#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/io.h>
-
+#include <plat/mpp.h>
#include <mach/dove.h>
-
#include "mpp.h"
-#define MPP_NR_REGS 4
-#define MPP_CTRL(i) ((i) == 3 ? \
- DOVE_MPP_CTRL4_VIRT_BASE : \
- DOVE_MPP_VIRT_BASE + (i) * 4)
-#define PMU_SIG_REGS 2
-#define PMU_SIG_CTRL(i) (DOVE_PMU_SIG_CTRL + (i) * 4)
-
struct dove_mpp_grp {
int start;
int end;
};
-static struct dove_mpp_grp dove_mpp_grp[] = {
+/* Map a group to a range of GPIO pins in that group */
+static const struct dove_mpp_grp dove_mpp_grp[] = {
[MPP_24_39] = {
.start = 24,
.end = 39,
.end = 45,
},
[MPP_46_51] = {
- .start = 40,
- .end = 45,
+ .start = 46,
+ .end = 51,
},
[MPP_58_61] = {
.start = 58,
},
};
+/* Enable gpio for a range of pins. mode should be a combination of
+ GPIO_OUTPUT_OK | GPIO_INPUT_OK */
static void dove_mpp_gpio_mode(int start, int end, int gpio_mode)
{
int i;
orion_gpio_set_valid(i, gpio_mode);
}
+/* Dump all the extra MPP registers. The platform code will dump the
+ registers for pins 0-23. */
static void dove_mpp_dump_regs(void)
{
-#ifdef DEBUG
- int i;
+ pr_debug("PMU_CTRL4_CTRL: %08x\n",
+ readl(DOVE_MPP_CTRL4_VIRT_BASE));
- pr_debug("MPP_CTRL regs:");
- for (i = 0; i < MPP_NR_REGS; i++)
- printk(" %08x", readl(MPP_CTRL(i)));
- printk("\n");
+ pr_debug("PMU_MPP_GENERAL_CTRL: %08x\n",
+ readl(DOVE_PMU_MPP_GENERAL_CTRL));
- pr_debug("PMU_SIG_CTRL regs:");
- for (i = 0; i < PMU_SIG_REGS; i++)
- printk(" %08x", readl(PMU_SIG_CTRL(i)));
- printk("\n");
-
- pr_debug("PMU_MPP_GENERAL_CTRL: %08x\n", readl(DOVE_PMU_MPP_GENERAL_CTRL));
pr_debug("MPP_GENERAL: %08x\n", readl(DOVE_MPP_GENERAL_VIRT_BASE));
-#endif
}
static void dove_mpp_cfg_nfc(int sel)
static void dove_mpp_cfg_au1(int sel)
{
- u32 mpp_ctrl4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
+ u32 mpp_ctrl4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
u32 ssp_ctrl1 = readl(DOVE_SSP_CTRL_STATUS_1);
u32 mpp_gen_ctrl = readl(DOVE_MPP_GENERAL_VIRT_BASE);
u32 global_cfg_2 = readl(DOVE_GLOBAL_CONFIG_2);
writel(global_cfg_2, DOVE_GLOBAL_CONFIG_2);
}
-static void dove_mpp_conf_grp(int num, int sel, u32 *mpp_ctrl)
-{
- int start = dove_mpp_grp[num].start;
- int end = dove_mpp_grp[num].end;
- int gpio_mode = sel ? GPIO_OUTPUT_OK | GPIO_INPUT_OK : 0;
-
- *mpp_ctrl &= ~(0x1 << num);
- *mpp_ctrl |= sel << num;
-
- dove_mpp_gpio_mode(start, end, gpio_mode);
-}
-
-void __init dove_mpp_conf(unsigned int *mpp_list)
+/* Configure the group registers, enabling GPIO if sel indicates the
+ pin is to be used for GPIO */
+static void dove_mpp_conf_grp(unsigned int *mpp_grp_list)
{
- u32 mpp_ctrl[MPP_NR_REGS];
- u32 pmu_mpp_ctrl = 0;
- u32 pmu_sig_ctrl[PMU_SIG_REGS];
- int i;
-
- for (i = 0; i < MPP_NR_REGS; i++)
- mpp_ctrl[i] = readl(MPP_CTRL(i));
-
- for (i = 0; i < PMU_SIG_REGS; i++)
- pmu_sig_ctrl[i] = readl(PMU_SIG_CTRL(i));
-
- pmu_mpp_ctrl = readl(DOVE_PMU_MPP_GENERAL_CTRL);
+ u32 mpp_ctrl4 = readl(DOVE_MPP_CTRL4_VIRT_BASE);
+ int gpio_mode;
- dove_mpp_dump_regs();
-
- for ( ; *mpp_list != MPP_END; mpp_list++) {
- unsigned int num = MPP_NUM(*mpp_list);
- unsigned int sel = MPP_SEL(*mpp_list);
- int shift, gpio_mode;
-
- if (num > MPP_MAX) {
- pr_err("dove: invalid MPP number (%u)\n", num);
- continue;
- }
-
- if (*mpp_list & MPP_NFC_MASK) {
- dove_mpp_cfg_nfc(sel);
- continue;
- }
+ for ( ; *mpp_grp_list; mpp_grp_list++) {
+ unsigned int num = MPP_NUM(*mpp_grp_list);
+ unsigned int sel = MPP_SEL(*mpp_grp_list);
- if (*mpp_list & MPP_AU1_MASK) {
- dove_mpp_cfg_au1(sel);
+ if (num > MPP_GRP_MAX) {
+ pr_err("dove: invalid MPP GRP number (%u)\n", num);
continue;
}
- if (*mpp_list & MPP_GRP_MASK) {
- dove_mpp_conf_grp(num, sel, &mpp_ctrl[3]);
- continue;
- }
-
- shift = (num & 7) << 2;
- if (*mpp_list & MPP_PMU_MASK) {
- pmu_mpp_ctrl |= (0x1 << num);
- pmu_sig_ctrl[num / 8] &= ~(0xf << shift);
- pmu_sig_ctrl[num / 8] |= 0xf << shift;
- gpio_mode = 0;
- } else {
- mpp_ctrl[num / 8] &= ~(0xf << shift);
- mpp_ctrl[num / 8] |= sel << shift;
- gpio_mode = GPIO_OUTPUT_OK | GPIO_INPUT_OK;
- }
+ mpp_ctrl4 &= ~(0x1 << num);
+ mpp_ctrl4 |= sel << num;
- orion_gpio_set_valid(num, gpio_mode);
+ gpio_mode = sel ? GPIO_OUTPUT_OK | GPIO_INPUT_OK : 0;
+ dove_mpp_gpio_mode(dove_mpp_grp[num].start,
+ dove_mpp_grp[num].end, gpio_mode);
}
+ writel(mpp_ctrl4, DOVE_MPP_CTRL4_VIRT_BASE);
+}
- for (i = 0; i < MPP_NR_REGS; i++)
- writel(mpp_ctrl[i], MPP_CTRL(i));
+/* Configure the various MPP pins on Dove */
+void __init dove_mpp_conf(unsigned int *mpp_list,
+ unsigned int *mpp_grp_list,
+ unsigned int grp_au1_52_57,
+ unsigned int grp_nfc_64_71)
+{
+ dove_mpp_dump_regs();
- for (i = 0; i < PMU_SIG_REGS; i++)
- writel(pmu_sig_ctrl[i], PMU_SIG_CTRL(i));
+ /* Use platform code for pins 0-23 */
+ orion_mpp_conf(mpp_list, 0, MPP_MAX, DOVE_MPP_VIRT_BASE);
- writel(pmu_mpp_ctrl, DOVE_PMU_MPP_GENERAL_CTRL);
+ dove_mpp_conf_grp(mpp_grp_list);
+ dove_mpp_cfg_au1(grp_au1_52_57);
+ dove_mpp_cfg_nfc(grp_nfc_64_71);
dove_mpp_dump_regs();
}
git.openpandora.org / pandora-kernel.git / blobdiff