misc: pmic: addI2C support to pmic_fsl driver

Signed-off-by: Stefano Babic <sbabic@denx.de>

2 files changed, 66 insertions, 200 deletions

diff --git a/drivers/misc/fsl_pmic.c b/drivers/misc/fsl_pmic.c
deleted file mode 100644
index 87f0aedeb6..0000000000
--- a/drivers/misc/fsl_pmic.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <config.h>
-#include <common.h>
-#include <spi.h>
-#include <asm/errno.h>
-#include <linux/types.h>
-#include <fsl_pmic.h>
-
-static struct spi_slave *slave;
-
-struct spi_slave *pmic_spi_probe(void)
-{
-	return spi_setup_slave(CONFIG_FSL_PMIC_BUS,
-		CONFIG_FSL_PMIC_CS,
-		CONFIG_FSL_PMIC_CLK,
-		CONFIG_FSL_PMIC_MODE);
-}
-
-void pmic_spi_free(struct spi_slave *slave)
-{
-	if (slave)
-		spi_free_slave(slave);
-}
-
-u32 pmic_reg(u32 reg, u32 val, u32 write)
-{
-	u32 pmic_tx, pmic_rx;
-
-	if (!slave) {
-		slave = pmic_spi_probe();
-
-		if (!slave)
-			return -1;
-	}
-
-	if (reg > 63 || write > 1) {
-		printf("<reg num> = %d is invalid. Should be less then 63\n",
-			reg);
-		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,
-			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,
-			SPI_XFER_BEGIN | SPI_XFER_END)) {
-			spi_release_bus(slave);
-			return -1;
-		}
-	}
-
-	spi_release_bus(slave);
-	return pmic_rx;
-}
-
-void pmic_reg_write(u32 reg, u32 value)
-{
-	pmic_reg(reg, value, 1);
-}
-
-u32 pmic_reg_read(u32 reg)
-{
-	return pmic_reg(reg, 0, 0);
-}
-
-void pmic_show_pmic_info(void)
-{
-	u32 rev_id;
-
-	rev_id = pmic_reg_read(REG_IDENTIFICATION);
-	printf("PMIC ID: 0x%08x [Rev: ", rev_id);
-	switch (rev_id & 0x1F) {
-	case 0x1:
-		puts("1.0");
-		break;
-	case 0x9:
-		puts("1.1");
-		break;
-	case 0xA:
-		puts("1.2");
-		break;
-	case 0x10:
-		puts("2.0");
-		break;
-	case 0x11:
-		puts("2.1");
-		break;
-	case 0x18:
-		puts("3.0");
-		break;
-	case 0x19:
-		puts("3.1");
-		break;
-	case 0x1A:
-		puts("3.2");
-		break;
-	case 0x2:
-		puts("3.2A");
-		break;
-	case 0x1B:
-		puts("3.3");
-		break;
-	case 0x1D:
-		puts("3.5");
-		break;
-	default:
-		puts("unknown");
-		break;
-	}
-	puts("]\n");
-}
-
-static void pmic_dump(int numregs)
-{
-	u32 val;
-	int i;
-
-	pmic_show_pmic_info();
-	for (i = 0; i < numregs; i++) {
-		val = pmic_reg_read(i);
-		if (!(i % 8))
-			printf ("\n0x%02x: ", i);
-		printf("%08x ", val);
-	}
-	puts("\n");
-}
-
-int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
-	char *cmd;
-	int nregs;
-	u32 val;
-
-	/* at least two arguments please */
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
-
-	cmd = argv[1];
-	if (strcmp(cmd, "dump") == 0) {
-		if (argc < 3) {
-			cmd_usage(cmdtp);
-			return 1;
-		}
-		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;
-		}
-		nregs = simple_strtoul(argv[2], NULL, 16);
-		val = simple_strtoul(argv[3], NULL, 16);
-		pmic_reg_write(nregs, val);
-		return 0;
-	}
-	/* No subcommand found */
-	return 1;
-}
-
-U_BOOT_CMD(
-	pmic,	CONFIG_SYS_MAXARGS, 1, do_pmic,
-	"Freescale PMIC (Atlas)",
-	"dump [numregs] dump registers\n"
-	"pmic write <reg> <value> - write register"
-);
diff --git a/drivers/misc/pmic_fsl.c b/drivers/misc/pmic_fsl.c
new file mode 100644
index 0000000000..b6e809a188
--- /dev/null
+++ b/drivers/misc/pmic_fsl.c
@@ -0,0 +1,66 @@
+/*
+ *  Copyright (C) 2011 Samsung Electronics
+ *  Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <spi.h>
+#include <pmic.h>
+#include <fsl_pmic.h>
+
+#if defined(CONFIG_PMIC_SPI)
+static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
+{
+	if ((val == NULL) && (write))
+		return *val & ~(1 << 31);
+	else
+		return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
+}
+#endif
+
+int pmic_init(void)
+{
+	struct pmic *p = get_pmic();
+	static const char name[] = "FSL_PMIC";
+
+	p->name = name;
+	p->number_of_regs = PMIC_NUM_OF_REGS;
+
+#if defined(CONFIG_PMIC_SPI)
+	p->interface = PMIC_SPI;
+	p->bus = CONFIG_FSL_PMIC_BUS;
+	p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
+	p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
+	p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
+	p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
+	p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
+	p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
+#elif defined(CONFIG_PMIC_I2C)
+	p->interface = PMIC_I2C;
+	p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
+	p->hw.i2c.tx_num = 3;
+	p->bus = I2C_PMIC;
+#else
+#error "You must select CONFIG_PMIC_SPI or CONFIG_PMIC_I2C"
+#endif
+
+	return 0;
+}