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m25p80: Introduce COLLECTING_VAR_LEN_DATA state. 

Some flash allows to stop read at any time.
Allow framework to support this.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1466755631-25201-5-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Marcin Krzeminski 2016-06-27 15:37:33 +01:00 committed by Peter Maydell
parent e02b3bf263
commit 9964674e50
1 changed files with 5 additions and 0 deletions
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5
hw/block/m25p80.c
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@ -330,6 +330,7 @@ typedef enum {
STATE_PAGE_PROGRAM,
STATE_READ,
STATE_COLLECTING_DATA,
STATE_COLLECTING_VAR_LEN_DATA,
STATE_READING_DATA,
} CMDState;
@ -872,6 +873,9 @@ static int m25p80_cs(SSISlave *ss, bool select)
Flash *s = M25P80(ss);
if (select) {
if (s->state == STATE_COLLECTING_VAR_LEN_DATA) {
complete_collecting_data(s);
}
s->len = 0;
s->pos = 0;
s->state = STATE_IDLE;
@ -905,6 +909,7 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
break;
case STATE_COLLECTING_DATA:
case STATE_COLLECTING_VAR_LEN_DATA:
s->data[s->len] = (uint8_t)tx;
s->len++;