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path: root/drivers/tty/serial/8250/8250_pci.c
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Diffstat (limited to 'drivers/tty/serial/8250/8250_pci.c')
-rw-r--r--drivers/tty/serial/8250/8250_pci.c229
1 files changed, 7 insertions, 222 deletions
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 68042dd1c..4097f3f65 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -28,7 +28,6 @@
#include <linux/dmaengine.h>
#include <linux/platform_data/dma-dw.h>
-#include <linux/platform_data/dma-hsu.h>
#include "8250.h"
@@ -1508,167 +1507,6 @@ byt_serial_setup(struct serial_private *priv,
return ret;
}
-#define INTEL_MID_UART_PS 0x30
-#define INTEL_MID_UART_MUL 0x34
-#define INTEL_MID_UART_DIV 0x38
-
-static void intel_mid_set_termios(struct uart_port *p,
- struct ktermios *termios,
- struct ktermios *old,
- unsigned long fref)
-{
- unsigned int baud = tty_termios_baud_rate(termios);
- unsigned short ps = 16;
- unsigned long fuart = baud * ps;
- unsigned long w = BIT(24) - 1;
- unsigned long mul, div;
-
- if (fref < fuart) {
- /* Find prescaler value that satisfies Fuart < Fref */
- if (fref > baud)
- ps = fref / baud; /* baud rate too high */
- else
- ps = 1; /* PLL case */
- fuart = baud * ps;
- } else {
- /* Get Fuart closer to Fref */
- fuart *= rounddown_pow_of_two(fref / fuart);
- }
-
- rational_best_approximation(fuart, fref, w, w, &mul, &div);
- p->uartclk = fuart * 16 / ps; /* core uses ps = 16 always */
-
- writel(ps, p->membase + INTEL_MID_UART_PS); /* set PS */
- writel(mul, p->membase + INTEL_MID_UART_MUL); /* set MUL */
- writel(div, p->membase + INTEL_MID_UART_DIV);
-
- serial8250_do_set_termios(p, termios, old);
-}
-
-static void intel_mid_set_termios_38_4M(struct uart_port *p,
- struct ktermios *termios,
- struct ktermios *old)
-{
- intel_mid_set_termios(p, termios, old, 38400000);
-}
-
-static void intel_mid_set_termios_50M(struct uart_port *p,
- struct ktermios *termios,
- struct ktermios *old)
-{
- /*
- * The uart clk is 50Mhz, and the baud rate come from:
- * baud = 50M * MUL / (DIV * PS * DLAB)
- */
- intel_mid_set_termios(p, termios, old, 50000000);
-}
-
-static bool intel_mid_dma_filter(struct dma_chan *chan, void *param)
-{
- struct hsu_dma_slave *s = param;
-
- if (s->dma_dev != chan->device->dev || s->chan_id != chan->chan_id)
- return false;
-
- chan->private = s;
- return true;
-}
-
-static int intel_mid_serial_setup(struct serial_private *priv,
- const struct pciserial_board *board,
- struct uart_8250_port *port, int idx,
- int index, struct pci_dev *dma_dev)
-{
- struct device *dev = port->port.dev;
- struct uart_8250_dma *dma;
- struct hsu_dma_slave *tx_param, *rx_param;
-
- 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;
-
- rx_param->chan_id = index * 2 + 1;
- tx_param->chan_id = index * 2;
-
- dma->rxconf.src_maxburst = 64;
- dma->txconf.dst_maxburst = 64;
-
- rx_param->dma_dev = &dma_dev->dev;
- tx_param->dma_dev = &dma_dev->dev;
-
- dma->fn = intel_mid_dma_filter;
- dma->rx_param = rx_param;
- dma->tx_param = tx_param;
-
- port->port.type = PORT_16750;
- port->port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE;
- port->dma = dma;
-
- return pci_default_setup(priv, board, port, idx);
-}
-
-#define PCI_DEVICE_ID_INTEL_PNW_UART1 0x081b
-#define PCI_DEVICE_ID_INTEL_PNW_UART2 0x081c
-#define PCI_DEVICE_ID_INTEL_PNW_UART3 0x081d
-
-static int pnw_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 pci_dev *dma_dev;
- int index;
-
- switch (pdev->device) {
- case PCI_DEVICE_ID_INTEL_PNW_UART1:
- index = 0;
- break;
- case PCI_DEVICE_ID_INTEL_PNW_UART2:
- index = 1;
- break;
- case PCI_DEVICE_ID_INTEL_PNW_UART3:
- index = 2;
- break;
- default:
- return -EINVAL;
- }
-
- dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 3));
-
- port->port.set_termios = intel_mid_set_termios_50M;
-
- return intel_mid_serial_setup(priv, board, port, idx, index, dma_dev);
-}
-
-#define PCI_DEVICE_ID_INTEL_TNG_UART 0x1191
-
-static int tng_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 pci_dev *dma_dev;
- int index = PCI_FUNC(pdev->devfn);
-
- /* Currently no support for HSU port0 */
- if (index-- == 0)
- return -ENODEV;
-
- dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(5, 0));
-
- port->port.set_termios = intel_mid_set_termios_38_4M;
-
- return intel_mid_serial_setup(priv, board, port, idx, index, dma_dev);
-}
-
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -2212,34 +2050,6 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
},
{
.vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_PNW_UART1,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = pnw_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_PNW_UART2,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = pnw_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_PNW_UART3,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = pnw_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
- .device = PCI_DEVICE_ID_INTEL_TNG_UART,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .setup = tng_serial_setup,
- },
- {
- .vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_BSW_UART1,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
@@ -3119,8 +2929,6 @@ enum pci_board_num_t {
pbn_ADDIDATA_PCIe_8_3906250,
pbn_ce4100_1_115200,
pbn_byt,
- pbn_pnw,
- pbn_tng,
pbn_qrk,
pbn_omegapci,
pbn_NETMOS9900_2s_115200,
@@ -3907,16 +3715,6 @@ static struct pciserial_board pci_boards[] = {
.uart_offset = 0x80,
.reg_shift = 2,
},
- [pbn_pnw] = {
- .flags = FL_BASE0,
- .num_ports = 1,
- .base_baud = 115200,
- },
- [pbn_tng] = {
- .flags = FL_BASE0,
- .num_ports = 1,
- .base_baud = 1843200,
- },
[pbn_qrk] = {
.flags = FL_BASE0,
.num_ports = 1,
@@ -4005,6 +3803,13 @@ static const struct pci_device_id blacklist[] = {
{ PCI_DEVICE(0x4348, 0x5053), }, /* WCH CH353 1S1P */
{ PCI_DEVICE(0x1c00, 0x3250), }, /* WCH CH382 2S1P */
{ PCI_DEVICE(0x1c00, 0x3470), }, /* WCH CH384 4S */
+
+ /* Intel platforms with MID UART */
+ { PCI_VDEVICE(INTEL, 0x081b), },
+ { PCI_VDEVICE(INTEL, 0x081c), },
+ { PCI_VDEVICE(INTEL, 0x081d), },
+ { PCI_VDEVICE(INTEL, 0x1191), },
+ { PCI_VDEVICE(INTEL, 0x19d8), },
};
/*
@@ -5702,26 +5507,6 @@ static struct pci_device_id serial_pci_tbl[] = {
pbn_byt },
/*
- * Intel Penwell
- */
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PNW_UART1,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_pnw},
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PNW_UART2,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_pnw},
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PNW_UART3,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_pnw},
-
- /*
- * Intel Tangier
- */
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TNG_UART,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_tng},
-
- /*
* Intel Quark x1000
*/
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QRK_UART,
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 19:26:34 +0000