Release 4.13 arch/arm/plat-orion/mpp.c
/*
* arch/arm/plat-orion/mpp.c
*
* MPP functions for Marvell orion SoCs
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mbus.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <plat/orion-gpio.h>
#include <plat/mpp.h>
/* Address of the ith MPP control register */
static __init void __iomem *mpp_ctrl_addr(unsigned int i,
void __iomem *dev_bus)
{
return dev_bus + (i) * 4;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Lunn | 21 | 77.78% | 1 | 50.00% |
| Thomas Petazzoni | 6 | 22.22% | 1 | 50.00% |
| Total | 27 | 100.00% | 2 | 100.00% |
void __init orion_mpp_conf(unsigned int *mpp_list, unsigned int variant_mask,
unsigned int mpp_max, void __iomem *dev_bus)
{
unsigned int mpp_nr_regs = (1 + mpp_max/8);
u32 mpp_ctrl[mpp_nr_regs];
int i;
printk(KERN_DEBUG "initial MPP regs:");
for (i = 0; i < mpp_nr_regs; i++) {
mpp_ctrl[i] = readl(mpp_ctrl_addr(i, dev_bus));
printk(" %08x", mpp_ctrl[i]);
}
printk("\n");
for ( ; *mpp_list; mpp_list++) {
unsigned int num = MPP_NUM(*mpp_list);
unsigned int sel = MPP_SEL(*mpp_list);
int shift, gpio_mode;
if (num > mpp_max) {
printk(KERN_ERR "orion_mpp_conf: invalid MPP "
"number (%u)\n", num);
continue;
}
if (variant_mask && !(*mpp_list & variant_mask)) {
printk(KERN_WARNING
"orion_mpp_conf: requested MPP%u config "
"unavailable on this hardware\n", num);
continue;
}
shift = (num & 7) << 2;
mpp_ctrl[num / 8] &= ~(0xf << shift);
mpp_ctrl[num / 8] |= sel << shift;
gpio_mode = 0;
if (*mpp_list & MPP_INPUT_MASK)
gpio_mode |= GPIO_INPUT_OK;
if (*mpp_list & MPP_OUTPUT_MASK)
gpio_mode |= GPIO_OUTPUT_OK;
orion_gpio_set_valid(num, gpio_mode);
}
printk(KERN_DEBUG " final MPP regs:");
for (i = 0; i < mpp_nr_regs; i++) {
writel(mpp_ctrl[i], mpp_ctrl_addr(i, dev_bus));
printk(" %08x", mpp_ctrl[i]);
}
printk("\n");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Lunn | 289 | 98.63% | 2 | 50.00% |
| Thomas Petazzoni | 3 | 1.02% | 1 | 25.00% |
| Gerlando Falauto | 1 | 0.34% | 1 | 25.00% |
| Total | 293 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Lunn | 330 | 96.21% | 2 | 40.00% |
| Thomas Petazzoni | 9 | 2.62% | 1 | 20.00% |
| Rob Herring | 3 | 0.87% | 1 | 20.00% |
| Gerlando Falauto | 1 | 0.29% | 1 | 20.00% |
| Total | 343 | 100.00% | 5 | 100.00% |
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