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beagleboard: added 2.6.29 kernel from OE
tested on B7 Signed-off-by: Marcin Juszkiewicz <marcin@buglabs.net>
This commit is contained in:
Marcin Juszkiewicz
132
meta/packages/linux/linux-omap-2.6.29/evm-mcspi-ts.diff
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132
meta/packages/linux/linux-omap-2.6.29/evm-mcspi-ts.diff
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From: Grazvydas Ignotas <notasas@gmail.com>
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To: linux-omap@vger.kernel.org
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Cc: Grazvydas Ignotas <notasas@gmail.com>
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Subject: Re: omap3evm LCD red-tint workaround
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> PS: TS is still unusable with the 16x16 pixel resolution
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This is also the case for Pandora. The patch below fixes the problem,
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but as I have no other boards to test this on, I haven't sent it.
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See if it helps you.
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From 91f3af26bbf751b846e6265d86387e81be7c1364 Mon Sep 17 00:00:00 2001
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From: Grazvydas Ignotas <notasas@gmail.com>
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Date: Tue, 28 Oct 2008 22:01:42 +0200
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Subject: [PATCH] OMAP3: fix McSPI transfers
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Currently on OMAP3 if both write and read is set up for a transfer,
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the first byte returned on read is corrupted. Work around this by
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disabling channel between reads and writes, instead of transfers.
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---
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drivers/spi/omap2_mcspi.c | 7 ++++---
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1 files changed, 4 insertions(+), 3 deletions(-)
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diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
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index 454a271..4890b6c 100644
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--- a/drivers/spi/omap2_mcspi.c
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+++ b/drivers/spi/omap2_mcspi.c
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@@ -710,7 +710,6 @@ static void omap2_mcspi_work(struct work_struct *work)
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spi = m->spi;
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cs = spi->controller_state;
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- omap2_mcspi_set_enable(spi, 1);
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list_for_each_entry(t, &m->transfers, transfer_list) {
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if (t->tx_buf == NULL && t->rx_buf == NULL && t->len) {
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status = -EINVAL;
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@@ -741,6 +740,8 @@ static void omap2_mcspi_work(struct work_struct *work)
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if (t->len) {
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unsigned count;
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+ omap2_mcspi_set_enable(spi, 1);
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+
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/* RX_ONLY mode needs dummy data in TX reg */
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if (t->tx_buf == NULL)
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__raw_writel(0, cs->base
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@@ -752,6 +753,8 @@ static void omap2_mcspi_work(struct work_struct *work)
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count = omap2_mcspi_txrx_pio(spi, t);
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m->actual_length += count;
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+ omap2_mcspi_set_enable(spi, 0);
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+
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if (count != t->len) {
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status = -EIO;
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break;
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@@ -777,8 +780,6 @@ static void omap2_mcspi_work(struct work_struct *work)
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if (cs_active)
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omap2_mcspi_force_cs(spi, 0);
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- omap2_mcspi_set_enable(spi, 0);
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-
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m->status = status;
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m->complete(m->context);
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--
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1.5.4.3
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--
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