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From 78c8c8dc7e27c4502504cb4daa07bc9762f54de9 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Date: Thu, 14 Nov 2013 18:25:33 -0300
Subject: [PATCH 147/203] mtd: nand: pxa3xx: Split prepare_command_pool() in
two stages
This commit splits the prepare_command_pool() function into two
stages: prepare_start_command() / prepare_set_command().
This is a preparation patch without any functionality changes,
and is meant to allow support for multiple page reading/writing
operations.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
drivers/mtd/nand/pxa3xx_nand.c | 44 ++++++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 19 deletions(-)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -607,18 +607,8 @@ static void set_command_address(struct p
}
}
-static int prepare_command_pool(struct pxa3xx_nand_info *info, int command,
- uint16_t column, int page_addr)
+static void prepare_start_command(struct pxa3xx_nand_info *info, int command)
{
- int addr_cycle, exec_cmd;
- struct pxa3xx_nand_host *host;
- struct mtd_info *mtd;
-
- host = info->host[info->cs];
- mtd = host->mtd;
- addr_cycle = 0;
- exec_cmd = 1;
-
/* reset data and oob column point to handle data */
info->buf_start = 0;
info->buf_count = 0;
@@ -627,10 +617,6 @@ static int prepare_command_pool(struct p
info->use_spare = 1;
info->retcode = ERR_NONE;
info->ndcb3 = 0;
- if (info->cs != 0)
- info->ndcb0 = NDCB0_CSEL;
- else
- info->ndcb0 = 0;
switch (command) {
case NAND_CMD_READ0:
@@ -642,14 +628,32 @@ static int prepare_command_pool(struct p
case NAND_CMD_PARAM:
info->use_spare = 0;
break;
- case NAND_CMD_SEQIN:
- exec_cmd = 0;
- break;
default:
info->ndcb1 = 0;
info->ndcb2 = 0;
break;
}
+}
+
+static int prepare_set_command(struct pxa3xx_nand_info *info, int command,
+ uint16_t column, int page_addr)
+{
+ int addr_cycle, exec_cmd;
+ struct pxa3xx_nand_host *host;
+ struct mtd_info *mtd;
+
+ host = info->host[info->cs];
+ mtd = host->mtd;
+ addr_cycle = 0;
+ exec_cmd = 1;
+
+ if (info->cs != 0)
+ info->ndcb0 = NDCB0_CSEL;
+ else
+ info->ndcb0 = 0;
+
+ if (command == NAND_CMD_SEQIN)
+ exec_cmd = 0;
addr_cycle = NDCB0_ADDR_CYC(host->row_addr_cycles
+ host->col_addr_cycles);
@@ -784,8 +788,10 @@ static void pxa3xx_nand_cmdfunc(struct m
nand_writel(info, NDTR1CS0, info->ndtr1cs0);
}
+ prepare_start_command(info, command);
+
info->state = STATE_PREPARED;
- exec_cmd = prepare_command_pool(info, command, column, page_addr);
+ exec_cmd = prepare_set_command(info, command, column, page_addr);
if (exec_cmd) {
init_completion(&info->cmd_complete);
init_completion(&info->dev_ready);
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