
- rational_best_approximation(fuart, fref, w, w, &m, &n);
- p->uartclk = fuart;
-
- /* Reset the clock */
- reg = (m << BYT_PRV_CLK_M_VAL_SHIFT) | (n << BYT_PRV_CLK_N_VAL_SHIFT);
- writel(reg, p->membase + BYT_PRV_CLK);
- reg |= BYT_PRV_CLK_EN | BYT_PRV_CLK_UPDATE;
- writel(reg, p->membase + BYT_PRV_CLK);
-
- p->status &= ~UPSTAT_AUTOCTS;
- if (termios->c_cflag & CRTSCTS)
- p->status |= UPSTAT_AUTOCTS;
-
- serial8250_do_set_termios(p, termios, old);
-}
-
-static bool byt_dma_filter(struct dma_chan *chan, void *param)
-{
- struct dw_dma_slave *dws = param;
-
- if (dws->dma_dev != chan->device->dev)
- return false;
-
- chan->private = dws;
- return true;
-}
-
-static int
-byt_serial_setup(struct serial_private *priv,
- const struct pciserial_board *board,
- struct uart_8250_port *port, int idx)
-{
- struct pci_dev *pdev = priv->dev;
- struct device *dev = port->port.dev;
- struct uart_8250_dma *dma;
- struct dw_dma_slave *tx_param, *rx_param;
- struct pci_dev *dma_dev;
- int ret;
-
- dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
- if (!dma)
- return -ENOMEM;
-
- tx_param = devm_kzalloc(dev, sizeof(*tx_param), GFP_KERNEL);
- if (!tx_param)
- return -ENOMEM;
-
- rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL);
- if (!rx_param)
- return -ENOMEM;
-
- switch (pdev->device) {
- case PCI_DEVICE_ID_INTEL_BYT_UART1:
- case PCI_DEVICE_ID_INTEL_BSW_UART1:
- case PCI_DEVICE_ID_INTEL_BDW_UART1:
- rx_param->src_id = 3;
- tx_param->dst_id = 2;
- break;
- case PCI_DEVICE_ID_INTEL_BYT_UART2:
- case PCI_DEVICE_ID_INTEL_BSW_UART2:
- case PCI_DEVICE_ID_INTEL_BDW_UART2:
- rx_param->src_id = 5;
- tx_param->dst_id = 4;
- break;
- default:
- return -EINVAL;
- }
-
- rx_param->m_master = 0;
- rx_param->p_master = 1;
-
- dma->rxconf.src_maxburst = 16;
-
- tx_param->m_master = 0;
- tx_param->p_master = 1;
-
- dma->txconf.dst_maxburst = 16;
-
- dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
- rx_param->dma_dev = &dma_dev->dev;
- tx_param->dma_dev = &dma_dev->dev;
-
- dma->fn = byt_dma_filter;
- dma->rx_param = rx_param;
- dma->tx_param = tx_param;
-
- ret = pci_default_setup(priv, board, port, idx);
- port->port.iotype = UPIO_MEM;
- port->port.type = PORT_16550A;
- port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
- port->port.set_termios = byt_set_termios;
- port->port.fifosize = 64;
- port->tx_loadsz = 64;
- port->dma = dma;
- port->capabilities = UART_CAP_FIFO | UART_CAP_AFE;
-
- /* Disable Tx counter interrupts */
- writel(BYT_TX_OVF_INT_MASK, port->port.membase + BYT_TX_OVF_INT);
-
- return ret;
-}
-
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -2015,48 +1872,6 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = kt_serial_setup,
},
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_UART1,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BYT_UART2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BSW_UART1,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BSW_UART2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BDW_UART1,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_BDW_UART2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = byt_serial_setup,
- },
/*
* ITE
*/
@@ -2921,7 +2736,6 @@ enum pci_board_num_t {
pbn_ADDIDATA_PCIe_4_3906250,
pbn_ADDIDATA_PCIe_8_3906250,
pbn_ce4100_1_115200,
- pbn_byt,
pbn_qrk,
pbn_omegapci,
pbn_NETMOS9900_2s_115200,
@@ -3698,12 +3512,6 @@ static struct pciserial_board pci_boards[] = {
.base_baud = 921600,
.reg_shift = 2,
},
- [pbn_byt] = {
- .flags = FL_BASE0,
- .num_ports = 1,
- .base_baud = 2764800,
- .reg_shift = 2,
- },
[pbn_qrk] = {
.flags = FL_BASE0,
.num_ports = 1,
@@ -3820,6 +3628,14 @@ static const struct pci_device_id blacklist[] = {
{ PCI_VDEVICE(INTEL, 0x081d), },
{ PCI_VDEVICE(INTEL, 0x1191), },
{ PCI_VDEVICE(INTEL, 0x19d8), },
+
+ /* Intel platforms with DesignWare UART */
+ { PCI_VDEVICE(INTEL, 0x0f0a), },
+ { PCI_VDEVICE(INTEL, 0x0f0c), },
+ { PCI_VDEVICE(INTEL, 0x228a), },
+ { PCI_VDEVICE(INTEL, 0x228c), },
+ { PCI_VDEVICE(INTEL, 0x9ce3), },
+ { PCI_VDEVICE(INTEL, 0x9ce4), },
};
/*
@@ -5485,33 +5301,6 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_ce4100_1_115200 },
- /* Intel BayTrail */
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_UART1,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_UART2,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART1,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART2,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
-
- /* Intel Broadwell */
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART1,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_UART2,
- PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
- pbn_byt },
/*
* Intel Quark x1000
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index 64742a0..6fde7d2 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -108,7 +108,6 @@ config SERIAL_8250_PCI
tristate "8250/16550 PCI device support" if EXPERT
depends on SERIAL_8250 && PCI
default SERIAL_8250
- select RATIONAL
help
This builds standard PCI serial support. You may be able to
disable this feature if you only need legacy serial support.
@@ -398,6 +397,19 @@ config SERIAL_8250_INGENIC
If you have a system using an Ingenic SoC and wish to make use of
its UARTs, say Y to this option. If unsure, say N.
+config SERIAL_8250_LPSS
+ tristate "Support for serial ports on Intel LPSS platforms" if EXPERT
+ default SERIAL_8250
+ depends on SERIAL_8250 && PCI
+ depends on X86 || COMPILE_TEST
+ select DW_DMAC_CORE if SERIAL_8250_DMA
+ select DW_DMAC_PCI if X86_INTEL_LPSS
+ select RATIONAL
+ help
+ Selecting this option will enable handling of the extra features
+ present on the UART found on Intel Braswell SoC and various other
+ Intel platforms.
+
config SERIAL_8250_MID
tristate "Support for serial ports on Intel MID platforms"
depends on SERIAL_8250 && PCI
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index c9a2d6e..ca37d1c 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_SERIAL_8250_LPC18XX) += 8250_lpc18xx.o
obj-$(CONFIG_SERIAL_8250_MT6577) += 8250_mtk.o
obj-$(CONFIG_SERIAL_8250_UNIPHIER) += 8250_uniphier.o
obj-$(CONFIG_SERIAL_8250_INGENIC) += 8250_ingenic.o
+obj-$(CONFIG_SERIAL_8250_LPSS) += 8250_lpss.o
obj-$(CONFIG_SERIAL_8250_MID) += 8250_mid.o
obj-$(CONFIG_SERIAL_8250_MOXA) += 8250_moxa.o
obj-$(CONFIG_SERIAL_OF_PLATFORM) += 8250_of.o
--
2.8.0.rc3
--
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