*/
#include <linux/acpi.h>
+#include <linux/pci.h>
+#include <linux/gpio.h>
+#include <asm/olpc.h>
+
+/* TODO: this eventually belongs in linux/vx855.h */
+#define NR_VX855_GPI 14
+#define NR_VX855_GPO 13
+#define NR_VX855_GPIO 15
+
+#define VX855_GPI(n) (n)
+#define VX855_GPO(n) (NR_VX855_GPI + (n))
+#define VX855_GPIO(n) (NR_VX855_GPI + NR_VX855_GPO + (n))
+
+#include "olpc_dcon.h"
/* Hardware setup on the XO 1.5:
* DCONLOAD connects to
- * VX855_GPO12 (not nCR_PWOFF) (rev A)
- * VX855_GPIO1 (not SMBCK2) (rev B)
+ * VX855_GPIO1 (not SMBCK2)
* DCONBLANK connects to VX855_GPIO8 (not SSPICLK) unused in driver
* DCONSTAT0 connects to VX855_GPI10 (not SSPISDI)
* DCONSTAT1 connects to VX855_GPI11 (not nSSPISS)
- * DCONIRQ connects to VX855_GPIO12 (on B3. on B2, it goes to
- * SMBALRT, which doesn't work.)
+ * DCONIRQ connects to VX855_GPIO12
* DCONSMBDATA connects to VX855 graphics CRTSPD
* DCONSMBCLK connects to VX855 graphics CRTSPCLK
*/
-#define TEST_B2 0 // define to test B3 paths on a modded B2 board
-
#define VX855_GENL_PURPOSE_OUTPUT 0x44c // PMIO_Rx4c-4f
#define VX855_GPI_STATUS_CHG 0x450 // PMIO_Rx50
#define VX855_GPI_SCI_SMI 0x452 // PMIO_Rx52
#define PREFIX "OLPC DCON:"
-/*
- there is no support here for DCONIRQ on 1.5 boards earlier than
- B3. the issue is that the DCONIRQ signal on earlier boards is
- routed to SMBALRT, which turns out to to be a level sensitive
- interrupt. the DCONIRQ signal is far too short (11usec) to
- be detected reliably in that case. including support for
- DCONIRQ functions no better than none at all.
-*/
-
-static struct dcon_platform_data dcon_pdata_xo_1_5;
-
static void dcon_clear_irq(void)
{
- if (TEST_B2 || olpc_board_at_least(olpc_board(BOARD_XO_1_5_B3))) {
- // irq status will appear in PMIO_Rx50[6] (RW1C) on gpio12
- outb(BIT_GPIO12, VX855_GPI_STATUS_CHG);
- }
+ /* irq status will appear in PMIO_Rx50[6] (RW1C) on gpio12 */
+ outb(BIT_GPIO12, VX855_GPI_STATUS_CHG);
}
static int dcon_was_irq(void)
{
u_int8_t tmp;
- if (TEST_B2 || olpc_board_at_least(olpc_board(BOARD_XO_1_5_B3))) {
- // irq status will appear in PMIO_Rx50[6] on gpio12
- tmp = inb(VX855_GPI_STATUS_CHG);
- return !!(tmp & BIT_GPIO12);
- }
+ /* irq status will appear in PMIO_Rx50[6] on gpio12 */
+ tmp = inb(VX855_GPI_STATUS_CHG);
+ return !!(tmp & BIT_GPIO12);
return 0;
}
-static int dcon_init_xo_1_5(void)
+static int dcon_init_xo_1_5(struct dcon_priv *dcon)
{
unsigned int irq;
u_int8_t tmp;
return 1;
}
- if (olpc_board_at_least(olpc_board(BOARD_XO_1_5_B1))) {
- pci_read_config_byte(pdev, 0x95, &tmp);
- pci_write_config_byte(pdev, 0x95, tmp|0x0c);
- } else {
- /* Set GPO12 to GPO mode, not nCR_PWOFF */
- pci_read_config_byte(pdev, 0x9b, &tmp);
- pci_write_config_byte(pdev, 0x9b, tmp|0x01);
- }
+ pci_read_config_byte(pdev, 0x95, &tmp);
+ pci_write_config_byte(pdev, 0x95, tmp|0x0c);
/* Set GPIO8 to GPIO mode, not SSPICLK */
pci_read_config_byte(pdev, 0xe3, &tmp);
pci_read_config_byte(pdev, 0xe4, &tmp);
pci_write_config_byte(pdev, 0xe4, tmp|0x08);
- if (TEST_B2 || olpc_board_at_least(olpc_board(BOARD_XO_1_5_B3))) {
- // clear PMU_RxE1[6] to select SCI on GPIO12
- // clear PMU_RxE0[6] to choose falling edge
- pci_read_config_byte(pdev, 0xe1, &tmp);
- pci_write_config_byte(pdev, 0xe1, tmp & ~BIT_GPIO12);
- pci_read_config_byte(pdev, 0xe0, &tmp);
- pci_write_config_byte(pdev, 0xe0, tmp & ~BIT_GPIO12);
+ /* clear PMU_RxE1[6] to select SCI on GPIO12 */
+ /* clear PMU_RxE0[6] to choose falling edge */
+ pci_read_config_byte(pdev, 0xe1, &tmp);
+ pci_write_config_byte(pdev, 0xe1, tmp & ~BIT_GPIO12);
+ pci_read_config_byte(pdev, 0xe0, &tmp);
+ pci_write_config_byte(pdev, 0xe0, tmp & ~BIT_GPIO12);
- dcon_clear_irq();
+ dcon_clear_irq();
- // set PMIO_Rx52[6] to enable SCI/SMI on gpio12
- outb(inb(VX855_GPI_SCI_SMI)|BIT_GPIO12, VX855_GPI_SCI_SMI);
-
- }
+ /* set PMIO_Rx52[6] to enable SCI/SMI on gpio12 */
+ outb(inb(VX855_GPI_SCI_SMI)|BIT_GPIO12, VX855_GPI_SCI_SMI);
/* Determine the current state of DCONLOAD, likely set by firmware */
- if (olpc_board_at_least(olpc_board(BOARD_XO_1_5_B1))) {
- // GPIO1
- dcon_source = (inl(VX855_GENL_PURPOSE_OUTPUT) & 0x1000) ?
- DCON_SOURCE_CPU : DCON_SOURCE_DCON;
- } else {
- // GPO12
- dcon_source = (inl(VX855_GENL_PURPOSE_OUTPUT) & 0x04000000) ?
+ /* GPIO1 */
+ dcon->curr_src = (inl(VX855_GENL_PURPOSE_OUTPUT) & 0x1000) ?
DCON_SOURCE_CPU : DCON_SOURCE_DCON;
- }
- dcon_pending = dcon_source;
+ dcon->pending_src = dcon->curr_src;
pci_dev_put(pdev);
/* we're sharing the IRQ with ACPI */
irq = acpi_gbl_FADT.sci_interrupt;
- if (request_irq(irq, &dcon_interrupt, IRQF_SHARED, "DCON", &dcon_driver)) {
+ if (request_irq(irq, &dcon_interrupt, IRQF_SHARED, "DCON", dcon)) {
printk(KERN_ERR PREFIX "DCON (IRQ%d) allocation failed\n", irq);
return 1;
}
-
return 0;
}
}
udelay(5);
- if (TEST_B2 || olpc_board_at_least(olpc_board(BOARD_XO_1_5_B3))) {
- // set PMIO_Rx52[6] to enable SCI/SMI on gpio12
- outb(inb(VX855_GPI_SCI_SMI)|BIT_GPIO12, VX855_GPI_SCI_SMI);
- }
+ /* set PMIO_Rx52[6] to enable SCI/SMI on gpio12 */
+ outb(inb(VX855_GPI_SCI_SMI)|BIT_GPIO12, VX855_GPI_SCI_SMI);
}
static void dcon_set_dconload_xo_1_5(int val)
{
- if (olpc_board_at_least(olpc_board(BOARD_XO_1_5_B1))) {
- gpio_set_value(VX855_GPIO(1), val);
- } else {
- gpio_set_value(VX855_GPO(12), val);
- }
+ gpio_set_value(VX855_GPIO(1), val);
}
static u8 dcon_read_status_xo_1_5(void)
return status;
}
-static struct dcon_platform_data dcon_pdata_xo_1_5 = {
+struct dcon_platform_data dcon_pdata_xo_1_5 = {
.init = dcon_init_xo_1_5,
.bus_stabilize_wiggle = dcon_wiggle_xo_1_5,
.set_dconload = dcon_set_dconload_xo_1_5,
git.openpandora.org / pandora-kernel.git / blobdiff