#include <config.h>
#include <common.h>
-#include <spi.h>
#include <asm/errno.h>
#include <linux/types.h>
#include <fsl_pmic.h>
+static int check_param(u32 reg, u32 write)
+{
+ if (reg > 63 || write > 1) {
+ printf("<reg num> = %d is invalid. Should be less then 63\n",
+ reg);
+ return -1;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_FSL_PMIC_I2C
+#include <i2c.h>
+
+u32 pmic_reg(u32 reg, u32 val, u32 write)
+{
+ unsigned char buf[4] = { 0 };
+ u32 ret_val = 0;
+
+ if (check_param(reg, write))
+ return -1;
+
+ if (write) {
+ buf[0] = (val >> 16) & 0xff;
+ buf[1] = (val >> 8) & 0xff;
+ buf[2] = (val) & 0xff;
+ if (i2c_write(CONFIG_SYS_FSL_PMIC_I2C_ADDR, reg, 1, buf, 3))
+ return -1;
+ } else {
+ if (i2c_read(CONFIG_SYS_FSL_PMIC_I2C_ADDR, reg, 1, buf, 3))
+ return -1;
+ ret_val = buf[0] << 16 | buf[1] << 8 | buf[2];
+ }
+
+ return ret_val;
+}
+#else /* SPI interface */
+#include <spi.h>
static struct spi_slave *slave;
struct spi_slave *pmic_spi_probe(void)
u32 pmic_reg(u32 reg, u32 val, u32 write)
{
u32 pmic_tx, pmic_rx;
+ u32 tmp;
if (!slave) {
slave = pmic_spi_probe();
return -1;
}
- if (reg > 63 || write > 1) {
- printf("<reg num> = %d is invalid. Should be less then 63\n",
- reg);
+ if (check_param(reg, write))
return -1;
- }
if (spi_claim_bus(slave))
return -1;
pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF);
- if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx,
+ tmp = cpu_to_be32(pmic_tx);
+
+ if (spi_xfer(slave, 4 << 3, &tmp, &pmic_rx,
SPI_XFER_BEGIN | SPI_XFER_END)) {
spi_release_bus(slave);
return -1;
if (write) {
pmic_tx &= ~(1 << 31);
- if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx,
+ tmp = cpu_to_be32(pmic_tx);
+ if (spi_xfer(slave, 4 << 3, &tmp, &pmic_rx,
SPI_XFER_BEGIN | SPI_XFER_END)) {
spi_release_bus(slave);
return -1;
}
spi_release_bus(slave);
- return pmic_rx;
+ return cpu_to_be32(pmic_rx);
}
+#endif
void pmic_reg_write(u32 reg, u32 value)
{
puts("\n");
}
-int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *cmd;
int nregs;
u32 val;
/* at least two arguments please */
- if (argc < 2) {
- cmd_usage(cmdtp);
- return 1;
- }
+ if (argc < 2)
+ return cmd_usage(cmdtp);
cmd = argv[1];
if (strcmp(cmd, "dump") == 0) {
- if (argc < 3) {
- cmd_usage(cmdtp);
- return 1;
- }
+ if (argc < 3)
+ return cmd_usage(cmdtp);
+
nregs = simple_strtoul(argv[2], NULL, 16);
pmic_dump(nregs);
return 0;
}
if (strcmp(cmd, "write") == 0) {
- if (argc < 4) {
- cmd_usage(cmdtp);
- return 1;
- }
+ if (argc < 4)
+ return cmd_usage(cmdtp);
+
nregs = simple_strtoul(argv[2], NULL, 16);
val = simple_strtoul(argv[3], NULL, 16);
pmic_reg_write(nregs, val);
U_BOOT_CMD(
pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
"Freescale PMIC (Atlas)",
- "dump [numregs] dump registers\n"
+ "dump [numregs] - dump registers\n"
"pmic write <reg> <value> - write register"
);