mtd: mxc_nand: add i.MX53 support

The only relevant change between i.MX51 and i.MX53 is that
a bitfield is shifted one bit to the left.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 48c5727..3f94e1f 100644 (file)
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -43,8 +43,8 @@
 
 #define nfc_is_v21()           (cpu_is_mx25() || cpu_is_mx35())
 #define nfc_is_v1()            (cpu_is_mx31() || cpu_is_mx27() || cpu_is_mx21())
-#define nfc_is_v3_2()          (cpu_is_mx51() || cpu_is_mx53())
-#define nfc_is_v3()            nfc_is_v3_2()
+#define nfc_is_v3_2a()         cpu_is_mx51()
+#define nfc_is_v3_2b()         cpu_is_mx53()
 
 /* Addresses for NFC registers */
 #define NFC_V1_V2_BUF_SIZE             (host->regs + 0x00)
@@ -122,7 +122,7 @@
 #define NFC_V3_CONFIG2_2CMD_PHASES             (1 << 4)
 #define NFC_V3_CONFIG2_NUM_ADDR_PHASE0         (1 << 5)
 #define NFC_V3_CONFIG2_ECC_MODE_8              (1 << 6)
-#define NFC_V3_CONFIG2_PPB(x)                  (((x) & 0x3) << 7)
+#define NFC_V3_CONFIG2_PPB(x, shift)           (((x) & 0x3) << shift)
 #define NFC_V3_CONFIG2_NUM_ADDR_PHASE1(x)      (((x) & 0x3) << 12)
 #define NFC_V3_CONFIG2_INT_MSK                 (1 << 15)
 #define NFC_V3_CONFIG2_ST_CMD(x)               (((x) & 0xff) << 24)
@@ -174,6 +174,7 @@ struct mxc_nand_devtype_data {
        int spare_len;
        int eccbytes;
        int eccsize;
+       int ppb_shift;
 };
 
 struct mxc_nand_host {
@@ -1021,7 +1022,9 @@ static void preset_v3(struct mtd_info *mtd)
        }
 
        if (mtd->writesize) {
-               config2 |= NFC_V3_CONFIG2_PPB(ffs(mtd->erasesize / mtd->writesize) - 6);
+               config2 |= NFC_V3_CONFIG2_PPB(
+                               ffs(mtd->erasesize / mtd->writesize) - 6,
+                               host->devtype_data->ppb_shift);
                host->eccsize = get_eccsize(mtd);
                if (host->eccsize == 8)
                        config2 |= NFC_V3_CONFIG2_ECC_MODE_8;
@@ -1234,7 +1237,7 @@ static const struct mxc_nand_devtype_data imx25_nand_devtype_data = {
        .eccsize = 0,
 };
 
-/* v3: i.MX51, i.MX53 */
+/* v3.2a: i.MX51 */
 static const struct mxc_nand_devtype_data imx51_nand_devtype_data = {
        .preset = preset_v3,
        .send_cmd = send_cmd_v3,
@@ -1258,6 +1261,34 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = {
        .spare_len = 64,
        .eccbytes = 0,
        .eccsize = 0,
+       .ppb_shift = 7,
+};
+
+/* v3.2b: i.MX53 */
+static const struct mxc_nand_devtype_data imx53_nand_devtype_data = {
+       .preset = preset_v3,
+       .send_cmd = send_cmd_v3,
+       .send_addr = send_addr_v3,
+       .send_page = send_page_v3,
+       .send_read_id = send_read_id_v3,
+       .get_dev_status = get_dev_status_v3,
+       .check_int = check_int_v3,
+       .irq_control = irq_control_v3,
+       .get_ecc_status = get_ecc_status_v3,
+       .ecclayout_512 = &nandv2_hw_eccoob_smallpage,
+       .ecclayout_2k = &nandv2_hw_eccoob_largepage,
+       .ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */
+       .select_chip = mxc_nand_select_chip_v1_v3,
+       .correct_data = mxc_nand_correct_data_v2_v3,
+       .irqpending_quirk = 0,
+       .needs_ip = 1,
+       .regs_offset = 0,
+       .spare0_offset = 0x1000,
+       .axi_offset = 0x1e00,
+       .spare_len = 64,
+       .eccbytes = 0,
+       .eccsize = 0,
+       .ppb_shift = 8,
 };
 
 #ifdef CONFIG_OF_MTD
@@ -1274,6 +1305,9 @@ static const struct of_device_id mxcnd_dt_ids[] = {
        }, {
                .compatible = "fsl,imx51-nand",
                .data = &imx51_nand_devtype_data,
+       }, {
+               .compatible = "fsl,imx53-nand",
+               .data = &imx53_nand_devtype_data,
        },
        { /* sentinel */ }
 };
@@ -1327,8 +1361,10 @@ static int __init mxcnd_probe_pdata(struct mxc_nand_host *host)
                        host->devtype_data = &imx27_nand_devtype_data;
        } else if (nfc_is_v21()) {
                host->devtype_data = &imx25_nand_devtype_data;
-       } else if (nfc_is_v3_2()) {
+       } else if (nfc_is_v3_2a()) {
                host->devtype_data = &imx51_nand_devtype_data;
+       } else if (nfc_is_v3_2b()) {
+               host->devtype_data = &imx53_nand_devtype_data;
        } else
                BUG();