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-rw-r--r--meta/recipes-kernel/linux/linux-omap-2.6.29/evm-mcspi-ts.diff132
1 files changed, 132 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/evm-mcspi-ts.diff b/meta/recipes-kernel/linux/linux-omap-2.6.29/evm-mcspi-ts.diff
new file mode 100644
index 0000000000..64d797cf96
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/evm-mcspi-ts.diff
@@ -0,0 +1,132 @@
1From linux-omap-owner@vger.kernel.org Sun Nov 02 21:08:25 2008
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49From: Grazvydas Ignotas <notasas@gmail.com>
50To: linux-omap@vger.kernel.org
51Cc: Grazvydas Ignotas <notasas@gmail.com>
52Subject: Re: omap3evm LCD red-tint workaround
53Date: Sun, 2 Nov 2008 21:56:19 +0200
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67
68> PS: TS is still unusable with the 16x16 pixel resolution
69This is also the case for Pandora. The patch below fixes the problem,
70but as I have no other boards to test this on, I haven't sent it.
71See if it helps you.
72
73
74From 91f3af26bbf751b846e6265d86387e81be7c1364 Mon Sep 17 00:00:00 2001
75From: Grazvydas Ignotas <notasas@gmail.com>
76Date: Tue, 28 Oct 2008 22:01:42 +0200
77Subject: [PATCH] OMAP3: fix McSPI transfers
78
79Currently on OMAP3 if both write and read is set up for a transfer,
80the first byte returned on read is corrupted. Work around this by
81disabling channel between reads and writes, instead of transfers.
82---
83 drivers/spi/omap2_mcspi.c | 7 ++++---
84 1 files changed, 4 insertions(+), 3 deletions(-)
85
86diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
87index 454a271..4890b6c 100644
88--- a/drivers/spi/omap2_mcspi.c
89+++ b/drivers/spi/omap2_mcspi.c
90@@ -710,7 +710,6 @@ static void omap2_mcspi_work(struct work_struct *work)
91 spi = m->spi;
92 cs = spi->controller_state;
93
94- omap2_mcspi_set_enable(spi, 1);
95 list_for_each_entry(t, &m->transfers, transfer_list) {
96 if (t->tx_buf == NULL && t->rx_buf == NULL && t->len) {
97 status = -EINVAL;
98@@ -741,6 +740,8 @@ static void omap2_mcspi_work(struct work_struct *work)
99 if (t->len) {
100 unsigned count;
101
102+ omap2_mcspi_set_enable(spi, 1);
103+
104 /* RX_ONLY mode needs dummy data in TX reg */
105 if (t->tx_buf == NULL)
106 __raw_writel(0, cs->base
107@@ -752,6 +753,8 @@ static void omap2_mcspi_work(struct work_struct *work)
108 count = omap2_mcspi_txrx_pio(spi, t);
109 m->actual_length += count;
110
111+ omap2_mcspi_set_enable(spi, 0);
112+
113 if (count != t->len) {
114 status = -EIO;
115 break;
116@@ -777,8 +780,6 @@ static void omap2_mcspi_work(struct work_struct *work)
117 if (cs_active)
118 omap2_mcspi_force_cs(spi, 0);
119
120- omap2_mcspi_set_enable(spi, 0);
121-
122 m->status = status;
123 m->complete(m->context);
124
125--
1261.5.4.3
127
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132
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